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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





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)


 

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