Teac AS-200

 The Teac Model AS-200 Integrated Amplifier combines a 100 watt (at 4 ohms) total power output with centralized stereo system control. A differential-type integrated amplifier with high-cut and low-cut filters provides a wide dynamic range with natural-sound reproduction. Switched power outlets, complete facilities for stereo system interconnection, and hidden panel controls permit elaborate system setup with centralized control from this stylish amplifier.

 Features:

Differential-type integrated amplifier:  providing a wide dynamic range, stability, and high-quality performance.

Transistorized amplifier:  with high sensitivity FET input circuit and three-stage direct coupled amplifiers.

Bass and treble controls:  for tone compensation with tone cancel switch.

Preamp center-channel output:  for three-dimensional stereo effects.

Switched and unswitched AC outlets:  for central stereo system power source control.

Large variety of input connectors:  on rear panel for versatile application with RIAA equalization for phono inputs.

Overload protection:  by push-to-reset circuit breakers.

Attractive front panel:  with only essential controls showing; infrequently used controls are hidden behind lower front panel.

Specifications:

Continuous Power Output:  50 W / 50 W at 4 Ω

Power Bandwidth: 30 to 30,000 Hz

Frequency Response:  20 to 80,000 Hz

High Frequency Distortion:  less than 0,5%

IM Distortion:  less than 0,5%

Signal-to-Noise Ratio: 

Phono : less than 65 dB

High Level :  less than 75 dB

Controls:

Low Tone  : ±10 dB variation at 100 Hz

High Tone : ±10 dB variation at 10,000 Hz

Output :

Pre-amplifier :  1 volt

Tape Recording : 0,2 volt

Center Channel :  1,4 volt

Input:  Tuner; Aux 1 and 2; Phono 1 and 2; Tape Deck 1 and 2

Hidden Panel Controls:

Switches:  Phono,High-cut filter, Low-cut filter; tone and loudness

Selector Switches:  Mode (Reverse, Stereo, Lift, Right and L+R), Speaker (off, Main, remote, and M+R)

Controls:  Bass and Treble, Headphone jack

Teac AE-200

 The Teac model AE-200 incorporates for amplification a "differential circuit" widely used in computers and instrumentation data recorders which are also manufactured at the Computer Products Division of Teac. The result is an extremely wide dynamic range and virtually flat response extending well into the low frequency range.

For ultimate performance of the differential amplifier, a dual power supply system is employed in the Teac model AE-200 (+40 volt, -0 volt, -40 volt). This permits elimination of condensers from the output circuit, to provide automatic compensation of delicate current balance and virtually flat response. This is particularly evident in the low frequency range.

In addition to an ordinary protective circuit, a special thermo-breaker is provided in the Teac AE-200 for complete protection from accidental damage to the amplifier by short circuits in the speaker wiring. Should the breaker be tripped by a short circuit, the cause should be eliminated and the reset buttons depressed to restore operation of the amplifier.

 The Teac model AE-200 gives you 50 clean watts per channel at 8 ohms, and 60 watts per channel at 4 ohms. This is the amplifier's full rated power (continuous sine wave) with a total harmonic distortion of an amazing 0,5% within 0,5 dB. Teac has no need to rely on misleading, inflated so-called "music power" specifications. The virtually undistored power AE-200 delivers is more than enough to drive any speaker system.

Unique concealed Panel Control. Drop the panel lid and Presto. A complete stereo control is revealed with every relinement to please the most discriminating audiophile. Shut the panel and your Model AE-200 is a masterpiece of modern design. Controls in frequent use are always visible and easily accessible. Infrequently used controls are concealed behind the beautiful Eurasian wood panel.

Phase reverse switch. A very convenient  combination switch for phase checking of multichannel speaker systems by reversing polarity or electrically interchanging the left and right speakers. Also, either channel speaker can be individually switched on.

Balans Check. A very unique circuit utilizing the differential amplifier characteristic. When the balance in output of both L and R channels is perfect, they will be canceled and no sound will be heard from the speaker. A signal source applied in parallel to the input is most convenient at making this check.

