Technics RS-M236X deck

Many stereo cassette decks are equipped with a noise reduction system. But not many are equipped with three. The Technics RS-M236X features: dbx, Dolby C and Dolby B noise reduction circuitry, offering triple insurance of deck/tape compatibility.

dbx, Dolby C, and Dolby B

The RS-M236X's three noise reduction systems are arranged in a neat push-button format for maximum convenience, dbx is the most effective of the trhee, eliminating background tape hiss, and also giving the tape the ability to reproduce up to a 110 dB difference  in volume levels (the dynamic range of a live performance) dbx reduces noise by at least 30 dB, below audible levels, and it increases headroom by about 10 dB, so the tape can reproduce loud music signals without distorting them. The RS-M236X is also equipped with a dbx disc decoder, so you can experience the same live-performance realism from the growing number of dbx-encoded LPs as you do from dbx-encoded tapes.

Dolby B, the noise reduction system used in many cassette decks and prerecorded tapes, and Dolby C, an improved version of Dolby B, both reduce tape noise, especially in the high frequency range where tape hiss is most noticeable.

Microprocessor feather-Touch Controls with Cue and Review.

Microprocessor operation gives the feather-touch control panel an impressive array of conveniences. You can switch from fast forward or rewind directly to play, without having to touch the "stop" key. And the deck also includes cue&review functions, so you can locate specific parts of songs by monitoring the sound during rewind and fast forward. The controls are also color-coded for extra convenience.

Wide-Range 2-Color FL Meters

This advanced electronic metering system uses a flourescent display to show both instantaneous signal input level and the highest peak reached in each 2-second period. The meter's range extends from -40 dB to +18 dB to cover dbx 's wide dynamic range.

Automatic Tape Selector

Forgetting to set a deck's tape selector can cause distortion, noise, and unnatural tonal balance - in short, a ruined recording. But tape type selection is automatic in the RS-M236X, which detects the ID recesses on the back of the cassette and sets the correct bias and equalization for normal, CrO₂ and metal tapes. The automatic tape selector's setting is indicated by colored LEDs.

Slider Controls for Input Level and Balance

The RS-M236X's dual slider system provides optimum precision in setting recording levels. For most recording, the master input level slider suffices, adjusting both the left and right channels together. For such demanding situations as live recording, the balance slider adjusts left/right channel balance.

Other Features:

2-motor drive

Metal-compatible MX head

Automatic mic/line input selector

Timer record/playback capability

Oil-damped cassette well door, removable for easy maintenance.

Specifications

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

Tape Speed:  4,8 cm/s

Wow and Flutter:  0,048% (WRMS)

Frequency Response

Metal Tape :  20 - 20,000 Hz (50 - 17,000 Hz ±3 dB)

CrO₂ Tape :  20 - 19,000 Hz (50 - 16,000 Hz ±3 dB)

Normal Tape :  20 - 18,000 Hz (50 - 15,000 Hz ±3 dB)

Dynamic range:  110 dB ( at 1 kHz, CrO₂) with dbx in

Max.input Level Improvement:  10 dB or more with dbx in (at 1 kHz)

Signal-to-Noise Ratio :

dbx IN :  92 dB

Dolby C NR in :  75 dB (CCIR)

Dolby B NR in :  67 dB (CCIR)

NR out :  57 dB

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

Input Sensitivity/Impedance:

Mic :  0,25 mV / 400 Ω  - 10 k Ω

Line :  60 mV / 47 k Ω

Output Level/Impedance:

Line :  400 mV/1,5 k Ω  or less

Headphones :  80 mV/ 8 Ω  - 600 Ω

Bias Frequency:  80 kHz

Motor:  DC servo motor, DC motor

Heads:  2 head system

Record/Playback : MX head

Erasure :  Double gap ferrite

Power Requirement:  AC 110 - 120 V, 220 - 240 V 50/60 Hz

Power Consumption:  18 W

Dimensions (W x H x D):  430 x 98 x 273 mm

Weight:  5,0 kg (11 lbs 3 oz)

I like

Technics RS-M231X deck

Technics presents a stereo cassette deck with a rare combination: 3 major noise reduction systems, and a low price. In addition to the RS-M231X's Dolby B and C noise reduction circuitry is dbx, which doesn't just reduce background tape noise but eliminates it. We've also furnished the RS-M231X with soft-touch transport keys, a metal compatible MX head, and convenient slider controls for input level and balance adjustment.

