Table of Contents
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Table of Contents
Related Manuals for Radio Shack 32-2001
Summary of Contents for Radio Shack 32-2001
- Page 1 Owner’s Manual Please read before using this equipment.
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Page 2: Table Of Contents
32-2001.fm Page 2 Friday, February 4, 2000 7:53 AM ˆ Contents Features ... 3 Preparation ... 4 Presetting the Controls ... 4 Choosing a Location ... 4 Making Connections ... 4 Speakers ... 5 Speaker Phasing ... 5 Determining Total Speaker Impedance ... 6 Connecting Speakers ... -
Page 3: Features
32-2001.fm Page 3 Friday, February 4, 2000 7:53 AM ˆ Features Your RadioShack 20-Watt PA Amplifier gives you 20 watts of solid power for your PA system. Its wide frequency re- sponse easily handles amplification of voice and music. It operates on either... -
Page 4: Preparation
32-2001.fm Page 4 Friday, February 4, 2000 7:53 AM ˆ Preparation PRESETTING THE CONTROLS Warning: A sudden high output from the amplifier could damage your hearing or the speakers connected to the amplifi- er’s output. To avoid accidentally overdriving a channel or prematurely amplifying an audio input, set all the amplifier’s front-... -
Page 5: Speakers
32-2001.fm Page 5 Friday, February 4, 2000 7:53 AM PHONO/AUX/CD Switch — select the input source. Even if you connected auxiliary equipment to both the input jacks, you can use AUX/CD only one source at a time. Speaker Push Terminals — press the appropriate tab to open a terminal. -
Page 6: Determining Total Speaker Impedance
32-2001.fm Page 6 Friday, February 4, 2000 7:53 AM 3. Touch the positive end of a 1.5-volt flashlight battery to the speaker ter- minal that does not have the wire attached to it. 4. Touch the negative end of the bat-... -
Page 7: Connecting Speakers
32-2001.fm Page 7 Friday, February 4, 2000 7:53 AM • If you connect more than two speak- ers using only series or only parallel connections, the total impedance might exceed the amplifier’s maxi- mum impedance (16 ohms) or fall below its minimum impedance (4 ohms). - Page 8 32-2001.fm Page 8 Friday, February 4, 2000 7:53 AM you can make the correct connection. The total impedance of all the speakers must match one of the amplifier’s output terminals ( , or Speakers in Series 1. To determine the total impedance of speakers connected in series, add the impedance of all the speakers.
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Page 9: Multiple Speakers With Transformers
32-2001.fm Page 9 Friday, February 4, 2000 7:53 AM Four 8 If you connect four 8-ohm speakers in series, the total impedance is 32 ohms (8 + 8 + 8 + 8 = 32). This exceeds the maximum rating. If you connect these speakers in paral- lel, the total impedance is 2 ohms (8 = 2). - Page 10 32-2001.fm Page 10 Friday, February 4, 2000 7:53 AM Taps You need a separate transformer for each speaker. Line transformers have several connec- tors called taps. The primary taps (on one side of the transformer) are the inputs and are rated in watts.
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Page 11: Controls And Operation
32-2001.fm Page 11 Friday, February 4, 2000 7:53 AM 3. Connect a wire from the speaker’s positive (+) terminal to the trans- former’s secondary matches the speaker’s total imped- ance (4, 8, or 16 ohms). ˆ Controls and Operation MICROPHONE 1 and 2 Inputs — con- nect any standard dynamic micro- phones. -
Page 12: Troubleshooting
32-2001.fm Page 12 Friday, February 4, 2000 7:53 AM ˆ Troubleshooting If you should run into difficulties, check the wiring of the system. Are there any short circuits in the speaker wiring? Have you provided adequate ventila- tion? Did you calculate speaker imped-... -
Page 13: Care And Maintenance
32-2001.fm Page 13 Friday, February 4, 2000 7:53 AM ˆ Care and Maintenance To enjoy your amplifier for a long time: • Keep the amplifier dry. If it gets wet, wipe it dry immediately. • Use and store the amplifier only in normal temperature environments. -
Page 14: Specifications
32-2001.fm Page 14 Friday, February 4, 2000 7:53 AM ˆ Specifications Output Power at 1 kHz, 10% THD ... 20 Watts THD at 1W, 1 kHz Low-Pass Filter MIC1 ... 1% MIC2 ... 1% AUX CD ... 1% PHONO ... 1% Input Sensitivity at 10% THD, 1 kHz MIC1 ... -
Page 15: Notes
32-2001.fm Page 15 Friday, February 4, 2000 7:53 AM ˆ Notes... - Page 16 32-2001.fm Page 16 Friday, February 4, 2000 7:53 AM Limited One-Year Warranty This product is warranted by RadioShack against manufacturing defects in material and workman- ship under normal use for one (1) year from the date of purchase from RadioShack company-owned stores and authorized RadioShack franchisees and dealers.