Specifications

Rated Power:

50 W + 50 W ±0,5 dB at 0,5% THD 8 Ω load;

60 W + 60 W ±0,5 dB at 0,5% THD 4 Ω load

Harmonic Distortion:  Under 0,1%, 30 watts & 100 mW output

IM Distortion:  Under 0,5% to 40 watts output at 4 Ω load

Power Bandwidth:  20 to 30,000 Hz at 8 Ω load (IHF)

Frequency response:  20 to 80,000 Hz, +0 dB, -1 dB at rated output

Residual System Noise:  Under 0,5 mV

Input Sensitivity/Impedance:  0,7 V/22 k Ω

Signal-to-Noise Ratio (IHF):  100 dB or more

Power Requirements:  115 V AC, 60 Hz

Power Consumption:  150 W max.

Dimensions (W x H x D):  8-1/4" x 5-7/8" x 13"

Weight:  15,4 lbs

Pioneer SE-300

 Pioneer SE-300 High Polymer Stereo Headphones

The operating principle of the E-300 is completely different from that of conventional headphones; a high polymer piezoelectric material is used for the acoustic diaphragms. This has revolutionized the headphones.

 Features:

Distortion is extremely small even for low level sound, because the effective area of the acoustic plate is increased. This result is greatly improved frequency response compared to conventional headphones.

Large input handling capacity allows you to listen to higher level sounds than was ever before possible.

These headphones have higher efficiency than electrostatic and electret headphones; no special output other than the amplifier's headphone jack is necessary for connection

Operation is very stable in environments of different temperature and humidities.

Specifications:

Speakers Unit:  8,5 µ high-plymer piezoelectric diaphragm

Electrostatic Capacity:  0,08 µF

Frequency Response:  20 to 20,000 Hz

SoundPressure level:  100 dB/3V

Maximum Input Power:  30 V (each channel)

Connection Cord and Plug:  2,5 m vinyl cord with 6,3 mm ø 3-conductor plug

Weight:  280 g ( without connection cord)

Pioneer SE-500

 High-Performance High-Polymer stereo headphones for clear sound reproduction and lightweight comfort.

 Success repeats itself in this, the second generation of Pioneer's original high-polymer stereo headphones. The SE-500 are based on the unusual electrophysical effect called piezoelectrics. As the audio signal reaches the ultra-thin, aluminum-coated high-polymer film drivers, they expand and contract accordingly in an ideal "breathing motion" for impressively natural, quite unmechanical audio response. Tonal characteristics are comparable to those of the electrostatic type headphones, yet you need no matching transformer; the SE-500 plug directly into the headphone jack of your amplifier or receiver. Crystal earphones, ceramic cartridges and other low-class audio uses have been found for the piezoelectric effect in the past, but never with the resonance-free, brilliantly simple high fidelity results obtained in these revolutionary piezo-polymer stereo headphones form Pioneer.

 High-Polymer Film Diaphragm

Wide range reproduction from solid lows to transparent highs is assured, thanks to the unique "breathing motion" of the high-polymer film diaphragms in the SE-500. as the effective diaphragm area is wide, amplitude is minimized to further reduce distortion and clarity response.

Lightest headphones

Lightweight, non-bulky headphones like these greatly enhance your music-listening pleasure. These are among the lightest, easiest to use non-isolating stereo headphones sold.

Maximum Sensitivity and Efficiency

The sensitivity, or efficiency of the Pioneer SE-500 is an important advantage over conventional types, comparing favorably with the electrostatic types yet enabling you to power them directly from your receiver or amplifier without need for a matching transformer.

High Endurance for large Input Signals

The SE-500 feature a high endurance to accept large input signals. This means that dynamic sound reproduction on a  par with that heard in a concert hall, is yours for realistic musical reproduction.

Excellent Stability

Changes in temperature and hunidity do not hamper the stanility of the SE-500. You can depend on constant and uniform performance under all conditions and for long hours of use.

