Wiring, Stereo & Electronics Audio Components | Radars | Alarms - and things that spark when they shouldn't

Speakers went out.

Thread Tools
 
Search this Thread
 
Old May 3, 2011 | 08:25 PM
  #1  
Snowman5677's Avatar
Thread Starter
Teching In
 
Joined: May 2010
Posts: 39
Likes: 0
Default Speakers went out.

Today I was cruising around and decided to play some rap to see how my sub sounded. I got about 100 ft and all my speakers just stopped playing I didn't install the system, it came with the car. It has a sub and like 3 amps would a fuse have gone off or something because I wouldn't think the speakers would have blown when I only had it at 11 out of 39 volume wise. The headunits like an after market dpvideo or something. The headunit's still going strong but I have 0 sound. I also have a speaker under both the passenger and driver seat. If anyone could give me a suggestion as to where to start that would be awesome thanks a ton in advance!
Reply
Old May 4, 2011 | 07:51 AM
  #2  
pjb's Avatar
pjb
TECH Resident
iTrader: (2)
 
Joined: Jan 2003
Posts: 994
Likes: 0
From: MD
Default

seems like your system has better taste in music than you do, and refused to play that crap.


jk
Reply
Old May 4, 2011 | 11:37 AM
  #3  
Capricio's Avatar
TECH Enthusiast
 
Joined: Nov 2010
Posts: 514
Likes: 0
Default

If you are running 3 external amps, then there is probably a fat 4 AWG or larger wire coming off your positive battery terminal. Look for an aftermarket fuse enclosure about the size of a disposable lighter spliced into that wire between the battery and the firewall, probably near the passenger fender before the ECU. It's usually a clear little enclosure with a big 80A or whatever fuse in it.

Check that first. If you don't find anything, look for a power distribution block on an amp rack, and there may be fuse enclosures near it. If all that checks out okay, then check for fuses on the amps themselves. They usually are regular colored automotive type fuses near the control switches and trim pots.
Reply
Old May 4, 2011 | 07:23 PM
  #4  
Snowman5677's Avatar
Thread Starter
Teching In
 
Joined: May 2010
Posts: 39
Likes: 0
Default

I checked the power distribution block fuses and there's 2 spots for fuses; there's one working one and the other spot is empty. It's been running off one fuse since I got it. Had trouble finding the fuses on the amps themselves. It seems the amps aren't getting power as the power light is off on the main larger power middle amp. The other 2 don't have the light. The fuse coming off of the battery terminal is fine. I'd guess it was the stupid BCM except the stereo's still going strong; plays dvds and such. Thanks for the help so far, keep it coming.
Reply
Old May 4, 2011 | 07:31 PM
  #5  
Capricio's Avatar
TECH Enthusiast
 
Joined: Nov 2010
Posts: 514
Likes: 0
Default

Originally Posted by Snowman5677
I checked the power distribution block fuses and there's 2 spots for fuses; there's one working one and the other spot is empty. It's been running off one fuse since I got it. Had trouble finding the fuses on the amps themselves. It seems the amps aren't getting power as the power light is off on the main larger power middle amp. The other 2 don't have the light. The fuse coming off of the battery terminal is fine. I'd guess it was the stupid BCM except the stereo's still going strong; plays dvds and such. Thanks for the help so far, keep it coming.
How are the amps activated? Are they using RCA level inputs, or using line-level from the powered head-unit output?

If they are using RCA inputs, it's likely they rely on a little "remote" activation wire. If you have a volt meter, make sure the activation wire is charging when the HU is on. Can't remember if it's supposed to be 5 or 12 VDC. The activation signal is likely daisy chained from the first amp on to the next and the last.

Also, which distro block doesn't have a fuse in it? Power or Ground? It's fine if ground doesn't have one, but it should still have a conductor inside or it will be an open circuit.

