Noresco System 85524

Our equipment speaks for itself

Noresco a Canadian Company founded nearly seven decades ago. Our business is to make quality quadraphonic and stereo components. And we think we make the best in the business. We say this because of the rigid quality control Noresco components have to pass to get our stamp of approval.

We built our own research and testing facilities in which a team of dedicated engineers create quality products for today's discriminating consumer. We determine beyond a doubt that Noresco equipment will reproduce the truest, richest sound possible. We do all this because when people say :Noresco" we want to hear them say the word "Quality" that's why you'll find our name in the finest stores and in the highest quality audio shops right across Canada.

Quadraphonic High Fidelity from Noresco

Previously, if you wanted to have the exotic feeling of being surrounded by music, a concert hall would be the place to go. Here the sounds come off the stage and reverberate off walls, ceiling and floor and by the time you hear the music it is all beautifully blended.

A good concert hall imparts fullness of tone. You will also have a feeling of intimacy with the orchestra. Reproducing this moving experience of a live performance is what 4-channel sound is all about. It's an even more spectacular improvement on stereo, than stereo was on mono.

As the term "4-channel" suggests, you use four speakers instead of two - two at the front and two at the back. Which adds front-to-back dimensions to the conventional side-to-side sound of stereo. But don't get the idea that you can get 4-channel sound by adding two speakers to an existing stereo setup. The only way to get true 4-channel sound is to buy yourself an amplifier with a built-in decoding system, which distributes the appropriate sound into four different speakers.

A good turntable is a must in a quadraphonic High Fidelity system

With Quadraphonic High Fidelity, precise tonearm tracking is as important as the orchestra being in perfect tune. This is where Noresco Quadraphonic system excel. Because they are built around the very finest turntable you can buy - Dual. But even Dual won't give you concert hall performance without precisely matched components. What we offer you is a perfect harmony. Dual automatic turntables. And the best Noresco tuners, receivers and speakers we have ever made. They.ve been designed and tested under the most modern scientific conditions.

 

This smart new system should win your heart and ears because of the outstanding features and the little price tag.

The 40 watt NRC3-855 Quadrasound receiver-turntable gives you an extremely fine sound of AM/FM programs or recordings. Then there's the remarkable Dual 1214 automatic turntable with dynamically balanced tonearm for precise tracking plus a Shure M75MD magnetic cartridge. The NEC-524 speakers are built with the same reproduction accuracy as Noresco's best Genuine Walnut finish.

 

Tascam 234 Syncaset cassette tape recorder

Syncaset - 4-Channel Multitrack Recorder

The Tascam 234 Syncaset 4-channel Multitrack Recorder is essentially a campact cassette version of 4-track oper-reel recorders/reproducers with a buit-in 4x2 mixer. And as such it offers some of the same features that put our open-reel machines at the top of their class. The 234 Syncaset even offers a few features its bigger brothers don''t have.

Simul-Sync Recording

The 234 Syncaset gives you Simul-Sync recording, for professional mutitrack recording capability. This unique Tascam functions lets you build up rich, complex recordings - you can add one or more tracks as a time, playing all the parts yourself, until you've created exactly the sound you want. Tracks can be "ping-ponged" back and forth, combining them to open up more tracks. In fact, you can record up to 10 separate tracks with each being transferred to a new track no more than once, so there is no degradation in the quality of the final recording.

 

Sophisticated Features

One extremely important features the 234 Syncaset has in common with Tascam open-reel multitrack machines is our unique Record Function and Output Select switching matrix. This time-saving system makes setting up record and sync channel assignments easier and faster than ever. The Record Function switches assign the channel sync or record modes, while the Output Select switches select monitoring of either the input source signals or playback from the sync/repro head. A meter switch selects monitoring of the four track on the four respective meters,, or switches meters 1 and 2 to display the levels on the 234's built-in cue mixer output busses. And a Cue selector selects mono or stereo mixer output modes.

The built-in mixer is something that is unique to the 234 Syncaset. In addition to providing a stereo or mono cue mix with full panning on each channel in the stereo mode, it can be used to actually mix down your multitrack tape to stereo format until you're ready to invest in a separate mixer.

