subs don't always work

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I Am

Member - Posts: 34

Joined: February 29, 2004

Location: Canada

Posted: March 07, 2004 at 2:00 AM / IP Logged

sometimes my subs don't work.... they cut out.......and when I turn my bass on my deck up they kickin in and then they cut out again......

pioneer86

Member - Posts: 22

Joined: March 07, 2004

Location: United States

Posted: March 07, 2004 at 2:25 AM / IP Logged

I've never had that problem before, but one thing I would check would be the wiring. Make sure nothing is shorted out, and you have thick enough wiring to support what you're trying to do. You might also have a bad ground to your amp.

netboy

Copper - Posts: 108

Joined: March 02, 2004

Location: United States

Posted: March 07, 2004 at 3:08 AM / IP Logged

amp overheating then cooling down and firing up again?

Memphis MC-1300

2 12" JLw6v2

Diamond audio M3 6x9

Diamond audio M3 5.25 components

Audio control Matrix

Carputer

97neon

Copper - Posts: 195

Joined: June 08, 2003

Location: Canada

Posted: March 07, 2004 at 7:40 AM / IP Logged

your probably clipping the amp, amps probably not enogh power for the subs, whats brand of subs and amp, and what are the model numbers? your gains are probably to high

DYohn

Moderator - Posts: 10,741

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Joined: April 22, 2003

Location: Arizona, United States

Posted: March 07, 2004 at 9:38 AM / IP Logged

Clipping, yes. Not enough power? No. Gain problem? Most likely. You have the input gain on your amp set too high and the amp is going into protection. OR, you have too low an impedence load on the amp. What is your setup?

I Am

Member - Posts: 34

Joined: February 29, 2004

Location: Canada

Posted: March 07, 2004 at 10:42 AM / IP Logged

kenwood kfc-w3005.........and a kicker kx150.2......

DYohn

Moderator - Posts: 10,741

Joined: April 22, 2003

Location: Arizona, United States

Posted: March 07, 2004 at 11:40 AM / IP Logged

OK. That sub is a DVC 4-ohm speaker, which means you can wire it either at 2 ohms or 8 ohms. The amp is capable of being bridged, but into no less than a 4-ohm load. So if you have the sub wired for 2-ohms (both voice coils in parallel) and have that bridged to your amp, you are overloading the amp and it will cut out. For this configuration, you must wire the sub at 8-ohms (VCs in series) to the amp. You will get approximately 75 watts to the amp (peak) with this setup. This is not a good match.

Is this the same system you are asking about enclosure types on another thread? If so, what kind of enclosure is it in now?

I Am

Member - Posts: 34

Joined: February 29, 2004

Location: Canada

Posted: March 07, 2004 at 2:14 PM / IP Logged

the specs on the sub say its rated at 4 ohm.... its in a crappy home made box (not outta mdf) it made outta plywood and it's 3ft by 1.5ft....freakin huge.........

I Am

Member - Posts: 34

Joined: February 29, 2004

Location: Canada

Posted: March 07, 2004 at 8:24 PM / IP Logged

could it be that its cold....I live in northern alberta canada.............

netboy

Copper - Posts: 108

Joined: March 02, 2004

Location: United States

Posted: March 07, 2004 at 9:51 PM / IP Logged

i dont think that cold would hurt it, maybe heat, but not cold

Memphis MC-1300

2 12" JLw6v2

Diamond audio M3 6x9

Diamond audio M3 5.25 components

Audio control Matrix

Carputer

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