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Connecting Multi amps with Remote On

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=36797
Printed Date: October 31, 2024 at 6:28 PM


Topic: Connecting Multi amps with Remote On

Posted By: racer427
Subject: Connecting Multi amps with Remote On
Date Posted: August 04, 2004 at 7:44 PM

I am trying to install 2 more amps to power the front and rear channels. When I chain the remote on link I get a weird noise through the subs even when the other amps are not on.  When hooking up multiple amps do I need to use a heavy gage wire for the remote on? Currently using 18 gage that came with the amp kit that I bought.

-------------
Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds



Replies:

Posted By: another-kelly
Date Posted: August 04, 2004 at 10:53 PM
either use a relay (1st choice) or use the +12V igniton wire to turn on the amps [the red one on most aftermarkets (2nd choice)]




Posted By: styper
Date Posted: August 05, 2004 at 4:09 AM
I would recommend using a relay.

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S type R.




Posted By: MBZ oe
Date Posted: August 05, 2004 at 4:14 AM
Can' the high end head unit manufacturers get the drift and wire heads with a remote wire that would handle several amps?

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BOOM, BOOM, BOOM BOOM....




Posted By: fuseblower
Date Posted: August 05, 2004 at 9:29 AM
Sounds like a problem other than your amp turn on wire if you hear the noise when the amp are off.  But in order to get a better understanding of your problem can you give in detail the noise.  Is it a whine, thump and does it increase as you accelerate.




Posted By: kgerry
Date Posted: August 05, 2004 at 10:27 AM

you have a consensus.... wire a relay to the HU's remote lead and let it carry the load of mulitple amps.....



-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979




Posted By: racer427
Date Posted: August 05, 2004 at 11:53 AM

Thanks guy's, I appreciate the information. What type of relay will I need to use? I don't want to sound stupid but, it has been several years since I have delt with installs. I have done a few systems in the past (at least 10 years ago) and have since fell away from booming car systems and dove into home theater systems.

 The last system that I had in my 95 Z28 consisted of all MTX products including 3 mtx amps but, I can't remember how I had them hooked up.

  I will try the relay thing.

 As far as the noise that I am getting, it is a short whine then a thump. It goes away for a few seconds then repeats it's self. The car wasn't running at the time. Had the ignition in acc. And only had the daytona firestorm amp hooked up with no speaker leads to it. It is a used amp that I picked up and I was testing it to make sure that it fired up ok. I was told that the amp is in great working condition. Maybe there is actually a problem with it?



-------------
Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds




Posted By: ice4life8269
Date Posted: August 05, 2004 at 12:06 PM

yeah the amp sounds like it could cause the problem. do you have all of the amps grounded together? if you do, try separating them... 



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Posted By: another-kelly
Date Posted: August 05, 2004 at 12:13 PM




Posted By: kgerry
Date Posted: August 05, 2004 at 12:25 PM
if you were running this one potentially problematic amp "no load" then where exactly were you hearing this whine -then thump... from the amp itself?   was the HU turned on?

-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979




Posted By: 94legend
Date Posted: August 05, 2004 at 12:55 PM
posted_image

This may sound newbish, probably it is. But how do you wire that thing?
I've looked at the diagram on the webpage that you have posted. But can't imagine how to wire that thing. Do you just run the wire through the holes and loop it around it?
Do you have a piciture of the relay wired?




Posted By: kgerry
Date Posted: August 05, 2004 at 1:04 PM
spring 2 bucks and buy the relay socket with the wires

-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979




Posted By: 94legend
Date Posted: August 05, 2004 at 1:20 PM
kgerry wrote:

spring 2 bucks and buy the relay socket with the wires


I need a actual visual image or different description, your terms/words are killing me!
I've never came across that relay before. Sorry   = /




Posted By: kgerry
Date Posted: August 05, 2004 at 1:32 PM

imagine a socket that this relay plugs into.... imagine this "socket" has 5 wires coming out of it, one for each leg of the aforementioned relay.....this way you can remove and replace defective relays in 2 seconds with no rewiring.....

i'm surprised that you have never come across a standard 30/40 volt automotive relay before...  they are possibly the most most common relay used in the world

you may wish to check the link on the left top under Basics that covers relays are their myriad of applications....



