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What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Visualizzazione post con etichetta ROTEL. Mostra tutti i post
Visualizzazione post con etichetta ROTEL. Mostra tutti i post

Rotel RX-802 receiver

We've the fine wood-grain cabinet off of the RX-802 to give you a perfect picture of what performance in a high-quality AM/FM stereo receiver looks like. So see for yourself. It's all here. A masterful blend of the very latest circuitry. Low-noise, long-life silicon transistors integrated circuits. An AM/FM front end that's out front in sensitivity and performance. A power amplifier section that's - well, we'll let you decide for yourself what it is after hearing the giant 6,800 mfd block capacitors in action. And an advanced NF and IC equalizer amplifier. This and more, all within the good looking RX-802 enclosure. And all there for one reason. To give you the most satisfying experience in stereo dynamics that you've had to date. Inside and out, the RX-802 is not only the sweetest looking receiver on the music market, it's the sweetest sounding sweetest looking.

 

The performance begins here

With a high-performance, high-sensitivity FM front end. The RX-802 has dual-gate MOS FET's and a 4-gang linear-frequency tuning capacitor, the latter largely contributes to sensitivity and performance which you will translate directly into musical enjoyment. If you.ve thought all along that all receivers were basically the same, you'll stop where RX-802 performance begins.

 


FM IF and AM IF sections

In the FM IF section, 2 high-gain ICs housing 6 differential amplifiers and two linear-phase ceramic filters get together to achieve brilliant selectivity and rejection characteristics. In the AM IF section, a hard working ceramic filter provides equally efficient selectivity. Together with an RF stage in the AM front end, the sum of RX-802 AM features is performance that perks up all ears, no matter how tired.

 

A tower of power

A stable, split-power supply high-lights the amplifier section, which includes to 6,800 midblock capacitors and an oversized power transformer. That's a lot of satisfaction. It's also a lot of power which the RX-802 maintains constantly. This section also has directly-coupled OCL complementary circuitry to keep the power up and the distortion down, from one end of the audio spectrum to the other - 50 watts per channel, min. RMS, both channels driven simultaneously into 8 ohms from 20 to 20,000 Hz with no more than 0,5% Total Harmonic Distortion. And "steady she goes" doesn't only apply to ships. Now it describes the dampening factor and output characteristics which achieve superb transient response throughout the very low frequency range.

 

NF and IC equalizer amplifier

Genuinely outstanding RIAA characteristics are achieved through low-distortion, directly coupled NF (negative Feedback) circuitry combined with high voltage IC. Reproduction is more transparent than ever before. And added bonus is that tone control circuitry benefits from the same directly coupled NF circuitry.

 

PLL MPX section

Phase Lock Loop integrated circuitry and other new circuitry innovations in the MPX section result in improved stereo separation and frequency response. Distortion goes way down and stays there.

 


Specifications

Amplifier Section

Continuous Power Output (min. RMS)

50 watts per channel, both Channel Driven into 8 Ω  from 20 to 20,000 Hz with no more than 0,5% t.h.d

60 watts per channel, both Channel Driven into 8 Ω at 1 kHz with no more than 0,5% t.h.d

Harmonic Distortion:  less than 0,05% (8 Ω , 1 kHz, 90% rated power)

Intermodulation Distortion :  less than 0,15% (8 Ω , 90% rated power)

Power Bandwidth (IHF):  5 to 50,000 Hz (8 Ω )

Frequency Response:  10 to 100,000 Hz ±3 dB, 1W/1W

Damping Factor:  40 (8 Ω , 1 kHz)

Input Sensitivity/Impedance:

Main IN :  100 mV/ 34 k Ω

Tape Monitor :  140 mV / 26 k Ω

Aux 1, 2 :  140 mV / 26 k Ω

Phono 1, 2 :  2,4 mV / 40 k Ω

Tape Output Level:  280 mV/ 1,7 k Ω

Phono Overaload:  150 mV (1 kHz)

Phono Equalization:  RIAA standard ±0,5 dB

Controls

Bass :  ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Loudness Contour:  ±6 dB/100 Hz +4 dB/10 kHz

Crosstalk:  50 dB / 10 kHz

Hum and Noise (Continuous Power Output)