Dolby B, Dolby C, and dbx

The most effective of the deck's noise reduction systems is dbx, which eliminates tape noise and gives your tape the ability to reproduce up to a 110 dB difference in volume levels (or dynamic range) of a live performance, dbx reduces noise by at least 30 dB, pushing tape hiss below audibility, and increases headroom by about 10 dB so the tape can accept loud music signals without distortion them. The result is concert-like realism.

The RS-M231X is also equipped with a dbx disc decoder, so you can experience the same live-performance excitement from the ever-increasing number of dbx-encoded Lps as you do from dbx-encoded tapes.

Dolby B, the noise reduction system used in many cassette decks and prerecorded tapes, and Dolby C, an improved version of Dolby B, both reduce tape noise, especially in the high frequency range, where tape hiss is most noticeable.

Soft-Touch Controls

The soft-touch controls, which require only a light touch to operate, boast an impressive array of convenience features. Machanical logic allows you to switch from fast forward or rewind directly to play, without having to touch the "stop" key. For recording, just touch the "record" key instead of "record" and "play". And rewind auto-play begins playback automatically after the tape rewinds to the beginning. The deck also includes cue & review functions, and timer record/playback capability.

Input Level and Balance Slider Controls

The deck's dual slider system provides optimum precision in setting recording levels. For most recording, the master input level slider suffices, adjusting both the left and right channels together. For such demanding situations as live recording, where microphones are used, the balance slider adjust left/right chnnel balance.

Metal Compatible MX Head

Specially developed for metal tape compatibility, technics' MX head handles metal tape's high signal and bias level requirements and provides smooth frequency response and wide dynamic range. Of course, this improves the performance of normal and CrO₂ tapes as well.

Other Features:

DC servo motor

Automatic mic/line input selector

Large illuminated level meters

Timer record/playback capability

Oil-damped cassette well door, removable for easy maintenance.

 Specifications

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

Tape Speed:  4,8 cm/s

Wow and Flutter:  0,048% (WRMS)

Frequency Response

Metal Tape :  20 - 19,000 Hz (50 - 17,000 Hz ±3 dB)

CrO₂ Tape :  20 - 18,000 Hz (50 - 16,000 Hz ±3 dB)

Normal Tape :  20 - 17,000 Hz (50 - 15,000 Hz ±3 dB)

Dynamic range:  110 dB ( at 1 kHz, CrO₂) with dbx in

Max.input Level Improvement:  10 dB or more with dbx in (at 1 kHz)

Signal-to-Noise Ratio :

dbx IN :  92 dB

Dolby C NR in :  75 dB (CCIR)

Dolby B NR in :  67 dB (CCIR)

NR out :  57 dB

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

Input Sensitivity/Impedance:

Mic :  0,25 mV / 400 Ω  - 10 k Ω

Line :  60 mV / 47 k Ω

Output Level/Impedance:

Line :  400 mV/1,5 k Ω  or less

Headphones :  80 mV/ 8 Ω  - 600 Ω

Bias Frequency:  80 khx

Motor:  DC servo motor

Heads:  2 head system

Record/Playback : MX head

Erasure :  Double gap ferrite

Power Requirement:  AC 110 - 120 V, 220 - 240 V 50/60 Hz

Power Consumption:  18 W

Dimensions (W x H x D):  430 x 109 x 235 mm

Weight:  4,4 kg (9 lbs 11 oz)

I like

Technics SL-1950 turntable

Technics SL-1950

Introducing Technics SL-1950. the changer that outperforms all of our competitors' changers and many of their high-prieced manuals. Because it's the changer with the Technics direct-drive system. The system radio stations use and discos abuse.

The SL-1950 gives you performance comparable to our direct-drive manuals. Like inaudible wow and flutter at 0,03% WRMS. Undetectable rumble at -70 dB (DIN B) and a 321 element one-chip IC that autamatically stabilizes turntable speed.

