Connecting speakers to your REDBACK A 4235A PA Mixer Amplifier correctly is crucial for optimal performance and to prevent equipment damage. Here's a step-by-step guide:
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Speaker Compatibility: Select speakers equipped with a 100V line transformer. The amplifier's power output dictates the required impedance. For the REDBACK A 4235A (30W), speakers should have a minimum impedance of 333 ohms at 100V. If you have the A 4245A (60W), use speakers with a minimum impedance of 166 ohms at 100V. For the A 4255A (100W), use speakers with a minimum impedance of 100 ohms at 100V.
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Speaker Connection: Connect the speakers to the output terminals located on the rear panel of your REDBACK amplifier. It's essential that the combined load impedance of all connected speakers does not exceed the amplifier's rated output to avoid any potential damage.
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Impedance Verification: When working with speakers featuring line transformers, standard multimeter impedance measurements are not accurate. You'll need an impedance meter for precise readings. Consult Figure 2 in your amplifier's manual for impedance values corresponding to various loads when using speakers with 70V and 100V line transformers.
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Load Calculation Example: For instance, if you're using the A 4235A (30W) amplifier and are connecting speakers with a 100V line transformer, the total load impedance across all speakers should be 333 ohms. This ensures the amplifier operates safely and efficiently.
By carefully following these steps, and ensuring proper speaker selection and connections, you can reliably and effectively connect your speakers to your REDBACK A 4235A PA Mixer Amplifier.