Can you identify the make/model of the amps and HU?
Reply
Old May 4, 2011 | 09:00 PM
  #6  
pentavolvo's Avatar
TECH Fanatic
 
Joined: Nov 2006
Posts: 1,273
Likes: 1
Default

get a cheap voltmeter otherwise you are shooting in the dark
Reply
Old May 5, 2011 | 07:27 AM
  #7  
WhiteBird00's Avatar
Ungrounded Moderator
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (4)
 
Joined: Nov 2003
Posts: 11,328
Likes: 344
From: Jacksonville, FL (originally from Toronto Canada)
Default

Originally Posted by Capricio
How are the amps activated? Are they using RCA level inputs, or using line-level from the powered head-unit output?

If they are using RCA inputs, it's likely they rely on a little "remote" activation wire. If you have a volt meter, make sure the activation wire is charging when the HU is on. Can't remember if it's supposed to be 5 or 12 VDC. The activation signal is likely daisy chained from the first amp on to the next and the last.
Just FYI... RCA and "line-level" are the same thing - also known as "pre-amp" output. I think you meant line-level versus speaker-level (amplified) signal.

Most aftermarket amps use a 12V "remote turn-on" wire (blue with white) from the head unit but the use of signal sensing or a remote turn-on wire is not dependent on line-level versus speaker-level input. Either type of input can be used with either type of amplifier activation. A remote turn-on wire is easier and cheaper to implement in an amp's design so it is much more common than signal sensing.
Reply
Old May 5, 2011 | 10:13 PM
  #8  
BCKNBLK's Avatar
TECH Apprentice
iTrader: (3)
 
Joined: Nov 2009
Posts: 392
Likes: 1
From: PE, Canada
Default

yah check for power at the amp... or is the amp in safety shut down mode?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old May 9, 2011 | 03:46 PM
  #9  
Snowman5677's Avatar
Thread Starter
Teching In
 
Joined: May 2010
Posts: 39
Likes: 0
Default

The headunit and amps from my knowledge are generic and cheap. But stereos aren't my forte as you can see. I have two xtant 2100b amps and 1 Usa-100 amp thats from Usa-Amps. The headunit is a dpvideo dzp901bh dvd stereo. If it is in safety shut down mode how do I get it out of it or check if it is?
Reply
Old May 9, 2011 | 06:56 PM
  #10  
BCKNBLK's Avatar
TECH Apprentice
iTrader: (3)
 
Joined: Nov 2009
Posts: 392
Likes: 1
From: PE, Canada
Default

my amp goes to a red light instead of a blue light when it is on (some amps yellow instead of green). This indicates a short,, a blown sub or wiring issues. If you cycle the ignition does it come back on for a minute? Also could be a bad ground on the amp.
Reply
Old May 10, 2011 | 07:23 PM
  #11  
Snowman5677's Avatar
Thread Starter
Teching In
 
Joined: May 2010
Posts: 39
Likes: 0
Default

Yeah we went and cycled the ignition and the first time the power light flashed on but it wouldn't do it again.
Reply
Old May 10, 2011 | 09:12 PM
  #12  
Capricio's Avatar
TECH Enthusiast
 
Joined: Nov 2010
Posts: 514
Likes: 0
Default

http://ampguts.com/forum/xtant-257/xtant-2100b-3563/

did you find the 30 amp fuse in the 2100b and check it?

The US Amps document also indicates there is an internal 50A fuse:

http://www.usamps.com/technical/pdf/wp100_99.pdf

http://ampguts.com/forum/us-amps-244...sa-100-a-3491/

You can also try disconnecting the speakers and see if the amps turn on one at a time. Did you ever determine how the amps are activated? Did you verify the remote wire voltage is there?

Try isolating elements and run just one amp at at time with no load (speakers disconnected). People really want to help you here, but we need to know which of things we suggested you have actually tried so far.
Reply
Old May 14, 2011 | 05:16 PM
  #13  
Snowman5677's Avatar
Thread Starter
Teching In
 
Joined: May 2010
Posts: 39
Likes: 0
Default

So today we went out and started taking the amps out when we realized the power wasn't even getting to the amps.(Duh) So we got our 12V tester out and tested the fuse on the battery terminal and it turns out one of the ends of the fuses was corroded even though the fuse looked fine. Went out bought a new one and it's working like a charm. Thanks for all the help guys!
Reply




All times are GMT -5. The time now is 04:09 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE