Toshiba SB-404 amplifier

Technical Features

The all stage direct coupling OCL (Output Condenser Less) type IC amplifiers (output music power 68W) are installed in all the four main amplifiers to increase their performance and reliability.

When used with two speakers and a BTL (Balanced Transformer Less) connection, approximately twice as much power is obtained, than when used with only one speaker.

All the two channel program sources (record, open reel, cassette, cartridge tape, FM broadcasting, etc.) can be reproduced in the four channel fashion with the built-in QME (QM Effect) unit.

This stereo amplifier has a built-in special condenser-cartridge (model number C-401S) amplifier and consequently can be directly connected to the player, and further can be switched to the magnetic cartridge with the aid of the switch.

The level of each channel can be easily adjusted, because the accurate detection of the level of each channel is made possible by the four built-in large scale level meters.

The low-noise transistors, which are produced on the basis of the PCT manufacturing method developed by the Toshiba, are used for all transistors in this amplifier.

The reproduction of all the channel program sources is possible with this unit because two systems of input terminals for four channels are provided.

The four channel tape deck can be also used with this amplifier.

Two channel headphone may be used as well as the four channel type, (model number HR40) utilizing both the front and rear headphone jacks provided.

Condenser-Cartridge Amplifier

There are two types of cartridge, the velocity proportional type (MM, MC, etc.) and the amplitude proportional type (photoelectric cartridge, etc.). The condenser-cartridge belongs to the latter type and a special correction curve different from the conventional one is necessary. The power for the ICs in the cartridge is supplied through the ground of the input terminal R channel. This amplifier can be directly connected with the condenser cartridge (This is not the case for the photoelectric cartridge).

BTL Circuit

When the four channel amplifier is used for reproduction with two speakers, this circuit is used in order to operate the four amplifiers effectively. The output voltage of two factors of magnitude can be supplied between the output terminals of each amplifier when the one speaker is operated in phase and the other out of phase with the use of the phase reverse circuit.

Although the output power is theoretically of the four factors of magnitude from the relation, —(2V)?/R=4V?/R, that is in practice reduced to about two factors of magnitude due to losses such as the regulation of the transformer, the emitter resistance, etc.

Main Amplifier

Music Power Output (IHF):

30 W x 2 (at 8 Ω  BTL. 0,8% THD)

17 W x 3 (each channel at 8 Ω , 0,4% THD)

Continuous Power Output:

26 W x 2 (at 8 Ω , BTL, 0,4% THD)

15 W x 4 (each channel , 8 Ω , 0,4% THD)

Output:  IHF Music Power on x 2 (Distortion 0.8% BTL 17 W x 4 RMS. 96 W x 2 BTL. (Distortion 0.4%) 15 W x4

Distortion Factor:

Total Harmonic Distortion Factor: At rating output 0.4% At 2 W output 0.1%

Intermodulation Distortion Factor: At rating output 0.8% At 2 W output 0.2%

Frequency Response:  1O Hz - 55 kHz +0, -3 dB

Input Sensitivity and Impedance:

Main In :  0,5 V (37 k Ω )

Residual Noise:  0,8 V/8 Ω 

Damping Factor: 20 (8 Ω )

Speaker Impedance:  4 - 16 Ω  (BTL  8 - 16 Ω )

Pre-amplifier

Input Sensitivity and Impedance:

Phono 1 Mag :  3 mV / 47 k Ω 

Phono 1 CC :  30 mV/70 k Ω 

Phono 2 :  3 mV/47 k Ω 

Tuner :  150 mV/47 k Ω 

Aux 1 (4CH) :  150 mV/47 k Ω 

Aux 2 (4 CH) :  150 mV/47 k Ω 

4CH Tape :  300 mV/47 k Ω 

Recording Output:

Tape Rec :  150 mV

DIN :  30 mV

Pre Out :  0,5V (Max. 4,2 V)

