Gear Hunter

API SR24

Description

Dual channel 4 band equalizer modelled after the classic APSI model 562 EQ

The SR24 is a two channel, four band equalizer in a two rack-space chassis. With a dedicated knob and/or switch for each control function, the SR24 is easy to use; by utilizing continuously-variable controls for both the frequency and boost/cut, the SR24 can be very precise in applying equalization to the selected audio material.

The SR24 circuit design is deeply rooted in API's history. From the late 1970's to the early 1980's, an audio company called "APSI" manufactured consoles and equalizers. Their 562 module was a 4-band, fully parametric equalizer which was designed by APSI and sold through API. Over the last several decades, these EQ modules remained a favorite among many studio engineers, but have become increasingly difficult to find. The SR24 is a faithfully re-engineered version of the original 562, offering the user 2 channels of classic analog EQ in one rackmount unit.

• 4 bands of equalization modelled after the classic APSI model 562 EQ


• Each band offers continuously variable control of frequency and gain, using separate knobs


• 12 dB of boost/cut per band


• All 4 bands are peak/dipping parametric configuration


• Custom transformer balanced output


• Fully balanced ¼" and XLR input and output


• Massive headroom +24 dB clip level

Inputs: Balanced XLR and 1/4" parallel jacks
Outputs: Transformer Balanced XLR and 1/4" parallel jacks (All measurements with 600 Ohm output load)
Input Impedance: 12k Ohms
Output Impedance: 300 Ohms Transformer Balanced
Bandwidth: +/- 0.5dB, 20Hz - 20kHz
THD+N @ 1kHz, +4dBu: 0.01%
Maximum Level: +23dBu
Signal-to-Noise Ratio: -100dB
EQ Bands: 4 bands, all +/-12dB Peak/Dip type
Lo: 20Hz - 200Hz
Lo-Mid: 100Hz - 1kHz
Hi-Mid: 500Hz - 5kHz
Hi: 2kHz - 20kHz
Power Consumption: 10 Watts
Dimensions: 2U EIA 19" Rack
Size: 19" x 3.5" x 10" Deep
Weight: 13 lbs