I was thinking and had a question for all you knowledgable types.
Is there a way to set your gain on an amp exactly to the signal from your HU/processor using a multimeter?
I feel like this should be possible, I just don't know how to, where to test, what to set the meter for..... you know
any thoughts/ suggestions, instructions?
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Peace cannot be kept by force, it can only be achieved through understaning. - Al Einstein
Most amps have markings on the gain knob...match to the output listed in the HU manual and it should all be fine...I always play with it a bit to personal taste, but the change is/should be minor to avoid clipping.
Yes, you can use a digital voltmeter to set the gain on the amp. You will need a test tone CD and play it at 1-kHz repeatedly. Set the voltmeter to AC, place the probes at each speaker terminal pair, turn up the HU's volume to about 90%, adjust the gain while looking at the voltage value. It should increase or decrease according. If you have a 4V deck, you can actually measure the voltage on the RCA plugs also.
its a little more than that, but pretty close. If your setting gains on your fronts you want to use a 1K test tone, sub 60Hz test tone. find out where your hu reaches about 75% of its volume, disconnect the speaker wire and turn up the volume at 75% hook up the multimeter to the speaker outputs set to AC voltage. Now the formula to find your setting is this, if you have a 2 x 50 watt amp RMS, multiply the RMS power times the impedance of the speaker, then square it, so if your hooking up a 4 ohm speaker, it 4 x 50=200, the square root of 200 is 14.14 Volts. Your gains are at min, turn up the gain until you reach 14.14 on the multimeter. Now your gains are properly set.
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Iraggi Alt ->SVR ->Eclipse ->Tru Technology ->DLS / Image Dynamics / Marv Enclosure / Rammat
Gen 4 V6
For Sale: Adire Audio Sadhara Sub System, Bryston SP1 Video Switcher, Totem acoustics speakers
well, now here's the kicker, If I'm doing it for a tweeter on one channel and a woofer on the other, but they are going through a component set, do i test at the crossover outs of the amp outs. How do you find the impedence of a comp set individually, are they both the same. I've heard tweets are often 8 ohm. Any help here guys
__________________
Peace cannot be kept by force, it can only be achieved through understaning. - Al Einstein
look at your specs on your speaker, I am pretty sure its a 4ohm load, the tweeter sees 4ohm and the woofer sees 4ohm, and since they are not playing the same frequency the total load is 4ohms.
Majority of HU will reach max voltage output at this setting, if you set your gains with the volume at max, you might already be clipping and if you set it half volume, you might not reach max voltage output.
__________________
Iraggi Alt ->SVR ->Eclipse ->Tru Technology ->DLS / Image Dynamics / Marv Enclosure / Rammat
Gen 4 V6
For Sale: Adire Audio Sadhara Sub System, Bryston SP1 Video Switcher, Totem acoustics speakers
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