Frequency Response:  5 Hz - 100 kHz +0 -3 dB

Total Harmonic Distortion Factor:  At rating output 0,04%

Maximum Input Voltage:  

Phono Mag :  100 mV (1 kHz)

Phono CC :  1,2 V (1 kHz)

Tone Control

Bass :  ±10 dB at 100 Hz

Treble :  ±10 at 10 kHz

Equalizer:  RIAA Standard +0,5 dB, -0,5 dB (Curve)

Signal-to-Noise-Ratio: 

Phono Mag :  65 dB (3 mV)

Phono CC :  70 dB (30 mV)

Phono Aux  :  80 dB (150 mV)

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

Transistors:  5 ICs , 26 Transistors, 10 DIodes

Dimensions (W x H x D):  400 x 280 x 150 mm (15-3/4" x 11" x 4-1/2")

Weight:  7,5 kg (16 lbs)

 

Toshiba SA-504 4-ch receiver

4-channel FM/AM/FM Stereo receiver, features:

BTL circuit (53 W x 2,8 rms, 8 Ω , 0,8%)

ITL-OTL-OCL pure complementary symmetry circuit

MOS FETs FM front end

4-gang linear frequency FM tuning condenser and tuned RF AM section

Built-in condenser cartridge equalizing circuit

Built-in QM and SQ 4-channel matrix decoder

CD-4 4-channel adaptor terminals

Black dial

Natural Walnut cabinet

 

Specifications

FM Tuner Section

Tuning Range :  88 - 108 MHz

Sensitivity: 1,8 µV (IHF)[1,8 µV, S/N=30 dB]

Signal-to-Noise Ratio:  66 dB

Capture Ratio:  1,5 dB

Image Rejection:  60 dB

IF Rejection:  80 dB

Spurious Rejection:  100 dB

AM Suppression:  50 dB (IHF)

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

Harmonic Distortion:

Mono :  0,2% at 400 Hz (100% modulation)

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

FM Stereo Separation:  35 dB at 1,000 Hz

19 kHz, 38 kHz Suppression:  50 db

AM Tuner Section

Tuning Range:  530 - 1605 kHz

Sensitivity :  15 µV (IHF)

Signal-to-Noise Ratio:  45 dB

Selectivity :  30 dB (±10 kHz)

Overload :  2 V/m at 1,000 Hz

IF Rejection:  70 dB

Harmonic Distortion :  1 %

Audio Section

Power Output:  30 W x 4 (rms 0,4%, 8 Ω , each channel driven) or 53 W x 2 (at BTL connection, rms 0,4%, 8 Ω , each channel driven)

Frequency Response:  20 - 40,000 Hz 12 dB

Power bandwidth:  10 - 80,000 Hz (IHF, 0,4%)

Signal-to-Noise Ratio

Phono :  65 dB

Aux :  80 dB

Input Sensitivity/Impedance (for rated output):

Phono :  2,5 mV/47 K Ω

CC :  30 mV/70 k Ω

Aux :  160 mV/47 K Ω

Tape :  160 mV/47 K Ω 

Damping Factor:  20 at 8 Ω

Tone Control:  ±10 dB at 100 Hz and/or 10 kHz

High Cut Filter:  6 dB /oct, fc = 9000 Hz

Low Cut Filter:  6 dB/oct, fc = 30 hz

Residual Noise:  1,5 mV or less

Loudness Control:  +10 dB (ay 100 Hz); +4 dB (at 10 kHz)

Total Control

Volume :  4-gang, co-axial

Tone Control : Bass and treble for each Front and Rear channel :  4-gang, co-axial

Balance :  4 (discrete)

Selector :  AM/FM auto/Phono/Aux 1 (4-ch)/ Aux 2 (4-ch)

Mode :  Mono/Stereo/4-ch 1 (QM)/4-ch 2 (SQ)/4-ch 3 (discrete)

Power/ Speaker Switch :  PWR Off/A (4-ch)/SP Off ]/B (2-ch)/A+B

Accessory Switch :  CC/Mag; Tape monitor, FM muting, Loudness, AFC, audio mute; Hi/Lo cut