Phono :  65 dB

Tape :  80 dB, Residual 0,5 mV

Speaker Impedance:  4 to 16 ohms

FM Tuner Section

Frequency Range:  88 to 108 MHz

Sensitivity (IHF):  1,5 microvolts

Signal-to-Noise Ratio :  70 dB

Harmonic Distortion: 

Mono :  0,2%

Stereo :  0,4%

Selectivity:  80 dB ±400 kHz

Capture Ratio:  1,0 dB

Stereo Separation:  40 dB at 100 Hz, 40 dB at 1 kHz, 35 dB at 10 kHz

IF Rejection:  100 dB

Image Rejection:  100 dB

Spurious Response Rejection:  100 dB

SCA Suppression:  70 dB

AM Suppression:  55 dB

AM Tuner Section

Frequency Range:  520 to 1650 kHz

Sensitivity:  15 microvolts

Selectivity:  50 dB ±10 kHz

IF Rejection:  80 dB

Image Rejection:  80 dB

Signal-to-Noise Ratio:  55 dB

General

Power Requirements:  AC 100, 120, 220, 240 V, 50/60 Hz

Power Consumption:  450 W max

Dimensions (W x D x H):  24" x 15" x 5-3/8"

Weight:  13,5 kg (35,2 lbs)


 

Rotel RX-602 receiver

AM/FM Stereo Receiver

Add a high performance, high-sensitivity tuner to advanced PLL MPX circuitry, then add a high-power, low-distortion power amplifier to all the other RX-602 features, and what does it all add up to. An experience in sound that you'll not only want to have around to set the pace of your living room enjoyment, but one you'll also find hard to resist because the price makes the professional quality so readily accessible.

 

A high-performance, high-sensitivity tuner

For truly fantastic sound enjoyment, the high-performance,, high-sensitivity tuner Rotel engineers for the RX-602 gives you super high sensitivity, excellent rejection characteristics, and distortion  so low it's negligible. For a big boost in selectivity along with fasting reliability, ceramic filters and advanced integrated circuitry go snugly into the FM IF section.

 

The Power Amp

It's high-power, low-distortion all the way. With split power supply and 100% directly coupled OCL circuitry (OCL circuitry has low-noise silicon transistors that give 40W/40W continuous music power into 8 ohms at less than 0,5% T.H.D. both channel driven - or 35W/35W RMS continuous power into 8 ohms at less than 0,5% T.H.D. both channel driven from 20 to 30,000 Hz). If that's not superb output, you tell us what is.

Advanced NF and IC equalizer amp

Advanced because of the advanced electronics - low-distortion , 2-stage directly coupled NF (Negative Feedback) circuitry with high-voltage integrated circuitry achieve genuinely outstanding RIAA characteristics. For terrifically transparent reproduction quality, tone control circuitry also features directly coupled negative feedback circuitry.

 

FM and Audio Muting

FM muting effectively removes inter-station noise during tuning. Audio muting instantly lowers the volume level by -20 dB without disturbing the volume setting when temporary lowering of volume is necessary.

 

Extra-wide Linear FM dial scale and large tuning

The extra width of the linear FM Dial scale results in easy , precise tuning. The size of the vernier scale makes it easy to see. Large tuning meters complement this ease all the more with smooth flywheel action knob that get you right-on to a station quickly.

 

PLL MPX section

Utilization of PLL (Phase Loock Loop) integrated circuitry and other improved circuitry in the MPX section allows for effective stereo esparation and excellent frequency response. Distortion never gets in the way of stereo enjoyment.

 

The performance and the advanced electronics that make RX-602 enjoyment possible are enclosed in a cabinet that stands out in any system; hair-line brushed extruded aluminum front with luxury  metal knobs. Cabinet itself has a beautiful simulated walnut finish. This long, lean look is human-engineered up, down, and all-around to be a great looker and an equally great performer.

 


Specifications

Amplifier Section

Music Power Output (IHF) :  170 W (4 Ω )

Continuous Power Output (RMS, each Channel Driven) :  60 W / 60 W (4 Ω ); 45 W / 45 W (8 Ω )

Continuous Power Output (RMS, both Channels Driven) :  48 W / 48 W (4 Ω ); 40 W / 40 W (8 Ω ); 35 W / 35 W (8 Ω , from 20 to 20,000 Hz at less than 0,5% T.H.D.)

