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  #1  
Old 09-11-2012, 08:55 PM
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Default hey am new

K I have an issue I have 05 f150 with two jl audio 13 tw5 subs powered by a point mono block d2000 amp now when the bass hits after volume of 15 the amp shuts off and on I checked grounds all good even put a 3 Farad cap still doing it could the amp b bad and in my other car who can suggest the best wider former about 200;a piece I was thinking sa12 earthquake dbxi American bass or re sexehich two will produce most bass
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Old 09-11-2012, 09:03 PM
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What size power wire are you using? And a cap is not gonna be enough is that amp is doing rated. The amp might be going into Thermal protect.
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Old 09-11-2012, 09:06 PM
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Welcome.
Quick advice.
Ditch the caps.
Buy a second battery.
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Old 09-11-2012, 09:08 PM
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^^^ I second this notion
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Old 09-14-2012, 07:12 PM
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OK cap did nothing power wire is 4 I did the big three and am still having the same issue
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Old 09-14-2012, 07:13 PM
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Power wire 4 I did big three still same issue wtf can it b
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Old 09-14-2012, 07:22 PM
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if all your grounds and power wires are correct, then it has to be the amp,

i never heard of a "point" monoblock tho !!

do you have a dmm or a dash mounted voltmeter ?

how bad does your voltage drop, when the volume is past 15 ?
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Old 09-14-2012, 07:34 PM
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Ive had 2 friends whose amps were both doing the same thing. Both turned out to be the bass boost was on either on the amp or HU.
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Old 09-14-2012, 09:43 PM
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I meant ppi class d2000 monoblick amp and with volume up the voltage goes from 14.5 down to 10.9 that was checked with dmm. Now the subs r wired at 1.5 ohm but the amp is supposed to be stable to 1ohm that's what manufacturer says
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Old 09-14-2012, 09:54 PM
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Quote:
Originally Posted by jeremy1968 View Post
I meant ppi class d2000 monoblick amp and with volume up the voltage goes from 14.5 down to 10.9 that was checked with dmm. Now the subs r wired at 1.5 ohm but the amp is supposed to be stable to 1ohm that's what manufacturer says
voltage going to 10.9 i bet money that amp is kicking into protect bc of low voltage..
at 10.5v a battery is 99% dead.. ditch that capacitor..(reason why u ask?) bc a capacitor only stores INSTANT power..and once that capacitor is discharged it will pull more juice from the underhood battery..Which is already struggling to supply the whole car and the system..so it hurts higher powerd systems more than good (unless a strict comp car ive seen a few with capacitors)
a little 400 to 500w rms amp would benefit from a 1 or 2 farad cap..just bc that amp is pulling so little from the battery
so in short..make sure u got the BIG 3 done properly (id suggest 0g wire)..and get a good underhood battery and a battery in back also
a system like yours with a stock alt which i assume is somewhere around 130amps pair that with say 100Ah worth of battery ...and you SHOULD have no voltage issues at all
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