Luxury Design

Slim, smart and stylish. The lightweight, open type (on-the-ear) design and duraable materials of the SE-500 contribute significantly to their appeal.

Specifications

Diaphragm Unit:  8,5 µ high-plymer element

Static Capacity:  0,08 µF

Frequency Range:  20 to 20,000 Hz

Sensitivity:  100 dB/3V

Maximum Input Power:  30 V 9each channel)

Connection Cord and Plug:  meshwork cable (3 m) with 6,3 mm ø 3-P plug

Weight:  370 g (13 oz) with connection cord

Sanyo DCA 1001

 A dynamic pre-main amplifier with quality features and enough power to drive any high quality component sound system.

Handsomely styled unit with jumbo-size calibrated volume control knob with pre-set clik stop action.

45 watts per channel RMS minimum continuous power with maximum total harmonic distortion of 0,5% at 8 ohms.

Detent bass and treble controls for precision setting.

Tone defeat sitch for instantaneous flat response

Balance  control

Off/A/B + B speaker switching

Low filter and loudness control

Multi-tape recording playback control featuring copy 1-2/play 1/source/play 2/copy 2-1

Phono, Tuber, Aux, Tape 1 and 2 input and outputs

Separate switched and unswitched AC outlets

Amplifier comes complete with audio cables

Handsomely styled all metal cabinet with simulated walnut grain side panels

Specifications

Power-amp Section

Minimum Continuous Power:  45 watts per channel (20-20,000 Hz, THD 0,5%, 8 Ω)

Frequency response:  15 - 15,000 Hz

Tone Controls:

Bass :  ±12 dB at 50 Hz

Treble :  ±3 dB at 20 kHz

Loudness Control:  +8 dB at 100 Hz ;  +3 dB at 10 kHz

Input Sensitivity/Impedance:

Phono :  2,5 mV/50 k Ω

Tuner :  140 mV/50 k Ω

Aux :  140 mV/50 k Ω

Tape :  130 mV/50 k Ω

Tape rec. Output level:  140 mV

Damping Factor:  40 at 8 Ω, 1 kHz

Semiconductors:  4 IC,  7 Transistors,  22 Diodes

General Section

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

Power Consumption:  88 watts

Dimensions (W x H x D):  15-3/4" x 5-5/32" x 13-3/4")

Weight:  21 lbs 8 oz.

Sanyo FMT 1001K

 FMT 1001K Massive High-styled AM/FM Stereo Component Tuner with Large, Extra-Wide Dial Scale

Perfect mate for home sound system providing high-quality, pure sound FM reception. This unit is a must for any sophisticated component ensemble providing rich, true high fidelity sound for your listening or recording enjoyment. A quick lokk at the features and specifications of this unit assures you of the finest AM broadcast and pure FM stereo reception.

Features:

Extra wide tuning dial scale for sensitive tuning

High blend On/Off switching

Heavy duty gyro-balanced flywhell

AM sinal strength and FM center tuning meter

AM/Auto FM Mono/Stereo selector

Left and right output jacks

Stereo indicator light

FM 75 Ω and 300 Ω antenna terminals

AM external antenna terminal and built-in ferrite antenna

FM indoor antenna and audio cables are provided

Deluxe, high-styled metal cabinet

Specifications

FM Section

Tuning Frequency Range:  88 to 108 MHz

Usuable Sensitivity (IHF):  2,0 µV

IF Rejection:  90 dB

Image Rejection:  60 dB

AM Suppression:  55 dB

Capture Ratio:  1,0 dB

Selectivity (IHF):  60 dB

Signal-to-Noise Ratio:  70 dB

Harmonic Distortion [Mono/Stereo]:  0,5% / 0,2%

Stereo Separation (at 1 kHz):  40 dB

AM Section

Tuning Frequency Range:  535 to 1600 kHz

Sensitivity:  25 µV

Image Rejection:  40 dB

IF rejection:  40 dB

Selectivity:  30 dB

Signal-to-Noise Ratio:  50 dB

Harmonic Distortion:  0,4%

General Section

Output level/Impedance:  500 mV/3 k Ω

Power Source:  100-120/220-240 V, 50/60 Hz

Power Consumption:  9 W

Dimensions (W x H x D):  15-3/4" x 5-5/32" x 14"

Weight:  13 lbs 8 oz

Sherwood S-8800a

 First of a new breed  - from Sherwood.