Harmonic Distortion:  less than 0,1% (32 W/32 W RMS)

Intermodulation DIstortion :  less than 0,15% (32 W/32 W RMS)

Power Bandwidth (IHF):  5 to 50,000 Hz (8 Ω )

Frequency Response:  10 to 100,000 Hz ±3 dB

Damping Factor:  40 (8 Ω , 1 kHz)

Input Sensitivity/Impedance:

Main IN :  820 mV/ 33 k Ω

Tape Monitor :  130 mV / 50 k Ω

Aux 1, 2 :  130 mV / 60 k Ω

Phono 1, 2 :  2,5 mV / 60 k Ω

Tape Output Level:  300 mV/ 3 k Ω

Phono Overaload:  130 mV (1 kHz)

Phono Equalization:  RIAA standard ±0,5 dB

Controls

Bass :  ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Loudness Contour:  ±8 dB/100 Hz +4 dB/10 kHz

Crosstalk:  50 dB / 10 kHz

Hum and Noise (Continuous Power Output)

Phono :  65 dB

Tape :  80 dB, Residual 0,5 mV

Speaker Impedance:  4 to 16 ohms

FM Tuner Section

Frequency Range:  88 to 108 MHz

Sensitivity (IHF):  1,8 microvolts

Signal-to-Noise Ratio :  67 dB

Harmonic Distortion:  0,2%

Selectivity:  70 dB ±400 kHz

Capture Ratio:  1,5 dB

Stereo Separation:  40 dB at 100 Hz, 40 dB at 1 kHz, 35 dB at 10 kHz

IF Rejection:  100 dB

Image Rejection:  80 dB

Spurious Response Rejection:  100 dB

SCA Suppression:  70 dB

AM Suppression:  55 dB

AM Tuner Section

Frequency Range:  525 to 1650 kHz

Sensitivity:  20 microvolts

Selectivity:  30 dB

IF Rejection:  50 dB

Image Rejection:  50 dB

General

Power Requirements:  Ac 100, 120, 220, 240 V, 50/60 Hz

Power Consumption:  200  max

Dimensions (W x D x H):  22-1/2" x 13" x 5-3/8"

Weight:  10 kg (22 lbs)


 

Rotel RX-402 receiver

AM/FM Stereo Receiver

The RX-402, if the spirit moves you toward something special. It'll take you there.

You can't beat the big quality advantages the RX-402 AM/FM Stereo Receiver adds to Rotel's existing line-up of performance equipment. It's versatile for sure, you can add it confidently to an existing stereo system, or you can use it for starters and build a living room system around it. Whichever, it's been engineered throughout to take you in the direction of something very special, which we'd like to call a solidly satisfying world of stereo, this is what stereo should be-and this the way we've mixed and matched all the advanced electronics in the RX-402 so it comes out that way.

 


High Performance Sound- Oriented Tuner

We don't mean shallow words when we say high performance sound-oriented tuner. We mean things more substantial like an FM FET front end for outstanding sensitivity with very low distortion and excellent rejection characteristics. We mean ceramic filters and integrated circuitry in the FM IF section for stability and selectivity. We mean the things that mean high performance.

Extra Wide Linear FM Dial Scale

The extra width of the linear FM dial scale is that something extra that's standard on all Rotel receivers. It makes for easy, precise tuning on the easy-to-see vernier scale.

Large Dual Function Tuning Meter and Large Tuning Knob

Clear indication of signal strength, and center tuning make for exacting accuracy, and so does the smooth flywheel action of the over-size tuning knob.

Advanced PLL-MPX for Improved Stereo Separation

Stereo separation isn't an abstract term created to confuse you. It's something very real, and you've got to compare the good with the bad to really get your teeth into it. Rotel makes it good , with PLL integrated circuitry and other improved circuitry in the MPX section. And in addition to effective separation over a wide frequency range, this circuitry also means excellent frequency response with distortion so low it's negligible.

 

High-power low-distortion power amp

The RX-402 gives you a split power supply and all directly coupled OCL circuitry with low-noise silicon transistors used throuhout for superb output; 20 W / 20 W RMS continuous power into 8 ohms at less than 0,5% T.H.D. both channels driven from 20 Hz to 30 kHz.

