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Originally Posted by Stroker 1500
ahh yess that was my problem (im retarded). Anyways i did the amp for the subs with the 50hz tone and to my suprise i was pretty close by ear, when i measured the voltage it was 2 volts higher than it should have been according to the calculations so i don't think i did to bad by ear on the subs.
The mids gave me some problems however when i went to set it. I used the 1000hz tone and set the voltage to 20. (100watts rms@4 ohms) which pretty much put the gain all the way turned down. I put in a normal cd and there was pretty much no sound at all, at 35 it sounded like low volume so im not sure if i screwed up somehow or what but it was very quiet at 20 volts to the point where you couldn't hear much of the music. So i put it back to what i had it at originally. i'm thinking that i screwed up somewhere but im not sure where because i did the same thing and it worked perfect for the subs.
Here are the specs on the amp, i'm thinking that i did something wrong in the calculations.. Each speaker is 4 ohms and there are 4 of them connected to the amp
MOSFET 4-Channel Power Amplifier
* Max Power (2 Ohms)
* RMS Power (4 Ohms)
* Bridged Power (4 Ohms)
* Signal-to-Noise Ratio
* Frequency Response
* Dimensions:
* 100W X 4
* 50W X 4
* 200W X 2
* 102dB
* 20Hz-20kHz
* 10-5/8”W x 2-7/16”H x 12-1/2”L
So since the gain controls 2 channels it would be 100 watts rms right? Also would the ohm load still be 4 ohms if you have one 4 ohm speaker hooked to channel one and then another 4 ohm hooked to channel two or does the ohm load change?
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Set it up as if it were bridged, I think that it just makes it easier.
Sqrt(200*4)=28.28v
Use the + from channel 1 and the - from channel 2.
Do the same for the other two channels.
If that doesnt make it any better let em know.