This is what high performance is all about. A bold and beautiful new FM Stereo receiver bred to leave the others behind. 160 crisp, cleanwatts-power in reserve. Up-front, ultra-now circuitry featuring Field-Effect Transistors and microcircuitry. Front-panel, push-button command of main, remot, or mono extension speakers and loudness contour. Sherwood high-fidelity - where the action is - long on reliability with a three-year warranty.

 Sherwood presents its latest version of the world-famed S-8800 series All-Silicon solid-state receivers. Six push buttons control the choice of main or remote stereo speakers (or both simultaneously), loudness contour, stereo/mono selection, tape monitoring, and high filter.

Unique with this receiver are two front-panel jacks, one to operate stereo headphones and another to playback or record into a tape recorder (or cassette recorder). The tape jack can also be used in conjunction with the S-8800a rear-panel jacks for dubbing from one recorder to another or for simultaneous recording on 2 recorders.

 New features such as these are backed up by the latest engineering advances such as Microcircuitry in IF and Synchro-phase FM limiter/detector circuits (providing -60 dB AnM rejection and 2.0 dB capture ratio). Also featured are Field Effect transistors in RF and Mixer stages (enabling -95 dB cross-modulation rejection).

A power reserve of 160 watts (4 Ω music power) is available to operate 2 sets of stereo speaker outputs and also a mono speaker output on the rear panel. Superlative sound reproduction is provided by the Sherwood S-8800a FM rated at less than 0,15% distortion and stereo amplifier rated at 0,1% at normal listening levels.

All of Sherwood's solid-state receivers, which have long been acclaimed throughout the world for their reliability, now offer a full 3-year warranty on all parts.

Specifications

Amplifier Section

Power Output:

At 4 Ω : Music power 160 watts total continuous power 50 watts x 2

At 8 Ω : Music power 120 watts total continuous power 40 watts z 2

Harmonic Distortion :

0,35% at 8 Ω rated output

0,10% at 2 watts & 5 watts

Intermodulation Distortion:

0,6% at 8 Ω rated output

0,15% at 2 watts & 5 watts

Speaker Output Impedance (Stereo & Mono):  4 Ω, 8 Ω,   or 16 Ω

Stereo Headphone Output:  high or low impedance

Stereo Recording Output:  500 mV/2 k Ω

Power Bandwidth:  12 - 30,000 Hz at 1% Distortion

Frequency Response:

Phono :  RIAA standard, ±1,5 dB

Aux : 20 - 20,000 Hz, ±1 dB

Damping Factor:  40 : 1 at 8 Ω

Controls:

Bass : ±15 dB at 40 Hz

Treble : ±15 dB at 15 kHz

High Filter:  -23 dB at 20 kHz;  -3 dB at 5 kHz

Input Sensitivity (for rated output):

Phono :  1,6 mV, variable to 50 mV

Aux :  200 mV

Tape Monitor : 200 mV

Input Capability (for 1% dist.):

Phono :  250 mV

Aux :  2,5 V

Hum and Noise (IHF):

Phono : -65 dB

Aux. :  -80 dB

Vol. Control Min. : -90 dB

Crosstalk:  -40 dB at 1 kHz

Special Features:

Mono speaker output; Transistorized instant overload protection; Tone control flat response ±5 degrees; Front-panel tape dubbing jack.

Tuner Section

Fm Sensitivity (IHF):  1,8 µV (-30 dB noise & dist.)

