QSC Audio SPA-3 user manual

Device: QSC Audio SPA-3

Category: Stereo Amplifier

Manufacturer: QSC Audio

Size: 0.12 MB

Added : 12/27/2013

Number of pages: 2

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QSC Audio SPA-3 User manual - Online PDF

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Summaries

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Abstracts of contents

Summary of the content on the page No. 1

SPA-3
PERFORMANCE A C CESSORIES
Stereo Precision Attenuator
Basic Description
The SPA-3 is an externally mounted two-channel precision attenuator
accessory for DataPort-equipped QSC amplifiers. With pushbutton pro-
gramming and digital gain control, it offers precise, secure, and repeat-
able attenuation settings from 0 to 32 dB. It features optional input iso-
lation transformers custom-made for QSC by Jensen, providing superb
common-mode noise rejection for high-performance sound systems.
The

Summary of the content on the page No. 2

8.8. 8.8. SPA-3 SPECIFIC ATIONS SPA-3 GENERAL INFORMATION 0–70° C Operating temperature Differential balanced (transformer balancing optional) Input type, each channel 28.4 kΩΩ balanced, 14.7 kΩΩ unbalanced Input impedance 95ΩΩ , quasi-balanced Output impedance, main +18 dBu Maximum RMS output voltage -116 dBr Noise (0 dBr = maximum output) <0.01% @ 1 kHz THD @ +4 dBu out 20 Hz–20 kHz, ±0.2 dB Frequency response >50 dB minimum; >60 dB typical Common-mode rejection +15V @ <300 mA, via external po

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