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Phase Linear 4000

Audio Control Console (1976)

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Phase Linear 4000


Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.25%

Gain: 65dB (MM), 15dB (line)

Signal to noise ratio: 72dB (MM), 83dB (line)

Semiconductors: 45 x transistors, 9 x IC, 57 x diodes, 2 x zener regulators, 2 x LED

Dimensions: 19 x 7 x 10 inches

Weight: 18lbs



re: 4000

I have bought a FL 4000 in 06-1976 for $560.
Few months after I ordered a Service Mannual which I will upload. Over time I have done some repairments as cleaning contacts for the circuit boards, changed some electrolytic capacitors and made a few modifications.

Lately I have observed that the Autocorrelator function don't work as it should and soon I will troubleshoot. Also I will change the rest of the electrolytic capacitors.


re: 4000

Looking for a manual/schematic for a 4000 series II.


re: 4000

Does anyone have pages 18 and 20 of this manual? Thank you

re: 4000

anybody have page 30 of the service manual?

re: 4000

This manual is for the older serial numbers made by carver and skinner. Boards are different on newer 4000 made by carver.

4000 Preamp

Thank you. What an amazing site.

Phase Linear 4000 series II Pre amplifier

Are there any schematic diagram available for this per-amplifier? If so can anyone up load this schematic?

This website is not affiliated with or sponsored by Phase Linear. To purchase 4000 spares or accessories, please contact the company via their website or visit an authorised retailer.