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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





Showing posts with label AKAI. Show all posts
Showing posts with label AKAI. Show all posts

Akai M-10 tape deck

This Three Motors Auto-Reverse Solid State Stereo Tape Recorder offers you perfect stereo hi-fi tape recording and automatic reverse playback with concert hall sound.

 

Outstanding Features

4-track stereo/monaural recording and playback

3 speed  (7-1/2; 3-3/4; and 1-7/8 ips)

3 heads - Erase, Playback/Record and bias heads - Crossfield Head System

3 motors -  A hysteresis synchronous 3-speed motor for capstan drive; Two 6-pole eddy current out rotor motors for supply and take-up reel drive.

Wide Cross-Field Frequency Response

40 W music power solid state amplifier with two integrated circuits

Sensing tape continuous reverse (Auto reverse)

Manual reverse

Shield type head for high Signal-to-Noise Ratio

Sound on sound

Automatic stop/shut off; Instant stop control with start button

Automatic pinch wheel release, Automatic lever release

Two lever system ensures dependable and durable operation

Track selector for simple operation between stereo and monaural

Tape lifter in fast forward and rewind operation

100 kHz biased for FM multiplex recording

Tape speed equalizer

Treble and Bass controls

DIN jack with selector switch for High Low input

Two stereo headphone jacks

4-digit index counter with reset button,

Two large VU meters

Vertical or horizontal operation

Fine oil finished wooden cabinet or vinyl leather wooden cabinet

Universal voltage selector ( from 100 V to 240 V, 50/60 Hz)

 

Cross-Field Head

On conventional recorders the signal and bias are applied to the same recording head. Therefore the frequencies recorded, especially the high frequency component of the recorded signal tend to be attenuated or erased by the effect of the bias field.

On the exclusive Akai Cross0Field Head which was developed by Akai for practical use the signal and bias heads are mounted in opposition with their centres slightly off. As the recorded signal is entirely unaffected by the prevailing effect of the entire frequency spectrum with maximum fidelity.

 

Sensing Tape Continuous Reverse

Automatic reverse with metallic sensing tape is used for playback only. Reverse operation will occur when metalic sensing tape on prerecorded tape makes contact with the Sensing PIN. Put metallic sensing tape as the desired reverse point on shiny side of the prerecorded tape and another metallic sensing tape at the desired reverse point  on dull side of the prerecorded tape. So, the M-10 will give continuous playback in both directions between two points

 


Specifications

Tape Speed: 7-1/2; 3-3/4; and 1-7/8 ips

Wow and Flutter

At 7-1/2 ips :  less than 0,08% rms

At 3-3/4 ips :  less than 0,12% rms

At 1-7/8 ips :  less than 0,20% rms

Frequency Response

At 7-1/2 ips :  30 - 26,000 Hz

At 3-3/4 ips :  30 - 19,000 Hz

At 1-7/8 ips :  30 - 9,000 Hz

Distortion: within 2% 1,000 Hz 0VU

Signal-to-Noise Ratio :  better than 50 dB

Input Level

Mic :  better than 0,5 mV

Line :  better than 50 mV

DIN :  better than 5 mV (Low); 50 mV (high)

Power Output: 

15 W maximum per each channel at Undistorted Power, total 30 W

20 W maximum per each channel at Music Power, total 40 W

Equalization:  Correct equalization for playback of tapes recorded to the NAB curve

Recording Bias Frequency:  100 kHz

Recording Level Indicator:  2 VU meters

Recording System:  4-track stereo / monarual, Cross-Field bias system

Fast Forward and Rewind Time:  75 seconds using 1,200 foot tape at 50 Hz  (60 seconds at 60 Hz)

Recording Capacity: 

8 hours monaural recording at 1-7/8 ips (1,200 foot tape)

4 hours stereo recording a 1-7/8 ips

Max. Reel Size:  7" reel

Head: 3 heads - Erase, Rec/Pb, Bias

Motor:  3 motors- hysteresis synchronous 3-speed motor ; Two 6-pole eddy current out rotor motors

Speaker:  2 - 4" x 6" speakers

Semiconductors:  22 Transistors; 2 ICs

Power Requirements:  AC 100 to 240 V 50/60 Hz

Power Consumption:  165 W

Dimensions:  474 x 350 x 242 mm (18-3/4" x 13-3/4" x 9-1/2")

Weight:  22 kg (48,4 lbs)


 

Akai X-330D reel-to reel

Stereo Tape Deck with Multi-Purpose Program Minder

The X-330D enables to enjoy different music for 24 hours, in addition to selection and repeating your favourite tune forever.

