Tandberg 9100X reel-to-reel

 Tandberg 9100X Stereo

Features:

3 motors

Electronic controls with 14 integrated circuits (Ics)

Mixing in stereo

Balanced microphone inputs

3 speeds, 4 heads

Tandberg Crossfield recording technique

Facilities for echo, sound-on-sound, editing and A – and B-test of recording

Professional mechanics

Remote control facility

Front outlet for stereo headphones

Can be used with separate hi-fi stereo amplifier

Electronics

The control system in the 9100X is an electronic brain with 14 high level logic, integrated circuits (IC’s). electronics has replaced mechanics, and each control is carried out firmly and precisely by a light touch on the keyboard 9100X “thinks for itself”. The electronics and the tape-tensioning mechanism always ensure that the tape is transported correctly. Connected to a remote control system (an accessory) all logic functions can be controlled from a distance of 5 meters. 9100X has all the qualities that Tandberg tape recorder are renowned for; echo, recording with sound-on-sound, A- and B-test of programmes. The B-test is a particularly important feature because it facilities close control of recording quality. There are 4 input controls, 2 for microphone inputs and 2 for line input (radio with record player or another tape recorder), and sound sources in stereo or mono. The microphone inputs in 9100X are balanced. This means that unwanted electrical noise from e. g. vacuum cleaners or foodmixers does not affect the recording.

Tandberg Crossfield Recording Technique

This is a special recording technique found only in Tandberg tape recorders. With this technique the tape is magnetized right through and is therefore capable of receiving very strong signals and reproducing them as crystal clear sound without distortion. The Tandberg Crossfield recording technique provides a safety margin against overload, particularly in the highest tone register which is the most critical region when recording.

Peak Level  Meters

The level meters are in the professional class. They always shows the strongest part of the sound – exactly that part which becomes distorted if the magnetic tape is overloaded. With the Tandberg Crossfield recording technique and the peak level meters you can fully exploit a tape’s qualities.

Photo-electric Stop

The forward drive stops automatically at the end of the tape or if the tape is transparent

Monitoring During Fast Winding/Editing

This functions (Edit/Cue) facilities listening to the tape during fast winding or rewinding. Consequently it is easy to find your way on the tape and to edit the recordings

Professional Mechanics

Correct reproduction demands high accuracy in the design and construction of the tape path. Therefore the complete tape guidance system in the 9100X is mounted on a stable base plate which ensures that the tape is correctly guided passed the magnetic heads. There are 3 motors – 2 for winding in either direction and one for forward drive. The winding motors work also as mechanical breakes. Together with the closed loop and the magnetic controlled friction breakes they ensure gentle treatment of the tape.

Specification

9100X is adjusted for Tandberg Tape or equivalent tape of the LH-type.

The largest reel diameter is 7” (18 cm).

Tape Speed:  7-1/2; 3-3/4; 1-7/8 ips

Speed Tolerance:  0,7%

Speed Variation

7-1/2 ips : 0,06% (WRMS) 0,09% (Peak value DIN 45511)

3-3/4 ips : 0,11% (WRMS) 0,15% (Peak value DIN 45511)

1-7/8 ips : 0,21% (WRMS) 0,3% (Peak value DIN 45511)

Frequency Range (DIN 45511)

7-1/2 ips : 30 to 26,000 Hz

3-3/4 ips : 30 to 20,000 Hz

1-7/8 ips :  30 to 11,000 Hz

Amplifier Mode :  30 to 22,000 Hz ±2 dB

Signal-to-Noise-Ratio:  at ( at highest speed, measured with Tandberg Tape or equivalent LH-tape)

IEC A-curve, 3% Distortion:  65 dB (4-track); 67 dB (2-track)

IEC Linear RMS , 3% Distortion :  58 dB (4-track); 58 dB (2-track)

DIN 45511(Weighted):  60 dB (4-track); 62 dB (2-track)

DIN 45511 (Unweighted) :  56 dB (4-track); 56 dB (2-track)

Crosstalk Attenuation (at 1000 Hz):  Better than 60 dB (MONO); Better than 50 dB (STEREO)

Distortion maximum

From Recording Amplifier at 0 dB :  0,2 %

From Replay Amplifier :  0,2% at 1,5 V

From Tape at 0 dB Recording Level :  3% max.

