OVERVIEW
This is a Class A, 4 band Equalisers which is in an 8 3/4 inch size module
case. It has a single sensitivity switch which is used for Mic and Line
input sensitivity adjustment, and Dual concentric controls for frequency
select and Boost/cut.
It has shelving curves only on the HF and LF sections.
It uses a single PCB construction and has Transformer balanced Input
and Outputs.
Generally this module is purchased by Clients who want a really good,
clean Mic pre and the equaliser section is to them of secondary importance.
Used largely for Drums and bass by these clients.
Fitted with 18 way Amphenol connector.
SPECIFICATIONS
INPUTS
- Sensitivity Range
Single sensitivity switch selects either microphone input from -80dBm to
-20dBm in steps of 5dB or line input from -20dBm to +1-dBm in steps of
5dB
- Input Impedance (transformer balanced)
Mic: 1200ohm Line: 10kohm
OUTPUTS
- Output Impedance (at 1kHz)
(Transformer balanced)<75ohm
Maximum Output >+26dBm into 600ohm
EQUALISER
- HF controls
4 switched frequencies: 4K, 8K, 10K, 15K. Plus peak/shelving switch with
continuously variable boost/cut max +/-16dB
- HI-MID controls
6 switched frequencies: 0.36K, 0.7K, 1.6K, 3.2K, 4.8K, 7.2K. with continuously
variable boost/cut max +/-16dB
- LO-MID controls
6 switched frequencies: 220Hz, 390, 700, 920, 1.3K, 2.4K. with continuously
variable boost/cut max +/-16dB
- LF controls
4 switched frequencies: 35Hz, 60, 110, 220. with continuously variable
boost / cut max +/-16dB
- H.P. Filter
3 switched frequencies: 300, 100, 30Hz slope 18dB/octave
Frequency Response
+/-0.5dB 20Hz to 20kHz. (Line input ref 1kHz)
Noise (equivalent input)
Mic input<-125dBm
Distortion
600ohm load at +20dB output: 20Hz <0.15%. 1kHz <0.01%. 10kHz <0.05%
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