 


All features:

Program Minder - Automatic Continuous Reverse

Sensing tape continuous reverse. Manual reverse

Cross-field head

3 motors -  A hysteresis synchronous 3-speed motor for capstan drive; Two 6-pole eddy current out rotor motors for supply and take-up reel drive.

3-speed  (7-1/2; 3-3/4; and 1-7/8 ips)

Magnetic brake with tach generator (stoppage occurs within 3seconds from F.F/RWD condition (10-1/2"  reel)

Up to 10-1/2 reel acceptable and back tension control

4-track stereo/monaural recording/playback. For playback the X-330D requires an external power amplifier and speakers

4 heads - Erase, Playback, Record and bias heads

All silicon transistorized pre-amplifier

12 hours continuous hi-fi stereo recording capacity at 1-7/8 ips (7,200 foot tape)

Shield type head for high Signal-to-Noise Ratio

Tape lifter in fast forward and rewind operation

Track selector for simple selection between stereo and monaural

Automatic stop/shut off, Automatic pinch wheel release

Sound on sound, sound with sound, sound over sound

100 kHz biased for FM multiplex recording

Remote controllable, AC outlet with automatic shut off switch

Standard/ low noise tape selector

Tape cleaner, 4-digit index counter with reset button, VU meters

Fine oil finished wooden cabinet

Universal voltage selector ( from 100 V to 240 V, 50/60 Hz)


Akai CR-80 SS cartridge tape recorder

8-Track, 4/2-Channel Cartridge Recording /Playback

Model CR-80 SS is equipped with a built-in 4-channel power amplifier and 4 Speaker Jacks for Instant 4-channel or 2-channel operation. This compact unit makes 4-channel stereo recording a "cinch" even where space is a factor. The same Akai robust mechanism for top rate performance and endurance. One Micron Gap Rec/Playback Head for amazing frequency response to 16,000 Hz

 

1-Micron Gap Head

Just what is a one-micron gap head? It's a head with a width of only one astounding micron. Until now two or four micron gap heads have been the standards for comparing tape recorders. However, Akai has pushed ahead and narrowed the head gap; thus narrowing the difference between tape recording results and actual sound.

The Akai perfected one-micron gap head has these distinctive advantages over heads with wider gaps:

A - Excellent Frequency Response even at low tape speed

B - Clear, high pitched sound can be regenerated as a frequency tone and recorded smoothly with a minimum of distortion.

Motor

The motor of model CR-80 SS is a condenser starting two-speed induction motor. The winding characteristics of this 2-8 pole motor provides tape-speed stability and minimizes distortion

 


 

Other features:

Public Address System - this unit can easily be converted into a P.A. System

Automatic Stop/Continuous Play

4/2 Channel Stereo Selector

Inputa and Phone Selector

Program Indicator Lamp

 


Specifications

Track System:  8-track, 4-channel /2-channel compatible stereo

Tape Speed:  3-3/4 ips

Wow and Flutter:  less than 0,25% rms

Equalization:  Correct equalization for playback of tapes recorded to NAB curve

Frequency Response:  30 to 16,000 Hz (±3 dB)

Distortion:  less than 2% (1000 Hz "0" VU)

Output Power:

Total Music Power :  40 W (10 W each channel) at 8 Ω

Continuous Power :  28 W (7 W each channel) at 8 Ω

Signal-to-Noise Ratio:  better than 47 dB

Erase Ratio:  better than 60 dB

Bias Frequency:  60 kHz

Heads:

Rec/Playback :  8-track, 4-channel stereo head

Erase :  8-track, 4-channel erase head

Motor:  2-speed induction motor

Fast Forward Time:  4-channel stereo, 230 seconds using a 300 ft cartridge tape (approx. 15 ips)