Inputs (Each channel has the following inputs)

Radio Input :  Impedance 50 k Ω  / Sensitivity 8 mV to 1,2 V

Line Input :  Impedance 200 Ω  / Sensitivity 30 mV to 5 V

MIC :  Balanced inputs for dynamic microphone with impedance of 200 to 700 Ω  / Sensitivity 230 UV to 35 UV at 400 Hz and 200 ohm microphone impedance

Outputs (Each channel has the following outputs)

Radio Output :  Impedance 5 k Ω  / Voltage 0,75 V unloaded

Line Output :  Minimum Load Impedance 150 Ω  / Voltage 1,5 V unloaded

Headphones Output :  Minimum Load Impedance 8 Ω  / Power 5 mW

Equipped  with reel locks (for use in vertical position)

Delivered as 2-track or 4-track version

Wood – Teak or palisander (Oak or request)

Main Voltage:  240/230/115 V 50 Hz  (60 Hz on request)

Power Consumption:  96 watts

Dimensions (W x H x D):  400 x 180 x 410 mm (15-3/4” x 7-1/4” x 16-1/8”)

Weight:  15,5 kg (34,5 lbs)

Tandberg Series 6000X reel-to-reel

The new tape recorder Series 6000X is designed for the world's most discriminating markets, and is in a class by itself when it comes to quality, precision and sound reproduction. Tandberg Series 6000X Stereo has a modern design. The operational devices are clearly arranged and in spite of its numerous technicalities the tape recorder is simple and easy to operate.

Series 6000X Stereo is a fully transistorized stereo recorder with 3 speeds: 7-1/2, 3-3/4 and 1-7/8 ips. It is intended for use together with separate hi-fi amplifiers and has therefore no built-in power amplifiers. There are separate heads for recording, playback and erase, plus a bias head. Two moving coil meters indicate recording levels. These instruments also indicate the output level at playback.

The recording is based upon the Tandberg Cross-Field technique, giving sensationally good specifications for frequency range and Signal-to-Noise Ratio. Inputs for dynamic microphone, line, radio, magnetic and ceramic pick-up. Limiter prevents excessive input signal levels during recording. Listening during fast wind and rewind if desired, makes it easy to locate a programme on the tape.

Professional tape recorder users will appraise the merits of Series 6000X Stereo. Mixing possibilities in stereo with separate input controls (2 for each channel), microphone with pick-up, line or radio. 4 input controls for mixing in mono. AB-test,  - that is you can listen to a programme during recording (monitoring). And you can also listen to the playback during recording. Possibilities for "Sound-on-Sound" copying of a programme from one track to the other, and mixing in a new programme synchronously with the first one. Possibilities for echo and other trick recordings.

Tandberg 6000X Stereo has one-lever control of tape drive, push-buttons for electrical functions and track selection, illuminated 4-digit revolution counter, automatic end-stop, pause=button and possibilities for remote control of start and stop.

Tandberg Series 6000X Stereo is available in 2- or4-track versions, in teak or rosewood cabinets.

 

Crossfield Technique

The technique employed by Tandberg introduces a separate bias head which thoroughly magnetizes and reduces the recording zone on the tape as well as wavelength dependability losses in the record function. In turn, the need for equalization in the record amplifier as well as distortion in the ultimate recording is reduced. Consequently, Signal-to-Noise Ratio, Dynamic Range and Record Frequency Response are all vastly improved. The fact that Tandberg designs and manufactures its own heads further crystallizes the ultimate potential of each Tandberg recorder into an optimum range. Therefore, it becomes evident why Tandberg's position as the world 's leading producer of tape recorders remains unmatched in the world today.

 

Specifications:

Tape:  7" max reel size. Low Noise tape should be used for recording

Tape Speeds:  7-1/2, 3-3/4 and 1-7/8 ips

Speed Tolerance:  ±1%

Playing Time (1,200 ft tape)

7-1/2 ips : 2 x 32 min. [stereo]; 4 x 32 min. [mono]

3-3/4 ips : 2 x 64 min. [stereo]; 4 x 64 min. [mono]

1-7/8 ips : 2 x 128 min. [stereo]; 4 x 128 min. [mono]

Playing Time (1,800 ft tape)

7-1/2 ips : 2 x 48 min. [stereo]; 4 x 48 min. [mono]

3-3/4 ips : 2 x 96 min. [stereo]; 4 x 96 min. [mono]

1-7/8 ips : 2 x 192 min. [stereo]; 4 x 192 min. [mono]

Fast Wind and Rewind

1,200 ft Tape :  approx. 1-3/4 min.

1,800 ft Tape :  approx. 2-1/2 min.

Heads:  1 x Erase; 1 x Record; 1 x Playback; 1 x separate Cross-Field bias Head

Erase and Bias:  85,5 kHz, distortion less than 0,5%

Inputs Sensitivity/Impedance

MIC :  70 µV/ 200 - 700 Ω (Max. Input Level 70 mV)

Radio :  5 mV/100 k Ω (Max. Input Level 15 V)

Line :  5 mV/100 K Ω (Max. Input Level 15 V)

Pickup :  1 mV/33 K Ω  (Max. Input Level 3V. With pick-up selector in position C; Impedance adapted for ceramic pick-up. Sensitivity 10 mV. Max. Input Level 30 V)

Limiter: Attack time below 5 ms. Release time approx. 1 s

Outputs Load/Impedance

Radio :  0,75 V/ 11 K Ω 

Line :  160 mV/10 K Ω

Outputs : 1,5 V/200 Ω 

Headphones :  1,5 V/ 200 Ω

Distortion: 