-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979




Posted By: 94legend
Date Posted: August 05, 2004 at 1:46 PM

So if you were to get the relay you will need to purchase the "socket" inorder to run this relay.  yeah i am surprised as well. I've might have seen it in a motor of car but not know its actual name and term of use.

THe BASICS does not help it all.

You metioned about removing or replacing defective relays in 2 seconds with out rewireing.

So if there is a defective relay you just unplug the relay from the socket and insert a new one???

Have any other reference sit about the socket relay ?





Posted By: racer427
Date Posted: August 05, 2004 at 3:03 PM
The noise is comming through the subs. Both amps are grounded through a distrabution block.

-------------
Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds




Posted By: 94legend
Date Posted: August 05, 2004 at 3:15 PM
From the distrobution block, where is it grouned it to, the battery or the chasis?




Posted By: racer427
Date Posted: August 05, 2004 at 4:02 PM
It is grounded to the chassis.

-------------
Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds




Posted By: racer427
Date Posted: August 05, 2004 at 4:04 PM
At this point I am starting to think that The amp is toast. I hooked it up and used the ignition wire just to remote it on and the amp turns off and on and off and on.

-------------
Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds




Posted By: racer427
Date Posted: August 05, 2004 at 4:19 PM
Ok, now I hooked up an old Jensen amp that I had laying around in the garage and I get the same result, it turns off and on and off and on?????????????????????????????????????????????????????????????

-------------
Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds




Posted By: another-kelly
Date Posted: August 05, 2004 at 5:35 PM




Posted By: another-kelly
Date Posted: August 05, 2004 at 5:37 PM
best buy and other stores sells the relay with socket for about $12.99 (last i knew anyways). a little bit steeper in price but you don't have to ship and wait.




Posted By: another-kelly
Date Posted: August 05, 2004 at 5:46 PM
have you checked the ground? it might have been okay before but not with the three amps. use dmm and check the ground-battery resistance. make sense? think of the chassis as one big resistor. the ground block is one side and the negative battery terminal is another. also you said there was still the thumping with no speaker leads hooked up? does this mean you're using a high level input? a LOC? the amp is creating the sound with only power hooked up and no audio signal? 




Posted By: racer427
Date Posted: August 05, 2004 at 6:12 PM

The noise is coming from the fosgate amp hooked to the subs but, only when i connect another amp to the remote on circuit. I only had the power, ground and remote link hooked to the Firestorm amp.

   I will try grounding the other amps to the batter and see what results I get there. If I remember correctly, I had the ground running from the battery to the dist. block in my Z28. Maybe that is why I didn't have any problems with that set-up.



-------------
Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds




Posted By: racer427
Date Posted: August 05, 2004 at 6:14 PM
Untill I get this resolved I guess that I will just run the Components off of the radio power.

-------------
Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds




Posted By: fuseblower
Date Posted: August 06, 2004 at 9:14 AM

Racer, I am kind of lost with all of the posts.  Are you trying to find out what is causing a system thunp and whine or trying to see what is causing your amp to turn on, off, on, off. 

Please elaborate a little more.

If you are getting a whine check your RCA's, Ground wire all other wiring for defects.  Lose wiring or bad wiring can cause a whine.  If your system is not grounded good you can also get an engine whine.

If your amp cuts on, off, on this could mean that you have a bad power connection or that your power supply in your amp is blown.





Posted By: racer427
Date Posted: August 08, 2004 at 11:20 AM

Hey guy's, Just wanted to say thanks for all the help.

 I finally figured out the problem. The amp is DEAD. I do beleive the power supply is shot and I am not an electronics expert so, I am just gonna trash the amp.

  I finally finished fabbing up a set of door baffles for the components and got them installed. I hooked them up to the head unit and suprissingly, they don't sound all that bad. I am sure that they will still sound much better hooked up to a decent amp.

   ANY one have a decent 4 channel for sale CHEAP? posted_image



-------------
Alpine CDA-9833 HU
Diamond Audio M661 Components
MTX Thunder T6.6 Components:rear fill:
Cadence Q400 4 Channel Mains + rears
Thunder 801D Subs
MTX 1004 10's
Dual 4g wire to rear
4g grounds





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