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musical instrument details
White Instrument 4004 Equalizer 24 Band PASSIVE Filter Set - Pair/Stereo Preamp
Estimated price for orientation: 600 $
Category: Vintage Pro Audio Equipment
Class:
Description
WHITE INSTRUMENT 4004 24 Band Passive Precision Filter Set - Pair Passive cut-only with buffer amplifier Okay this is an incredible score. Here is a pair of White cut-only filters. It has custom made John Curl – Jensen preamp / two channel (stereo) line driver. The filters are the model #4004 and are cut only which is very important with respect to phase response and time smear distortion. I had these configured especially and used them on all GD shows during the time leading up to the Ultrasound days. There was a period when I used Clairs, Showco and FM rental equipment and I carried these as the main house EQ. John Curl designed and built the preamp which was also the line driver. It uses handpicked Jensen discrete op-amps and runs on 24 volts rails. It also has Jensen transformers. It can do +30 d.b. into less than 30 ohms (it can drive long lines cleanly). A pair of external power supplies included. Even by today’s standards this is extreme quality sound. It is all mounted in an original Hard Truckers rack case. This is truly a kick ass piece of equipment as well as a true audio piece of history. While I guaranty these work perfectly I only sell all my stuff as-is due to some who take advantage of honest people.
Description
WHITE INSTRUMENT 4004 24 Band Passive Precision Filter Set - Pair Passive cut-only with buffer amplifier Okay this is an incredible score. Here is a pair of White cut-only filters. It has custom made John Curl – Jensen preamp / two channel (stereo) line driver. The filters are the model #4004 and are cut only which is very important with respect to phase response and time smear distortion. I had these configured especially and used them on all GD shows during the time leading up to the Ultrasound days. There was a period when I used Clairs, Showco and FM rental equipment and I carried these as the main house EQ. John Curl designed and built the preamp which was also the line driver. It uses handpicked Jensen discrete op-amps and runs on 24 volts rails. It also has Jensen transformers. It can do +30 d.b. into less than 30 ohms (it can drive long lines cleanly). A pair of external power supplies included. Even by today’s standards this is extreme quality sound. It is all mounted in an original Hard Truckers rack case. This is truly a kick ass piece of equipment as well as a true audio piece of history. While I guaranty these work perfectly I only sell all my stuff as-is due to some who take advantage of honest people.