0,5% (From record amplifier at 0 dB recording level)

0,3% (From playback amplifier at 1,5 V output voltage)

3% :  (From tape at 0 dB recording level)

Frequency Response

7-1/2 ips : 40 - 20,000 Hz ±2 dB

3-3/4 ips : 50 - 16,000 Hz ±2 dB

1-7/8 ips :  50 - 9,000 Hz ±2 dB

Measured according to DIN 45511

7-1/2 ips : 40 - 22,000 Hz

3-3/4 ips : 40 - 18,000 Hz

1-7/8 ips :  40 - 10,000 Hz

Wow:  Measured in % according to DIN 45511

7-1/2 ips : better than 0,1%

3-3/4 ips : better than 0,2%

1-7/8 ips :  better than 0,4%

Signal/Hum :  ( Unweighted) peak value measured in % according to DIN 45511 at tape speed 7-1/2 ips and 5% tape distortion

54 dB (4-track)

54 dB (2-track)

Signal-to-Noise Ratio (peak value according to DIN 45511 at tape speed 7-1/2 ips and 5% tape distortion)

56 dB (4-track)

58 dB (2-track)

Signal/Tape Noise: (measured unweighted RMS)

58 dB (4-track)

58 dB (2-track)

Signal/Tape Noise: (measured according to A-curve RMS)

64 dB (4-track)

66 dB (2-track)

Crosstalk: (at 1,000 Hz according to DIN 45511)

Mono:  better than 60 dB

Stereo:  better than 50 dB

Power Requirements:  115/230/240 V, 50/60 Hz

Power Consumption:  45 W

Dimensions (W x H x D):  15-1/2" x 6-1/2" x 12-3/8"

Weight:  21 lbs

 

Tandberg TCD3014 cassette deck

To create a cassette deck that makes today's source material technology available to the most demanding music lover in an easy to operate, yet sophisticated format. Today's source materials, including digital, represent significant advantages in sound reproduction. Frequency response, dynamic range, Signal-to-Noise Ratio have all been improved to such a degree that yesterday's acceptable cassette deck is at best mediocre today.

The TCD3014, an entirely new generation of cassette deck.

In designing and manufacturing the TCD 3014, Tandberg's engineers combined significant advantages in performance with computer technology in an easy to use system.

The result is a deck with the most sophisticated micro-processor control system available today for true simplicity of operation.

Consider now the individual, but in less overwhelming component challenges that faced our engineers and how the extraordinary solution they devices are combined to create the outstanding TCD3014.

Features:

The TCD3014 uses no integrated circuits in the signal path except new, re-designed Dolby B and C processors. Instead, individual components are selected for ultimate parameters of noise, sound quality, low distortion, gain and stability.

Polystyrene or polypropylene capacitors rather than electrolytic or ceramic types are used in all critical circuits that carry musical information to insure optimum sound quality.

The TCD3014 refuses to compromise musical accuracy and uses phase compensating circuitry and ultra-wideband design to pass a signal with no audible degradation in sound or imaging.

Dyneq, Tandberg's patented headroom extends system for tape recording, helps overcome the severe high frequency limitations inherent in the cassette recording process. This is accomplished by a Dynamic record equalizer which controls high frequency boost during record to enable more signal on the tape without loss of highs.

Actilinear II is as great a breakthrough in eliminating "the cassette sound" as was Tandberg's proprietary Actilinear. Actilinear II offers a totally re-designed transconductance amplifier which takes the music and bias signals as pure voltage and converts them to a pure current. Actilinear II is a research-grade amplifier with a bandwidth so wide that it can actually pass square wave bias frequencies.

It is totally symmetrical in operation. Its [practical benefits include in excess of 20 dB audio headroom increase in the record amplification stages. It also eliminates interaction between record head impedance and the musical signal passing through it.

 

The 3014 features both Dolby B and C  for excellence in noise reduction

Dolby B insures compatibility with previously recorded tapes

Dolby C includes improved circuitry which offers substantial improvement in signal-to-noise plus better high frequency overload capabilities. Dolby C in conjunction with Actilinear II and Dyneq achieves an outstanding musical signal free of annoying background hiss.

A wireless infrared remote control allowing most functions (including flying start/record) with the built-in receiver section (optional)

Optional side panels in rosewood to unify the TCD3014 with the rest of the Series 3000A line

Machined extruded aluminum professional rack mounts are also available

 

The TCD3014 utilizes peak-reading meters which show high velocity peaks in all their subttlety (unlike bar graphs which generally leave large gaps between segments). Yet these meters have slow decay to give good averagning results as well as easy visibility. These meters will respond to a 2 milli-second peak within 1 dB and are full wave peak detectors regardless of phase

Since all tapes are less sensitive to high frequencies than to bass and mid frequencies, tape decks use a high-frequency boost known as record equalization to achieve flat frequency response.

