Rockford Fosgate Punch 801X Car Audio Amplifier Logo
Stefan Skorich Posted on Oct 02, 2006
Answered by a Fixya Expert

Trustworthy Expert Solutions

At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.

View Our Top Experts

Blown fuse I was driving around the other day when my bass suddenly cut out. I felt my amp and it felt very warm even though I didn't have it very loud. I got home and checked my wiring fuse and found it was blown. I replaced it and it immediately blew again. I opened up my amp yesterday and was poking around with an ohmmeter. I found very low resistances on all the transistors in one of the channels versus the other channel (i.e. 1 ohm vs. 4.5k), but nothing was burned out. What should I do?

1 Answer

Anonymous

Level 2:

An expert who has achieved level 2 by getting 100 points

MVP:

An expert that got 5 achievements.

Governor:

An expert whose answer got voted for 20 times.

Scholar:

An expert who has written 20 answers of more than 400 characters.

  • Expert 148 Answers
  • Posted on Nov 02, 2006
Anonymous
Expert
Level 2:

An expert who has achieved level 2 by getting 100 points

MVP:

An expert that got 5 achievements.

Governor:

An expert whose answer got voted for 20 times.

Scholar:

An expert who has written 20 answers of more than 400 characters.

Joined: Apr 09, 2006
Answers
148
Questions
0
Helped
45547
Points
161

This can be caused by too low of an impedance from the way the speakers are wired, bad speakers, crossed/shorted speaker wires, and sometimes even a poor charging system (if the amp goes into protect when the volume is turned up) and is usually what the problem is 95% of the time. As you said, very possible to be shorted output devices or shorted power supply rectifiers. Beyond that, it could be a shorted filter cap, some sort of short across the power rails, some sort of short across the output, shorts across the primary. And of course loose hardware - any missing screws or nuts? A loose one under a pc board can short out most anything.

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1helpful
1answer

I have a 04 Silverado and the stereo always sounded great a lot of bass and clear. I got in one day and it sounds like the bass is off. I assumed it was the factory amp and replaced it and is still the...

could potentially be a blown fuse in your trucks interior fuse box. I had a loose ground connection from mine and i hit a bit bump one time while driving and kept blowing the fuse when the connection would break. maybe worth checking those if u havent already
0helpful
1answer

Reset (replace) computer box

The fact that all your electrics disappeared including all dashboard lights indicates a faulty battery/connection.

Check the battery terminals for cleanliness and tightness. Check the black earth lead for cleanliness and tightness where it connects to the engine block/bodywork. Try adding an extra black battery lead - connect it to a suitable point on the engine or bodywork
0helpful
1answer

HI CAN YOU PLEASE TELL ME WHY MY FENDER RUMBLE 100 BASS AMP DISTORTS AT LOW VOLUME? EVEN THOUGH THE SPEAKERS IS NOT BLOWN

A common reason for 'distortion' with all bass amps can be either that the screws holding the speaker unit to the cabinet have worked loose or that there has been a build up of dust particles in the corrugations around the edge of the speaker cone, which rattle especially on the lower notes.
The solution is simple - remove the front grille and check the screws are tight. Use a vacuum cleaner to remove dust from the rim of the speaker cone.
0helpful
1answer

Active sub has stopped working

I have 2 12" kenwood speakers on a 1000 watt amp ... the other day they cut off but the speakers arent blown, i replaced every fuse in the amp and the amp still cuts on when i turn the car on, yet the amp seems to not be pushing the speakers ...i also looked at the main fuse under the hood of my car but i cant tell whether its blown or not, why is my amp not pushing out any power?
0helpful
2answers

No Power to the Amp

open the amp and look for a fuse either on a circuit board or on wires inside. trace power wires onto board.
0helpful
2answers

Powers on but no sound

Check the main amp fuse under the hood, even if it looks good just change it. Often times that light on the amp can come on just from the power amp tunon wire. Try a friends subwoofer box just to make sure the connectors on your box are good, and if that doesn't work then give me some more details....year/make/model of car, what kind of sub, what types of things do you see on the side of the amp....is there a green light as well as a red light?
0helpful
1answer

Amp cuts out at certain volume

is the output signal distorted? if not one of the subs could be damaged subs are capable of playing even when damage ,try them 1 at a time to see what happens.
1helpful
3answers

Amp stopped working...

Has the amp been overheating lately? It's quite possible that the amp could have just blown. Smell around the outside of the amp for an electrical burnt smell. If available, see if a friend also has an amp hookup and try removing your amp and copnnecting to the friend's cables. That will tell you if it's a wiring problem or an amp problem.
Not finding what you are looking for?

123 views

Ask a Question

Usually answered in minutes!

Top Rockford Fosgate Car Audio & Video Experts

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8992 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1212 Answers

Brad Brown

Level 3 Expert

19187 Answers

Are you a Rockford Fosgate Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...