There are even a number of locator functions including zero stop and zero play that can make finding the desired spot for recording, overdubbing or mixdown fast and easy - letting you concentrate on creating rather than button pushing.

 

 

If the 234 Syncaset is combined in the right way with the right peripheral equipment, it can provide extensive versatility and flexibility for creative multitrack recording. A 234 Syncaset and an M-2A 6-in /4-out mixer, for example, form a system that is capable of creating recordings that you would never have thought possible with "cassette Multitrack". And the 234 is ideal for audio-visual production as well as music recording.

In terms of sound quality the 234 Syncaset has been designed to deliver the best possible. It has a top-performance 2-motor transport that ensures superb tape travel stability and optimum tape-to-head contact. The tape passes the heads a 9,5 cm/s - twice the speed of conventional cassette - so you still get frequency response and Signal-to-Noise Ratio that's on a par with some of the finest stereo cassette decks. And, of course, logic control makes operation smooth, sure, silent and safe.

For even better Signal-to-Noise Ratio and exceptionally broad dynamic range reproduction capability the 234 Syncaset has a built-in, switchable dbx noise reduction system. And it has been designed exclusively to provide optimum performance with chrome tape formulations.

The 234 Syncaset will accept just about any source with no need for any other equipment.  Each channel has a line input as well as a phone-jack type microphone input. The microphone inputs have independent trim controls to perfectly match the sensitivity of the respective input for different mikes or even electric guitars and other electric instruments.

A Tascam 234 Syncaset can be used alone, or as the nucleus of a more sophisticated multitrack recording system that is capable of producing some very surprising results.

 

Specifications

Electrical Parts

Mixer Section

Mic/Inst Input (x 4)

Input Impedance:  100 k Ω , unbalanced

Nominal Input Level:  60 dBV (1 mV) to -10 dBV (0,3 V)

Min. Input Level:  -70 dBV (0,3 mV) at TRIM max.

Max. Input Level:  +15 dBV (5,6 V), at TRIM min.

Line IN (x 4)

Input Impedance:  22 k Ω , unbalanced

Nominal Input Level:  -10 dBV (0,3 mV)

Min. Input Level:  -20 dBV (0,1 mV) at Input max.

Max. Input Level:  +15 dBV (5,6 V)

Line Out (x 4)

Output Impedance:  100 Ω

Nominal Load Impedance:  10 k Ω 

Min. Load Impedance:  1,7 k Ω 

Nominal Output Level:  -10 dBV (0,3 V)

Max. Output Level:  +15 dBV (5,6 V)

Cue Out (L, R)

Output Impedance:  100 Ω

Nominal Load Impedance:  10 k Ω 

Min. Load Impedance:  1,7 k Ω 

Nominal Output Level:  -10 dBV (0,3 V) PAN fully L/R

Max. Output Level:  +15 dBV (5,6 V)

Phones Output (stereo)

Nominal Load Impedance:  3 Ω 

Min. Load Impedance:  4 Ω 

Max. Output Level: 100 mW (8 Ω )

Frequency Response:  20 Hz - 20 kHz -0/2 dB

Signal-to-Noise Ratio:

One Mic/Inst in to Line Out

88 dB (TRIM max.) / 82 dB (TRIM min.) IHF, A weighted

64 dB (TRIM max.) / 78 dn (TRIM min.), unweighted , 20 - 20,000 Hz

One Line in to Line Out

82 dB (IHF, A weighted)

78 dB (unweighted , 20 - 20,000 Hz)

Total Harmonic Distortion:  0,5% (1 kHz, 0 VU)

Crosstalk:  65 dB (1 kHz)

Peak Level Indicator:  Light up at 8 dB (above 0 VU)

Mechanical Parts

Tape:  Compact CassetTe, C-30 to C-90, Chrome,(cobalt) tape (70 µs EQ)

Track Format:  4-track, 4-channel one direction recording/playback

Heads:  4-channel record/playback (Permalloy head);4-channel erase (Ferritte head)

