amp turns on then turns off
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=80293
Printed Date: July 19, 2025 at 4:21 PM
Topic: amp turns on then turns off
Posted By: shortys015
Subject: amp turns on then turns off
Date Posted: July 14, 2006 at 11:41 AM
i am in need of help my amp turns on fine then when i turn the bass up a bit the amp shuts off and goes into protect mode looking for help on what is going on please help
Replies:
Posted By: haemphyst
Date Posted: July 14, 2006 at 11:48 AM
Your impedance is too low, or you have a defective amplifier. My guess is the irst one.
What amp, what woofers, what impedance? Some more details, please.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: shortys015
Date Posted: July 14, 2006 at 11:51 AM
i have 2 12'' MTX thunder 7500 series subs 450 RMS
1800w Hifonics mono amp ...not sure what inpedance means
Posted By: haemphyst
Date Posted: July 14, 2006 at 12:23 PM
Are the woofers dual voice coil? Yes
Are they 2 ohm or 4 ohm? Dual 4 ohm
Are they wired in series or parallel? (INPUT HERE)
(If all paralleled, that is a one ohm load. Depending on the MODEL of the amplifier, that may not be a safe load.)
One or two woofers? (INPUT HERE)
Which MODEL HiFonics amp? (INPUT HERE)
Impedance is the correct term for "ohm load", whis is NOT a correct term.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: shortys015
Date Posted: July 14, 2006 at 12:30 PM
Are they wired in series or parallel? it is wired in 4ohms if that helps
(If all paralleled, that is a one ohm load. Depending on the MODEL of the amplifier, that may not be a safe load.)
One or two woofers? two
Which MODEL HiFonics amp? bx1800d
Posted By: arcangel9
Date Posted: July 14, 2006 at 2:54 PM
I had this problem too, but it was the ground, when I would turn up the bass, it would move the ground wire.
Posted By: shortys015
Date Posted: July 14, 2006 at 4:10 PM
thx arcangel9 thats exactly what it was the ground was bad relocated the ground wire and system is working great now thx everyone for the help
Posted By: arcangel9
Date Posted: July 15, 2006 at 1:06 AM
wow I guess thinking of simple things first actually does work
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