Custom Horn w/ Adafruit Soundboard - Amp Fuse Popping


TheMobius40

Junior Member
May 31, 2018
2
0
Vancouver, WA
I am attempting to install a custom car horn with an Adafruit soundboard. The issue I am having is that the main amp fuse blows whenever the board sends a signal to the amp.

The system is quite simple; power runs to the board and amp, the board is connected to the amp via rca cables, and the amp is connected to a standard PA speaker. The components are powered through the cigarette lighter port (I know this is known as a lazy power solution, I'm trying to make the system somewhat portable).

Here is an image of the setup:

https://imgur.com/XIzkxHZ

The sound board is on the left and power connections at the top.

When the system is plugged in, everything is fine. As soon as the board sends a signal, the fuse in the center pops.

Thank you for any insight.

 

Boomin_tahoe

Hurtin' feelings errrday.
10+ year member
Jul 24, 2005
15,678
249
WA
Because I thought for some reason using a horn instead of actual speakers...

 
OP
T

TheMobius40

Junior Member
May 31, 2018
2
0
Vancouver, WA
Nope, car horn. As far as I know this still falls under car audio.

I am not by any means an expert on electrical systems; hopefully the issue is just a rudimentary oversight on my part.

 

Boomin_tahoe

Hurtin' feelings errrday.
10+ year member
Jul 24, 2005
15,678
249
WA
I didn't think a car horn is part of car audio??

Try looking at youtube vids?

 

The Camry

Hey, I Try.
Sep 22, 2013
2,996
1
Western Oregon
I am attempting to install a custom car horn with an Adafruit soundboard. The issue I am having is that the main amp fuse blows whenever the board sends a signal to the amp.
The system is quite simple; power runs to the board and amp, the board is connected to the amp via rca cables, and the amp is connected to a standard PA speaker. The components are powered through the cigarette lighter port (I know this is known as a lazy power solution, I'm trying to make the system somewhat portable).

Here is an image of the setup:

https://imgur.com/XIzkxHZ

The sound board is on the left and power connections at the top.

When the system is plugged in, everything is fine. As soon as the board sends a signal, the fuse in the center pops.

Thank you for any insight.
A: Because you're trying to power an amp with factory 18awg wire.

B: Because your fuse is too small as well. DONT FIX FUSE UNTIL YOU UPGRADE YOUR WIRE.

Test this with a 2ft or so of large AWG wire. 4-8AWG. Place amp close to battery and test it that way. Fuse accordingly.

 

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