Recording Capacity:  30/60 min. 4-ch/2-ch stereo using a 300 ft cartridge tape

Output Jacks

Line (4) :  1,23 V("0" VU) / 100 Ω

Speaker (4) :  10 W / 8 Ω 

Phone (1) :  30 mV / 8 Ω

Input Jacks:

Mic (4) :  0,5 mV/5 k Ω

Line (4) :  50 mV/150 k Ω

DIN Jacks:  2 Input/Output DIN jacks:  0,4 V/10 mV (front/rear channels)

Semiconductors:  19 Transistors; 19 Diodes

Integrated Circuits:  4 Linear IC; 4 Power IC

Power Requirements:  120 V 60 Hz

Power Consumption:  75 W

Dimensions (W x H x D):  485 x 138 x 280 mm (19,4" x 5,5" x 11,2")

Weight:  12 kg (26 lbs)


 

Akai GXC-710D cassette deck

The GXC 710D is another front-load model , and very sophisticated it is, too.

The Double Action" eject and tape loading safety feature is completely foolproof. When you press the Eject button, the cassette envelope moves out from the front panel just like a drawer. The upper part is carefully positioned for easy tape loading and levers at either side of the cassette holder make sure the cassette can't be inserted upside down. It's easy it's simple. And it's safe.

The combination once again of Akai's GX head plus Dolby Noise reduction plus Akai's ADR system plus a new drive system gives the highest of hi-fi performance. Tape speed is perfectly stabilised. Wow/flutter is as low as 0,08% rms. What's more, with the switchable Multiplex Filter circuit to cut out the 19 kHz pilot signal during stereo broadcast recording through an FM receiver, you get a clear and undistorted frequency response range to 17,000 Hz.

The rest of the features you can almost tale for granted. But let's just remind you of them to make sure you know exactly how much the GXC 710D has to offer you.. Memory Rewind Peak Level Indicator. Tape Selector Switches (low noise, CrO₂, ferrichrome) Direct Function Change Controls . Mic/Line Input Selector for improved Signal-to-Noise Ratio . Automatic Stop with tape release. Pause Control Line Output Level Control.

The GXC 710D is, as we said a very sophisticated machine- in its styling , in its features and in its outstanding performance.

 


Specifications

Track System:  4-trak, 2-channel stereo

Tape Speed:  4,8 cm/s (1-7/8 ips

Wow and Flutter:  less than 0,08% WRMS

Frequency Response: 

Low Noise Tape :  30 to 14,000 Hz (±3 dB)

CrO₂ Tape :  30 to 16,000 Hz (±3 dB)

Fe-Cr  Tape :  30 - 17,000 Hz (±3 dB)

Distortion:  less than 1,5 % (1,000 Hz 0 VU)

Signal-to-Noise Ratio:  better than 50 dB (with Dolby; up to 60 dB , above 5 kHz)

Bias Frequency:  100 kHz

Erase Ratio:  better than 70 dB

Heads:  GX recording/playback head and erase head

Motor:  4-pole hysteresis synchronous outer-rotor motor

Fast Forward and Rewind Time:  80 sec C-60 cassette tape

Output Jack: 

Line :  0,775 V (0 VU) required load impedance; more than 10 k Ω

Phone :  30 mV/8 Ω

Input Jack:

Microphone :  0,3 mV/5 k Ω

Line :  70 mV/100 k Ω

DIN Jack : 

Output :  0,55 V

Input :  3 mV

Dimensions (W x H x D):  440 x 142 x 304 mm (17,3" x 5,6" x 12")

Weight:  8,8 kg (19,4 lbs)


 

Akai GXC-310D cassette deck

The GXC-310D takes great pride in its performance. For example, it has a closed loop double capstan drive system - a feature usually found only in very expensive cassette models. With this system, the recording/playback heads is positioned in the centre between two capstans and pinch rollers. This not only gives better head-to-tape contact but also maintains constant tape tension.

An integral part of this system is an anti-vibration hysteresis synchronous motor. The net result of this combination is outstanding tape travel stability, constant tape tension and speed, and an excellent wow/flutter specification of 0,07% RMS.

Like all Akai cassette machines, the GXC-310D features the Dolby NR system to reduce tape hiss to a virtually inaudible level, give a bigger frequency response and a better Signal-to-Noise Ratio. But it also features Akai's ADR (Automatic Distortion Reduction) system which varies the equalisation at high input levels to cut distortion and extend the dynamic range at high frequencies.