Antenna

FM :  300/75 Ω  terminals

AM :  Ferrite core antenna, external antenna terminals

Connector :  Aux (4-ch), Phono (Mag/CC), Rec /P.B. (4-ch), 2-AC outlet, Headphone (frontand rear) pre-out/main-in

Accessory Circuit:  Circuit breaker for final stage FM muting, audio muting, signal strength meter, center-zero meter

Semiconductors:  5 ICs; 3 FET, 38 Transistors; 24 Diodes

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

Cabinet:  Natural walnut

Dimensions (W x H x D):  508 x 125 x 356 mm (20" x 4-7/8" x 14")

Weight:  15 kg (33 lbs)

 

Toshiba SA-304 4-ch receiver

4-channel FM/AM/FM Stereo receiver, features:

BTL circuit (20 W x 2 rms, 8 Ω , 0,8%)

IC power output section

MOS FETs FM front end

Built-in QM 4-channel matrix decoder

CD-4 4-channel adaptor terminals

Black dial

 

Specifications

Tuner Section

Tuning Range

FM :  88 - 108 MHz

AM :  530 - 1605 kHz

Sensitivity:

FM :  2,5 µV (IHF)

AM :  20 µV (IHF)

Signal-to-Noise Ratio

FM :  62 dB

AM :  45 dB

Capture Ratio:  2,5 dB

Image Rejection:

FM :  55 dB

AM :  35 dB

IF Rejection:

FM :  60 dB

AM :  30 dB

AM Suppression (FM):  35 dB

FM-ST Separation:  30 dB at 1000 Hz

Audio Section

Power Output:  10 W x 4 (4-ch), 20 W x 2 (BTL) rms each channel driven , 8 Ω , 0,8%

Frequency Response:  20 - 40,000 Hz ±2 dB

Power bandwidth:  20 - 30,000 Hz (IHF, 0,8%)

Signal-to-Noise Ratio

Phono :  60 dB

Aux :  70 dB

Input Sensitivity/Impedance (for rated output):

Phono :  3,0 mV/200 K Ω

CC :  30 mV/70 k Ω

Aux :  200 mV/100 K Ω

Damping Factor:  26 at 8 Ω

Tone Control:  ±10 dB at 100 Hz and/or 10 kHz

Residual Noise:  0,8 mV

Loudness Control:  +10 dB (ay 100 Hz); +4 dB (at 10 kHz)

Total Control

Volume :  4-gang, co-axial

Bass :  4-gang, co-axial

Treble :  4-gang, co-axial

Balance :  4 (discrete)

Selector :  AM/FM auto/Phono/Aux (4-ch)

Mode :  Mono/Stereo/4-ch 1 (QM)/4-ch 2 (SQ)/4-ch 3 (discrete)

Power/ Speaker Switch :  PWR Off/A (4-ch)/SP Off ]/B (2-ch)

Accessory Switch :  Tape monitor, 4-speaker/BTL, FM mute

Antenna

FM :  300/75 Ω  terminals

AM :  Ferrite core antenna, external antenna terminals

Indicator:  FM-ST indicator; F/AM tuning meter

Semiconductors:  5 ICs; 3 FET, 38 Transistors; 24 Diodes

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

Cabinet:  metal cabinet

Dimensions (W x H x D):  400 x 125 x 290 mm (15-3/4" x 4-7/8" x 11-3/8")

Weight:  8,2 kg (18 lbs)

 

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)

 

Toshiba SC-410 amplier

4-channel QM Decoder/Amplifier

Features:

Decodes almost any type of encoded matrix 4-channel discs at four modes of 4-channel effect

Decodes 4-channel programs from ordinary non-encoded discs into quasi-quadraphonic stereo sound

Built-In IC power amplifier for two sets of rear channel speaker systems

Connectable to any type of stereo amplifier furnishing DIN socket and PIN "pre-out/in" jack

 

Specifications

Power Output:  30 W rms into 8 Ω  at 0,8% T.H.D.