To take advantage of all that accuracy, the SL-1950 features a sensitive, statically balanced S-shaped tonearm.

But even though the SL-1950 performs like a manual, it's still a changer. It handles up  to 6 records automatically. And has a memory system that allows repeated or continuous paly in both the single-play and changer modes.

And that's not all. The SL-1950 also has oil-damped cueing. Anti-skating control. Illuminated stroboscope . Pitch controls variable by 10%. Feedback-insulated legs. A hinged, detachable dust cover. And an anti-resonant integral base.

The SL-1950 - The changer you should look at even if you're looking for a manual.

High peformance automatic turntable system

The "mem0-gram" function unique to technics which enables you to enjoy manual play, auto-start, auto-return, auto-stop, repeated performance from 1 to 6 times and continuously performance, and , in addition, multiple play, capable of playing 1 to 6 records continuously. All these features will make your "audio life" happier.

Integral rotor-platter structire

First to introduce the direct-drive system for turntables, Technics has now taken this remarkable advance one step further with the development of the integral Rotor-Platter structure. This latest technics breakthrough combines the turntable platter and the rotor of the motor in one piece, reducing the number of moving parts to just one, to further simplfy turntable construction and at the same time raise performance standards.  Simplified design and construction make possible more precise and accurate speed, greater reliability, and more attractive styling; and most important, measurable performance that is unegualled among turntables with other drive systems.

Dependable one chip IC.

The direct-drive motor of the SL-1950 is controlled by a "one-chip" IC which performs the functions of up to 321 individual transistor, diode and resistor elements. With this IC brain, the motor control circuit supplies precisely the correct amount of drive current to the motor to maintain the proper speed under all conditions.

This "one-chip" control system contains a number of refinements which assure unvarying rotational speed,, free from "tag" in corrective response. Rotation stability is unaffected by changes in temperature or long playing times, and the IC permits quick response to sudden transient in load.

Hi-fidelity performance with rumble (Signal-to-Noise ratio) of -70 db  (DIN45539B), wow and flutter of 0,03% (WRMS)

The ultra-low speed brushless Dc motor employed in this unit has an extremely low power consumption of about 0,1W. The high performance of the Direct Drive motor is due to the newly developed heavy weignt base and to the utilization of the one chip IC of the B.FG (back Electromotive Force Frequency Generator}  system.

Specifications

Type:  Direct-drive Automatic Turntable System

Drive Method:  direct drive

Motor:  B.FG servo DC motor

Turntable Platter:  aluminum die-cast 310 mm (12-1/8")

Turntable Speeds:  33-1/3 and 45 rpm

Pitch controls:  10% adjustment range

Wow and Flutter:  0,03% WRMS (JIS C5521) ±0,042%  weighted zero to peak (DIN 45507)

Rumble:  -70 dB (DIN 45539B)

Tonearm Type:  Universal tubular arm, static-balanced type

Effective length:  230 mm (9-1/16")

Overhang:  15 mm (19/32")

Friction: within 7 mg (horizontaly and vertically)

Tracking Error Angle: 

Within +3° (at the point of 145 mm from the center)

Within +1°(at the point of 55 mm from the center)

Offset Angle:  21,5°

Adjustable Stylus Pressure Range:  0 to 3 g (stylus pressure direct reading type)

Cartridge Weight Range:  5,5 to 9,5 g

Headshell Weight:  9,5 g

Power Supply:  AC 120 240V, 50/60 Hz

Power Consumption:  6,5 W

Dimensions (W x H x D):  430 x 175 x 352 mm (16-15/16" x 6-15/16" x 13-7/8")

Weight:  7,5 kg (16,5 lbs)

I like

Yamaha TC-920B deck

TC-920B - matching the industry's finest separates in appearance as well as performance.

For unparalleled performance, the TC-920B starts with the heads. Yamaha's unique pure Plasma process results in Sendust heads of unparalleled purity, resulting in high permeability of the core for better sensitivity and playback efficiency, excellent Signal-to-Noise ratio, and greatly reduced tape/head wear.

The TC-920B has a vast array of audiophile features. Like the unique Focus switch. In the "Soft" position, you will attain a more relaxing, mellow quality to the overall listening effect. In the "Sharp" position, you get a more crisply punctuated high frequency sound quality. There's also a fine bias adjust control to match the deck's characteristics to those of the actual tape in use.

A switchable subsonic filter cuts out subsonic interference due to warped records, line hum , etc. , and also safeguards your speakers during playback without altering sound quality. The bar-graph peak level meters have a fast/slow switch to adjust the recovery time of the meters for maximum control over the material you are recording.

The 920B's sleek black cabinetry enhances the high-performance look of this studio quality deck. For maximum convenience an ingenious hinged panel conceals the less often used controls. Everything was done with striking esthetics and total performance in mind.

The TC-920B will bring the competition to its knees, and will bring you to your feet, cheering.

Specifications

Type:  4-track, 2-channel stereo cassette deck

Tape Speed:  4,8 cm/sec

Motor:  F.G. servo motor

Wow and Flutter:  less than 0,03% (WRMS)

Fast Forward/Rewind Time:  within 75 seconds with C-60 tape

Recording /Playback Frequency Response:

LH tape :  30 - 16,000 Hz (±3 dB)

CrO₂ Tape :  30 - 18,000 Hz (±3 dB)

Total Harmonic Distortion (1 kHz, 160 nwb/m);

LH Tape :  less than 1,0%

CrO₂ Tape :  less than 1,6%

Signal-to-Noise ratio:  better than  60 dB (CrO₂, NR off); better than 52 dB (CrO₂, DIN, 333 Hz, 3%T.H.D., NR Off)

Dolby NR Effect:  better than 9 dB

Channel Separation:  more than 30 dB (at 1 kHz)

Bias Frequency:  105 kHz

Input Sensitivity/Impedance

Mic :  0,3 mV/5 k Ω

Line :  60 mV/50 k Ω

Output Level/Impedance:

Line :  340 mV9reference level, playback volume at max)

Phones :  1 mW/8 Ω, 4 mW/150 Ω

Semiconductors:  67 Transitors; 45 Diodes; 9 IC's, 2 FET

Power Supplies:  110 - 130 V / 220 - 240 V AC 50/60 Hz

Power Consumption:  14 W

Dimensions (W x H x D):  435 x 140 x 286 mm (17-1/8" x 5-1/2" x 11-1/4")

Weight:  9 kg  (19 lbs 13 oz)

I like

Yamaha TC-720 deck

TC-720 - the 3-head deck for the creative recordist

If you like to get involved with your tape recording, this is the deck for you. The bias rotary control and built-in pink noise generator allow you to fine-adjust the deck's high frequency response to best suit the particular tape you are using. The Rec Level ADJ controls and Rec Cal switch allow you to further adjust the recording sensitivity for proper Dolby NR tracking, resulting in very high Signal-to-Noise ratio and exceptionally clean sound. The TC-720 also has a unique built-in "real time" echo facility. You can use this to add new dimensions of studio realism to tapes recorded for playback in both your car and your home. All these front panel features (and more) are backed by reliable, advanced electronics. The Closed-Loop Dual Capstan Drive keeps the tape at an ideal tension for smooth head contact. An advanced Frequency generator servomotor transports the tape at a constant, accurate speed with very high torque. High-performance, low-noise amplifying circuits are used for the mic and line inputs. All this superior performance is wrapped in a beautiful simulated ebony cabinet.