Meters on the Tandberg TCD3014 indicate the signal after this record equalization has been applied. Therefore, they monitor the signal being recorded on the tape, not the signal coming into the record amplifier as most other recorders do. As all Tandberg cassette meters in the part, these are set to the now industry standard of 0 dB = 250 nWb/meter.

While the TCD3014 is recording, the source/tape switch controls only the output of the deck; the meters show input levels to the tape at all times. This feature makes possible audible tape monitoring of input levels to the tape.

Tandberg meters utilize one scale for Types I and II tapes and a second scale for Type IV tapes. The second scale allows recording of the higher signal levels permitted by the metal Type IV tapes.

 

Control Flexibility

To create a recorder that is simple to use but sophisticated enough to satisfy the most advanced audiophile.

The TCD3014 offers the ideal balance of simplicity and sophistication

All microprocessor functions are controlled by the same touch sensors that govern normal tape functions

Auxiliary functions include cue and review at one third speed, individual program search in either search-to-stop or search-to-play modes, automatic rewind and replay from memory, and the choice of a real-time counter calibrated to each tape for accuracy in wind as well as play mode.

The electronic counter can be used to measure either revolutions of the tape or elapsed time in both wind modes and play/record. Instant switching with memory between revolution and real-time counting is possible.

Timer play/timer record is available with an external clock. A built-in 6-second turn-on delay is programmed for all electronic circuits to stabilize before the transport can be engaged.

Both fixed and variable outputs are included on the back panel. Input sensitivity controls and a switchable multiplex filter are included. A back panel switch permits the use of non-standardized, older, chromium dioxide cassette with auto-selection of all other tapes.

 

The Transport

To design a tape drive system that offers stable, consistent, gentle tape handling and a high-speed, responsive, easy to operate control mechanism.

The TCD3014 features four servo-controlled motors in the tape transport system linked to sensors which monitor the speed and direction of the tape. The sensors then apply the proper voltage to insure accurate handling.

In fast-forward or rewind, the supply-side motor "tells" the take-up motor the speed at which it is turning. This means that a constant speed is maintained at all times in both wind and rewind functions.

In wind or rewind, one second equals one minute of play or record time. The TCD3014 also has one-third speed for cue, review, or search.

The transport mechanism offers superb construction. It is built on a 5 mm thick aluminum baseplate rolled under 40 tons of pressure to eliminate stress and greatly increase strength. It also features an 8,2 and an 8,4 cm diameter flywheel, a dual-capstan, closed-loop drive system, and a cassette locking mechanism that guarantees accurate positioning of the tape every time.

The TCD3014 transport also features:

Tandberg built, discrete three-head system

Azimuth alignment for all tapes utilizing a built-in test system.

Linear motor drive to position the head bridge and pinch rollers to tape accurately.

Resonances are eliminated by the use of predominantly aluminum casting and the use of mass differentiated dynamically balanced flywheels, pinch rollers, and a closed-loop capstan drive.

 

Specifications

Tape Speed:  1-7/8 ips

Speed Tolerance:  ±0,5%

Wow and Flutter

WRMS Play :  0,06%

WRMS Rec - Play:  0,09%

DIN - IEC :  0,12%

Frequency Range:

Tape I (-30 dB) :  18 Hz - 20 kHz ±1,5 dB

Tape II (-20 dB) :  18 Hz - 20 kHz ±1,5 dB

Metal Tape IV (-20 dB) :  18 Hz - 23 kHz ±1,5% (with Dolby C ±3,0 dB)

Total Harmonic Distortion (-250 nW/m, Dolby B

Tape I :  less than 1,5%

Tape II :  less than 2%

Metal Tape IV :  less than 1%

Signal-to-Noise Ratio (A-curve weighted, Dolby-C)

Metal Tape IV :  better than 74 dB

Erasure (i kHz)

Metal Tape IV :  better than80 dB

Crosstalk

Side A - B (1 kHz) :  less than 60 dB

Track 1 - 2 (1 kHz) :  less than 40 dB

Inputs Sensitivity/Impedance

Low :  100 mV/150 K Ω

High :  10 mV/150  k Ω

Outputs

Minimum load Impedance/ max. Voltage at unloaded output

Play 700 mV (Fixed line output) :  100 Ω / 700 mV

Play Variable (Variable line output) :  100 Ω /0-4 V

Headphones :  8 Ω /3,5 V

Power Requirements:  115 V ±10%, 60 Hz; 230 V ±10%, 50 Hz

Power Consumption:  50 watts

Dimensions (W x H x D):  435 x 166 x 350 mm (17-1/8" x 6-9/16" x 13-3/4")

Weight:  9,8 kg (21,6 lbs)

 

Tandberg TR-1040 receiver

The FM Receiver

The FM receiver has MOSFET transistors giving good reception for weak and strong stations. Extra linear phase response and high selectivity with 4-pole ceramic filters. A good performance is obtained from the integrated IF amplifier and detector. The FM stereo decoder has integrated circuits that include a phase-locked-loop oscillator giving good channel separation over the complete frequency range. The stereo decoder has automatic or manual change-over between mono and stereo. Active filters remove the stereo systems pilot tone and auxiliary carrier wave. Precise tuning is easy with the two large tuning meters, a big advantage, especially with stereo transmissions. The FM receiver is equipped with a muting circuit that removes inter-station noise.