Its amny other features include a Peak Level indicator, Automatic Stop, Limiter switch, Mic/Line Input Selector for a wider dynamic margin and less noise, Pause Control, Output Level Control for perfect matching with any amplifier input, Tape Run indicator, Memory Rewind and Index Counter, direct function change controls and a bias and equalisation switch for low noise, CrO₂ or ferrichrome tape. Again, there's a specially designed perspex dust cover as an optional extra.

 


Specifications

Track System:  4-trak, 2-channel stereo

Tape Speed:  4,8 cm/s (1-7/8 ips

Wow and Flutter:  less than 0,07% WRMS

Frequency Response: 

Low Noise Tape :  30 to 14,000 Hz (±3 dB)

CrO₂ Tape :  30 to 16,000 Hz (±3 dB)

Fe-Cr Tape :  30 - 17,000 Hz (±3 dB)

Distortion:  less than 1,5 % (1,000 Hz 0 VU)

Signal-to-Noise Ratio:  better than 50 dB (with Dolby; up to 60 dB , above 5 kHz)

Bias Frequency:  100 kHz

Erase Ratio:  better than 70 dB

Heads:  GX recording/playback head and erase head

Motor:  4-pole hysteresis synchronous outer-rotor motor

Fast Forward and Rewind Time:  75 sec C-60 cassette tape

Output Jack: 

Line :  0,775 V (0 VU) required load impedance; more than 10 k Ω

Phone :  30 mV/8 Ω

Input Jack:

Microphone :  0,3 mV/5 k Ω

Line :  60 mV/100 k Ω

DIN Jack : 

Output :  0,4 V

Input :  2 mV

Dimensions (W x H x D):  440 x 142 x 300 mm (17,3" x 5,6" x 11,8")

Weight:  8,6 kg (18,9 lbs)


 

Akai 4000D tape deck

Three Head Stereo Tape Deck

A superb stereo tape deck enabling stereo fans to produce the ultimate in high fidelity recordings

High quality three head system embodying the latest techniques, featuring an exclusive one micron gap recording and playback heads plus erase head

All silicon transistorized pre-amplifier reduces hissing noise to a minimum

Strudy mechanism providing excelent durability

Fine oil-finished wooden cabinet matching furniture and / or stereo set

 

Outstanding Features

4-track stereo/monaural recording and playback. For playback, the 4000 D requires an external power amplifier and speakers

2 speeds - 3-3/4 and 7-1/2 ips

3 heads - One micron gap recording and playback heads plus erase head

All silicon trasistorized pre-amplifier

Shield type head for high Signal-to-Noise Ratio

Two lever system ensures dependable and durable sure operation

Track selector for simple selection between stereo and monaural

Sound on sound (by using an optional cord). Sound with sound

Automatic shut off, instant stop control

Tape cleaner

Tape speed equalizer

Tape lifter in fast forward and rewind operation

DIN Jack

Stereo headphone jack

3-digit index counter with reset button, 2 VU meters

Fine oil-finished wooden cabinet

Vertical and horizontal operation

Universal voltage selector (from 100 V to 240 V, 50/60 Hz)

 

Specifications

Recording System:  4 -track stereo- monaural system

Motor:  Induction motor

Semiconductors;  17 silicon transitors, 2 Diodes; 2 rectifiers

At 7-1/2 ips :  Frequency Response:  30 to 22,00 cps ±3 dB

At 3-3/4 ips :  30 to 16,000 cps ±3 dB

Distortion: within 2% 1,000 cps  0VU

Wow and Flutter:

At 7-1/2 ips :  less than 0,15% RMS

At 3-3/4 ips :  less than 0,20% RMS

Signal-to-Noise Ratio: better than 50 dB

Input Level:

Microphone:  better than 0,5 mV

Line :  better than 50 mV

Output Level:  0 VU (1,23 V RMS)

Equalization:  Correct equalization for playback of tapes recorded to the NARTS curve

Recording Level Indicator:  2 VU meters

Fast Forward and Rweind Time:  150 sec. Using 1,200 foot tape at 50 cycles. 120 sec. At 60 cycles