Specifications

Type:  4-track, 2-channel stereo cassette deck

Tape Speed:  4,8 cm/sec

Motor:  F.G. servo motor

Wow and Flutter:  less than 0,06% (WRMS); 0,2% (DIN, 45 500)

Fast Forward/Rewind Time:  within 90 seconds with C-60 tape

Recording /Playback Frequency Response:

LH tape :  30 to 15,000 Hz (40 - 13,000 Hz ±3 dB)

CrO₂ Tape :  30 to 17,000 Hz (40 - 15,000 Hz ±3 dB)

Total Harmonic Distortion;

LH Tape :  less than 1,5%

CrO₂ Tape :  less than 2,0%

Signal-to-Noise ratio:  . 57 dB (JIS)

Dolby NR Effect:  9 dB

Channel Separation:  better than 30 dB (at 1 kHz)

Bias Frequency:  105 kHz

Bias Selector:  LH, CrO₂

Equalizer Selector: 

LH Tape :  120 µSec +3180 µSec

CrO₂ tape :  70 µSec + 3180 µSec

Input Sensitivity/Impedance

Mic :  0,3 mV/5 k Ω

Line :  50 mV/50 k Ω

Output Level/Impedance:

Line :  0,4 V/less than 5 k Ω

Phones :  1 mW/8 Ω, 3mW/150 Ω

Echo Effect Volume:  0 to Max continuous variable

Bias Current Control Range:  ±15%

Calibration Signal:  Pink noise

Recording/Playback head:  Ferrite (conbination)

Erasing head:  ferrite

Monitor Switch:  Tape, Source Selector

Semiconductors:  17 Transitors; 27 Diodes; 8 IC's, 1 LED's

Power Supplies:  110 - 130 V / 220 - 240 V AC 50/60 Hz

Power Consumption:  14 W

Dimensions (W x H x D):  435 x 150 x 288 mm (17-1/8" x 6" x 11-1/4")

Weight:  6,9 kg  (15 lbs 3 oz)

I like

Marantz SD-7

Three head deck with metal tape and soft touch mechanism. Two speed, Microprocessor functions.

This compudeck is equipped with a microprocessor to allow you to program the machine in three basic ways. The unit is programmed with a calculator type keyboard where operations are keyed in a logical sequence.

Counter function

The microprocessor allows you to play any selected portion of the tape between two counter positions. You can repeat that portion or move on to another one by simply pushing the skip function.

Timer function

The microprocessor with its accurate incorporated clock allows you to program your deck for playback or recording at any time of the day, even when you are absent.

Programmable replay function

The microprocessor allows you to program your deck to search for songs in any order you wish (sequential or non sequential up to 19 songs) and to repeat them as many times as you like.

Two speed operation: audio engineers demonstrated long ago that increasing tape speed significantly improve high frequency response and dynamic range. With the already wide frequency response of the SD-7 at standard speed, the faster speed delivers exceptional reproduction quality in distortion, frequency and dynamics.

Dual motor drive: a smooth consistent tape transport system is essential to high quallity sound reproduction. That is why we use a highly refined, heavy duty DC servo motor and independent reel motor.

Sendust alloy R/P head: although it has been used in professional applications for several years, sendust alloy is just now beginning to appear in decks engineered for consumer use. It has received wide spread acclaim from professionals and audiophiles alike for its superior electrical characteristics and longer life expectancy.

Three head configuration with double Dolby:

Marantz utilizes a unitized housing for the record and playback heads. Because the gaps on both heads must be permanently aligned to prevent drastic high frequency roll-off. The single housing guarantees top performance and reliability. The benefit of three head configuration is its ability to provide tape/source monitoring while you record.

Dual gap erase head for superior erase performance.

Individual tape selectors and adjustable bias control: the SD-7 provides individual tape selectors (EQ/bias) for all three standard tape formulations plus one for todays new metal tape. For additional accuracy marantz has included a bias control that can be adjusted to compensate for the slight variations in bias requirements that exist between tapes of various manufacturers.

Specifications:

Style:  Direct Load

Tape Drive System:  Single capstan drive

Cartridge: philips type compact cassette

Track Stystem:  compatible Stereo 4-track 2-channel

Tape Speed:  4,75 cm/sec, 9,5 cm/sec

Heads:  3 head system

Rec/Play:  Sendust Alloy,

Erase:  Ferrite

Motor:  DC Servo Controlled Motor x 2

Meters:  LED peak x 2

Recording System:  AC Bias

Erasing System:  AC Erase

Semiconductor Complement:  91 Transistors; 71 Diodes; 7 IC's; 8 LED's

Overall Frequency Response (Dolby off)