Electronic Protection Circuit

This is automatic resettable protection circuitry that protects your speaker system from overload. It's also protection for electronic components in DC circuits.

 


Specifications

Amplifier Section

Music Power Output (IHF) :  110 W (4 Ω )

Continuous Power Output (RMS, each Channel Driven) :  36 W / 36 W (4 Ω ); 28 W / 28 W (8 Ω )

Continuous Power Output (RMS, both Channels Driven) :  26 W / 26 W (4 Ω ); 24 W / 24 W (8 Ω ); 20 W / 20 W (8 Ω , from 20 to 20,000 Hz at less than 0,5% T.H.D.)

Harmonic Distortion:  less than 0,15% (18 W/18 W RMS)

Intermodulation DIstortion :  less than 0,2% (18 W/18 W RMS)

Power Bandwidth (IHF):  5 to 50,000 Hz (8 Ω )

Frequency Response:  10 to 75,000 Hz ±3 dB

Damping Factor:  30 (8 Ω , 1 kHz)

Input Sensitivity/Impedance:

Main IN :  580 mV/ 35 k Ω

Tape Monitor :  125 mV / 15 k Ω

Aux :  125 mV / 22 k Ω

Phono :  2 mV / 60 k Ω

Tape Output:  340 mV/ 5 k Ω

Phono Overaload:  85 mV (1 kHz)

Phono Equalization:  RIAA standard ±1 dB

Controls

Bass :  ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Loudness Contour:  ±8 dB/100 Hz =5 dB/10 kHz

Crosstalk:  50 dB

Hum and Noise (Continuous Power Output)

Phono :  65 dB

Tape :  80 dB, Residual 0,5 mV

Speaker Impedance:  4 to 16 ohms

FM Tuner Section

Frequency Range:  88 to 108 MHz

Sensitivity (IHF):  2,0 microvolts

Signal-to-Noise Ratio :  67 dB

Harmonic Distortion:  0,2%

Selectivity:  70 dB ±400 kHz

Capture Ratio:  2 dB

Stereo Separation:  35 dB at 1 kHz, 30 dB at 10 kHz

IF Rejection:  80 dB

Image Rejection:  60 dB

Spurious response rejection:  70 dB

SCA Suppression:  70 dB

AM Suppression:  55 dB

AM Tuner Section

Frequency Range:  525 to 1650 kHz

Sensitivity:  20 microvolts

Selectivity:  30 dB

IF Rejection:  45 dB

Image Rejection:  50 dB

General

Power Requirements:  Ac 100, 120, 220, 240 V, 50/60 Hz

Power Consumption:  200 W max

Dimensions (W x D x H):  18-5/8" x 13" x 4-1/2"

Weight:  7 kg (15 lbs)


 

Rotel RD-850 cassette deck

RD850 is a full-feature cassette deck which makes quality tape recording easy and dlivers excellent sound reproduction from pre-recorded tapes

Incorporating Dolby C noise reduction,RD850 provides a Signal-to-Noise Ratio of 72 dB for virtually noise-free recording and playback. To make RD850 compatible with a wide range of pre-recorded tapes. Dolby B is also included. Bias settings for normal, chrome or chrome-equivalent, and metal tapes give flexibility in your choice of tape formulations. LED record-level meters and soft-touch controls make RD850 a pleasure to use. A microphone input is included for live recording.

Technical refinements include a precision tape transpport mechanism for accurate, transparent sound reproduction from all your favourite cassettes. An electronically controlled high-torque DC motor minimizes Wow and Flutter. To maintain optimum distortion-free musical reproduction. RD850 uses a Sendust record/play head. Exceptionally hard, durable and ideally suited to recording and playback applications. Sendust is the material of choice for high-performance cassette decks and gives RD850 an extra dimension of quality and musiclity.

Like all components in the critically acclaimed Rotel line, RD850 emphasizes performance, reliability, ease of use and attractive styling. It is an excellent complement to other models in the Rotel hi-fi range of quality audio equipment and represents outstanding value .

Dolby Noise Reduction

A severely limited Signal-to-Noise Ratio (in the 50 to 55 dB range with perhaps a 10 dB peak) has always been an inherent weakness of the cassette format. While the dynamic range of most live music lies in the area of 70 dB to 80 dB, cassettes with no noise reduction are capable of a 65 dB dynamic range at best.