Motors:  1 FG servo-controlled DC capstan motor; 1 DC reel motor; 1 DC control motor

Tape Speed: 9,5 cm/s (3-3/4 ips) ±1%

Pitch Controls:  ±12% of normal tape speed

Wow and Flutter:  ±0,08% peak (DIN/IEC/ANSI weighted) 0,04% rms (JIS/NAB, weighted)

Fast Wind Time:  approx. 85 sec. For C-60 tape

Recording Time:  15 minutes for C-60 tape

Dimensions (W x H x D):  482 x 147 x 357 mm (19" x 5-13/16" x 14-1/16")

Weight:  9,8 kg net (21-5/8 lbs)

 

Noresco 5670 loudspeakes

Acoustic suspension speaker system

The Noresco Acoustic Suspension Loudspeaker System 5670 incorporates a 10" woofer with a very low free air resonant frequency and extremely soft suspension to reproduce the lowest bass frequencies with minimum distortion. To ensure the high fidelity reproduction of the upper mid-range and high frequencies, a 1" dome tweeter is utilized.

The effective range of the woofer extends beyond 3,500 Hz allowing the Loudness Contour crossover to have a crossover frequency of 2,500 Hz and prevent the tweeter from being overloaded at frequencies below 2,500 Hz. System resonance is at 55 Hz

The overall frequency response of the complete speaker system is 40 to 20,000 Hz ±5 dB measured in our anechoic chamber. The frequency response will of course be affected by the room in which the speakers are to be used, consequently their location in the room becomes important. There is no hard and fast rule governing the location of speakers in a room, so the ultimate can only be achieved by experiment. The maximum power handling capacity of the model 5670 is 50 watts

 

Specifications

Frequency Response:  40 - 20,000 Hz

Crossover Frequency:  2,500 Hz

Drivers

LF :  10" woofer

HF :  1" tweeter

Max. Power Handling:  50 watts

Impedance:  8 Ω

Controls:  treble switch -3,0 dB / 0 dB / +3 dB

 

Luxman PD-272 turntable

Direct-Drive Turntable

A new direct-drive turntable from Luxman at a modest price. A brushless and slotless DC servo motor and a straight, low-mass tonearm offer superb Wow and Flutter no more than 0,03% and excellent Signal-to-Noise Ratio at 60 dB

Brushless and Slotless DC Servo Motor

Excellent woa and flutter characteristic together with stable rotation are assured by adopting a Brushless and Slotless DC Servo Motor in which slots are completely removed to eliminate unevenness of rotation caused by electro-magnetics, and further a turntable platter of high inertia makes it possible to distribute the large mass of platter weight around the outer contour.

Straight0Type Tonearm

A straight type tonearm is adopted to eliminate resonance caused by lack of intensity which tends to be found on the tonearm exclusively designed for high compliance type cartridge, and at the same time the root of the tonearm is of double-pipe structure to strengthen anti-resonance affect.

Further, the cartridge shell is integrated to the tonearm, thus resonance is suppressed down to the minimum. Also such problem as poor contact of cartridge terminals is removed.

 

Acrylic Dust Cover

For the dust cover, an acrylic resin is adopted which provides a very smooth surface and excellent characteristic against acoustic, feedback. The entire cover is detachable with semi-free-stop hinges.

Ultra Thin Type OI Core Transformer

An ultra thin type OI core transformer of the least-leakage flux, it adopted which is smoothly housed in the smart chassis. This contributes to the realization of stable rotation and excellent signal-to-noise ratio.

Platter Mat

The platter mat is so designed as to realize firm retention of the disc. To minimize unnecessary space between disc and platter mat, the plane is procured between the two by making the contour of platter mat suitable to that of disc.

Of course the platter mat not only damps discs but the platter itself thanks to high density rubber material, and further it is exactly inlaid to the turntable platter. The surface with special treatment ensures superb contact to discs.

 

Functions

A unique switch controls both power turn-on and turn-off and speed selection through the use of a single switch. A stroboscope of mirror reflex type, oil damped cueing system, anti-skating device etc, are all ideally arranged based upon human engineering considerations.

