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32-2054
40-Watt
PA Amplifier
Thank you for purchasing your 40-Watt PA Amplifier from
RadioShack. It gives you the versatility and power you need in
a professional sound system. Your amplifier’s wide frequency
response easily handles amplification of voice and music. Use it
in meeting halls and auditoriums, at sports events, in schools,
and in the office for paging systems—anywhere you need to
deliver special announcements with excellent sound.
What’s Included
PA Amplifier AC Power Cord
Fuse (Ins
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Contents Quick Start Contents Quick Start Quick Start .......................................................................................... 3 Follow these steps to quickly set up your PA Amplifier. For detailed operation instructions, see Pages 6-14. A Look at Your Amplifier..................................................................... 6 Front View........................................................................................................ 6 Step 1 Connect optional componen
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Quick Start Quick Start 4) Adjustthefollowingcontrolstothedesiredvolumeandbalance: MIC 1, MIC 2, PHONO/AUX, 100Hz, 1kHz, and 8 kHz. 5) When you get the desired balance, adjust MASTER VOLUME to the desired level. Retaining Catch Power Indicator LEVEL Indicator (in dB) MASTER VOLUME Press down the retaining catch of the correct terminal and insert the wire end into the terminal’s hole. Then, release the retaining catch to secure the wire. To speaker’s positive terminal To speaker’s negative te
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A Look at Your Amplifier A Look at Your Amplifier Rear View A Look at Your Amplifier L/R PHONO Jacks GND Front View Connect a turntable. Connect a ground wire (black or green) to avoid low-frequency hum. POWER PHONO/AUX Volume Control Turn the amplifier Adjust the volume of the turntable on or off. or auxiliary sound source. Terminals (COM, 4 , 8 , AC OUTLET (UNSWITCHED) 16 , 70V) Supply power (maximum load of Connect speaker wires to 100W) to a musical instrument or LEVEL Indicator (in dB)
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Preparation Preparation Tips for Speaker Connection Preparation You can connect one or more 4 , 8 , or 16 speakers (not supplied) to Placing the Amplifier the amplifier, with or without transformers. To ensure equal volume from each speaker, all the speakers connected (in series or parallel) without line Put your amplifier to a place with adequate ventilation. Do not put it on thick transformers should have the same impedance rating. carpeting (which can restrict air flow) or near a heat source
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Connections Connections Connecting Two Speakers in Series Connections • Connect the two speakers together, Speaker A’s positive terminal to Connecting Speaker Wires to the Amplifier Speaker B’s negative terminal. 1. Use a wire stripper (not supplied) to remove about half inch of the • Connect Speaker A’s negative terminal to the amplifier’s COM terminal. insulation from the end of the speaker wire. • Connect Speaker B’s positive terminal to the amplifier’s 4 , 8 , or 16 2. Using a wire connector
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Connections Connections Connecting Four Speakers in Series and Parallel Combination Connecting Speakers with Transformers 1. Group the four speakers into two pairs (A and B, C and D). Connect each For best results when using two or more speakers, connect a line transformer pair of speakers in series: A’s positive terminal to B’s negative terminal, C’s (not included) to each speaker. Transformers allow you to: negative terminal to D’s positive terminal. • Connect speakers with different impedanc
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Connections Troubleshooting Troubleshooting Transformer Problem Cause Solution Sound sources or speakers Check all connections. No power are not properly connected. The MASTER VOLUME, Adjust the volume controls to MIC 1, MIC 2, PHONO/AUX, desired settings. Amplifier 100 Hz, 1 kHz, 8 kHz controls are set to minimum. Sound sources or speakers Check all connections. are not properly connected. A microphone or cable might Check all microphones and be faulty or loose. cables. The speaker’s wires mi
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Specifications Safety Specifications Important Safety Instructions 1. Read these instructions. Output Power (at THD 10%, 4 Load 1kHz)..................................................40W 2. Keep these instructions. Total Harmonic Distortion (at 5 Watts, 4 , 1kHz, with Band Pass Filter) 3. Heed all warnings. 4. Follow all instructions. MIC ......................................................................................................... 0.50% 5. Unplug this product from the wall outlet bef
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Safety Do Stuff 17. An outside antenna system should not be located in the vicinity of overhead power Do More with your Amplifier lines or other electric light or power circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them might be fatal. 18. Do not overload wall outlets, extension cords, or integral convenience receptacles as this can re
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Limited Warranty This product is warranted by RadioShack against manufacturing defects in material and workmanship under normal use for one (1) year from the date of purchase from RadioShack company-owned stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WA