Dolby B was a dramatic breakthrough in increasing dynamic range by lowering the noise threshold by up to 10 dB in upper frequencies (where tape hiss is concentrated). With the advent of Dolby C, a 20 dB improvement in Signal-to-Noise Ratio is possible, with NR extending a full two octaves beyond the range covered by Dolby B, and Dolby C delivers much more stable and accurate  response in the higher frequency ranges while eliminating harmonic distortion.

RD850 incorporates Dolby C NR to give you the full benefit of these significant developments. Dolby B is included to make RD850 compatible with the everincreasing library of pre-recorded tapes encoded using this system.

 


Specifications

System:  4-track, 2 -channel

Motor:  Electronic DC Governor

Heads:

Rec/Play :  Sendust Guard head

Erase :  Ferrite core

Tape Speed:  4,8 cm/sec

Wow and Flutter:  0,2% (DIN);  0,08% (WRMS)

Total Harmonic Distortion (Rec/Power Bandwidth, 400 Hz):  1,0% (Metal)

Frequency Response:

Normal, LH Tape :  30 to 17,000  Hz ±3 dB

Special Tape :  30 to 17,000 Hz ±3 dB

Metal Tape :  30 to 18,000 Hz ±3 dB

Signal-to-Noise Ratio (WTD 0 dB =580 mV, Chromium):

Dolby NR In :  64 dB (B type);  72 dB (C type)

Dolby NR Out :  55 dB

Input Sensitivity/Impedance:

Mic :  0,3 mV/10 k Ω

Line :  58 mV/33 k Ω

Output Level/Impedance

Line :  580 mV/1 k Ω

Fast Wind Time (C-60):  90 sec.

Tape Selector

Normal, LH :  100% (BIAS);  120 µs (EQ)

Special :  150% (BIAS);  70 µs (EQ)

Metal :  220% (BIAS);  70 µs (EQ)

Power Requirements:  120V, 220 V, 240 V, 50/60 Hz

Power Consumption:  22 watts

Dimensions (W x H x D):  430 x 117 x 270 mm (16-15/16" x 4-5/8" x 10-5/8")

Weight:  3,9 kg (8,58 lbs)


Rotel RD-870 cassette deck

High-end performance at a mid-range price. Rotel once again combines outstanding sound quality and power handling capabilities to ensure listening satisfaction every time.

Rotel's new high-performance  cassette deck combines exceptional musicality with a number of important design features normally found only on much more expensive decks. RD870 is an ideal component for the demanding audio enthusiast who seeks excellent musical reproduction, reliability and recording versatility.

A two-head deck, RD870 features a Sendust record/play head for best performance and durability. Its two-motor drive system and extremely precise critically engineered mechanism combine for very low Wow and Flutter, resulting in highly accurate sound reproduction. Solenoid soft-touch controls add precision and ease of use.

RD870 incorporates Dolby B and C noise reduction systems and adds the outstanding HX-Pro headroom extension system. The superb performance advantages of HX-Pro include automatic bias adjustment during recording, maximixing dynamic range without tape saturation, optimizing Signal-to-Noise Ratio and ensuring maximum accuracy of high frequency response. Your tapes will sound more life-like and dynamic, with superb reproduction of high frequencies. One of the most advanced and exciting developments in recent cassette deck technology, HX-Pro greatly improves the quelity of your recordings, and does so without the side-effects associated with some earlier systems. In addition tapes recordedusing the HX-Pro system may be played back on decks without HX-Pro with no deterioration of sound quality. This means you can enjoy the benefits of HX-Pro when playing back your tapes on a portable or automobile cassette deck without the HX-Pro feature.

Bias settings for normal, chrome or chrome-equivalent and metal tapes give maximum flexibility in your choice of tape formulations. For best results from virtually all commercial tape brands, a manual fine bias adjustment has been incorporated. By allowing you to accurately match the bias characteristics of most quality tapes, this feature helps to ensure best sound quality without restricting you to the tape brands for which the deck was factory-calibrated.

A dual-concentric record-level control allows separate adjustment of each channel, and 20-segment LED meters accurately display recording levels.