 

Specifications

Phono Motor Section

Driving System:  Direct-drive system

Motor:  DC servo brushless and slotless motor

Turntable Platter:  300 mm aluminium die-cast

Platter Weight:  1,8 kg including mat

Rotation:  33-⅓ and 45 rpm

Adjustable Range of Rotation:  ±4%

Signal-to-Noise Ratio:  no less than 60 dB (IEC-B)

Wow and Flutter:  no better than 0,03% WRMS

Tonearm Section

Tonearm:  Straight arm of static balance type

Effective Length:  240 mm

Tracking Error:  +2° 13'; -1° 08'

Overhang:  15 mm

Cartridge Weight:  4 g - 11 g

Cartridge Height:  13,5 mm - 20,5 mm

Stylus Pressure:  0 - 3 g (direct reading)

Accessories:  Anti-skate Adjustment, Tonearm Elevation

Additional Features

Dust Cover:  Detachable with semi-freestop hinge

Insulator:  Height adjustable

Stroboscope:  Mirror-reflex type

General

Power Consumption:  5 W

Dimensions (W x H x D):  472 x 152 x 348 mm (18-37/64" x 6" x 13-45/64")

Weight:  10 kg (22 lbs) net

 

Kenwood KR-6340 receiver

Kenwood Two-Four Receiver

This receiver in the new Kenwood "Two-Four" line gives you: firstly, it functions as a high-grade stereo receiver with 80 watts of RMS power (152 watts total IHF music power); secondly, it decodes regular matrix (RM sources with accurate four-channel separation); thirdly, its SQ decoder circuit permits 4-channel play of SQ Matrix records; and , last but not least, it accepts a little plug-in CD-4 demodulator - our model KCD-2 - for playing discrete 4-channel CD-4 records. So, whatever the situation in regard to record availability in your area may be, whatever personal listening preferences you may have, whether you want to go 4-channel right now or wait a little longer, the KR-6340 is tailor-made to your needs.

Coming from Kenwood, the KR-6340 boasts the kind of careful, guaranteed engineering that's exemplified by DSD FM stereo decoding, unconditionally guaranteed output power at any frequency, and fully electronic protection against short-circuits and overload. All told, a two-channel/four-channel receiver that continues a great tradition of Kenwood high fidelity.

 

Four-channel capabilities

Built-in Separate SQ and RM Matrix Decoders

Prepared for FM Discrete 4-channel Broadcasts

Accepts Plug-in CD-4 Demodulator

Recording and playback 4-channel Tape and Aux Connectors, and 4-channel headphone jakcs

Drivers a Total of Eight Speakers

 

Amplifier section capabilities

BTL Amplifier Layout Gives 250% Power in 2-channel mode

Power Guaranteed Unconditionally at Any Frequency

Fully Electronic Protection Circuit

AM/FM Stereo Tuner Capabilities

FET and Ceramic Filters in FM Tuner

Exclusive Kenwood DSD System

Other Features
Program Indicator Lamps

Convenient 4-channel Balance Controls

 

Specifications

FM Tuner Section

Usable Sensitivity (IHF):  2,0 µV

Frequency Response:  20 Hz - 15,000 ±1,2 dB

Total Harmonic Distortion

Mono :  0,5% (at 400 Hz 100% modulation)

Stereo :  0,8% *at 400 Hz 100% modulation)

Signal-to-Noise Ratio:  63 dB at 1 mV input

Image Rejection:  60 dB

Selectivity (IHF ALT channel):  50 dB

IF Rejection:  90 dB

Spurious Signal Rejection:  90 dB

AM Suppression:  60 dB

Capture Ratio:  3,0 dB

Stereo Separation:  40 dB (at 1,000 Hz); 20 dB (at 10,000 Hz)

Subcarrier Suppression:  45 dB

Antenna Impedance:  300 Ω  (balanced); 75 Ω  (unbalanced)

