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Bronze Member Username: BlakktalonPost Number: 15 Registered: Dec-04 | Is there any problem using a 300 watt rms amp to power a 300 watt rms sub, by setting the gain all the way up. Its an infinity 1230 sub, and a rf 301s amp. Bridged I think its supposed to be 300 watt rms. Or are you supposed to use a larger wattage amp to run at 75/80% efficiency, like a 400 watt one turned up to only 300watts? |
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Silver Member Username: James_gTN Post Number: 275 Registered: Jul-05 | The gain setting is not used to "turn up" the wattage. The gain is an input sensitivity setting. You match your gain setting to the output voltage from your head unit. Simply put, turning your gain all the way up is just begging for trouble. By the way, a 300w RMS amp on a 300w RMS sub is perfectly fine. |
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Bronze Member Username: BlakktalonPost Number: 16 Registered: Dec-04 | thanks james |
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Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 10630 Registered: Dec-03 | the "gain" is used to match the head unit's line voltage (say 2V or 4V) to the input stage of the amplifier. It's not meant as a volume knob or to vary power output. set the gain properly. setting it too high (all the way up) causes the amp to clip and destroy both the amp and the speakers. having it set too low causes you to amplify a weak signal and get poor output and a higher noise floor. www.bcae1.com has guides to setting the gain, or input sensitivity. |