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First off, here's my system:
- Kenwood eXcelon KDC-X589 Head Unit
- 12 Disc JVC CH-1500RF CD Changer in trunk
- Hifonics BX1605D 1600 watt Mono Amplifier
- 300w Kenwood eXcelon KFC-X698 & Cadence ZX-6KIT Speakers
- (2) Alpine Type R Dual 2ohm 1500W Peak, 500W RMS Subwoofers
- Custom Ported/Tuned to 32hz Enclosure
- My amp power and ground wire are 2g, my alternator to batt is 4g, and I am using a 150A ANL Fuse.
When I have the system cranked up and on for a while, my amp will shut off. It will stay off anywhere from 5-15 minutes. Sometimes I can just unhook the negative battery, hook it back up, and it will work. But not every time. I basicly want to know if its overheating or what, and what I can do to fix it?

What type of car are you running and is the electrical system stock? You may be attempting to 'pull' too much power from your electrical system if it hasn't been upgraded. But that does depend on what type of vehicle you have.

I do know from experience that Hifonics amps tend to go into protection rather easily.

kevinberry1 wrote:What type of car are you running and is the electrical system stock? You may be attempting to 'pull' too much power from your electrical system if it hasn't been upgraded. But that does depend on what type of vehicle you have.
I do know from experience that Hifonics amps tend to go into protection rather easily.

1997 Dodge Avenger
Stock electrical system except for a Stinger SP1000 Battery and a 200 Amp High Output Alternator. I have the wiring and am just waiting on the supplies to do the "Big Three" to 0/1 Gauge wiring.
The wiring to the alternator from the battery is Stinger 4 gauge. Other than that its all stock.

ProjectVenge97 wrote:1997 Dodge Avenger
Stock electrical system except for a Stinger SP1000 Battery and a 200 Amp High Output Alternator. I have the wiring and am just waiting on the supplies to do the "Big Three" to 0/1 Gauge wiring.
The wiring to the alternator from the battery is Stinger 4 gauge. Other than that its all stock.

I guess I would wait until you have upgraded the big 3 to see if that corrects the problem. How did you set the gain on your amp?

kevinberry1 wrote:I guess I would wait until you have upgraded the big 3 to see if that corrects the problem. How did you set the gain on your amp?

Im no sure what that means.

Setting the gain involves matching the input voltage on the amp to the output voltage on the HU, line driver, or whatever source is supplying the signal to the amp.

It is important because if the gain on the amp is set too high you may be clipping the subs and sending them a distorted signal. This could result in the amp going into protection mode.

At about what level is the gain on your amp set?

kevinberry1 wrote:Setting the gain involves matching the input voltage on the amp to the output voltage on the HU, line driver, or whatever source is supplying the signal to the amp.
It is important because if the gain on the amp is set too high you may be clipping the subs and sending them a distorted signal. This could result in the amp going into protection mode.
At about what level is the gain on your amp set?

http://www.sonicelectronix.com/images/a ... 1605db.jpg

Sub Sonic is at 15Hz
Bass EQ around 6db
Low Pass is about where it is in the pic on the link

http://www.sonicelectronix.com/images/angles/dcr1.jpg

My Bass Controller is at 9db usually

The 'level' knob is what I was asking about, that is usually called the 'gain', and it appears yours ranges from 9v to .2v. It will be important to know where yours is set and how that compares to the voltage output of the HU you have.

It seems that you are boosting the bass output a little with 6db plus 9db, but again that depends on what the level is set at.

kevinberry1 wrote:The 'level' knob is what I was asking about, that is usually called the 'gain', and it appears yours ranges from 9v to .2v. It will be important to know where yours is set and how that compares to the voltage output of the HU you have.
It seems that you are boosting the bass output a little with 6db plus 9db, but again that depends on what the level is set at.

OK the level is pointed at the P in Power.
The settings on my H.U. I usually keep the subs at +15 (Highest), Bass at +6 (High is 8), and the Mid at 4 (High is 8). Sometimes when Im trying to show off or something, Ill turn the Bass Boost all the way up. When I do that, the amp usually cuts out after like 5 minutes. So I dont do it much.

1) How are the all the voice coils on the subs wired?
2) Do you have access to a digital voltage meter?

From the sounds of it, and what I've experianced with the Brutus amps, you are either overdriving the amp very much and/or the amp is seeing a load lower than 1ohm.

Sub wiring:
If the subs are wired this way, the amp is seeing a 2ohm load. This is good.


If the subs are wired this way, the amp is seeing a .5ohm load. This is bad.


Note: some have mentioned that these amps will run at .5ohm daily, without any problems, but I have yet to see anybody actually prove it.

If you have access to a digital volt meter and a 50hz test tone, you can tune that amp real quick. This is actually not the best way to tune the amp (an O-Scope is the best), but it'll do the job.

Realm of Excursion voltage calculator

Something else. +15 on the subs??????? I never have to turn mine above 3. Bass eq on the amp is at less than 1/4 up. You may be over driving the amp right there.

Just my few thoughts. I'm currently running a 1500d and 2005d, both at 1ohm, each on 2 dvc 4ohm subs wired to 1ohm. No problems at all.