Signal-to-Noise Ratio:  -70 dB

Capture Ratio:  2,0 dB

Suppression Of AM:  -50 dB

Tuning Range:  87,5 to 108,5 kHz

Distortion:  0,15% at 100% mod.

Crossmodulation Rejection:  -95 dB

Stability:  ±10 kHz (±.01%)

Image rejection:  -80 dB

IF Rejection:  -90 dB

Alternate-Channel Selectivity:  55 dB

Stereo Separation:  40 dB at 1 kHz

Freqquency response:

Mono : 20 - 20,000 Hz, ±1 dB

Stere0 : 20 - 15,000 Hz, ±1 dB

Antenna: 300 Ω balanced, or 75 Ω coax.

Special Features:

FET RF and mixer stage,

Microcircuit IF and Synchrophase Limiter,

Flywheel-assisted vevlet tuning,

Dial scale 7 ¾ inches long, 0,2 MHz calibrations,

Interchannel hush with front-panel level adjust,

Zero-center tuning meter,

Noise-protected automatic FM stereo/mono switching at 8 µV.

General

Power Requirements:  115 - 125 V, 60 Hz, 30 or 160 watts fused.

AC Outlets: 300 W switched / 300 W unswitched

Dimensions (W x H x D):  16 ¼ x 4 ¼ x 14 inches

Weight:  27 lbs (shipping)

Optional Accessories:

Oiled Walnut Cabinet (W8):  17 x 5 x 14 inches

Walnut-grain Leatherette Case (Type D):  16 ¼ x 4 ¼ x 14 inches

Heathkit AR-1500A

 We've improved upon the Classic receiyer.

The tradition of heathkit stereo receiver superiority began in 1967 with the heathkit AR-15. then in 1971 came the Ar-1500. now, it's the AR-1500A, the world's classic receiver, improved once again. Design advancements include.

Phase lock Loop (PLL) multiplex demodulator with only one simple adjustment, your assurance of maximum separation, droft-free performance and long-term stability. Simplification of the AGC circuit resulting in significant improvements in AM performance. Improved output protection for better drive capability over taday's wider range of speaker impedances.

Now Easier To Build

In redesigning the AR-1500A, special care was given to making the kit even easier to build than before. A separate check-out meter is used to check out each step as assembly progresses. Factory-installed cable connectors are another new kitbuilding aid.

 Still tops in performance.

The precedent-setting performance specifications of the AR-1500 have, of course, been retained. Conservatively rated, the Ar-1500A puts out 180 watts, 90 per channel, into 8 ohms, with both channels driven, with less than 0,25% harmonic distortion. Two computer designed five pole LC filters and the 4-gang, front end combine for an FM selectivity beter than 90 dB with 1,8 µV sensitivity. And here are some things the specs won't show you. There are outputs for two separate speaker systems, two sets of headphones, preamp output, and monitoring of FM with an ascilloscope such as the Heathkit Audio-Scope. Standard inputs - all with individual level controls. Electronically monitord amplifier overload circuitry.

Specifications

Tuner FM Section

Monophonic:

Sensitivity:  1,8 µV

Selectivity:  90 dB

Image rejection:  100 dB

IF Rejection:  100 dB

Capture ratio:  1,5 dB

Harmonic Distortion: 0,5% or less

Intermodulation Distortion:  0,1% or less

Stereophonic:

Channel Separation:  40 dB or greater at midfrequencies; 35 dB at 50 Hz; 25 dB at 10 kHz; 20 dB at 15 kHz

Tuner AM Section

Sensitivity:  50 µV with external input; 300 µV per meter with radiated input

Selectivity:  20 dB at 10 kHz;60 dB at 20 kHz

Image Rejection:  70 dB at 600 kHz; 50 dB at 1400 kHz

IF Rejection:  70 dB at 1000 kHz

Amplifier Section

Dynamic Power Output per Channel:

Music Power Rating:  90 watts (8 Ω load);  1200 watts (4 Ω load);  50 watts (16 Ω load)

Continuous power Output per Channel:  60  watts ( 8 Ω load);  100 watts (4 Ω load); 40 watts (16 Ω load)