Tape Speed at 20 dB for 4,75 cm/sec

Ferric Oxide Tape :  25 Hz - 17 kHz (±3 dB)

CrO₂ Tape :  25 Hz - 18 kHz (±3 dB)

Fe Cr Tape :  25 Hz - 18,5 kHz (±3 dB)

Metal Tape ;  25 Hz - 20 kHz (±3 dB)

Tape Speed at 20 dB for 9,5 cm/sec

Ferric Oxide Tape :  20 Hz - 21 kHz (±3 dB)

CrO₂ Tape :  20 Hz - 23 kHz (±3 dB)

Fe Cr Tape :  20 Hz - 23,5 kHz (±3 dB)

Metal Tape ;  20 Hz - 25 kHz (±3 dB)

Signal-to-Noise Ratio (CrO₂)

Tape Speed 4,75 cm/sec

Dolby On/Off :  69 dB / 60 dB

Tape Speed 9,5 cm/sec

Dolby On/Off :  72 dB / 63 dB

Wow and Flutter

Tape Speed 4,75 cm/sec

DIN WTD / WRMS :  0,08% / 0,05%

Tape Speed 9,5 cm/sec

DIN WTD/ WRMS :  0,06% / 0,03%

Outputs Level/Impedance

Line :  650 mV/1,2 k Ω

Headphone :  43 mV/150 Ω

Inputs Sensitivity/Impedance (level at 0 VU)

Line :  30 mV/35 k Ω

Mic ;  0,15 mV/6,8 k Ω

Fast Rewind and Forward Time :  80 sec.

AC Line Voltage:  220 V AC 50 Hz (110/220 V, 220/240 V 50/60 Hz)

Power Consumption:  63 W

Dimensions (W x H x D):  416 x 146 x 243 mm

Weight:  9,5 kg

I like

Marantz PM-8 amplifier

Stereo Control Console

Features Preamplifier Section:

Transient Intermodulation Distortion (TIM) design and controll versatility. Like the SM-7 and SC-7, features design parts specifically created to combat transient intermodulation distortion.

Low Noise and Low Distortion phono Equalizer

The Input is a cascade defferential formed of low-nooise FET's, followed by a complete push-pull amp and Darlington-connected SEPP output. The entire phono equalizer circuit in PM-8 is DC for low distortion, low-TIM performance and better transient response.

Pre-preamp for MC cartridges, the built-in pre-amp is DC using low noise Fets at the input. S/N ratio is extremely good thanks to low-impedance negative feedback circuitry.

Features Power Section

Powerful low-TIM performance. Marantz use DC configurationthrought and improved every circuit part for combat Transient Intermodulation Distortion, TIM

Marantz use high speed power transistors created to our specifications and still more important, and improved open-loop response to enable us to use a lower amount of negative feedback thereby reducing the more ordinary forms of distortion.

Low Noise and High Output configuration. The input of the Pm-8 is formed of a differential Dual FET with matched thermal characteristics. Next is a duall FET differential  amp. An emitter/follower buffer and a 3 stage darlington-connected output, ending in a parallel push-pull circuit. This latter circuit is formed of an array of EBTs (Emitter - Ballast - Transistor) with superb performance characteristics, both in high power output and high speed switching.

Separate power Supplies, Left ann Right channels receive power from separate supplies. The predriver and power output sections each have their own transformer. To further assure a constant energy supply a quartet of massive 15,000 µF capacitors are used.

Specifications:

Power Output (rating per channel)

320 W at 4 Ω DIN

270 W at 4 Ω RMS

200 W at 8 Ω DIN

190 W at 8 Ω RMS

Total Harmonic Distortion (RMS, 8 Ω):  0,03%

Intermodulation Distortion:  0,03%

Dampingg Factor:  100

Main In Sensitivity/Impedance:  1,5 V/30  k Ω

Frequency Response:  DC 100 Hz-kHz

Signal-to-Noise Ratio Main In:  125 dB

MM Cartridge Input

Frequency Response (RIAA):  ±0,2 dB

Signal-to-Noise Ratio:  90 dB

Input Impedance:  1/100/27/47 k Ω

Input Capacity:  200 pf

Input Sensitivity:  2 mV

Equivalent Noise at Input:  0,24 µV

Dynamic Range:  125 dB

Moving Coil Cartridge Input

Input Sensitivity/Impedance:  200 µV/ 10/47/100/220 Ω

Aux. Input Sensitivity/Impedance:   150 mV/40 k Ω

Frequency Response:  5 Hz -100 kHz

Signal-to-Noise Ratio:  105 dB

Output Voltage:

Tape Out ;  415 mV

Preamp Out :  1,5 V

Output Impedance

Tape Out :  250 Ω

Preamp Output :  100 Ω

 dimensions (W x H x D):  416 x 146 x 437 mm

Weight:  26 kg

Finish : Walnut Cabinet

I like

Luxman R-351 receiver

Digital Synthesized AM/FM Stereo Receiver

Luxman's audio excellence combines with todays computer intelligence in the new System Bus to bring you the heart of a totally integrated system. The R-351 features a robust 55 watts per channel. Convenience features include full system remote control, computer analuzed tuning, CD Syncro recording, record Out selector and a variable sleep timer. Multi-room system remote control is available with infrared or in-wall keypad operation. As with every "300" Series unit, the System Bus computer control offers the simplest method of operating your system ever. Also Duo beta, STAR Circuit, Voltage Driven Amplification, pre-amp Out.

Features:

20 Random Station memories - A total of 20 AM and /or FM stations can be memorized in any random pattern. Any station can be instantly recalled by touching the appropriate random station preset button without any need to change the Am or FM Input Selector, and the 20 stations can be recalled by local or remote control

Computer Store - This feature allows the internal computer of the R-351 to automatically store a series of FM or AM station in the 20 preset memory locations. The automatic storing sequence may be started at the first or any subsequent memory position and from any chosen frequency position on the FM or AM band.

Auto-Seek FM/AM Tuning - Allows automatic tuning of all stations (except weak stations below the muting level) on a station-by-station basis. This eliminates the tedium of manually fine tuning every station.

Specifications

Amplifier Section

Power Output : 55 W (8 Ω load, 20 -20,000 Hz)

Distortion:  0,08% (8 Ω load, 20 - 20,000 Hz)

Input Sensitivity/impedance:  150 ±30 mV /35 k Ω (ref. 1 kHz)

Frequency response:  10 Hz - 50 kHz (-3 dB, ref. 1 kkhz)

Signal-to-Noise ratio:  82 dB (500 mV input)

Tone Controls:

Bass (at 100 Hz) :  ±10 ±2 dB

Treble (at 10 kHz) :  ±10 ±2 dB

Residual Noise:  2 mV

Crosstalk:  60 dB 9ref. 1 kHz)

Separation:  56 dB (ref. 1 kHz)

Phono Section

Input Sensitivity/Impedance:  2,5 ±0,5 mV/47 k Ω

Frequency Response:  100 Hz - 10 kHz (±1,5 dB, ref. 1 kHz)

Signal-to-Noise Ratio:  74 dB (5 mV Input)

Crosstalk:  60 dB 9ref. 1 kHz)

Separation:  55 dB (ref. 1 kHz)

FM Section

Intermediate Frequency:  10,7 MHz

Frequency Range:  87,5 - 108 MHz

Usable Sensitivity:   25,2 dBf

50 dB Quieting Sensitivity (stereo):  52,2 dBf

Signal-to-Noise Ratio (stereo):  66 dB

Distortion (stereo):  0,5%

Frequency Response:  30 Hz - 15 kHz ±2,5 dB

Image rejection:  60 dB

If Rejection:  65 dB

Stereo Separation (stereo):  37 dB (ref. 1 kHz)

MW, AM Section

Intermediate Frequency:  450 kHz

Frequency Range:  522 - 1611 kHz

Usable Sensitivity (20 dbS/N):  73,2 dBf

Signal-to-Noise Ratio:   45 dB

Distortion:  1,5%

Image Rejection:  28 dB

Frequency Response:  100 Hz - 2 kHz (-3 ±3 dB)

