Technical specifi cations – Sound Performance Lab PQ Mastering Equalizer User Manual
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Input impedance (balanced):
20 kOhm
(Welwyn precision resistors;
transformerless)
Output impedance (balanced):
‹ 600 Ohm
(CMR trimmers, transformerless)
Overload resistance:
+34 dB
(Band 1-5 = ON, B/C = 0)
Harmonic distortion:
@-30 dBu:
0.2%
@-20 dBu:
0.05%
@0 dBu:
0.01%
@+10 dBu:
0.002%
@+30 dBu:
0.0005%
S/N:
-90 dBu (A-weighted; -88 dBu w/o Filter)
(Band 1-5 ON, B/C = 0, each Q = Q 1,
Band 1 = 10 Hz, Band 2 = 100 Hz,
Band 3 = 1 kHz, Band 4 = 10 kHz,
Band 5 = 28 kHz)
Transmission bandwidth:
10 Hz-100 kHz
(-3 dB, Band 1-5 = ON, B/C = 0)
Processed frequency range:
10 Hz-28 kHz
Phase: @
10
Hz:
+5.5°
@ 1 kHz:
0°
@ 10 kHz:
-1.23°
@ 100 kHz:
-8.8°
@ 200 kHz:
-11.25°
CMRR:
› 75 dB @ 1 kHz
(Max. Gain +34 dBu, Band 1-5 ON,
B/C = 0)
Housing & mounting dimensions:
Standard EIA 19 inch rack chassis, 4 units
482 x 176 x 390 mm W x H x D
ca. 189 3/4 x 69 3/10 x 153 1/2 inch W x H x D
Weight:
18,25 kg/40,15 lbs
External power supply
The PQ comes with an external linear power supply featuring a toroidal transformer for
optimal audio quality and dramatically reduced inductive disturbance/interference.
Input voltage:
110-120 V/60 Hz or 220-240 V/50 Hz
Noise:
› -100 dBu (@ +/- 60 V)
Dimensions:
Width: 15 cm (5 9/10 inch)
Depth: 24,5 cm (24 1/2 inch)
Height: 7 cm (2 3/4 inch)
Weight:
4,2 kg (9,24 lbs)
Technical Specifi cations