Car Audio Car audio related questions and helpful hints for building the best sound system for your car or getting the most out of what you have.

80 volts

Thread Tools
 
Search this Thread
 
Old Jan 23, 2001 | 05:21 PM
  #1  
crows_camaro's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2000
Posts: 85
Likes: 0
From: MS,USA
80 volts

What's wrong with an amp if it is pumping out 80 volts.
I have an American bass 800 w
amp it fried my 15 again so it is back in the shop. I had the guy check the amp and he said it is messed up what do I need to do.
I will probably seed it off but does anyone know why or how it occeres?
Thanks
Joey
Reply
Old Jan 24, 2001 | 08:47 AM
  #2  
Jim85IROC's Avatar
TGO Supporter
iTrader: (2)
 
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
I'd like to know how he came up with this number. The output is constantly changing, and even with a constant AC output, the voltage would depend on how much power the amp was making. I don't see where an arbitrary number like 80 volts is of any value when testing the output of an amp.

I would guess that your American Bass amp is cooking your 15" sub because the 800 watt amp is clipping at volumes a whole lot lower than you think. As soon as you begin to send a clipped signal to a subwoofer, it's life will be short and painful. If your installer buddy has the equipment, hook up an oscilloscope in series with a very large resistor and parallel it with the speaker. I'm betting that at the high output levels that you're feeding to the sub, the waveform is severely distorted.

Solution? Buy a better amp or don't turn it up as far.

------------------
The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah
Reply
Old Jan 27, 2001 | 12:41 AM
  #3  
chrisfrerick's Avatar
Member
 
Joined: Oct 1999
Posts: 113
Likes: 0
From: cincinnati,ohio,us
see if your amp is passing dc. dc is bad on the outputs for subs.allot of single subs cant take 800w either especially if the amp goes into clipping
Reply
Old Jan 27, 2001 | 11:37 AM
  #4  
crows_camaro's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2000
Posts: 85
Likes: 0
From: MS,USA
You are right about the clipping the guy said it clipped like a ****.
It should be heading to the shop now. Thanks any ways.
Joey
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RS Reaper
Electronics
4
Oct 17, 2018 07:52 PM
oil pan 4
Fabrication
2
Oct 6, 2015 11:56 AM




All times are GMT -5. The time now is 01:39 AM.