 

Power amplifier

The amplifier has been designed to handle extremely heavy loads. Automatic protection circuits keep watch over it constantly. tR-1040 has a direct coupled, short-circuit proof output stage. Complementary output transistors give very low distortion. An electronic controlled relay protects the loudspeakers from accidental d.c. damage. Automatic thermal protection disconnects the amplifiers if they are overheated (from bad ventilation) and connects them again immediately the temperature has fallen.

 

Pre-amplifier

The pre-amplifier is designed for a transcription unit or record player with a magnetic pick-up. All the inputs are adjustable. Three effective filters (1 Low and 2 High) attenuate disturbing noise from program sources. An extra refinement is the separate bass and treble controls for each channel which permits equalization for bass and treble differences resulting from asymmetrical positioning of loudspeakers.

 

Specifications

Audio Section

Power Output:  average continuous sinewave power is 40 watts minimum rms per channel, both channels driver into 8 ohms load, from 20 to 20,000 Hz with no more than 0,2% t.h.d from 1/4 watt to 40 watts as specified herein.

Total Harmonic Distortion :maximum 0,2% at any power from 1/4 watt up to rated power.

Intermodulation Distortion:  0,2%

Damping Factor:  50 at 8 Ω , 20 - 20,000 Hz

Frequency Range:  Linear inputs from 7 to 70,000 Hz (-1,5 dB)

Controls

Treble :  ±15 dB at 10,000 Hz

Loudness Comp. : +7 dB at 10,000 Hz

Bass :  ±16 dB at 50 Hz

Loudness Comp. : +12 dB at 50 Hz

Low Filter:  -3 dB at 70 Hz (-12 dB /oct.)

High Filer 1 :  -3 dB at 8000 Hz (-12 dB/octave)

High Filter 2 :  -3 dB at 8000 Hz (-6 dB /octave)

Channel Separation: 

Phono :  52 dB (at 1 kHz)

Tape :  56 dB (at 1 kHz)

Signal-to-Noise Ratio (IHF)

Phono :  68 dB

Tape 1, 2 :  82 dB

Sensitivity:

Phono :  1,8 to 6,0 mV

Tape 1, 2 :  130 to 500 mV

Main Amplifier Sensitivity:  200 mV

Input Impedance :  10 k Ω

Outputs

Tape 1 and Tape 2 Outputs (Unloaded)

DIN Socket :  200 mV

Phono Socked :  1 V

Pre-Amplifier Output:  1 V / 1 k Ω 

FM Section

Tuning Range:  87,5 to 108 MHz

Sensitivity IHF:  2,0 µV at 300 Ω

50 dB Quieting:  3,5 µV at 300 Ω

Selectivity:

Carrier down (alternate channel) 100 dB at ±400 kHz

IHF Dynamic (alternate channel) 80 dB at ±400 kHz

Carrier Down  (adjacent channel) 40 dB at ±200 kHz

IHF Dynamic  (adjacent channel) 10 dB at ±200 kHz

Spurious Response:  better than 95 dB

Capture Ratio (at 1 mV ant. volt, selectively measured):  0,9 dB

Total Harmonic Distortion (at 100% modulation)

Mono :  0,2%

Stereo :  0,3%

Channel Separation (at 100 Hz to 10,000 Hz, selectively measured):  better than 40 dB

Pilot Tone Suppression: better than 68 dB

38 kHz Suppression:  better than 60 dB

SCA Suppression: better than 70 dB

General:

Main Voltage:  120 V (Internal Connections for 120/220/240 V ) 50/60 Hz

Dimensions (W x H x D):  440 x 132 x 310 mm (17-1/2" x 5-3/16" x 12-1/4") + knobs 20 mm (3/4")

Weight:  9 kg (20 lbs)

 

Tandberg Fasett loudspeakers

Living Sound Fasett - new concept in loudspeakers

With the Tandberg Fasett all the advantages of direct and indirect sound distribution can be exploited. In the concert hall the sound flows out from the instruments in all directions. It spreads out in the room, partly beamed directly at the listeners and partly reflected as indirect sound from the walls, ceiling and floor. the total sound in a concert hall is therefore a combination of direct and indirect  sound. the strength of the indirect sound in comparison with the direct sound depends upon the hardness of the reflecting surfaces - the walls, ceiling and floor. The sound reflected from a hard surface (glass, concrete) is stronger than the sound reflected from a soft surface (curtains, perforated tiles). With the Fasett this living "sound picture" can be re-created in the home.

