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Old 25th February 2006, 01:46 AM   #1
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Question Electronics Gurus.

Ok nobody seems to be able to answer this. On my head unit the output for each channel is L-3.93V and R-3.93V feeding each channel into a mono amplifier I know the signals are combined but are the voltages also? Do I add them together to get 7.86V ? I know if I disconnect one side it get quieter so it is cutting voltage. Any help would be greatly appreciated, trying to set the gain input level properly (1V, 2V, 4V, 8V, 16V) on mt Kicker sx1250.1's. Polo..
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Old 25th February 2006, 01:49 AM   #2
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Most automotive mono amps add the L and R inputs together to form the output


To set the output you really shouldn't go by the markings on the amp though, they're very unreliable

http://www.resnet.trinity.edu/areynol1/gain.htm
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Old 25th February 2006, 01:52 AM   #3
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It is the input gain level range not the gain itself. So should I add the voltage of both channels? Polo..
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Old 25th February 2006, 02:15 AM   #4
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Input level, input sensitivity and gain are all different names for the same thing, I'm not sure what you're asking.
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Old 25th February 2006, 02:22 AM   #5
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Ok my amp is digital, in the beginning of the menu it asks what input gain level setting. I need to meaure the appropriate voltage which I did then select the desired setting, I will either select the 8V or 4 V setting. After the gain range is set I can accurately go ahead and adjust the amplifier gain. This has a line driver and digital signal processor built in. Range setting and gain level are two different things on this amp. All I need to know if the voltages combine 3.93+3.93V= 7.86V? Polo...
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Old 25th February 2006, 07:00 AM   #6
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Quote:
All I need to know if the voltages combine 3.93+3.93V= 7.86V
No,Use the 4V setting.
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Old 25th February 2006, 02:53 PM   #7
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Ah, in that case then DigitalJunkie is right, set it at 4v initially and then tune from there
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Old 25th February 2006, 11:05 PM   #8
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Ok, or should I overdrive it to gain headroom? If I set it at a lower setting like 4, 2, or 1V it will overdrive the signal (line driver) and I am able to run the gain at 1/3. Polo.

PS- thanks for your guys help..
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