AM Tuner Section

Usable Sensitivity (IHF):  25 µV

Signal-to-Noise Ratio:  45 dB at 1 mV input

Image Rejection:  45 dB

Selectivity (IHF):  30 dB

IF Rejection:  35 dB

Antenna:  Built-in ferrite bar antenna

Main Amplifier Section

RMS Power Output Full Channel Driven into:

8 Ω  at 20-20,000 Hz  :  2 x 40 watts (2-ch); 4 x 15 watts (4-ch)

8 Ω  at 1,000 Hz  :  2 x 50 watts (2-ch); 4 x 20 watts (4-ch)

4 Ω  at 10,000 Hz  :  2 x 45 watts (2-ch); 4 x 23 watts (4-ch)

Dynamic Power Output

Into 8 Ω  :  170 watts (2-ch); 120 watts (4-ch)

Into 4 Ω  :  152 watta (4-ch)

Total Harmonic Distortion

At Rated Power into 8 Ω  :  0,8%

At -3 dB Rated Power into 8 Ω  at 1,000 Hz :  0,3%

Intermodulation Distortion (60 Hz : 7 kHz = 4 : 1)

At Rated Power into 8 Ω  :  0,8%

At -3 dB Rated Power into 8 Ω :  0,3%

Power Bandwidth:  20 Hz - 40,000 Hz

Damping Factor:  20 at 8 Ω  (4-ch)

Speaker Impedance:  4ohm - 16 Ω

Pre-Amplifier Section

Input Sensitivity/Impedance

Phono :  1,5 mV/100 k Ω

AUX :  150 mV/50 k Ω

Tape Play :  150 mV/50 k Ω

Maximum Input Voltage (RMS)

Phono 1 :  100 mV (T.H.D. 0,8% at 1,000 Hz)

Signal-to-Noise Ratio

Phono :  60 dB

AUX :  75 dB

Tape Play :  75 dB

Output Voltage/Impedance

Tape Rec (PIN) :  150 mV/100 Ω

Tape (DIN) :  40 mV/50 Ω

Frequency Response

Phono 1, 2 :  RIAA Standard curve ±1 dB

Tuner, AUX, Tape Play :  20 - 20,000 Hz ±1 dB

Tone Controls

Bass :  ±10 dB at 100 Hz

Treble ±10 dB at 10,000 Hz

Loudness Control (-30 dB) :  +10 dB at 100 Hz ; +5 dB at 10,000 Hz

General

Switches

Speaker Selector :  A, B Push Switch

Input Selector :  AM; FM; Phono; CD-4; AUX

Mode:  Mono; 2-CH; RM; SQ; Discrete

Tape Monitor:  Push Switch

Others:  Loudness, AMP Control, Muting

AC Outlet:  1 unswitched

Power Consumption:  320 watt at full power; 35 watt at no signal

Dimensions (W x H x D):  500 x 153 x 360 mm (19-11/16" x 6-⅓2" x 14-5/32")

Weight:  15 kg (33 lbs)

 

Kenwood KX-1060 tape deck

The Kenwood KX-1060: 3-head cassette deck capable of accommodating all the latest advanced tapes.

For the fast-growing group of audiophiles who demand a cassette deck that is capable of capturing on tape the best that modern audio equipment can reproduce, here is the KX-1060, incorporating some of the most advanced cassette technology available today. Its three-head design ensures that both recording and playback of tapes of extended frequency response, low distortion, low noise, wide dynamic range and high saturation levels. The provision of separate record and playback heads also means that the recorded program can be monitored instantly as it is being recorded. Moreover, with the double Dolby noise reduction system, the recording being monitored is precisely what will be heard in actual playback. But tape recording enthusiasts will undoubtedly appreciate the ability of the KX-1060 to accommodate every kind of tape available-including the most recent and significant development, metal tape. With the variable, oscillator-adjusted bias control and separate equalization switch, any tape you choose will perform to the limits of its capability. But while these exciting features point to electronic excellence in the KX-1060, they are fully matched by the highly accurate, rugged and stable tape transport that utilizes the proven Kenwood two-belt drive system to maintain low wow-and-flutter of 0,045% WRMS. In this brochure you will find full details of the many performance and design features that make the KX-1060 one of the finest decks to be found today. But there is only one sure way we can prove to you that the KX-1060 can record and playback tapes with an outstanding musical quality.