Power Bandwidth (for constant .25% THD):  less than 8 Hz to greater than 30 kHz

Frequency Response (1 watt level):  9 Hz to 80 kHz,  -1 dB

Harmonic Distortion:  less than 0,25% from 20 Hz to 20 kHz at 60 watts output

Intermodulation Distortion:  less than 0,1% with 60 watts output

Damping Factor:  Greater than 60

Channel Separation:  55 dB (Phono)

Output Impedance (each channel):  4 Ω through 16 Ω

Dimensions (W x H x D):  18-1/2" x 5-1/8" x 13-7/8"

Weight (less cabinet):  53 lbs

Technics RS-630

 The art of recording now takes another step forward.

Cassette tape decks have really come into a world of their own, thanks to the many technical breakthroughs accomplished by some very ingenious engineers. The Dolby noise reduction, vastly improved tape heads, peak level check meters, chromium dioxide tape cassettes and stabilized tape transport are just some of the many reasons for the cassette deck's rise into the ranks of top quality high fidelity systems. This should be enough to satisfy even the most professional type of audio fan, but Technics engineers weren't happy. Their constant striving for even better and better systems has produced a real classic in cassette tape decks - the RS-630 where all controls and tape loading are operated from the Front. With the RS-630, you not only have all that's best in the latest cassette deck technology, you have it all there on the front panel, bringing it right into line with your other Hi-Fi components.

 Separate bias and equalization selectors for optimum recording with any type of tape.

The RS-630 can make full use of the quality potential of any kind of cassette tape - be it normal, LH, chrome or the new ferric-plus-chrome types. With its separate bias current and equalization selector switches, optimum conditions can be estabilished for any tape, to give you recordings of even,balanced frequency response, excellent dynamic range and finest signal-to-noise ratio. It's you who chooses the tape - not the machine.

Outstanding peak check meters.

All music contains short sharp signal peaks which are several times more intense than the average signal level. These peaks may well overreach the tape's ability to accommodate them, resulting in distorsion. To avoid this,the deck's recording level may be set to a lower position, but if set too low, tape noise may become noticeable during quieter passages. Accurate adjustment of recording level is then very important, and this is where the unique peak check meters play a major role. These two large, easy to read meters can give both "conventional" level readings (which are more or less averaged readings), and peak check readings where they respond to even the shapest signal peaks.  This will go a long way in making genuinely high quality tape recordings.

 The Dolby noise reduction

The Dolby noise reduction system has greatly improved the quality of cassette tapes by removing much of the background noise. Technics was very quick to adopt the Dolby system as  a standard feature for the discriminating audio fan. The Dolby system removes the hiss-like tape noise, particularly noticeable during the quieter lulls, by boosting high notes duriug recording. In playback, the Dolby circuit reduces the boosted notes back to their previous levels, but at the same time reduces the tape hiss to a much lower, almost inaudible level. It's no wonder that the Dolby system has become a standard feature for the keen audio enthusiasts.

HPF head with extremely long service life.

One of the major drawbacks in any tape recording has been the constant wear and tear on tape heads. But now Technics engineers have also overcome this problem with their extremely long life HPF heads which withstand even the longest wear and tear. They are guaranteed to last at least for 10 years, far beyond the best performance of normal heads.

Output level control

This control is essential if you want to adjust the cassette deck's output to the same level as your tuner and turntable, etc. You will need no further adjustment of your amplifier volume control, and will be free to switch from component to component all at athe same volume.

 Front loading makes cassette decks a full member of the component family

Now you can stack your cassette tape deck righ along, or right on top, pf your other components. Neat and tidy, and space-saving, yet still with the same high quality precision performance as before. Note the flood-lit compartment with its sliding door and easily accessible tape heads for easy cleaning and demagnetization.

Plus a host of other value features.

Auto-stop at end of tape prevents undue strain.

Lockable pause button for quick interruptions of recording or play.

Big, handy play and stop buttons.