Frequency Response:  20 - 40,000 Hz (exclude QM section)

Power Bandwidth:  20 - 40,000 Hz (exclude QM section)

Semiconductors: 

2 Transistors for AF amplifier;

1 Diode for power supply;

2 ICs (TH-9015P's) for power output section;

4 FET's and 4 Transistors for QM decoder

Control:

Main volume, sub volume, selector 2-ch/4-ch/tape/aux; Power off; speaker A & B, QM effect (concert hall/studio/surround/stage0; Hi-cut

Jack and Terminals:

DIN socket, input/output jack, AC unswitched outlet, speaker terminal

Dimensions (W x H x D):  300 x 115 x 385 mm (11-3/4" x 4-1/2" x 15")

Weight:  6 kg (13-1/4 lbs)

 

Toshiba SC-410 4-channel

4-channel QM Decoder/Amplifier S.C.-410

Decodes almost any type of encoded matrix 4-channel discs at four modes of 4-channel effect.

Decodes 4-channel programs from ordinary non-encoded discs into quasi-quadraphonic stereo sound

Built-in IC power amplifier for two sets of rear channel speaker systems

Connectable to any type of stereo amplifier furnishing DIN socket and PIN "pre out/in" jack

 

Specifications

Power Output:  30 W rms, 8 Ω , T.H.D. 0,8% (total)

Frequency Response:  20 - 40,000 Hz (exlude QM section)

Power Bandwidth:  20 - 40,000 Hz (exclude QM section)

Semiconductors: 

2 Transistors for AF amplifier

1 Diode for power Supply

2 ICs (TH-9015P's) for power output section

4 FET's and 4 Transistors for QM decoder

Controls:  Main volume, Sub volume, Selector (2-ch/4-ch/tape/aux), Power Off, Speaker A & B, QM effect (concert hall/studio/surround/stage), Hi-cut

Jack and Terminal:  DIN socket, Input/output jack, AC unswitched outlet, speaker terminal

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

Dimensions (W x H x D):  300 x 115 x 385 mm (11-3/4" x 4-1/2" x 15")

Weight:  6 kg (13-1/4 lbs)

 

Pioneer QX-8000A 4-channel receiver

To compose an ideal 4-channel stereo system, the QX-8000A, a solid state AM/FM stereo receiver, can be combined with four speaker systems, tape decks, turntables, etc. With a 4-channel stereo tape deck or cartridge tape player installed, the QX-8000A can provide a discrete 4-channel playback of programs recorded on tape.

 

4-Channel Reproduction from Matrix 4-Channel Source

The self-contained matrix circuit permits 4-channel reproduction from matrix 4-channel records or FM stereo broadcasts. The mode switch has positions for regular matrix and SQ matrix reproduction, allowing reproduction to take either of these forms.

 

Matrix Reproduction from 2-Channel Source

A 2-channel signal from a record of FM broadcast can be reproduced in 4-channel form via the regular or SQ matrix circuit. In this case, the result is an improvement over ordinary 2-channel stereo reproduction.

 

2-Channel Stereo Performance

Conventional 2-channel stereo performance can be provided through an arrangement or two speaker systems in the front; Ieft-side speaker system and right-side speaker system. A 2-way multi-amplifier system can be set up by installing an electronic crossover network.

 

Features

 

Acoustical field reproduction from 4-channel stereo

The amplifier section consists of four separate channels having excellent frequency response and very low distortion, providing for 4-channel discrete reproduction of a 4- channel source (recorded tape).

 Choice of matrix decoder

The OX-8000A offers a choice of two decoders; the regular matrix and the SO matrix. The source may be a matrix recording or FM broadcast of a matrix recording. The result is realistic 4-channel reproduction.

 Matrix circuit for ordinary 2-channel stereo

Use of the internal matrix circuit enhances the effect of ordinary 2-channel stereo source material, over and above that normally obtainable.

