The LC-style passive equalization circuitry is based on the classic designs that are still the best-sounding way to achieve high-quality tonal control.

The input is line-level, transformer balanced-bridging. An active vacuum tube input section has adjustable gain to accomodate input signals as low as -10 dBm. The input transformer is made by Jensen. The output stage utilizes the same custom Jensen transformer used on the VT-1/VT-2 mic preamps.

All controls are stepped for precise repeatability and uniform matching between units. High-quality rotary switches are used with 1% metal-film resistors. All of the audio capacitors are polystyrene or polypropylene. The inductors are custom-made for us by Jensen Transformers Inc.

The equalizer is constructed of heavy-guage aluminum, with a a 3RU (5.25 inch), 1/4-inch thick front panel, finished in D.W. Fearn red. It matches the VT-1/VT-2 series of mic preamps in appearance and construction.

SPECIFICATIONS

(All controls are independent and can be used in any combination)

• Low Cut at 30, 40, 100, or 400 Hz, 0 to -18 dB shelving in 2 dB steps
• Low Boost at 20, 40, 80, or 140 Hz, 0 to 12 dB shelving in 2 dB steps
• Mid Cut at 200, 300, 400, 500, 600, or 700 Hz, 0 to -30 dB in 3 dB steps
• High Boost at 2, 3, 4, 5, 8, 10, 12, or 16 kHz, 0 to 12 dB in 2 dB steps
• High Bandwidth Q of 0.6, 0.8, 1.0, 1.4, or 1.7
• High Frequency Cut at 1.5, 3.5, 8, or 20 kHz, 0 to -14 dB shelving in 2 dB steps
• Gain adjustable from -9 to +9 dB, referenced to +4 dBm, in 3 dB steps
• Frequency response: +/- 0.2 dB 20 Hz to 20 kHz
• THD: less than 0.20%
• Noise: less than -90 dBm

Back to top