Tape transport clearly visible, thanks to illuminated cassette compartment with two mirrors.

Connectors include; mic inputs, line inputs, line outputs, DIN-type Rec/Pb connector, stereo headphones jack.

Specifications

Track System: 4-track, 2-channel stereo recording and playback

Motor:  1 Electronic speed control motor

Heads:

1 x HPF head for rec/playback

1 x Ferrite head for erasing

Tape Speed:  4,8 cm/s (1-7/8 ips)

Wow and Flutter:  0,09% (WRMS), ±0,20% (DIN)

Frequency Response:

CrO₂ Tape :  20 - 16,000 Hz (30 - 14,000 Hz DIN)

Normal tape : 20 -14,000 Hz (30 - 13,000 Hz DIN)

Signal-to-Noise ratio:

Dolby NR in :  60 dB (above 5 kHz)

Dolby NR out :  50 dB (signal level 250 nWb/m)

Fast Forward /Rewind Time:  Approx. 90 sec. With C-60 cassette tape.

Inputs Sensitivity/Impedance:

Mic : 0,25 mV/600 Ω -20 k Ω

Line : 60 mV/47 k Ω

Outputs level/Impedance:

Line : 0,42 V/ 50 k Ω over

Headphone : 60 mV/8 Ω

Rec/PB Connection:  5 P DIN type

Power requirements:  90-109/110-125/200-219/220-250 V, 50/60 Hz AC

Power Consumption:  10 W

Dimensions (W x H x D):  410 x 142 x 321 mm (16-1/8" x 5-5/8" x 12-5/8")

Weight:  7 kg (15-3/8 lbs)

Technics RS-M63

 The RS-M63's 3-head configuration lets you do what most other comparably priced decks don't; monitor your recordings while you're recording. And, since our separate HPF record and playback heads are precisely gapped and enclosed in a single housing, you won't get azimuth error. What you will get is an extremely wide frequency response with CrO₂ tape and an incredibly high response with metal tape.

 As good as that sounds, double Dolby will make it sound even better, because there are separate Dolby circuits for recording and playback. So you can monitor your tapes with the full effects of Dolby Noise Reduction. That means a lot when it comes to accurate recordings.

So do the RS-M63's fluorescent (FL) bar graph meters. Especially when it comes to dynamic range. Because with their device attack time of just 5-millionths of a second, they can respond to the most sudden musical transients.

To help you make the most of all this performance, the RS-M63 has a fine bias adjustment, so you can get the most out of all kinds of tape. And you'll spend more time listening to music and less time searching for it, because we include the memory features you need. Like auto-rewind, auto play and rewind auto play.

Specifications

Track System:  4-track, 2-channel stereo recording and playback

Motor:  Electronically controlled DC motor

Heads:  3-head system

2 x HPF heads for record/playback (combination type)

1 x Sendust/Ferrite double-gap head for erasure

Tape Speed:  4,8 cm/s

Wow and Flutter:  0,05% (WRMS)  ±0,14% (DIN)

Frequency Response:

Metal tape : 20 - 20,000 Hz (30 - 18,000 Hz  DIN)

CrO₂/Fe-Cr tape :  20 -18,000 Hz (30 - 18,000 Hz  DIN)

Normal tape :  20 - 18,000 Hz (30 - 17,000 Hz  DIN)

Signal-to-Noise Ratio [Dolby NR in/Dolby NR out]:  67 dB (above 5 kHz) / 57 dB

Fast Forward/Rewind Time:  approx. 90 sec. with C-60 cassette tape

Inputs Sensitivity/Impedance:

Mic : 0,25 mV/10 k Ω

Line : 60 mV/56 k Ω

Output Level/Impedance:

Line : 650 mV/2,7 k Ω or less (load impedance 22 k Ω over)

