Dynaco SE-10 Stereo Equalizer


The SE-10 Equalizer is a unique Dynaco design ten band equalizer which provides creative sonic tailoring without coloration. Slide controls provide a range of plus and minus 12 dB at octave intervals, with band centers from 30 Hz to 15 KHz, and independent gain controls for each channel. Because of the high input and output acceptance levels before distortion rises, it is not essential to accurately adjust for unity gain in the SE-10. Three stereo inputs and outputs are provided, two line level and one tape. Inserted in the E.P.L. loop of the PAT-5, three monitorable tape inputs effectively result. The circuitry includes an IC regulated power supply, a three transistor pop suppression circuit, high quality capacitors, optimized inductors, and a bypass mode. Virtually all circuitry is contained on a single printed wiring assembly, with the exception of the controls, connectors, and transformer. It appears that only the late NuSilver faceplate was used on the SE-10, matching the later PAT-5 and PAT-5 Bi-Fet preamplifiers.


Slide Controls at zero, 2 volts rms output, into 10K ohm load paralleled with 1000 pF.

Equalizer Range: ±12 dB at octave intervals from 30 Hz to 15 KHz

Maximum Output: 8 volts

Total Harmonic Distortion: 0.04% (typically less than 0.01%)

Intermodulation Distortion: 0.02% (typically less than 0.005%)

Frequency Response: ±1 dB, 10 Hz to 35 KHz.

Gain: -12 dB to +6 dB

Hum and Noise: 85 dB below 3 volts output (10 Hz to 80 KHz)

Input Impedance: 50k ohms

Output Impedance: 600 ohms

Inputs: Tape Monitor, Line 1, Line 2

Outputs: Tape Out (same as Line 1 input), Line 1, Line 2

Semiconductor complement: 8 transistors; 2 diodes.

Dimensions: 13-1/2" wide by 4-1/4" high by 9" deep.

Shipping Weight: 10 lbs.

Power Consumption: 5 watts.

Designed by:

Wade Burns

Year Introduced:



Dyna's foray into the graphic equalizer market; 10 bands for each channel, with adjustable channel gain and dual tape monitor switches.

This page created and maintained by Greg Dunn.
Copyright © 2000 Greg Dunn