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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





dbx 1BX

1BX

Like its 3BX and 2BX counterparts, the 1BX can increaste the dynamic range of music from records, tapes and radio broadcasts by a factor of up to 50%. Its RMS level detector incorporates an infrasonic filter to prevent mistracking caused by turntable rumble or record warp. Ten LED's monitor upward and downward expansion and, as with the 3BX and 2BX, a transition level is provided to select the level above which the music signal is upward expanded and below which it is downward expanded. because of its less complex circuitry, the 1BX is priced so anyone can affard the benefits of increased dynamic range. The1BX provides a tape monitor loop to replace the one used on your receiver or preamp.

Specifications

Expansion Ratio: Continuously adjustable from 1.0 to 1.5 (0 to 50% increase)linear in decibels

Dynamic Range: 100 dB (peak signal to weighted background noise)

Input Impedance: 50 kohms

Input level: 300 mV nominal

Input level: 7 V RMS maximum

Output Impedance: 100 ohms (designed to drive 5 kohm or greater)

Output Level: 6 V RMS (max. 20 Hz - 20 kHz)

Frequency Response: 20 Hz - 20 kHz ±0,5 dB at 1,0 expansion

Equivalent Input Noise: -85 dBV (unweighted, 20 kHz bandwidth, referenced to 1 V)

Total harmonic Distortion: 0,1%, typical at 1.0 expansion 20 Hz to 20 kHz

IM Distortion: 0,15% typical

Power Line Requirement: 117 V AC, 50 - 60 Hz

Power Line Consumption: 10 W

Dimensions (W x H x D): 11" x 3¾" x 10¼" (27,8 x 9,5 x 26,0 cm)

Weight (shipping): 4,5 lbs (2 kg)

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