 

The Kenwood Two Belt Transport

Although two motors might seem superior, Kenwood engineers have designed a rugged two-belt tape transport that uses a single motor producing only 0,045% WRMS Wow and Flutter. The highly stable, accurate two-belt-drive system uses a flat, wide belt to drive the precisely machined capstan while another belt drives the take-up reel. Thus no irregularity created in the build-up of tape on the take-up reel can affect the accuracy of the capstan drive. The diagram shows how this is done. In addition, the larger 210-gram flywheel produces inertial energy as high as 1094 g.cm, which is sufficient to absorb the minutest irregularities created in the rest of the transport.

 

VU meters with peak-level LED

Average recording levels are provided by large VU meters. Transient signal peaks are indicated by fast-reacting LED that operate above +6 VU. VU meters, peak LED and tape monitor provide optimum results.

Memory Index

Returns the tape to "000" after recording or playback. Shuts off automatically ready for further playback or re-recording, or repeats playback automatically.

Timer Stand-by

Set pause control in either record or playback mode. When the power is turned on by the timer, the deck will start operations. Record FM broadcasts on time, or when away. A timer such as the Kenwood AT-70 can also be put to use to play favorite waking-up music.

Input selector with ATT MIC position

Avoid excessive input levels when live recording with a high-sensitivity microphone. The ATT MIC position attenuates level by 12 dB. The mic amplifier is bypassed when not in use to gain higher Signal-to-Noise Ratio ratio/

 

More useful features of the KX-1060:

Soft-touch lever operated controls

Cassette door/tape loader

Remaining tape illumination

Full automatic shut-off in all modes

 

Specifications

Type:  Front loading stereo cassette deck with Dolby system

Track System:  4-track 2-channel Stereo/Mono Record/Playback

Recording System:  AC Bias (Bias Frequency; 85 kHz)

Erasing System:  AC

Tape Speed:  4,76 cm/sec (1-7/8 ips)

Heads:  Three Ferrite Heads - Record/Playback Combination Head Erasing Head

Motor:  Electronically Controlled DC Motor

Fast Winding Time: Approx 85 seconds with C-60 tape

Frequency Response

Normal Tape :  20 Hz to 18,000 Hz (30 Hz - 17,000 Hz ±3 dB)

Cr02 Tape :  20 Hz to 19,000 Hz (3o Hz - 18,000 Hz ± 3 dB)

Metal Tape :  20 Hz to 19,000 Hz (30 Hz - 18,000 Hz ±3 dB)

Signal-to-Noise Ratio

Dolby ON (Over 5 kHz)

Normal Tape :  63 dB

CrO₂ Tape :  65 dB

Metal Tape :  65 dB

Dolby OFF

Normal Tape :  53 dB

CrO₂ Tape :  55 dB

Metal Tape :  55 dB

Total Harmonic Distortion :  less than 1,0% (at 1 kHz, 0 VU with Metal Tape)

Wow and Flutter:  0,045% WRMS

Input Sensitivity/Impedance:

Line x 2 :  77,5 mV/50 k Ω

DIN x 1 :  0,75 mV/4 k Ω

Microphones x 2 :  0,18 mV/18 k Ω

Output Level/Load Impedance

Line x 2 :  775 mV (0VU)/100 k Ω

DIN x 1 :  775 mV (0 VU)/100 k Ω

Headphones x 1 :  48,9 mV/8 Ω  to 16 Ω

Power Requirements:  AC 120 V, 60 Hz; AC 120/240 V, 50/60 Hz

Power Consumption:  14 watts

Dimensions (W x H x D):  440 x 153 x 378 mm (17-5/16" x 6" x 14-7/8")

Weight:  8,4 kg (18,5 lbs)

 

Infinity Qb loudspeakers

State-of-the art. Technology is what sets the Qb far ahead of anything else in its range of reasonable size and price.

