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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 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)


 

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