 

Play with sound

Tandberg stereo-amplifiers have outputs for 4 loudspeakers (two for each channel in the stereo installation). When these 4 outputs are exploited with 4 loudspeakers, the "sound picture" can undergo a distinct improvement both in mono and stereo. With 4 loudspeakers it is possible to experiment with a combination of direct and indirect sound. The Fasett is shaped so that it can be tilted and turned to many positions. If two loudspeakers  are beamed directly towards the listeners, the other two can be directed to the side;  the back or upwards against, for example, a hard wall or a ceiling. These two loudspeakers will provide the indirect sound.

 

Technical Terms Bass Reflex

The Fasett employs a principle known as bas reflex. Simply explained it means that the sound radiating from the back of the loudspeaker cone is directed through a tuned duct so that it radiates from the front. It thereby boosts the ordinary radiations from the front of the cone. In this way the bass response in a limited tone region is reinforced. A further advantage resulting from this principle is reduced distortion. Be aware that the siting of a loudspeakers in a room also affects the strength of the sound in the bass region.

Sensitivity

An expression for the electrical power (operating power) that must be applied to the loudspeakers to reach a sound level of 96 dB (loud orchestra level) at a distance of 1 metre.

Maximum continuous power

The power that can be continuously delivered to a loudspeaker system without causing damage as a result of a high temperature in the voice coil.

Music Power

The power that can be delivered to a loudspeaker (a loudspeaker system) for a very short time interval without unduly raising the temperature or the distortion.

 

Specifications

Frequency Range:  50 - 20,000 Hz (DIN 45 500)

Resonant Frequency:  85 Hz

Sensitivity:  6 watts (DIN 45500)

Max. Continuous Power:  25 watts (DIN 45500)

Music Power:  40 watts (DIN 45500)

Impedance:  8 - 4 Ω

Complement:

1 x 5" bass loudspeaker

1 x 2-1/4" treble loudspeaker

Enclosure Volume:  6,5 liters

Dimensions (W x H x D):  280 x 242 x 220 mm (11" x 9-1/2" x 8-3/4")

Tandberg Huldra 10

 Huldra, a leading model with a name full of tradition in the Norwegian radio industry. This is the tenth model bearing this illustrious name: 6 wavebands; powerful stereo amplifier and many refinements making it a very advanced receiver. The  Huldra is a top quality product.

 Features:

FM, longwave, mediumwave, and 3 shortwave bands;

Large, open-scale;

FM stereo decoder;

Pre-tuning for 4 FM stations;

FM muting;

FM receiver with MOSFET transistors, 4-pole ceramic filters and integrated circuits;

AM receiver with MOSFET input stage;

Stereo power amplifier with 2 x 25 watts sine wave output power in 8 ohms;

Frequency/Loudness compesated volume control;

High and Low filters;

Connections for a record player (magnetic or ceramic pick-up) anda tape recorder. In addition connection for an extra programme source;

Front output for stereo headphones.

 The FM Receiver

The most important characteristic with a receiver is good sensitivity. The FM receiver in the Huldra is based on field-effect transistors (MOSFETs) and integrated circuits; these ensure very good sensitivity and at the same time provide good protection against strong, interfering, nearby stations. The receiver also includes new ceramic filters providing good selectivity and low distortion. The stereo decoder has integrated circuits with a phase-locked-loop oscilator which gives high channel separation and low distortion with reproduction of stereo transmissions. With the two tuning meters it is easy to tune in the stations precisely.

 The AM Receiver

The 3 shortwave bands cover the entire international shortwave spectrum. There is a built-in antenna for longwaves and mediumwaves. In addition the receiver has special features; six tuned circuits in the intermediate frequency amplifier provide good selectivity. Field-effect transistors also play their part in the AM receiver. The Huldra 10 has such good sensitivity that even very weak stations can be pulled in, but it also tolerates signal from strong stations. A special filter reduces disturbing whistles caused by adjacent stations.

 Power Amplifier Section

There are many advanced refinements that go towards making Huldra a special receiver. The power amplifier, for example, has a fully complementary output stage giving very low crossover distortion - clean sound. An "electronic protection circuit" prevents damage if the loudspeakers should be accidentally short-circuited. There is a balance control and common volume control for both channels. The loudness compensation on the volume control can be disconnected.

Huldra 10 has two very good filters (High and Low) that reduce noise from programme sources (hiss or rumble). The pre-amplifier is corrected for a magnetic pick-up, (RIAA) with a switch for adjustment for a ceramic pick-up.

Recommended loudspeakers for the Huldra

There are three Tandberg speakers particularly suitable for the high quality amplifier in the Huldra 10. first we recommend the TL-2520, a 3-way 25 litre hi-fi system giving excellent reproduction from 45 to 20,000 Hz. An alternative is a larger model, the TL-3520.