 Also works as standard 2-channel stereo receiver

lf you only have one pair of speakers now, you can use the OX-8000A as a regular 2-channel stereo receiver and add the other two speakers at a later date.

 Permits 4-Channel or 2-Channel tape recording

lf you already own a 2-channel stereo tape deck, you can go on using it for recording and playback as before. However, if you plan to buy a 4-channel tape recorder, you can use fully the discrete 4-channel capabilities, playing back 4-channel pre-recorded tapes with true 4-channel sound.

 Fully equipped with 4-channel Auxiliary controls and inputs

There are three balance controls: front left-right balance, rear left-right balance, and front-rear balance. These give you complete control over the 4-channel sound field. Also, separate stereo headphones for the front and rear channels are provided important when monitoring 4- channel tape recordings. Other features include "speakers in operation" indicator lamps, program indicator lamps, loudness switch, high and low filter switches, FM muting switch, 300Q and 75O (coaxial) FM antenna terminals, and a 4-position channel mode selector.

 Versatile tape-to-tape duplicating facilities

Normal 2-channel tape-to-tape dubbing is possible too, as well as 4-channel tape-to-tape duplicating.

 FET-equipped FM tuner

The FM tuner is equipped with an FET in its front end to improve selectivity and sensitivity. Also, the lF stage employs one hybrid and one monolithic lC, replacing numerous transistors, ceramic filters, etc., and raising the tuner's sensitivity and selectivity. The FM MPX decoder works according to the time switching system and boasts excellent channel separation. Tuning is made easy by the linear FM dial and the double (signal strength and center zero tuning meters.

 Built-in AM ferrite Bar antenna

Sensitive and highly directional. An outdoor AM antenna is not required in most cases.

 Low-distortion High-Power Audio amplifier

Both tone controls and equalization amplifier operate with a generous amount of negative feedback for improved frequency response accuracy and flatness. The power amplifier is a quasi-complementary design, a tried-and-true circuit construction.

 All new 4-Channel exterior design

Cabinet and control panels are visual symbolizations of the Pioneer "4-channel" concept, with a recessed, framed, square tuning dial, a modernistic and logically arranged control panel, and the famous silver-black-wood Pioneer color styling.

 

Specifications

FM Tuner Section

Frequency Range:  88 MHz to 108 MHz

Usable Sensitivity (l HF):  2,2 µV

Capture Ratio (lHF):  3 dB

Selectivity (lHF):  better than 40 dB

lmage Rejection:  better than50 dB (98 MHz)

lF Rejection:  better than 85 dB (98 MHz)

Spurious Rejection:  better than 80 dB (98 MHz)

AM Suppression:  50 dB

Signal to Noise Ratio:  60 dB

Harmonic Distortion: 

Mono :  less than 0,6% (100% modulation)

Stereo :  less than 0,8% (100% modulation)

Tuning lndicator:  Signal Strength type and Center tuning type

Muting:  Switchable to On/Off

Stereo Separation:  better than 40 dB (1 kHz)

Sub Carrier Suppression:  better than 32 dB

Antenna lnput:  300 Ω  (balanced), 75 Ω  (unbalanced)

De-emphasis switch:  75 µs/50 µs (5 line voltage model except SABS-approved model)

AM Tuner Section

Frequency Range:  525 kHz to 1605 kHz

Usable Sensitivity (lHF):  15 µV

Selectivity (lHF):  better than 25 dB

lmage Rejection:  better than 45 dB (1,000 Hz)

lF Rejection:  better than 30 dB

Signal to Noise Ratio:  better than 50 dB

Antenna:  Built-in ferrite loopstick antenna

Power Amplifier Sections

Music Power Output (lHF):

180 W at 4 Ω 

130 W at 8 Ω 

Continuous Power Output:  43 W / 43 W / 43 W / 43 W (at 4 Ω )

1 kHz each channel driven:  30 W / 30 W / 30 W / 30 W (at 8 Ω )

