SQ Quadraphonic Test Record, SQT-1100

$ 49

$ 49 Sold For

Mar 17, 2011 Sold Date

Mar 10, 2011 Start Date

1 Number Of Bids

USA Country Of Seller

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Description

This is the CBS Laboratories Test Record, SQT-1100, for testing, aligning, and setting up your SQ system. It has a variety of bands for carrying out quantitative measurements as well as signals for acoustical adjustments in your listening area.

Side A contains:

Reference signal tone 1kz, mono, for pre-amp balancing

Sweep signals, 40 to 20 kHz, for all channels: Left Front, Right Front, Right Back, Left Back. Use these to check the frequency response of the pick-up, pre-amp and the SQ decoder.

Pick-up Phase measurement signals, spot frequencies. Use these signals for checking the left to right pahse of your pick-up. Use an oscilloscope or phase meter.

Channel Identification Signals (pink noise ): Center Front, Right Front, Center Right, Right Back, Center Back, Left Back, Center Left, Left Front, Center Front. These are great for adjusting the relative levels in your quad listening room for a balanced situation.

Side B contains signals for testing the dynamics of your SQ quad decoder.

The AGC tones permit examining the onset of "logic" in your SQ decoder. The ON-OFF tones allow you to check the reaction time for the logic for both single channels as well as switching between channels.

There is a band for adjusting the reference levels, 0 dB at 1 kHz, for all the SQ positions, Center Front, Right Front, Center Right, Right Back, Center Back, Left Back, Center Left, Left Front, Center Front.

These Test Records were manufactured by CBS Laboratories. I have many of these records taken from the Labs, however only one has the final cover shown in the photo. So, I am selling them with a blank cover, (no printing). All are new.

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