View Full Version : 12" Alpine Type R's cut out

06-16-2013, 10:03 AM
I recently purchased two 12" Alpine Type R's (SWR-1222D) subs and an 1100 watt RMS amp (Alpine MRX-M110). I have them wired for a 2 ohm load i believe. I can only turn my amp gain to about 1/8 turn up and my subs will cut out at 18 volume. I know these subs can handle more than that and I don't know what to do. Maybe my wiring is for a 4 ohm load? Help

06-16-2013, 11:17 AM
take a picture of how you have them wired. If you don't know exactly how you have them wired, you need to.


That is how you should have those subs wired.

06-16-2013, 01:02 PM
I checked and that's exactly how they're wired. So I'm assuming I have them wired correctly. I was trying to set my gains and before I even hear distortion my subs cut out. That's on 3/4 volume and about 2/5 turn up on gain.

06-16-2013, 01:45 PM
Do you have a DMM? Also what are your head unit settings at?

06-16-2013, 03:00 PM
What's dmm? AnD When I Set the Gains They're All Flat.

06-16-2013, 03:06 PM
Digital Multi-Meter. Measures DC/AC voltage and Ohms.

What head unit do you have?

06-16-2013, 03:22 PM
Jvc kd-r330

06-16-2013, 03:25 PM
the Volume Goes To 30

06-16-2013, 03:27 PM
Does that have a seperate sub control? If so, what is its setting?

06-16-2013, 03:39 PM
IT Does Not have Seperate Sub settings.

06-16-2013, 04:47 PM
Ok well I was thinking pre-out was low but 2.5 volts should be ok. And seperate sub setting helps with tuning. When your subs cut out does your amp turn off?

06-16-2013, 05:33 PM
No Just The Subs. TheY Come Back On And Cut Out Again.

06-16-2013, 05:39 PM
Sounds like either low imp protection, or thermal protection to me.
Those alpines amps dont like lower imp that recommended.

06-16-2013, 05:57 PM
So What Do You Guys Suggest I Do?

06-16-2013, 06:01 PM
Sounds like its possible there's a bad connection either your power or ground wire to the amp causing the amp to go protect due to being starved for power under heavy load. Check all connections be sure there's no paint on any metal surfaces and that all connections are tight.

06-16-2013, 06:02 PM
I had this issue a few months back and t was a bad connection at the fuse block under the hood and it had actually started melting the wire and block at the bad connection.

06-16-2013, 07:32 PM
^ i'd check this out.

also what does your ground look like? did you ground to the body of the car? did you scrape the paint off underneath the ground or is it grounded right on top of the paint?

06-16-2013, 08:59 PM
All my connections are good. The ground is going straight to the frame. Everything is tight. It sounds a little cleaner when it plays but it still cuts out at the same spot. Do you think maybe the m110 amp is too much for the type r's =S I'm so confused on this stuff right now..Maybe the wire should be changed..?

06-16-2013, 10:54 PM
ok guys freaking out now. I hooked up my old Alpine MRP M500. Works like a dream. Now what the f*ck can that be?! somethings gotta be wrong with my amp. what do you suppose that is? i bought it last week new.

06-17-2013, 04:12 AM
send it back thru the warranty and get a new one or fixed however they do it till then just run one type r on the other amp you have thats your best bet

06-17-2013, 04:14 AM
send it back thru the warranty and get a new one or fixed however they do it till then just run one type r on the other amp you have thats your best bet


06-17-2013, 07:54 AM
Alright i will. Do you think that the mrx m110 is a good amp? should i get money back or get the same amp?

06-17-2013, 09:07 AM
I wondering if you're trying to pull too much current for your stock electrical. Why size wire are you using?

06-17-2013, 06:05 PM
I think it's 8 gauge. Battery and ground.

06-21-2013, 08:43 PM
I think it's 8 gauge. Battery and ground.

There is your problem right there. Your amp is fused at the amp at 100 amps. You are not feeding the amp enough current. 8 gauge is fine for your 500 watt Alpine beause it only pulls 60 amps at full tilt boogie.

The Audio Guy
06-21-2013, 08:58 PM
Had same prob its the headunit misfiring