Continuous Power Output:  36 W + 36 W / 36 W + 36 W (4 Ω )

1 kHz 2-channels driven:  27 W + 27 W / 27 W + 27 W (8 Ω )

Continuous Power Output:  4 x 27 W  (4 Ω )

1 kHz 4-channels driven:  4 x 22 W (8 Ω )

Power Output in the range of 2O Hz to 2O kHz(2-channels driven) :  21 W + 21 W (8 Ω , Harmonic  Distortion less than 1%)

Harmonic Distortion: 

Less than 1% (Continuous Power Output)

Less than 0.05% (8 Ω   14 W + 14 W/14 W + 14 W Power Output)

lntermodulation Distortion:  

Less than 1 % (Continuous Power Output)

Less than 0.1% (8 Ω   14 W + 14 W / 14 W + 14 W Power Output)

Power Bandwidth (lHF):  10 Hz to 100 kHz (8 Ω , Harmonic Distortion less than 1%)

Frequency Response:  5 Hz to 100 kHz, ±3 dB

Input Sensitivity/lmpedance (1 k Hz Continuous Power Output):  400 mV/70 k Ω

Speakers:  4 to 16 Ω

Damping Factor:  35 (8 Ω , 1 kHz)

Preamplifier Section

Output Voltage:  400 mV (rated output)

Harmonic Distortion:  less than 0,5%

Frequency Response:  10 Hz to 40 kHz ±3 dB

Input Sensitivity/lmpedance (1 kHz, for rated output)

Phono 1 Mag :  2 mV / 50 k Ω

Phono 2 Mag :  2 mV / 50 k Ω

Mic :  8 mV / 120 k Ω

Aux 1, 2 :  170 mV / 130 k Ω

Tape Monitor 1, 2 :  170 mV / 130 k Ω

Recording Output: Tape Rec :  170 mV (Pin jack)

BASS Control:  -12 dB, +11 dB at 100 Hz

TREBLE Control:  -8,5 dB ; +10,5 dB at 10 k Hz

LOW Filter:  -6,5 dB at 50 Hz (6 dB/oct)

HIGH Filter:  -11,5 dB at 10 kHz (6 dB/oct)

Equalization Curve:  Phono RIAA standard

Loudness Contour:  +11,5 dB / 100 Hz +7 dB / 10 kHz (Volume -40 dB)

Hum and Noise (lHF Short circuit, A Network): 

Phono :  better than 75 dB

Aux :  better than 90 dB

MISCELLANEOUS

Semiconductors:  3 FETs; 2 ICs; 77 Transistors; 33 Diodes

Power Requirements:  110, 120, 130, 220, and 240 V 50/60 Hz

Power Consumption:  250 W (max)

AC Outlets:  1 x switched, 1 x unswitched

Dimensions (W x H x D):  509 x 172 x 377 mm (20" x 6-3/4" x 15-5/8")

Weight Without package:  15,6 kg (34 lb 5 oz)

With package:  18,6 kg (40 lb 15 oz)

 

Technics SA-8500X

The concept is simple. The execution is precise. The performance is outstanding - the name is Technics.

The SA-8500X - first 4-channel receiver with automatic CD-4 separation.

Until now you had to depend upon your hands, your eyes and your ears to bring you 4-channel sepaation CD-4 records. When they missed, so did you.

With the Technics SA-8500X. Instead of trial and error, the SA-8500X brings you automatic and continuous  CD-4 separation.

The SA-8500X has just about everything else you might want for command of 4-channel. Automatic carrier level controls. A CD-4 dmodulator with LSI IC's for discrete 4-channel records. A decoder for both types of matrix. And an MPX output ready for discrete FM broadcasts.

There's also plenty of power; 26 watts per channel minimum RMS, at 8 ohms from 20 Hz to 20 kHz, at 8 ohms from 20 - 20 kHz with no more than0,5% THD.