LW Section

Intermediate Frequency:  450 kHz

Frequency Range:  153 - 281 kHz

Usable Sensitivity (20 dbS/N):  89,2 dBf

Distortion:  1,5%

Image Rejection:  28 dB

IF Rejection:  25 dB

General Section

Semiconductors:  20 ICs; 58 Transistors; 46 Diodes; 3 Zener Diodes; 1 FET

Power Supply:  Ac 120/220/240 V 50/60 Hz

Dimensions (W x H x D):  438 x 115 x 330 mm

Weight:  9 kg

I like

Luxman LV-112 amplifier

Luxman Integrated Amplifiers all employ voltage-driven amplification for optimum dynamic performance with negligible transient intermodulation or slew induced distortion. In addition all use High Energy power supplies with high filter capacitance to provide the steady state and dynamic power necessary for proper reproduction of even the most demanding musical transients.

The LV-112 presents such Luxman features as a subsonic filter to remove very low frequency components resulting from warped records, tone arm resonances or other causes, and "Line Straight" which bypasses tone and other controls for the shortest direct path to the power amplifier ensuring the best possible fidelity, imaging and sonic impact.

Specifications

Rated Continuous Power Output:  55 W per channel (20-20,000 Hz, 8 Ω at rated T.H.D.)

Dynamic Power Output:  120 W at 4 Ω; 150 W at 2 Ω

Peak Short-Circuit Current:  25 A (400 Hz toneburst, 5% duty cycle)

Total Harmonic Distortion:  0,05% (20-20,000 Hz, 8 Ω Full Power)

Intermodulation Distortion:  0,02% (60 Hz : 7 kHz = 4:1, 8 Ω, Full Power)

Signal-to-Noise Ratio:

Phono :  84 dB (re 5mV)

CD, Tape, Video :  95 dB (re 0,5V)

Frequency Response:

Phono (RIAA) :  20 Hz - 20,000 Hz ±0,5 dB

CD, Tape, AV, AUX :  6,5 Hz - 150,000 Hz (at -3 dB)

Power Supply: 110 - 120, 220 - 240 V 50/60 Hz

Dimensions (W x H x D): 17-1/4" x 5-3/8" x 14-3/8"

Weight:  19,8 lbs

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Sony PS-1700 turntable

Stereo Turntable

The PS-1700 is a new introduction to our range of stereo turntables, incorporating belt drive and a high sensitvity static balanced tone arm. It comes complete with a Sony cartridge.

Features

Automatic arm return and stop

Belt driven alluminium die-cast turntable

High signal to noise ratio, low wow and flutter

Precision pivot bearings and bias compensator for low distortion.

Specifications

Type:  semi-automatic

Platter Diameter:  300 mm (11-13/16")

Speeds:  33-1/3 and 45 rpm

Drive System:  belt-drive

Motor:  4-pole semi-synchronous

Speed Control Range:  fixed (allowance ±2%)

Wow and Flutter:  less than 0,08% DIN 0,06% WRMS

Signal-to-Noise Ratio:  63 dB DIN

Tone-arm Type:  Static balanced

Overal Arm Length: 300 mm (11-13/16")

Pivot to Stylus:  8-1/2 inches (216,5 mm)

Overhang:  21/32 inch (15,5 mm)

Trackening Error:  +3° -1°

Stylus Force adj. Range:  0 - 3 g

Anti-skating adj. Range:  0 - 3 g

Shell Weight:  7,5 g

Cartridge Weigt Range:  4 - 8 g

Cartridge Type:  VL-32 G

Channel Separation:  25 dB at 1 kHz

Output Voltage:  4 mV at 1 kHz, 3 mV at 1 kHz

Load Impedance:  50 - 100 k Ω (50 k Ω recommended)

Tracking Weight:  2 g recommended

Stylus:  ND 135G conical, 0,5 mil diamond

Power Requirements:  AC 110, 127, 220 and 240 V 50/60 Hz

Dimensions (W x H x D):  445 x 160 x 370 mm (17-1/2" x 6-1/4" x 14-5/8")

Weight:  7,4 kg (16,5 lbs)

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