> PQ Recording Equalizer Owner‘s Manual
PQ Recording Equalizer, Model 2377 Owner‘s Manual Owner‘s Manual V 1.0, 5/2004 Software version 016 R & D: Wolfgang Neumann The information in this document has been carefully verified and is assumed to be correct. However Sound Performance Lab (SPL) reserves the right to modify the product described in this manual at any time. Changes without notice. This document is the property of SPL and may not be copied or reproduced in any manner, in part or full without the authorization of SPL.
Content Introduction ................................................................................................... 3 Installation .................................................................................................... 4 Technology ..................................................................................................... 5 Fuctions and Operation ...................................................................................
Installation BEFORE SWITCHING ON POWER SUPPLY AND PQ, THE PQ MUST BE CONNECTED TO THE POWER SUPPLY WITH THE SUPPLIED MULTICORE LEAD. PAY ATTENTION TO A SECURE CONNECTION. The PQ and the external power supply should be situated away from heat sources and direct sunlight. PQ and power supply need sufficient air circulation. Avoid installation in environments exposed to vibrations, dust, heat, cold, moisture or electrical and magnetic fields.
Technology SPL High Gain Technology Additional construction features SPL is constantly pushing analog signal processing to its limits by combining the best possible components with perfectly optimized circuit design. As our latest achievement in this ongoing process, SPL‘s High Gain Series surpasses the hitherto accepted limits of audio signal processing and combines truly unparalleled analog sound quality with the control and convenience of digital units.
Functions and Operation Constant Q and proportional Q modes Each frequency band consists essentially of two fully parametric equalizers: one for constant Q mode and one for proportional (or variable) Q mode, selectable per band. The PQ is the first equalizer to offer both modes, endowing it with double equalization power for demanding corrective and creative applications.
Functions and Operation Amplitude Amplitude settings are freely adjustable from -/+ 15 dB in proporional mode and from -/+ 20 dB in constant Q mode. Frequency Each channel provides five fully parametric frequency bands covering 10 Hz to 28 kHz. Each band overlaps its neighbor by one octave and can be independently activated and deactivated. The following frequency bands are provided: LF (Low Frequencies): 10 Hz - 235 Hz LMF (Low Mid Frequencies): 35 Hz - 720 Hz MF (Mid Frequencies): 330 Hz - 7.
Rear Panel/Connections Audio inputs and outputs are provided as balanced XLR connectors. Connect the included external power supply to the multi-pin socket in the upper left corner, ensuring that the connection is secure. Please note: To ensure secure connections, stable operation and optimal audio quality, always use professional-grade cables and connectors.
Specifications 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: @-20 dBu: @0 dBu: @+10 dBu: @+30 dBu: 0.2% 0.05% 0.01% 0.002% 0.
Warranty SPL electronics GmbH (hereafter called SPL) products are warranted only in the country where purchased, through the authorized SPL distributor in that country, against defects in material or workmanship. The specific period of this limited warranty shall be that which is described to the original retail purchaser by the authorized SPL dealer or distributor at the time of purchase. All remedies and the measure of damages are limited to the above services.