Three advanced drivers combine their linear output so accurately that the recorded musicians "appear" arrayed left to right and front to back, between, beyond and behind the speakers. The stereo imaging of a pair of Qb speakers is true - and truly awesome.

One big reason is our exclusive little EMIT - infinity's Electromagnetic Induction Tweeter. The superlative EMIT was utilized first in our Quantum Line Source speaker. Our EMIT,, plus an accurate and efficient midrange driver, plus our advanced new Q-woofer reproduce the entire frequency range from 42 Hz through a super-auditory 32,000 Hz with utter realism. And with as little as 15 watts per channel.

 

EMIT: demonstrably superior to domes and cones = and electrostatics

Like the finest electrostatic tweeters, Infinity's Electromagnetic Induction Tweeter has an extremely low-mass diaphragm, driven uniformly over its effective radiating area - not locally, as cones and domes are driven

Like electrostatics, the EMIT is highly responsive to high frequency transients in the music.

Unlike electrostatics, our exclusive EMIT displays vastly superior dispersion and power handling capability. It has the ability to reproduce delicate nuance and powerhouse sounds without distortion. The superlative EMIT, a significant advance over conventional tweeters, has previously been used only in Infinity's more expensive Quantum family of speakers. Now you may enjoy its sweetness, range, and accuracy in our lower-priced Series Q speakers.

In the interest of true stereo imaging. Infinity has devoted unusual care in the design of the Qb to the area of crossover frequencies (600 and 4000 Hz) and to balancing the output of our four-inch midrange and EMIT and woofer drivers.

 

A new technological advance Q-woofer

Infinity's new bass driver varies the mass of its moving element with frequency. At low frequencies the specially treated woofer cone is coupled to its butyl surround for extended response. As frequencies rise, the light cone mass is progressively uncoupled to improve transient response and raise efficiency in the upper bass range.

The butyl surround more effectively absorbs waves that reflect in conventional woofers, muddying and coloring their output

The voice-coil former, or bobbin, is of phosphor bronze. Like the aluminum traditionally used, it helps dissipate heat, but unlike aluminum it does not create reverse eddy currents that slow down rise-time. The result is noticeably better transient response. And the voice-coil is unusually long, allowing long excursions while maintaining linearity.

You don't listen to a pair of Qb speakers. You listen to the live performance through them

When you comparison-test the Qb against any other speakers near its price, do this: Raise the Qb off the floor, as its optional pedestal does - but don't hem it in between bookshelves. As with all good speakers, the Qb should be placed a couple of feet  away from the wall. Use familiar records. Switch between speakers frequently. And prepare for something that happens again and again. After a sample of the sheer realism of the Qb by Infinity, other good-to-excellent speakers begin to sound simply wrong.

 

A pair of Qb speakers "open up" all kinds of music in all frequency bands, and reveal a very real sense of depth. And you realize you've heard sound this realistic somewhere before - but not from speakers. Oh, maybe from more expensive Infinity speakers, but certainly not from anything close to the sensible price of phenomenal Qb

 

Specifications

Frequency Response:  42 - 32,000 Hz ±3 dB

Horizontal Dispersion: -2 dB at 60°,, left or right (20 kHz)

Suggested for use with amplifier or receivers of :  15 to 150 watts per channel rms

Nomnial Impedance:  4 Ω

Drivers

LF :  10" Q-woofer

MF :  4" midrange

HF :  EMIT tweeter

Crossover Frequencies:  600 and 4000 Hz

Dimensions(H x W x D);  630 x 370 x 300 mm ( 25" x 14-1/2" x 12")

Weight :  19,5 kg (43 lbs) shipping

Finish:  Birch grain vinyl on particle board

Grille:  Brown cloth, removable

 

Lenco L78 turntable

The new Lenco L78 is a further development of the proven L75 and can be counted amongst the top rank of transcription quality turntable units. All the requirements of DIN 45500 are exceeded and the technical innovations increase the sound quality and also simplify the operation of the unit.

