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

Aiwa AD-3600

Aiwa AD-3600U
The advantages of 3-head performance needn't represent an extravagance to your system budget. Here's quality 3-head model with an impressive array of convenient features.

New DX record/Pb combination head
Designed for the more rigid demands of metal tape, the new DX head consruction departs radicaslly from traditional concepts. A combination of high-density sendust and ultra-hard permalloy, it features a pressure-formed 6-layer laminated core uniquely designed to resist uneven wear of the tape contact surfaces. Gap width is set at 4 microns for the record head, 1 micron for playback, giving each the ideal capability for wider frequency response. Naturally the AD-3600 features a monitor facility for comparasion of input signalswith the just-completed recording - a sureadvantage over 2-head models

New Auto Demagnetizing System (A.D.M.S)
Mo more awkward treatments with bulky head demagnetizers; the AD-3600 incorporates a sophisticated circuit which effectively removes magnetic saturation in the record/playback head each time the unit's power is turned on. ADMS ensures that recordings need never be marred by high-frequency losses or noise generated by a magnetized head. Completely safe, even with a cassette loaded in the unit.
Operation time: approx. 1,5 seconds.

Dolby HX (Headroom Extension) system
This new system from Dolby laboratories is incorporated into the conventional noise reduction circuit but has the separate role of improving high frequency response of demanding program material. Dolby HX functions by altering the deck's bias and equalization levels as needed to maintain linearity of the signals. As it operates during recording only, playback can be made in the ordinary Dolby-ON position, thus making tapes recorded with the HX system completely compatible with decks not equipped with HX circuitry.

Plus Features:
Feather-touch IC logic controls
Optical peak LED display (-20 to +20 dB)
Automatic tape slack canceller
Rc-mute edit facility
Bias fine adjust control for LH tapes
Timer standby record and playback operation 
Type:  single compact cassette deck
Track Type:  4-track, 2-channel stereo
Motor:  24-pole controlled servo motor and 1 DC servo motor
Tape Speed:  4.8 cm/s
FF& Rewind Time:  70 sec (C-60)
Heads:  1 x sendust record/playback, 1 x ferrite erase
Tape Type:  Normal, CrO₂, Metal
Noise Reduction:  Dolby B, HX
Frequency Response:
Normal :  20 Hz to 17,000 Hz (20-14,000 Hz DIN)
CrO₂ :  20 Hz to 19,000 Hz (20-17,000 Hz DIN)
Metal :  20 Hz to 20 kHz  (20-18,000 Hz DIN)
Signal-to-Noise Ratio:  68 dB  (Metal, Dolby B)
Wow and Flutter:  less than 0.029% (WRMS)
Line :  50 mV (50 k Ω )
Microphone :  0.3 mV (200 Ω  - 10 k Ω )
DIN :  0,1 mV (3 k Ω )
Line :  0.55V (50 k Ω)
DIN :  0,55 mV (50 k Ω)
Hedaphones :  0,8 mV (8 Ω)
Power Supply:  AC 120V/220V/240V 50/60 Hz
Power Consumption:  22 W
Dimensions (W x H x D):  420 x 109 x 285 mm
Weight:  5.3 kg

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