Max Recoding Time:

4 hours monaural recording at 3 -2/4 ips (1,200 foot recording tape)

2 hours stereo recording at 3-3/4 ips

Dimensions (W x H x D):  315 x 405 x 180 mm (12-3/8" x 15-7/8" x 7-1/2")

Weight:  11,5 kg (25,3 lbs)


 

Akai SW-150 speakers


 

Superb Hifi Stereo Sound Effect

Akai 3-way stereo speaker system with high and midrange level controls. SW-150 is design matached to high fidelity Akai stereo tape recorders. Enjoy perfect reproduction of pure sounds from exciting high notes, to mellow, vibrant low tones

 

Specifications

Speakers:

Low Frequency:  12" Woofer

Mid Frequency:  5,25" Midrange

High Frequency:  2" Tweeter (Horn Type)

Impedance:  8 ohms

Max. Power Input:  40 W

Frequency Response:  40 - 20,000 Hz

Dimensions :  25-1/4" x 16" x 11-3/4"

Weight:  35,2 lbs (each)

Akai CR-80D 8-track tape deck

8-Track Stereo Cartridge Tape Deck with a One-Micron GAP head

Outstanding Features

One-micron Gap head for extra wide Frequency Response

Fast Forward

Solid State pre-amplifier with 2 ICs

Universal Voltage Selector

DIN Jack and Stereo headphone Jack

Recording indicator lamp

Two VU meters

Automatic Stop control

Optional Two matching high compliance speakers

 

Akai's one-micron gap head is responsible for an amazingly important difference in tape recording. It's the difference between ordinary performance and the highest possible quality perfection.

Just what is a one-micron gap head? It's a head with a width of only one astounding micron. Until now two or four micron gap heads have been the standards for comparing tape recorders. However, Akai has pushed ahead and narrowed the head gap; thus narrowing the difference between tape recording results and actual sound.

The Akai perfected one-micron gap head has these distinctive advantages over heads with wider gaps:

Excellent frequency response even at low tape speed

Clesr, high pitched sound can be regenerated as a frequency tone and recorded smoothly with a minimum of distortion

 

8 -track Cartridge recording System

Model Capture Ratio-80D employs the 8-track stereo system. The tape has a total of 8 tracks, two of which are used at a time for stereo recording or playback. There are four choices of channels. At the end of the tape, the next channel is automatically positioned for recording or playback. Recording or playback time for one channel is 15 minutes (one continuous hour on 4 channels using a 300 ft. Tape). Desired channel can easily be selected by operating the Cartridge Program Selector Button.

 


Specifications

Tape Speed: 3-3/4 ips

Wow and Flutter:  less than 0,25% rms

Frequency Response:  50 to 16,000 Hz ±3 dB

Signal-to-Noise Ratio:  better than 47 dB

Input Level

Microphone jack :  better than 0,5 mV

Line Jack :  better than 50 mV

Output Level:  0 VU (1,23 V rms)

Equalization:  Correct equalization for playback of tape recorded to the NAB curve

Recording Bias Frequency:  65 kHz

Recording Level Indicator:  Two VU Meters

Recording System:  8 Track Stereo

Heads:  Rec/Playback and Erase heads

Fasy Forward Time:  230 sec. 300 ft. Cartridge tape

Recording Capacity: one hour stereo with 300 ft. Cartridge tape

Motor:  two-speed induction motor

Semiconductors:  12 Transistors; 2 ICs; 12 Diodes

Voltage:  AC 100V to 240 V , 50/60 Hz (6 voltage selections)

Power Consumption:  60 W

Dimensions345 x 250 x 135 mm (12-1/2" x 10" x 5-1/2")

Weight:  7,9 kg (17,4 lbs)


 

Akai CS-50D cassette tape deck

Super Cassette Stereo Tape Deck

Akai has done it again. The CS-50 with "Invert-O-Matic" is the first Cassette Tape Deck in the world capable of Reverse Recording and Playback

Outstanding Features

Automatic and manual reverse "invert-O-Matic"

Automatic Stop/Automatic Shut-Off (cuts off power of unit)

Continue Reverse

Push Button Control Panel (Record, rewind, Stop, Play, Fast Forward)

