factory mod, ma audio hk4000d problems

Home / the12volt's Install Bay / Car Audio / factory mod, ma audio hk4000d problems (

Topic Closed)

Welcome Guest :)

Members

Next Page > < Prev Topic Next Topic >

9515x3

Member - Posts: 7

Joined: May 24, 2005

Posted: May 24, 2005 at 10:45 PM / IP Logged

i have the following set-up-

3 mtx 9515-04 woofers running at a 1.33 ohm load

1 hk4000d amplifer (supposedly factory modified as i bought it from someone who used to be sponsored by them)

i also have about 20 other speakers, 2,000 watts for the rest of them, 5.1 surround, and 17", 23", three 6", and a 7" touchscreen, an airbag system (compressor etc) in my vehicle that are all running off of my charging system- it has been upgraded and i run a iraggi 280 amp alternator and 7 svr 80-12 batteries. I really don't think this problem is on the current side of things.

so here goes-

my amp cuts off (into protection) when i turn it up past a certain point. not every time i do so, but 1 in 3 or 4 times i do so. sometimes i can turn it on and play it as loud as i want for as long as i want with no problems and other times it will shut off the first time i get it turned up at all...

i have trouble shot it by rewiring the remote wire so that i now know it is getting plenty of voltage there, and i have repeatedly checked ground, and power to be certain, i have also ruled out heat as the main source of the problem because it will do this when the amp is simply not hot at all (in fact not even warmed up). however, it does seem to usually be at its best the first time i turn it on after a long time of letting it sit.

what else could be tripping my amp into protection? please help. this is driving me crazy

Alpine Guy

Platinum - Posts: 2,478

This member has made a donation to the12volt.com. Click here for more info.

Joined: October 18, 2003

Location: Canada

Posted: May 24, 2005 at 10:53 PM / IP Logged

How good are the grounds from your batterys to the body? Does the amp shut off when your voltage is high, low, or does it do it randomly? Have you measured your final resistance the amp is seeing from the subs, some companys claim 4 ohm but really are 3.2 ohm for example.

Many variables here, im shure others will have more advise to check.

2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.

9515x3

Member - Posts: 7

Joined: May 24, 2005

Posted: May 24, 2005 at 11:03 PM / IP Logged

my amp is grounded directly to the frame.

i have mobile spec sponsorship and no "expense" was spared in wiring etc.

have not measured final resistance- how can it be related to that when it will work properly at some tiems but not others?

as i can tell the amp goes into protection when the input voltage is anywhere in its range.

9515x3

Member - Posts: 7

Joined: May 24, 2005

Posted: May 24, 2005 at 11:05 PM / IP Logged

what are the possible reasons for any amp to go into protection?

heat, instability at that resistance, what else? this is somethign i should know

auex

Platinum - Posts: 5,041

Joined: December 23, 2002

Location: Arizona, United States

Posted: May 24, 2005 at 11:16 PM / IP Logged

What Alpine Guy asked was did you redo the factory ground between the chassis and the battery not the amp to the chassis.

As to causes, it could be a speaker gone bad, bad ground/too much resistance, bad amp and a number of other things.

Certified Security Specialist

Always check info with a digital multimeter.

I promise to be good.

Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

9515x3

Member - Posts: 7

Joined: May 24, 2005

Posted: May 24, 2005 at 11:26 PM / IP Logged

ah, sorry.

batteries to the ground are the same location on the frame as the amp's ground. everything is grounded well.

9515x3

Member - Posts: 7

Joined: May 24, 2005

Posted: May 25, 2005 at 4:30 PM / IP Logged

so i'd love to hear anyones ideas for what to check

like i said i've concentrated on heat, and low voltage (power and remote) since those are the things i can think of that it could be.

jeffchilcott

Platinum - Posts: 2,483

Joined: April 11, 2002

Location: United States

Posted: May 25, 2005 at 5:13 PM / IP Logged

I would start testing piece by piece. Do you have acess to another vehicle to test this amp in? Also try running a volt meter on your pos, and remote lines. watch voltage on there and try to get it to trip off. possible regound, this amp has 0 guage pos and neg correct? is 0guage being ran for ground?

2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR

2007 USACI World Champion

2007 World Record

2006 USACI Finals 2nd Place

9515x3

Member - Posts: 7

Joined: May 24, 2005

Posted: May 25, 2005 at 9:13 PM / IP Logged

it does have 0 gauge power and ground.

i will use a voltmeter to test things

fuseblower

Silver - Posts: 403

Joined: June 25, 2003

Location: United States

Posted: May 26, 2005 at 12:50 PM / IP Logged

You might have a blown sub. If you have a box with out separaters all of the subs would move as if they are working but if the blown one pops on every now and than your system would shut down. Check your subs, if they all show as being good, try pushing on the cone and seeing the they show the coil as shorting out during the movement phase.

Next Page >

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.