1.800.555.8260 We're here to help
As a registered member, you’ll be able to:
Ok this my be a crazy question but I figured this would be the best place ask it. I have a Kenwood Excelon x700x5 amp and I want a quick way to cut off the subwoofer, " is case of law enforcement or what not". I know the double din I have has a subwoofer off setting but it would take to long to shut off quickly. I have done it many times before by putting a toggle switch on the remote wire before the amp. The problem is I have a 5ch amp and if I put a toggle switch on the remote wire it will shut off all the sound, not just my subwoofer, and I don't want to do it that way.
So the question I have is can I put a 2 way toggle switch on one of the speaker wires for the sub (pos or neg), that way when I run the neg straight to the speaker and run the pos through the toggle switch and back to speaker. Would there be any problems or power loss by doing this? Also if I have a toggle switch with an led light on it can it still be used? Or do I just need a 2 prong switch, either on/off. Thx for your help!,
Can't effectively put a toggle switch inline on the sub's wiring. I'm unable to locate the amp you say you have, but either way, you have way too much power going through the wiring for the sub than a typical toggle switch could handle.
I'd recommend buying a universal RCA gain control knob and wire it into the RCA's to the amp's sub section. This would give you much easier access to sub volume control and turning the gain knob all the way down, while it may not shut the sub off, would lower it to a MUCH lower level.
Something like the PAC LC1 would do the job.
Scott F.Also if I have a toggle switch with an led light on it can it still be used?
First off, switches can light up different ways. Some switches have separate terminals for the LED - these will work fine. Most switches have a GND wire and when connected, the switch lights up when the switch has power and is closed. I don't think this would work with the switch directly (not sure what AC current will do to the LED), but it should work with a relay - I will cover that below.)
@Weigel21 - I think it's probably a Kenwood X700-5 amp.
There are two ways to do it:
A capable switch inline with the Pos (or Neg) wire like you said would probably work.
Assuming 500W @ 2-ohms, you are going to see 31.62278 VAC and 15.8 Amperes through the switch. I actually think most switches will handle that - I seem to remember most of them rated for 250 VAC, and this is a basic one and supports 20 A.
There is a simpler solution, though, it's called a RELAY!!!
Standard wiring (Normally Open Contacts):
Alternate wiring (Normally Closed Contacts) (slightly preferred):
Hope This Helps!!!
Anyone else have suggestions?
2002 Ford Focus JVC KD-A815 Sony CDX-GT410u Sony XT-100HD HD Tuner Stock speakers, no amp, no subs
The amp I have is a Kenwood Excelon X700-5 50W x 4 + 500W x 1 @ 2 Ohms car Amp. The question I have is with running the Universal RCA gain will i run into any power problems? Will it take any power away from my amp/sub? If not I would have to say this looks to be the best option. They are pretty cheap on Amazon also.
You are (SHOULD BE) already running 12-gauge wiring to the sub. Running the wire from the amp (trunk?) to the dash and back to the sub (trunk) is going to increase the wire length, which means you need thicker wiring even than 12-gauge.
I was told by crutchfield that 14g wire should be plenty to power the sub. I actually ended up getting enough 14g to rerun my entire system (dash/soundbar speakers) with it.
All the other info in your comment seems a little complex. I am no audiophile so some of it seemed "greek" to me. But I may of just read it to fast.
The universal gain won't cause any power problems. Things I don't like:
14g is probably okay. BCAE1 is pretty conservative in the ratings, but you don't want to run large wiring thru the car (for a power circuit).
Scott F.All the other info in your comment seems a little complex
Rats, I tried to make it simple.
Let me try to break it down a little more and then see if you re-read it and it makes sense.
You wanted to use a simple toggle switch to turn off the power from the amp to the sub. That could work, but you are running a lot of power through the switch - generally not a good idea. The solution is to use a relay. This is like a remote switch. When the relay see power from a small current switched, it closes and let's the high power (amp wires) go to the sub.
A similar example if your headlights - rather than running thick wiring behind the dash to your headlight switch, the small wires at the switch activate a relay which sends battery power to the headlights.
Essentially, there are two ways to wire the relay up.
The most common way, the relay contacts between the amp and the sub would be open. A toggle switch is wired between the remote wire of the radio and the relay. When the radio is on, power flows to one leg of the switch. When the switch is close, it activates the relay and turns the sub on. Open the switch and the relay opens and the sub turns off.
The other wiring is slightly different. The relay contacts between the sub and the amp are normally closed. And the toggle switch is normally open. When you close the toggle switch, power flows to the relay and OPENS it so the sub stops playing.
There are really only two functional differences in the wiring:
You actually had the concept correct originally, it's just a different way of accomplishing it.
Because my name is on the business, I work hard to make sure you get the best possible shopping experience. I look forward to hearing your comments .
- Bill Crutchfield Founder and CEO
Browse our latest Discovery Book catalog online
Send me a FREE Discovery Book catalog by mail
Email me exclusive offers, deals and expert reviews
Copyright ©1996-2014, Crutchfield New Media, LLC All rights reserved. Crutchfield is a trademark of Crutchfield New Media, LLC.