Slide Type Volume Controls

"See through" window for determining tape position

Two Integrated Circuits (IC)

Two VU Meters

Index Counter with Reset Button

Universal Voltage Selector and Cycle Conversion Switches

Microphone, DIN, stereo headphone jacks and Line input and output Pin jacks

 


Invert-O-Matic

Akai engineers have investigated and developed ways of perfecting all of the weak points in cassette recording and playback. These improvements made from every angle have been concentrated in the most "up-to-date design" to bring you the World's First top rate performance Akai Cassette Invert-O-Matic Tape Deck

The Invert-O-Matic is an epoch-making automatic reversing system. By the mere pressing of a button, the cassette will reverse itself automatically inside the tape deck. This system will not only do away with the trouble of setting the cassette by hand in future, but the new tape movement mechanism is simplified and because of the stability mechanism and high performance, this new device produces amazingly true hi-fi sound.

By depressing the Auto Button during playback, continuous revers is actuated (at the end of the tape, the cassette will automatically invert and playback will continue for as long as is desired). When the Manual Revers Button is depressed, instant manual reverse is effected.

Akai is the World's First to succeed in developing automatic and manual reverse applicable during recording. With this new mechanism, a C--120 cassette tape will accommodate two hours of uninterrupted recording.

 

A Wonderful Combination

The CS-50D employs the very simplest and easiest loading method. Just insert cassette into slot provided. For removal of cassette, simply press the Cassette Eject Button

The CS-50D employs a 4-Track Stereo recording and Playback System.

For playback, and external power amplifier and a pair of hi-fi speakers are required Akai Models AA-6300 amplifier and SW-125 speakers, are highly recommended.

 


Specifications

Tape Speed:  1-7/8 ips

Tape Speed Deviation:  within ±2%

Wow and Flutter:  less than 0,2% rms

Frequency Response:  30 - 16,000 Hz (±3 dB)

Signal-to-Noise Ratio:  better than 45 dB RMS

Distortion:  within 2% (1,000 Hz "0" VU rec)

Erase ratio:  less than -70 dB

Recorder Bias Frequency:  100 kHz

Recording level Indicator:  2 VU meters

Recording/Playback Head:

Type :  In-Line 4-track Stereo

Impedance:  1,100 Ω  at 1 kHz

Erase head: 

Type :  In-Line 4-track Stereo

Impedance:  730 Ω  at 100 kHz

Recording System:  AC Bias system

F.F wd and rewind Time:  75 sec. C-60 cassette type

Line Output Level:  1,3 V ("0" VU) for tape recorded at "0" VU

Line Output Impedance:  10 k Ω

DIN Output Level:  0,4 V

Stereo Headphone Impedance:  8 Ω

Line Input Impedance:  220 k Ω

DIN Input Level/Impedance:  3 mV/ 25 k Ω

Mic Input Level/Impedance:  0,2 mV/4,7 k Ω

Monitor System:  Stereo Headphones

Recording Capacity:  2 hrs. Stereo recording using C-120 cassette tape

Motor:  Outer-rotor synchronous motor

Semiconductors:  11 Silicon Transistors; 8 Diodes; 2 ICs

Power Requirements:  100 V to 240 V AC 50/60 Hz

Power Consumption:  25 W

Dimensions (W x H x D):  375 x 160 x 287 mm(15" x 6-1/4" x 11-1/4")

Weight:  7,84 kg (15,8 lbs)


 

Akai CR-83D 8-track tape deck

Cartridge Stereo Tape Deck

Stop mode selector facilitates automatic stop or continuous play - Set for continuous play or effect automatic stop after each channel or after the entire tape has been recorded or played back. Automatic Stop Indicator Lamp.

Elapsed time counter with reset button for easy tape counting - Facilitates easy tape counting and enables the operator to determine how much time remains on a given channel. Permits efficient utilization of the entire tape.

Head cleaning minimized with dust-free head - The combination Rec-Power Bandwidth/Erase head employed in the Capture Ratio-83D is coated with a special metallic substance for a super smooth finish to which dust will not adhere. Thus, head cleaning is minimized and longer head life assured.

Fast forward function - As an added convenience, this model features  Fast Forward for rapid selection of tape programs.