Specifications

Amplifier Section

Output Power

Per channel, sine wave, with 1 kHz in 8 Ω (4 Ω):  28 W (38 W) Both channels driven simultaneously DIN 45500

Per channel , sine wave, from 20 to 20,000 Hz in 8 Ω:  25 W   Both channels driven simultaneously. 0,3% Distortion

Distortion (with output power 1 dB below nominal and lower at 1 kHz in 8 Ω (4 Ω):  0,1% (0,15%)

Intermodulation (according to DIN 45 500):  0,6%

Damping Factor (nominal output power in 8 Ω (4 Ω):  60 (35) 20-20,000 Hz

Frequency Response (from linear inputs (-15 dB): 15 - 50,000 Hz

Channel Separation (at 1 kHz minimum):  60 dB

Tone Controls: 

Treble  Control at 10 kHz : ±15 dB

Frequenzy/Loudness at 10 kHz : +7 dB

Bass Control at 50 Hz : ±16 Hz

Frequency/Loudness at 50 Hz : +12 dB

Low Filter -12 dB/oct, -3 dB at 75 Hz

High Filter  -12 dB/octave, -3 dB at 7 000 Hz

Input Sensitivity (nominal  output power in 8 Ω):

Tape 1 : 280 mV

Tape 2 (Extra) : 280 mV

Phono 1  Magn. (cer) : 2,4 - (72 mV)

Signal-to-Noise Ratio (2x50W in 8 Ω according to DIN 45 500):

Tape 1 : 60 dB

Tape 2 (Extra) : 60 dB

Phono 1 : 60 dB

Tuner FM Section

Wave Band:  87,5 - 108 MHz

Frequency Response (-3dB):  20 - 15,000 Hz

Sensitivity in Mono (for 26 dB S/N according to DIN 45 500 with 75/300 Ω aerial impedance):  0,8 µV/1,6 µV

Sensitivity in Stereo (for 46 dB S/N according to DIN 45 500 with 75/300 Ω aerial impedance):  20 µV/40 µV

Signal-to-Noise Ratio (with 1 mV aerial voltage):

Unweighted (according to IHF),  Stereo/Mono : 66/68 dB

Weighted (according to DIN), Stereo/Mono : 54/58 dB

Unweighted (according to DIN) , Stereo/Mono : 61/63 dB

Distortion (according to DIN), Stereo/Mono :  0,4%/0,2%

Selectivity (according to IHF), ±400 Hz :  80 dB

Image Frequency Rejection Ratio:  70 dB

AM suppression:  50 dB

IF Rejection:  95 dB

Limiting (-3dB) with 75 Ω aerial impedance:  0,7 µV

Muting Thereshold with 75 Ω aerial impedance:  1,5 µV

Capture ratio:  1,5 dB

Channel Separation (accor. to DIN 45 500):  40 dB

Pilot Tone Suppression (accor. to DIN 45 500):  35 dB

38 kHz Suppression (accor. to DIN 45 500):  50 dB

AM Section

Wave Bands

Long wave :  150 - 268 kHz

Medium wave :  518 -1600 kHz

Short wave [ I / II / III]:  3,3 - 10 MHz / 10 - 20 MHz / 20 - 30 MHz

Selectivity at 1 MHz (±9 kHz):  43 dB

Distortion with 30% modulation:  1%

Sensitivity at 1 MHz (30% mod. and 20 dB S/N):  50 µV

General

Wood Finish Veneers:  Teak or Rosewood ( Oak, Walnut to order)

Main Voltage:  220/240 V (alt.115 -230 V) 50/60 Hz

Dimensions (W x H x D):  535 x 120 x 305 mm (21" x 4-3/4" x 12") without knobs

Weight:  8,2 kg (18 lbs)

Tandberg Sølvsuper 12 /12C

 Tandberg Sølvsuper - the best selling table receiver in Norway. You can now buy this famous model with a biult-in stereo cassette tape recorder as the Sølvsuper 12C. The cassette tape recorder has a microphone input, manual level controls for recording, and LED record level indicators. There are many reason why the Sølvsuper has become so popular. First of all its reliability. Then good design and a clean simple layout for the operating controls. Teh Sølvsuper 12 has the same quality features as its 11 predecessores. To obtain full enjoyment from it you ought to have loudspeakers that do it justice.

Features

FM stereo, long wave, medium wave, and short wave;

FM stereo tuner with built-in decoder, ceramic filters and integrated circuits;

Muting (no noise between atations) and AFC (automatic frequency control)

Powerful stereo amplifier. Sine wave output power 2 x 15 watts in 8 ohms, or 2 x 20 watts in 4 ohms

Frequency/Loudness compensated volume control;

Can be connected to a record player with ceramic or magnetic pick-up and a tape recorder;

Front jack for stereo headphones

 The Receiver

The stereo decoder in the FM tuner has integrated circuits and a light diode on scale automatically comes on when there is a stereo transmission. The FM tuner has ceramic filters that discriminate well between stations. This is a big advantage especially where two stations lie close together in the band. The muting circuit, which cuts out noise between FM stations, acn be connected and disconnected.

The High Quality Stereo Amplifier

The stereo amplifier has a great many valuable features. The volume control is common to both channels and  the balance between the channels can be changed by a balance control. There are very effective separate bass and treble controls. The volume control is frequency/loudness compensated. This means that it automatically corrects for the falling frequency response of the human ear at low volumes.