Additional convenience features include "memory" and Repeat" for fast location of favourite tracks, "pause" and recrd-mute". A headphone jack is also included.

 


Specifications

System:  4-track, 2 -channel

Motor:  Brushless Direct Drive FG Servo DC

Heads:

Rec/Play :  Sendust core head

Erase :  Ferrite core

Tape Speed:  4,8 cm/sec

Wow and Flutter:  0,1% (DIN);  0,035% (WRMS)

Total Harmonic Distortion (Rec/Power Bandwidth, 400 Hz):  0,9% (Metal)

Frequency Response:

Normal, LH Tape :  30 to 18,000  Hz ±3 dB

Special Tape :  30 to 19,000 Hz ±3 dB

Metal Tape :  30 to 20,000 Hz ±3 dB

Signal-to-Noise Ratio (WTD 0 dB =580 mV, Chromium):

Dolby NR In :  64 dB (B type);  73 dB (C type)

Dolby NR Out :  55 dB

Input Sensitivity/Impedance:

Line :  50 mV/33 k Ω

Output Level/Impedance

Line :  580 mV/1 k Ω

Fast Wind Time (C-60):  80 sec.

Tape Selector

Normal, LH :  100% (BIAS);  120 µs (EQ)

Special :  150% (BIAS);  70 µs (EQ)

Metal :  220% (BIAS);  70 µs (EQ)

Power Requirements:  120V, 220 V, 240 V, 50/60 Hz

Power Consumption:  27 watts

Dimensions (W x H x D):  433 x 115 x 300 mm (17-1/32" x 4-17/32" x 11-13/16")

Weight:  5,2 kg (11,44 lbs)


Rotel RC-1000 pre amplifier


Rotel RC-1000
A stereo preamplifier/control center featuring a ten-octaave graphic equalizer with center frequencies of 32, 63, 125, 250, 500, 1 k, 2k, 4k, 8k, and 16 kHz. Other features include; a magnetic phono input with selectable loads of 35 k, 50 k and 70 k ohms; a moving coil (MC) phono pickup input; automatic dubbing from/to either of two recorders; and a subsonic filter for the phono input.
There are inputs for magnetic phono, MC phono, tuner, aux, and two tape. One set of stereo line level outputs is provided.
There are controls for volume, balance, ten equalizers, tape monitor/tape dubbing selector, and phono input load selection. Switches for power, octave equalizer on-off, subsonic filter, stereo/mono mode, loudness compensation, 20 dB audio muting, and input selection. Two switched AC outlets are provided.
Performance. The rated output is 1 volt, and all tests were conducted at thic value. With the equalizers in the center,, or Off, position, the frequency response measured ±1 dB from 20 to 20,000 Hz frequency. The output clipping level measured 4,2 volts, with a worse-case distortion of 0,8%.
The equalization range for each equalizer control was nominally ±12 dB at the center frequency. The worse-case distortion with full equalization applied and no more than 1 volt output measured 0,05% T.H.D. the equalizers are relatively broad band and can function either as graphic equalizers or standard tone controls if two or more controls are used to contour the frequency response. Because of their broad characteristic, the equalizers avoid the usual "peaky" midband equalization generally associated with octave equalizers.
The subsonic filter, which is in the phono channel, provides 6 dB attenuation at 10 Hz with absolutely no effect from 20 Hz up. The magneti input hum and noise measured 70 dB, stereo separation was into the noise level.
 Overall dimensions are 16-15/16-inch (wide); 3-27/32-inch (high); 11-13/32-inch (deep). Weight is 10,8 lbs.


