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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 GX-265D tape deck


Stereo Tape Deck

AC Servo Motor Direct Capstan Drive System

6 Head system Automatic and manual Reverse Recording and Playback

One each GX forward recording, GX reverse recording, GX forward playback, GX reverse playback, forward erase, and reverse erase head make up the superior GX Head reverse recording and Playback system of this model. The quality and special process of the GX Head materials result in a wider dynamic range, better high frequency characteristics and tone quality and longer lasting performance. Manual Reverse Button and Automatic Sensing Tape Reverse completely eliminate the necessity of inverting reels by hand.

 

Symmetrical Head Block Layout for identical performance in both directions.

The arrangement of the head block is completely symmetrical in relation to the center capstan. The short and equi-distant tape path within the head block and between heads and reel tables on both sides assure identical performance in both directions. Tension Arms on both the take-up and supply reel sides provide perfect tape tension, also contributing to operating stability.

AC Servo Motor for capstan drive, Wow and Flutter reduced to 0,06.

The GX-265D employs a 3 motor drive system with a new AC Servo Motor for direct capstan drive, Rubber belts, flywheels, etc. are eliminated for reduced interference. This coupled with the center capstan system of this model reduces wow and flutter to an amazing 0,06%.

 

Microphone/Line Mixing

Individual Microphone and Line Input Level Controls and a built-in mic-line mixing circuit facilitate easy sound mixing from two separate sources.

Quick Pause Control

Depress the pause Switch to immediately suspend reel movement. When Pause mode is effected, the pinch wheel separates from the capstan by only 0,5 mm for a quick and smooth start when released. Especially convenient for editing tape.

Dual Monitoring

Tape/Source Monitor Switch enables comparison of source signals with just records signals for more professional recording results.

Automatic Stop

The Tension Arm/Stop lever drops at the end of the tape, activating an automatic stop mechanism which completely stops reel movement for operating safety.

Individual Track Selectors for Monaural or Stereo Preformance

Recording mode can be effected using individual left or right channel selectors or both channels simultaneously. A Recording indicator Lamp lights to confirm recording mode.

Output Level Control Enables Connection with any Amplifier

An Output Level Control facilitates adjustment of output level to correspond with your amplifier input.

Tape Selector Switch

A Tape Selector Switch facilitates the use of Low Noise or Wide Range tape. While high performance low noise tape is standard for this machine, the ability to use wide range tape further extends high range frequency response.

Feather Touch Controls for Smooth and Easy Mode Selection

VU Meter Scales Extended to +5 VU for Precise level Indication.

 


Specifications

Track System:  4-track, 2-channel stereo/monaural system

Reel Capacity:  up to 7" reel

Tape Speed:  7-1/2 and 3-3/4 ips (±0,7%)

Wow and Flutter:

At 7-1/2 ips :  less than 0,06% RMS

At 3-3/4 ips :  less than 0,09% RMS

Frequency Response (using Akai LN-150-7 Tape)

At 7-1/2 ips :  30 Hz to 25,000 Hz (±3 dB)

At 3-3/4 ips :  30 Hz to 19,000 Hz (±3 dB)

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

Signal-to-Noise Ratio better than56 dB (measured via tape with peak recording level of +6 VU)

Erase Ratio:  better than 70 dB

Bias Frequency:  100 kHz

Heads :  6 - One each GX forward recording, GX reverse recording, GX forward playback, GX reverse playback, forward erase, and reverse erase head

Motors:  3 - One AC Servo motor for capstan drive, two eddy current motors for reel drive

Fast Forward and Rewind Time:  90 seconds using a 1200 ft tape at 60 Hz

Output Jacks

Line :  2x 0,775 V (0 VU) Required load impedance more than 20 k

Phone : 1x 30 mV/8

Input Jacks

Microphone :  2x 0,25 mV/5 k

Line :  2x 70 mV/150 k

DIN Jack:  0,5 V/3 mV

Semiconductors:  38 Transistors; 26 Diodes

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

Power Consumption:  80 W

Dimensions (W x H x D):  441 x 404 x 207 mm (7,4" x 15,9" x 8,2")

Weight:  16,6 kg (36,5 lbs)

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