Chevrolet Cruze Forums banner

Sub cuts out at high volume..?

3803 Views 20 Replies 5 Participants Last post by  Krause248
Hi new to site, I just installed one 12inch sub with 600w amp that I recently pulled out of my old car and put in my cruze, I did this install with a PAC gm44 and system sounds great only up to 18 clicks of volume and anything higher the sub cuts outand bass is gone then soon as I turn volume down a little the sub comes back, I have a big enough power and ground wire and ground is solid with good contact, I don't believe it's a power issue cause it happens weather car is running or shut off, I've also connected another battery with jump cables and still cuts out, Any help would be appreciated.
See less
Hi new to site, I just installed one 12inch sub with 600w amp that I recently pulled out of my old car and put in my cruze, I did this install with a PAC gm44 and system sounds great only up to 18 clicks of volume and anything higher the sub cuts outand bass is gone then soon as I turn volume down a little the sub comes back, I have a big enough power and ground wire and ground is solid with good contact, I don't believe it's a power issue cause it happens weather car is running or shut off...
See more
1 - 20 of 21 Posts

· Registered
Joined
·
13 Posts
Discussion Starter · #3 · (Edited)
I'm not shure what guage wire but kit said 680max, My ground is in the trunk near spare tyre and I sanded the paint, I set the gains on amp and the PAC really confused me cause I wasn't shure what to set the switches at and the gains I have turned all the way in loud, When playing with switches the one makes subs from quiet to loud and other switch turns subs off or on. Dono if wire is cca or ofc.


Sent from AutoGuide.com Free App
 

· Contest Manager
Joined
·
2,239 Posts
Please post a high quality pic of what your dials are set to on the amp.

Also set the gains on the PAC to 1/4.

If you max out all the settings then you are most certainly sending a clipped signal to the sub. And you will burn it out soon.

Clipping is when the signal is wanting to go higher but the amp has reached its power limit. So at the top of the sound wave it's completely flat.
So your sub is staying at its peak and lowest point for far too long and heats up the voice coil badly.

Gains are not a volume knob. They are used to match your voltage.


Sent from AutoGuide.com App
 

· Contest Manager
Joined
·
2,239 Posts

· Contest Manager
Joined
·
2,239 Posts
Yellow Electronics accessory Cable Automotive lighting Technology


I'm guessing he has something like this.
Which is 8ga and doesn't say anything about OFC so it prob CCA. :/

Also the twisted pair RCA are not the common pairs to use. coaxial is what most amps need.

http://youtu.be/QOagVDZLQnA

Sent from AutoGuide.com App
 

· Registered
Joined
·
13 Posts
Discussion Starter · #9 ·
Yes that is the wire kit I have and have used in my last car also with same amp/sub no issues, I've turned down the gains on the PAC but still cuts out at high volume, Is it possible my PAC could be hooked up incorrect cause theirs 4 rca's and wasn't shure what ones to use, all my connections are good and tight. Audio equipment Electronics Technology Stereo amplifier Electronic device



Sent from AutoGuide.com Free App
 

· Contest Manager
Joined
·
2,239 Posts
The RCAs go to the rear channels which should be the two farthest to the right IIRC

I can't tell which side of the knob the pointer is facing.
Can you tell me where they are relative to a clock.
Or tell me if the side with gap is the pointer or the solid side is the pointer.

Thanks


Sent from AutoGuide.com App
 

· Contest Manager
Joined
·
2,239 Posts
The gain should be around 2
But that is just a rough estimate and I would have to actually be there to actually dial it in.
I highly recommend looking at a few YouTube vids that actually explain how to set gain correctly.


Sent from AutoGuide.com App
 

· Registered
Joined
·
13 Posts
Discussion Starter · #15 ·
I really appreciate the help, I don't think theirs much more I can do cause I've tryed everything, I've tryed setting amp gains high and low with no result, I'm totally confused with this PAC lock cause I've also tryed connecting it all different ways and messed with gains and no result, this setup worked well in my other car so I believe the PAC is cause of my problem.


Sent from AutoGuide.com Free App
 

· Contest Manager
Joined
·
2,239 Posts
I'm telling you brother, Ohm's Law... Its cutting out due to voltage drop, upgrade your wiring first, but if its still doing it then you need that additional power supply, and thus a capacitor.

Sent from AutoGuide.com Free App
You don't need a cap for 600 watts.

If your going to make a recommendation make sure it's a necessary.
Sent from AutoGuide.com App
 

· Resident Forum Drunkard
Joined
·
8,257 Posts
We need some pics Krause ! Terry is on the right track with you . you'll get there man .
 

· Administrator
Joined
·
14,726 Posts
I'm telling you brother, Ohm's Law... Its cutting out due to voltage drop, upgrade your wiring first, but if its still doing it then you need that additional power supply, and thus a capacitor.

Sent from AutoGuide.com Free App
A capacitor won't do a single thing for a weak electrical signal. The problem here isn't the voltage. I can assure you that the system can handle more than 600W RMS. In fact, I am running 1000W RMS...on a class AB amp, pushing two 18s.

Caps are a colossal waste of money. If you need more power, get a second battery.

Sent from mobile.
 
1 - 20 of 21 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top