Specificationspre Amplifier Section
Output Voltage/Impedance
Rated output :  1 V/1 k Ω
Max. Output (0,1% T.H.D.0 :  3 V/1 k Ω
Total Harmonic Distortion 9rated output, 20 - 20,000 Hz):
Output :  0,03%
Frequency Response:
Output :  5 - 70,000 Hz ±1 dB
Huma nd Noise (IHF A network):
Tuner, Aux :  95 dB
Tape Monitor 1, 2 :  95 dB
Residual :  0,05 mV ( Volume set at min.)
Input Sensitivity/Impedance:
Tuner, Aux :  150 mV/30 k Ω
Tape Monitor 1,2 :  150 mV/30 k Ω
Overload (1 kHz, 0,1% T.H.D.):
Tuner, Aux :  6 V
Tape Monitor 1, 2 :  6 V
Phono Equalizer Section:phono Equalization:  ±0,5 dB (20 to 20,000 Hz)
Huma and Noise (IHF A network):
Phono ! :  75 dB
Phono 2 (MC) :  65 dB
Input Sensitvity/Impedance:
Phono 1 :  2,5 mV/35, 50, 70 k Ω
Phono 2 (MC) :  0,12 mV/30 k Ω
Overload (1 kHz, 0,5% T.H.D.)
Phono 1 :  180 mV
Phono 2 (MC) :  10 mV
Headphones Amplifer Section (Ref. Pre Amplifier Rated Input)
Total Harmonic Distortion (1 kHz) :  0,6%
Frequency Response:  30 - 10,000 Hz +0 dB -3 dB
Huma and Noise (IHF A network):  85 dB
Residual Noise:  35 µV
Output Impedance :  4 - 16 ohms
Crosstalk (at 10 kHz):  40 dB
Control Characteristics:
Octave Equalizer (±12 dB) :  32, 63, 125, 250, 500, 1000, 2000, 4000, 8000, 16000
Loudness Contour:  100 Hz (+10 dB), 10 kHz (+4 dB)
Subsonic Filter:  15 Hz /12 dB/oct
Audio Muting:  -15 dB
Miscellaneous
Power Requirements:  120 V/60 Hz or 220 V/50 Hz or 240 V/50 Hz or 100, 120, 220, 240 V \; 50/60 Hz
Power Consumption:   16 watt max
Dimensions (W x H x D):  430 x 98 x 290 mm
Weight:  4,9 kg (10,78 lbs)

Rotel BR-1000 power amplifier


RB-1000 Power Amplifier
A stereo power amplifier FTC rated for 8 ohms at 65 watts RMS per channel, 20 to 20,000 Hz , at a distortion no higher than 0,003% T.H.D.
There is one set of line level stereo inputs. Putputs for two speaker systems. An output hold-off prevents power supply turn-on transients from being fed to the speakers. The front panel has controls for left input level and right input level. Switches for power, speaker system A, and speaker system B. two switched AC outlets are provided.
Performance. The power output per channel at the clipping level with both channels driven 20 to 20,000 Hz measured 66 watts RMS. The Frequency Response at 66 watts/8 ohms was "ruler flat" from 20 to 20,000 Hz at a distortion no higher than 0,022% T.H.D. at any frequency.
Overall dimensions are 16-15/16-inch (wide), 3-27/32-inch (high), 11-11/32-inch (deep). Weight is 15,6 lbs.

Specifications:
Continuous Power Output:  65 watts per channel min. RMS both channels driven into 8 Ω or 75 watts per channel both channels driven into 4 Ω from 20 Hz to 20 kHz with no more than 0,03% T.H.D.
Total Harmonic Distortion (20 Hz to 20,000 Hz): 
No more than 0,03% (continuous rated power output)
No more than 0,01% (32,5 watts per channel power output,, 8 Ω)
No more than 0,01% (1 watt per channel power output, 8 Ω)
Intermodulation Distortion (60 Hz : 7 kHz = 4 : 1):
No more than 0,03% (continuous rated power output)
No more than 0,01% (32,5 watts per channel power output,, 8 Ω)
No more than 0,01% (1 watt per channel power output, 8 Ω)
Frequency Response:  5 - 100,000 Hz +0 dB -1 dB (1 watt per channel power output, 8 Ω)
Input Sensitivity/Impedance:  1 V/20 k Ω
Damping Factor:  50 (20 - 20,000 Hz , 8 Ω)
Hun and Noise:  110 dB )IHF, A network)
Residual Noise:  150 µV
Crosstalk (10 kHz):  55 dB
Power Requirements:   120 V/60 Hz or 220 V/50 Hz or 240 V/50 Hz or 100, 120, 220, 240 V \; 50/60 Hz
Power Consumption:   500 watt max
Dimensions (W x H x D):  430 x 98 x 290 mm
Weight:  7,1 kg (15,62 lbs)

Rotel RA-930AX amplifier


Rotel Stereo Integrated Amplifier RA-930AX

Specifications
Continuous Power Output:  30 wattts per channel, min. RMS both channels driven into 8 ohms from 20 to 20,000 Hz with no more than 0,03% Total Harmonic Distortion
DIN Output:  50 watts per channel (1 kHz, 4 Ω , 1 % Total Harmonic Distortion)
Music Power:  110 watts
Total Harmonic Distortion (20 to 20,000 Hz from Aux): 
Continuous Rated Power Output :  no more than 0,03%
Continuous 1/2 Rated Power Output :  no more than 0,03%
1 watt per Channel Power Output, 8 Ω  :  no more than 0,03%
Intermodulation Distortion (60 Hz : 7 kh = 4 : 1)
Continuous Rated Power Output :  no more than 0,03%
Continuous 1/2 Rated Power Output :  no more than 0,03%
1 watt per Channel Power Output, 8 Ω  :  no more than 0,03%
Output IMpedance
Speaker :  4 Ω  minimum
Headphone :  8 - 2,000 Ω
Damping Factor:  180 (20 to 20,000 Hz, 8 Ω )
Input Sensitivity/Impedance: 
Phono :  2,5 mV/47 k Ω
CD, Tuner :  150 mV/20 k Ω
Tape, Aux : 150 mV/20 k Ω
Overload Level (T.H.D. 0,5%, 1 kHz)
Phono :  180 mV
CD, Tuner :  5 V
Tape, Aux ;  5 V
Frequency Response
Phono :  20 to 15,000 Hz ±0,3 dB (RIAA Std)
CD,Tuner :  10 to 40,000 Hz ±1 dB
Tape, Aux :  10 to 40,000 Hz ±1 dB
Tone Control
Bass :  ±6,0 dB at 100 Hz
Treble :  ±6,0 dB at 10 kHz
Signal-to-Noise Ratio (IHF, A Network)
Phono :  80 dB
CD, Tuner, Tape, Aux : 100 dB
Miscellaneous
Power Requirement:  120 V, 220 V, 240 V;  50/60 Hz
Power Consumption:  180 watts
Dimensions (W x H x D):  440 x 92 x 304 mm (17-3/8" x 3-5/8" x 12")
Weight:  5,9 kg (13,0 lbs)


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Rotel RT-930AX tuner


Rotel AM/FM Stereo Tuner RT-930AX
Specifications
FM Tuner Section
Usable Sensitivity:  12,8 dBf/1,2 µV (75 Ω )
50 dB Quieting Sensitivity:
Mono :  17,2 dBf/2 µV (75 Ω )
Stereo :  40,7 dBf/30 µV (75 Ω )
Signal-to-Noise Ratio (at 65 dBf):
Mono :  75 dB
Stereo :  70 dB
Total Harmonic Distortion (at 65 dBf)
Mono (1 kHz) : 0,08%
Stereo (1 kHz) :  0,3%
Frequency Response: 30 to 15,000 Hz ±1,5 dB
Capture ratio:  1,5 dB
Alternate Channel Selectivity:  63 dB (±400 kHz)
Spurious Response Ratio:  95 dB
Image Response Ratio:  65 dB
IF Response Ratio:  90 dB
AM Suppresion Ratio:  60 dB
Stereo Separation:
100 Hz / 1 kHz / 10 kHz :  35 dB / 40 dB / 30 dB
Subcarrier Product Ratio:  60 dB
SCA Rejection Ratio:  70 dB
Output Level :  720 mV
Antenna Input:  75 Ω  unbalanced
AM Tuner Section
Sensitivity
AM :  350 µV/m
LW :  750 µV/m
Selectivity
MW :  27 dB
LW :  25 dB
Signal-to-Noise Ratio
MW :  55 dB
LW :  55 dB
Image Response Ratio
MW :  40 dB
LW :  40 dB
IF Response Ratio
MW :  60 dB
LW :  60 dB
Antenna:  Loop Antenna
Miscellaneous
Power Requirement:  120 V, 220 V, 240 V; 50/60 Hz
Power Consumption:  10 watts
Dimensions (W x H x D):  440 x 72 x 257 mm (17-3/8" x 2-7/8" x 10-1/8")
Weight:  3,2 kg (7,04 lbs)


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