But equally important, all this power is under your control. With 4 VU meters  for visual conrtol of 4-channel balance. 3 tape monitors.  Clik-stop tone controls.  High and low filter switches. And a 20 dB audio muting switch for reducing sound oudput without changing the volume setting.

We've also put a 4-pole dual-gate MOS and 3 ceramic  IF filters into the FM section. So you get a sensitivity of 1,9 µV (IHF).

For stereo, a simple flick of a switch on the front panel straps the amplifiers together.  Producing 80 watts per channel, minimum RMS. At 8 ohms from 20 Hz - 20 kHz with no more  than 0,5% THD.

The SA-8500X - it's the way to hear everything in 4-channel the way it should be heard. Because it's the first 4-channel receiver with both automatic carrier level controls and automatic CD-4 separation.

Specifications

Amplifier section

Music Power (IHF):

4-Ch Operation :  260 W at 4 Ω; 180 W at 8 Ω;

2-Ch Operation :  250 W at 8 Ω

Continuous Power (1 kHz RMS):

4-Ch Operation (all channel driven) : 

40 W/40 W/40 W/40 W at 4 Ω

34 W/34 W/ 34 W/34 W at 8 Ω

2-Ch Balanced Transformerless Operation

Both Channels Driven :  85 W/85 W at 8 Ω

Continuous Power (20-20,000 Hz RMS):

4-Ch Operation:

All Channels Driven : 

28 W + 28 W + 28 W + 28 W at 4 Ω

26 W + 26 W + 26 W + 26 W at 8 Ω

2-Ch Balanced Transformerless Operation

Both Channels Driven :  80 W + 80 W at 8 Ω

Total Harmonic Distortion:  0,5%

Intermodulation Distortion (60 Hz : 7 kHz = 4:1, SMPTE) :  0,7%

Power Bandwidth (all ch. driven at 8 Ω):  5 Hz  - 40 kHz -3 dB

Frequency Response:

Phono : RIAA standard curve ±1 dB

Aux :  7 Hz - 70 kHz +0 -3 dB

Residual Hum and Noise: 1,5 mV

Input Sensitivity/Impedance: 

Phono :  2 mV/50 k Ω

Aux :  180 mV/30 k Ω

Playback :  180 mV/30k Ω

Signal-to-Noise Ratio (IHF-A): 

Phono :  70 dB

Aux :  90 dB

Tone Controls:

Bass :  50 Hz ±11 dB

Treble:  10 kHz +10 dB - 10
 Loudness control (Volume at -30 dB):  50 Hz +10 dB

Filters:

Low :  200 Hz, -6 dB

High :  7 kHz,   -6 dB/oct

Audio Muting:  -20 dB

Rec Out:  180 mV

Damping Factor:  10 at 4 Ω ; 20 at 8 Ω

Load Impedance:

Main or Remote :  4 - 16 Ω

Main + Remote : 8 - 16 Ω

FM Tuner Section

Frequency Range:  88 - 108 MHz

FM Sensitivity (IHF):  1,9 µV

Alternate Channel Selectivity:  66 dB

Harmonic Distortion [mono/stereo]:  0,3%/0,4%

Signal-to-Noise ratio:  65 dB

Frequency Response:  20 Hz - 13 kHz ±1 dB

Image Rejection (at 98 MHz):  55 dB

IF Rejection (at 98 MHz):  60 dB

Spurious Resposne Rejection (at 98 MHz):  60 dB

Capture Ratio:  1,5 dB

Am Suppression :  50 dB

Stereo Separation (at 1 kHz):  40 dB

Leak Carrier (19 kHz, 38 kHz)

Am Tuner Section:  frequency Range :  520 - 1610 kHz

Sensitivity:  20 µV

Selectivity:  25 dB

Image Rejection ( at 1000 kHz) :  40 dB

IF Rejection (at 10000 KHz) :  40 dB

General:

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

Power Consumption:  360 W

Dimensions (W x H x D):  21-11/32" x 6-3/32" x 15-9/16"

Weight:  37,3 lb