Headphone : 100 mV/8 Ω

Rec /Pb DIN Connection:  5 P DIN type

Input Sensitivity/Impedance : 0,25 mV/8,2 k Ω

Output level/Impedance : 650 mV/2,8 k Ω

Bias Frequency:  85 kHz

Power Requirement:  AC, 110/125/220/240 V, 50/60 Hz

Power Consumption:  14 W

Dimensions (W x H x D):  430 x 142x 270 mm

Weight:  6,3 kg

Acoustic Research AR-2x

 The AR-2x are lower cost versions of our basic acoustic suspension design. AR-2x has a 10-inch bass speaker, mounted in an acoustically sealed enclosure filled with glass wool, and in addition , a small, high-dispersion cone speaker. Separate controls on the back of the AR-2x  permit independent adjustment of the level of the midrange / high frequency speakers. The performance standard in the design of the AR-2x was the same as that for the AR-3a; natural reproduction of music without exaggeration or artificiality of sound. But where quality in the case of the AR-3a hes been limited only by the state of the art. And our own engineering skill, here price is also a consideration.

 "Clean, balanced and wide range …  from under 50 cycles to beyond audibility this speaker will reproduce what is fed to it with clarity and with honesty …  its strengths lie in an unusual smoothness and lack of any harshness whatsoever."

American Record Guide

"The  bass line is, as we have come to expect from AR, exemplary; well-defined and clean. The highs are quite open … strong fundamental bass to just below 40 Hz … response upward from here is uniform, smooth and remarkably well dispersed all about the speaker".

High Fidelity

Specifications  AR-2x 

Sensitivity:  91 dB

Response:  42 Hz to 20,000 Hz (± 2 dB)

Recommended Amplifier Power:  20 watts RMS,

Minimum impedance:  8 ohms

Woofer resonance:

Free air  :  26 Hz

In enclosure :  56 Hz

Speaker Complement:

Woofer : 10" acoustic suspension

Mid/High-frequency : 2 ½"  cone 

Crossover Frequencies:  1200 Hz

Controls:  high-frequency adjustment

Volume of enclosure:  38.2 litres (1.35 cu ft)

Dimensions:  13 ½" x 24" x 11 ½"

Weight:  15 kg (33 lbs)

Finish:  Glossy or oiled walnut, cherry, oiled teak, mahogany, birch and unfinished pine.

Acoustic Research AR-2ax

 The AR-2ax are lower cost versions of our basic acoustic suspension design. Each has a 10-inch bass speaker, mounted in an acoustically sealed enclosure filled with glass wool, and in addition , a small, high-dispersion cone speaker. In the AR-2ax there is a third speaker, a ¾-inch hemisphere for very high frequencies, the same unit as is used for this purpose in the AR-3a. Separate controls on the back of the AR-2ax permit independent adjustment of the level of the midrange and high frequency speakers.

 The performance standard in the design of the AR-2ax was the same as that for the AR-3a; natural reproduction of music without exaggeration or artificiality of sound. But where quality in the case of the AR-3a hes been limited only by the state of the art.  And our own engineering skill, here price is also a consideration.

"… the low-frequency speaker has exceptionally low bass distortion … the tone burst response of the AR-2ax gave further evidence of its excellent quality … comes remarkably close to matching the AR-3."

HiFi Stereo Review

Specifications  AR-2ax

Sensitivity:  91,5 dB

Response:  42 Hz to 20,000 Hz (± 2 dB)

Recommended Amplifier Power:  20 watts RMS,

Minimum impedance:  8 ohms

Woofer resonance:

Free air  :  26 Hz

In enclosure :  56 Hz

Speaker Complement:

Woofer : 10" acoustic suspension

Midrange : 3 ½" cone

Tweeter : ¾" hemispherical dome

Crossover Frequencies:  1400 Hz/5000 Hz

Controls:  Independent midrange and high-frequency adjustments

Volume of enclosure:  38.2 litres (1.35 cu ft)

Dimensions:  13 ½" x 24" x 11 ½"

Weight:  16,6 kg (36,5 lbs)

Finish:  Glossy or oiled walnut, cherry, oiled teak, mahogany, birch and unfinished pine.