Do I need a relay?
08-02-2003, 09:58 PM
#1
0 Watt CAFz'r
Thread Starter
Join Date: Apr 2003
Posts: 28
Ok.. Here's the current setup. I'll be using a JBL 600.1 and a Clarion Power APX401.4.. I'm planning on building a Plexiglass amp rack for them and I'll need to use some cooling fans. Do you think I could hook up two cooling fans (would that be enough?)to my remote turn on wire or would I need a relay to do all this?
My HU is a Pioneer DEH740MP.. FYI.
My HU is a Pioneer DEH740MP.. FYI.
08-03-2003, 05:11 PM
#5
2000 Watt CAFz'r
Join Date: Jan 2001
Posts: 2,026
Originally posted by ShYYLO:
How did ya figure out you needed a relay ? and not be sure if ya needed it ?
SHY
How did ya figure out you needed a relay ? and not be sure if ya needed it ?
SHY
As for the earlier thing about frying the remote line, most decks have protection. I have overloaded the remote wire on 2 HU's
The first was a short. All it did was it popped the ACC fuse. Fixed the short, replaced the fuse and everything operated normally - nothing fried.
The second one was on my current Kenwood. Ironically, I overloaded the remote wire by having two many relays connected - 3 relays drawing 75 mA and 1 realy drawing 150 mA (total 375 mA). All that happened was when I fired up the deck the relays clicked on and then off again. The remote line realized it was overloaded and shut down. Everything else still worked speaker/RCA outs, CD radio - just it cut the power to the remote. The remote reset itself when I turned it off.
TO solve the problem - I added a fifth relay that gives power to the other 4 no problem.
In regards to current draw - my Kenwood was able to run two relays combining to 225mA. But when I added the other 2 it overloaded. Hope that gives you an idea as to the type of current you can expect from a remote.
08-04-2003, 06:03 AM
#7
50 Watt CAFz'r
Join Date: Jun 2003
Posts: 307
I built a amp box with vents in the bottom and and ported it at the back, installed a fan that I stripped out of a computer power supply box, bought at the local pawn shop for $5.00. I matched the amp draw of the fan to the remote wire and it has worked fabiously for over 2 months now. The only draw back is when I power down the system, the fan shuts off. No continued cooling, sigh. The local electronic supply house wants $80.00 or more for a delay shut-off relay. I'm debating on crusing junk yards for the relay from a Caddie type car with delay shut-off headlights.
08-04-2003, 09:20 AM
#8
Guest
Posts: n/a
Maltesechicken - I have to wonder what the heck you have in your car to need 4 relays to work it 
Glad you figured the proper way to do it eventually though. [img]graemlins/thumb.gif[/img]
Generally if I have more than two items being switched by the remote lead I will add a relay. It only takes a minute and eliminates problems. [img]graemlins/dunno.gif[/img]
Glad you figured the proper way to do it eventually though. [img]graemlins/thumb.gif[/img] Generally if I have more than two items being switched by the remote lead I will add a relay. It only takes a minute and eliminates problems. [img]graemlins/dunno.gif[/img]
