What impedence for bridged subs/amp

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zr-deuce

Member - Posts: 18

Joined: December 30, 2003

Location: United States

Posted: February 25, 2004 at 6:04 AM / IP Logged

its an autotek sx-475 4ch amp, im gonna run 2 subs

200 Watts X 2 Channels @ 4 Ohms Bridged

So what impedence subs do i need to get?

DVC 2ohm or 8ohm?

or SVC 4ohm?

Also i was reading up on bridging and it talked about mono being different but the technical talk is a bit much for me to comprehend.

Heres what my sub reads on the side

(+) (-) (+) (-) (+) (-) (+) (-)

(+)--------MONO-------(-) (+)--------MONO--------(-)

Is this the correct setup for bridging?

I appreciate any help you guys can give me

zr-deuce

Member - Posts: 18

Joined: December 30, 2003

Location: United States

Posted: February 25, 2004 at 6:07 AM / IP Logged

(+) (-) (+) (-) (+) (-) (+) (-)

(+)--------MONO-------(-) (+)--------MONO--------(-)

sorry this is what it should look like, my spacing got messed up in the previous post

customsuburb

Gold - Posts: 1,813

Joined: January 17, 2004

Location: United States

Posted: February 25, 2004 at 8:21 AM / IP Logged

To get a 4 ohm load you will need to use either 2 ohm DVC subs or a single voice coil 4 ohm speaker. If you get 2 ohm DVC subs then wire one each like this to your amps bridged channels: What impedence for bridged subs/amp -- posted image.

What impedence for bridged subs/amp -- posted image.

zr-deuce

Member - Posts: 18

Joined: December 30, 2003

Location: United States

Posted: February 25, 2004 at 10:04 AM / IP Logged

So when a DVC sub is specified as

"2ohm or 8ohm rated" does that mean one terminal is 2 ohm and the other is 8 ohm ? - sorry for the newb question

zr-deuce

Member - Posts: 18

Joined: December 30, 2003

Location: United States

Posted: February 25, 2004 at 10:08 AM / IP Logged

i made a mistake in my first post about the way it is setup

i said this is how my sub looks on the side...i meant to say this is how my AMP looks - i dont know why i cant edit my posts

94bonny

Copper - Posts: 108

Joined: August 24, 2003

Location: United States

Posted: February 25, 2004 at 10:26 AM / IP Logged

to run 2 subs at 4 ohms you need to have 2- 8 ohm subwoofers or 2 dvc 4 ohm subs. i would suggest going with 2-8ohm subs because it would be alot easier to wire the 8 ohm subs in parralel to get your 4ohms rather than 2 dvc 4 ohm subs in series/parralel to get your 4 ohms.

soccer_aholic

Copper - Posts: 71

Joined: February 25, 2004

Location: Canada

Posted: February 25, 2004 at 11:12 AM / IP Logged

Ok you say you want subs right. so i am assuming that you want 2 subs. If you are hooking up 2 subs then DO NOT go with 2 single 8ohm subs or 2 dual 4ohms subs. that is BAD. Your amp runs at 200Watts x 2 @ 4 ohms. Thsi means 4 ohms per channel. So you need either 2 single 4 ohm subs or 2 dual 2 ohm subs. Other wise you will only be getting half the power from your amp. single 4 ohms will be a little easier to wire up, but if you do go with dual 2 ohm subs it is still very simple, plus in the future if you choose to get a different amp it will leave you with much more wiring options with the dual 2ohms.

Soccer_aholic What impedence for bridged subs/amp -- posted image.

zr-deuce

Member - Posts: 18

Joined: December 30, 2003

Location: United States

Posted: February 25, 2004 at 12:26 PM / IP Logged

Okey doke -

My last question - can a DVC sub able to use only one voice coil?

Like if i buy a 2ohm DVC sub .... is it possible to only use one voice coil on a 2 ohm channel?

customsuburb

Gold - Posts: 1,813

Joined: January 17, 2004

Location: United States

Posted: February 25, 2004 at 12:30 PM / IP Logged

Its not reccomened. Wiring it like the diagram above would give you the best results.

soccer_aholic

Copper - Posts: 71

Joined: February 25, 2004

Location: Canada

Posted: February 25, 2004 at 12:32 PM / IP Logged

you can run one coil to one channel as long as you are running all the coils on the sub. So if you buy 2 dual 2 ohm subs, that equals 4 coils. So with your four channel amp you can run one channel to each coil.

Soccer_aholic What impedence for bridged subs/amp -- posted image.

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