 


Pause control - A Pause Key enables temporary suspension of tape travel during operating modes. Especially convenient for tape editing and for fine adjustment of recording level prior to effecting recording mode.

Manual program elector and channel indicator lamps - Change channels at will with a manual Program Selector. Channel Indicator Lamps show which channel is being used.

Recording safety feature - To prevent inadvertent recording by mistake, the Rec Key cannot be depressed while a tape is set. Recording mode can be effected only by simultaneously depressing the Rec Key and loading a tape. Recording Indicator Lamp.

Microphone and line input jacks - Recording can be accomplished from line or microphone input jacks

Expanded VU meter scales -  Expanded VU Meter Scales enable the operator to more accurately determine recording and playback levels.

Headphone Jack - Facilitates monitoring or private headphone listening.

 


Specifications

Track System:  8-track 2-channel stereo system

Tape Speed:  3-3/4 ips

Wow and Flutter:  less than 0,15% WRMS

Frequency Response:  60 Hz to 14,000 Hz (±3 dB) using Low Noise tape

Distortion:  less than 2% (1,000 Hz "0" VU)

Signal-to-Noise Ratio:  better than 48 dB (measured via tape with peak recording level of +6 VU)

Bias Frequency:  85 kHz

Head: Combination Rec-Power Bandwidth / Erase Head

Motor:  DC Motor

Fast Fwd. Time:  4 min, using a 200 ft tape

Output Jacks

Line :  0,775 V ("0" VU) / Required load impedance more than 20 k Ω

Phone :  30 mV/8 Ω

Input Jacks

Microphone :  0,7 mV / 680 k Ω

Semiconductors:  22 Transistors; 21 Diodes

Power Requirements:  120 V, 60 Hz; 220 V, 50 Hz; or 110 - 120 V, 220 - 240 V, 50/60 Hz

Dimensions (W x H x D):  420 x 110 x 245 mm

Weight:  5,3 kg (11,7 lbs)


 

Akai X-360 reel-to-reel recorder

Professional Stereo Tape Recorder

The X360 provides you Professional Results in its operation because of these exclusive Akai features:

Magnetic Brake

3-Speed Motor for Capstan Drive

Cross-Fzield Head

Automatic Volume Control (Comput-O-Matic)

Automatic Dust Minder

Automatic Continuous Reverse (Reverse-O-Matic)

Sensing Tape Reverse

4-track stereo/monaural recording/playback

4 speeds; 15; 7-1/2; 3-3/4 and 1-7/8 ips

3 Motors - Hysteresis synchronous 3-speed motor for capstan drive. Two G-pole eddy current out-rotor motors for supply and take up reel drive

4 Heads - Erase; Playback; Record and Biass heads

50 W Solid state amplifier

Shield type head for high Signal-to-Noise Ratio

Tape shifter in fast forward and rewind operation

Electrical track selection

Automatic Stop, Automatic Shut-off

Automatic pinch wheel release

100 KC biased for recording of FM multiplex

4-digit index counter with reset button

Bass and treble controls

VU meters, Tape cleaner

Stereo headphone jack

DIN jack (with selector for High/Low input

AC outlet

Finely oil-finished wooden cabinet

Vertical and horizontal operation

 


Specifications

Tape Speed:  1-7/8; 3-3/4; 7-1/2; 15 ips

Wow and Flutter

7-1/2 ips :  less than 0,04% RMS

3-3/4 ips :  less than 0,07% RMS

1-7/8 ips :  less than 0,16% RMS

Frequency Response:  30 to 18,000 ps at 3-3/4 ips

Distortion:  within 1,5% 1,000 cps  0VU at 7-1/2 ips

Signal-to-Noise Ratio:  better than 50 dB

Input Level:

Microphone :  more than 0,5 mV

Line :  more than 50 mV

DIN :  more than 5 mV ( LOW), 50 mV (high)

Power Output: 

20 W maximum per each channel at Undistorted Power, total 40 W

25 W maximum per each channel at Music Power , total 50 W

Equalization:  Correct equalization for playback of tapes recorded to the NARTO curve

Recording Bias Frequency:  100 KC

Recording Level Indicator:  VU meter x 2

Recording System:  4-track stereo/monaural, crossfield bias system

Fast Forward and Rewind Time:  75 sec using 1,200 feet tape at 50 cycles; 60 sec at 60 cycles

