Owner’s Manual SPA-3 Stereo Precision Attenuator *TD-000100-00* *TD-000100-00* Rev.
SPA-3 STEREO PRECISION ATTENUATOR I. DESCRIPTION The SPA-3 is a stereo preciSPA-3 SPECIFICATIONS sion attenuator accessory GENERAL INFORMATION for use with DataPortequipped QSC amplifiers. It Operating temperature mounts directly to the back Input type, each channel of two-channel CX, DCA, and Input impedance PL2 models, but it can be Output impedance used with the others Maximum RMS output voltage (PowerLight, ISA, and four- Equivalent input noise (ref. to max.
Kit contents These parts are included along with your SPA-3 module: Qty QSC part # Description 2 CO-000137-00 3-pin "Euro-style" plug 2 SC-040181-PP #4-40 × 1 1/8" black screw 1 SC-080051-PP #8-32 × 5/16" black screw shield SPA-3 input connections The screws are for mounting the SPA-3 to an amplifier or accessory bracket (see INSTALLATION), and the two plugs are detachable terminal blocks for the SPA-3’s two balanced inputs (see the illustration above). II.
Operation Press (n = Channel #) The table at left shows the button sequences for all possible operations on the SPA-3. Increase signal (decrease attenuation) UPn Hold UPn Increase signal (scroll) IV. OPERATION Decrease signal (increase attenuation) DOWNn Decrease signal (scroll) Hold DOWNn Bypass/engage attenuation (toggle) SHIFTn + UPn Increment step toggle (1 or 0.
VI. TECHNICAL ASSISTANCE & SERVICE Only a qualified technician should service your QSC product. There are no user serviceable components inside the unit and the risk of electric shock exists. Also, some components in your unit may require specific QSC replacements. Technical Assistance If you suspect that your SPA-3 is defective, check your system configuration and SPA-3 settings to determine the origin of the problem.
“QSC” and the QSC logo are registered trademarks of QSC Audio Products, Inc. 1675 MacArthur Blvd. Costa Mesa, CA 92626 (714) 754-6175 FAX (714) 754-6174 6 www.qscaudio.