The drive through the 4-pole motor and the conical spindle allows for infinitely variable speed adjustment. The pick-up arm, which can be balanced out in every plane, has low inertia and a friction-free movement through its knife edged bearings and adjustable stylus pressure from 0,5-5 grams and assures faultless reproduction with minimum record wear. The pick-up arm is raised from the record automatically at the end of play. The chassis is fitted with four viscously damped mounting springs which can be adjusted for levelling the unit. Due to a built-in friction the hinged dust cover of the L78 will stay open in any position down to 20°

 

Features

The Lenco L 78 Record player is a precision instrument of true Hi-Fi quality which will satisfy even the most demanding music lover.

The instrument can be used for stereo as well as monophonic listening.

The usual speeds of 16%/s, 33'/s, 45 and 78 RPM can be pre-set in click-stops and the speed can also be varied continuously from 30—86 RPM.

The light tonearm of the L 78 is a first-class example of fine mechanical precision, and guarantees clear, undistorted sound reproduction, with the greatest possible protection for your records. The tonearm is lowered onto the record by a hydraulically damped lowering device — thereby eliminating the possibility of record or needles being damaged whilst putting the tonearm onto the record.

The unit is SEV, DEMKO, NEMKO, SEMKO and CSA tested and approved.

 

 

Technical Description

The very silent 4-pole motor (44) is spring mounted onto a rigid steel baseplate. The dynamically balanced turntable is made of die-cast zinc, and weighs 4 kg.

The power is transmitted from the conical motor shaft (43) to the turntable by a rubber covered idler wheel (41). The speed is changed by moving the idler wheel on the motor shaft.

The miniature ball-bearings fitted into the tonearm allow for a free sideways movement, and the knifeedge bearing keeps friction to a minimum.

An adjustable sliding weight (5) enables one to set the stylus pressure exactly to suit the cartridge being used. An automatic brake (23) comes into operation when the turntable is switched off.

All tonearms can be supplied with the anti-skating device (3, 28, 29).

Every L78 Is supplied with a centre piece for records with a large centre hole, a stroboscope disc for exact setting of speed, a stylus-adjusting gauge for accurate setting of stylus overhang, a set of shock-absorbing mounting supports anda cut out template (only required for chassis model).

 

Specifications

Shut-oof Switch

The L78 features a new mechanical shut-off which switches off the unit and raises the pick-up arm at the end of the record. This shut-off mechanism can be disconnected if not required, for example for language courses, by turning the knob to "manual"

Motor:  4-pole motor with conical spindle

Speeds:

Turntable speed infinitely variable between 30 and 86 rpm with locations for:  16-2/3, 33-⅓, 45 and 78 rpm

Wow and Flutter:  ±0,11% (±0,06% weighted to DIN 45507)

Hum Level for magnetic cartridges:  -60 dB

Rumble Weighted (DIN 45539):  -60 dB

Speed change for a 10% change in main voltage :  ±0,2%

Maximum deviation of speed using a cartridge tracking at 6 p 0,3%

Pick-up Arm

Pick-up arm with counterweight, with knife-edged bearings

Adjustable stylus pressure from 0,5-5 g

Removable plug-in shell of light metal to accommodate all pick-up cartridges

Total Length of Arm:  314 mm

Tracking distance between vertical spindle and turntable spindle:  210 mm

Stylus Overhang:  17,1 mm

Adjustment for Stylus Position:  12 mm

Tracking Angel:  23° 12'

Tracking Error wit correct setting for stylus:  ±0,8°

General: 

Dynamically balanced turntable

Hydraulically damped lowering arm for pick-up

Viscously damped mounting springs

Power Requirements:  110 V, 220 V at 50 Hz (switchable) and 110 V at 60 Hz

Dimensions

Baseplate of 2 mm thick steel :  385 x 330 mm

Height required above baseplate :  55 mm

Depth required below baseplate :  75 mm

Turntable diameter :  312 mm

Weights

Balanced die-cast zinc turntable :  4 kg

Total weight of chassis :  8,5 kg

Total weight of chassis with packing :  10,5 kg

Total weight with plinth and cover :  12,00 kg

Total weight with plinth and cover and packing :  15,2 kg