Head:  4 heads for Erase, Playback and record and bias

Motor: 3 motors

For capstan drive - Hysteresis synchronous 3-speed motor

For supply and take-up reel drive - Two 6-pole eddy current out rotor motors

Speaker:  2 x 5" speaker

Transistors:  60

Power Requirements:  AC 100 - 240 V 50/60 Hz

Power Consumption:  70 - 200 VA

Dimensions (W x H x D): 406 x 444 x 254 mm (16" x 17,5" x 10")

Weight:  28 kg (61,6 lbs)


 

Akai AA-6600 receiver

Solid State AM/FM Multiplex Stereo Tuner Amplifier

Outstanding Features

FET (Field Effect Transistor) front-end for extra FM sensitivity

IC (Integrated Circuit) in IF stages for high selectivity

120 W (60 W/ 60 W) music power

FM-AM signal strength meter and FM center tuning master for perfect tuning

Automatic FM stereo/monaural switching; FM reception is automatically switched from mono to stereo or from stereo to mono

Speaker system selector for handling one or two stereo speaker systems individually or simultaneously (System A, System B, Systems A+B and Off)

Tape monitor Switch, Stereo mode switch

Bass, Treble and Loudness control

Low and High filter

Stereo headphone jack, DIN jack

 


Specifications

Amplifier Section

Power Output

Music Power (IHF):

120 W (60 W/60 W) at 4 Ω 

100 W (50 W/50 W0 at 8 Ω 

Continuous Power:75 W (37,5 W/37,5 W ) at 8 Ω

Total Harmonic Distortion :   0,8% at rated output

Power bandwidt (IHF):  20 - 30.000 Hz at 8 Ω

Frequency Response (at Normal Listening Level)

Power Amplifier :  20 - 50,000 Hz -3 dB

Aux :  20 - 50,000 Hz -3 dB

Input Sensitivity (for rated output):

Phono :  3 mV

Aux :  200 mV

Tape Monitor :  200 mV

Recording Output

Pin Jack :  200 mV

DIN :  30 mV

Hum and Noise (below rated output):

Volume Minimum :  better than 80 dB

Phono :  better than 65 dB

Aux :  better than 70 dB

Channel Separation (at rated output)

Phono :  better than 50 dB

Aux :  better than 50 dB

Output Impedance:  4 - 16 Ω

Equalizer Phono :  RIAA

Tone Controls

Bass :  ±10 dB at 50 Hz

Treble :  ±10 at 10 kHz

Loudness :  +6 dB at 100 Hz, +3 dB at 10 kHz (volume control at -30 dB)

Low Filter:  -8 dB at 50 Hz

High Filter:  -6 dB at 10 kHz

Mode Switch:  Stereo/Mono

FM Tuner Section

Frequency Range:  88 - 108 MHz

Sensitivity:  2 µV (IHF)

T.H.D.  : less than 0,8%

Signal-to-Noise Ratio:  better than60 dB

Selectivity:  better than 50 dB at 98 MHz

Capture Ratio:  2 dB (IHF)

Image Frequency Rejection:  better than 60 dB at 98 MHz

IF Rejection:  better than 90 dB at 98 MHz

FM Stereo Separation:  better than 35 dB at 1 kHz

Spurious Response Rejection:  better than 60 dB at 98 MHz

Spurious Radiation:  less than 34 dB

Antenna Input/Impedance:  300 Ω  (balanced) 75 (unbalanced)

AM Tuner Section

Frequency Range:  535 -1,606 kHz

Sensitivity (IHF):  20 µV at 1 MHz

Image Frequency Rejection:  better than 50 dB at 1 MHz

Selectivity:  better than 20 dB at 1 MHz

Semiconductors: 

Transistors / FET / ICs :  Tr. 33; FET 1; IC 1

Diodes :  ZD 1; Di 22

Varistors :  2

Power Requirements:  100 - 240 Volts 50/60 Hz

Power Consumption:  150 W (max)

Dimensions (W x H x D):  445 x 133 x 340 mm (17-1/2" x 5-1/4" x 13-3/8")

Weight:  11 kg (24,4 lbs)