 Sølvsuper 12C - The Cassette Model

The Sølvsuper 12C has the same tuner and amplifier sections as the model 12. in addition it has a very good built-in cassette tape recorder for record and playback of programmes from radio, record player, microphone or another tape recorder. The traditional record level meters have been replaced with light emitting diodes for indicating the peak recording level. This is a very safe measurement technique. LED's have an almost unlimited life.

The Sølvsuper as the central unit in a Tandberg Music Centre.

Most people who own a Sølvsuper use it as the central unit in a music centre. This enables all the facilities of the stereo amplifier to be fully exploited. The Sølvsuper 12 can be connected to a tape recorder, a Tandberg 3500 Stereo for example, and a record player witha magnetic or ceramic pick-up. The Sølvsuper has 4 speaker outputs 92 for each channel)> this means that the music centre can consist of 2 or 4 Tandberg loudspeakers located together or in two separate groups.

Specifications

Amplifier Section

Output Power

Per channel, sine wave, with 1 kHz in 8 Ω (4 Ω):  17 W (22 W) Both channels driven simultaneously DIN 45500

Per channel , sine wave, from 20 to 20,000 Hz in 8 Ω:  12 W   Both channels driven simultaneously. 1% Distortion

Distortion (with output power 1 dB below nominal and lower at 1 kHz in 8 Ω (4 Ω):  0,2% (0,3%)

Intermodulation (according to DIN 45 500):  0,5%

Damping Factor (nominal output power in 8 Ω (4 Ω):  30 (15) 20-20,000 Hz

Frequency Response (from linear inputs (-15 dB): 30 - 25,000 Hz

Channel Separation (at 1 kHz minimum):  60 dB

Tone Controls: 

Treble  Control at 10 kHz : ±15 dB

Frequenzy/Loudness at 10 kHz : +4 dB

Bass Control at 50 Hz : ±16 Hz

Frequency/Loudness at 50 Hz : +5 dB

Input Sensitivity (nominal  output power in 8 Ω):

Tape  : 150 mV

Phono   Magn. (cer) : 2,5 - (75 mV)

Signal-to-Noise Ratio (2x50W in 8 Ω according to DIN 45 500):

Tape  : 55 dB

Phono  : 55 dB

Tuner FM Section

Wave Band:  87,5 - 108 MHz

Frequency Response (-3dB):  20 - 15,000 Hz

Sensitivity in Mono (for 26 dB S/N according to DIN 45 500 with 75/300 Ω aerial impedance):  1,0 µV/2,0µV

Sensitivity in Stereo (for 46 dB S/N according to DIN 45 500 with 75/300 Ω aerial impedance):  40 µV/80 µV

Signal-to-Noise Ratio (with 1 mV aerial voltage):

Unweighted (according to IHF),  Stereo/Mono : 66/68 dB

Weighted (according to DIN), Stereo/Mono : 54/58 dB

Unweighted (according to DIN) , Stereo/Mono : 61/63 dB

Distortion (according to DIN), Stereo/Mono :  0,5%/0,3%

Selectivity (according to IHF), ±400 Hz :  55 dB

Image Frequency Rejection Ratio:  46 dB

AM Suppression:  48 dB

IF Rejection:  90 dB

Limiting (-3dB) with 75 Ω aerial impedance:  0,7 µV

Muting Thereshold with 75 Ω aerial impedance:  2,0 µV

Capture ratio:  1,5 dB

Channel Separation (accor. to DIN 45 500):  40 dB

Pilot Tone Suppression (accor. to DIN 45 500):  50 dB

38 kHz Suppression (accor. to DIN 45 500):  50 dB

AM Section

Wave Bands

Long wave :  150 - 268 kHz

Medium wave :  518 -1600 kHz

Short wave :  5,8 - 18,5 MHz

Selectivity at 1 MHz (±9 kHz):  40 dB

Distortion with 30% modulation:  1%

Sensitivity at 1 MHz (30% mod. and 20 dB S/N):  50 µV

Cassette Tape Recorder

Speed Tolerance:  ±1% max. (DIN 45500)

Speed Variations:  0,25% max. (peak weighted)

Frequency Range:  45 to 13,000 Hz (DIN 45511)

Signal-to-Noise Ratio:  greater than 47 dB (DIN 45405)

General

Wood Finish Veneers:  Teak or Rosewood ( Oak, Walnut to order)

Main Voltage:  220/240 V (alt.115 -230 V) 50/60 Hz

Dimensions (W x H x D): 

Sølvsuper 12 :  495 x 117 x 240 mm (19-1/2" x 4-3/4" x 9-1/2") without knobs

Sølvsuper 12 C :  645 x 115 x 240 mm (25-1/2" x 4-5/8" x 9-1/2")

Weight: 

Sølvsuper 12 :  5,8 kg (12,5 lbs)

Sølvsuper 12 C :  8,2 kg (18 lbs)