4 ohms

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mini14

Copper - Posts: 120

Joined: December 31, 2004

Location: United States

Posted: March 22, 2005 at 9:48 PM / IP Logged

I was wiring some 4 ohm SVC subs yesterday and I was thinking. For example to bridge a 2 - channel amp to 2 ohms, does the load have to be two subs or can it be a resistor or some other type of load?

stevdart

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Joined: January 24, 2004

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Posted: March 22, 2005 at 10:03 PM / IP Logged

The load on an amplifier should be the nominal impedance of any number of connected drivers, not auxillary resistors. There is such a vast supply of subwoofers now with SVC 3,4, 6 ohm, DVC 2,3,4,6 ohm coils...did I get them all?...not yet...there are even drivers with 4 coils... that the possiblility of not being able to match the impedance you want to an amplifier is totally NIL. And do you mean you want to bridge a two channel amp to 2 ohms per channel with a 4 ohm load? One of your subs should be bridged to a two channel amp for a rated low impedance limit of 4 ohms bridged. If you use two subs you will have to wire them in series to 8 ohms before bridging. Don't wire your subs parallel to 2 ohms and then bridge that load onto your two channel amp. You'll kill it.

But if you have a two channel amp that is rated to 1 ohm per channel post up what it is, please. I'd like to see it.

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kfr01

Gold - Posts: 2,121

Joined: April 30, 2003

Posted: March 22, 2005 at 10:31 PM / IP Logged

Stevdart is right on with this one. Not many $1k + 2 channel amplifiers are 2-ohm stable bridged.

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mini14

Copper - Posts: 120

Joined: December 31, 2004

Location: United States

Posted: March 22, 2005 at 10:33 PM / IP Logged

ha no I made a mistake I was only making an example, though a bad one all I wanted to know was if i could accomplish certain impedences without multiple speakers, such as having a mono 2 ohm amp, and one svc 4 ohm sub could u then take a blown speaker and a good one and wire them (in my mind the good speaker would get all the power)?

mini14

Copper - Posts: 120

Joined: December 31, 2004

Location: United States

Posted: March 22, 2005 at 10:36 PM / IP Logged

I appreciate the replies, you guys are helpful. I saw on this website once these guys submersed a computer in vegetable oil to cool it during overclocking. It was succesful and NEVER overheated. Could this same concept be applied to an amp, and drive it down to say .5 ohms without it blowing up?

DYohn

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Posted: March 22, 2005 at 10:36 PM / IP Logged

Nope.

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oonikfraleyoo

Gold - Posts: 1,069

Joined: January 04, 2005

Location: United States

Posted: March 22, 2005 at 10:45 PM / IP Logged

Gotta love short sweet answers.

Nik

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Ravendarat

Platinum - Posts: 2,806

Joined: February 23, 2004

Location: Canada

Posted: March 22, 2005 at 10:52 PM / IP Logged

mini14, I think you were taken for a ride. You cant simply submerge a computer in vegatable oil to avoid over heating. The computer is gonna short out. While vegatable oil isnt gonna be the best conducter on earth, it is still gonna conduct a minor amount of electricity that is gonna be more than enough to fry something as sensitive as a computer. Feel free to correct me if I am wrong here, but I doubt it. Its like guys who say they put their computers in the fridge. While its possible to do, if the fridge gets to cold or if their is to much humidity in the air when you take the computer out your gonna get either frost or condensation, both of which will spell the end of a computer

double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer

mini14

Copper - Posts: 120

Joined: December 31, 2004

Location: United States

Posted: March 22, 2005 at 11:28 PM / IP Logged

well its just theories here doesn't really have to be vegatable oil i see what you are saying but oil wouldn't carry any current and any water in the oil would clearly be seen because they dont mix at all. i'd like to try such a thing i have an old 2150x thunder amp, would it suffice as a candidate? am i crazy for trying? or is there some mnute possibility that this thing may work out?

by the way the comp was on some modding website i dont remember which one, the disk drives of course weren't submersed it looked believable o well they coulda hoaxed it

once again thanks a lot for the replies

oonikfraleyoo

Gold - Posts: 1,069

Joined: January 04, 2005

Location: United States

Posted: March 22, 2005 at 11:38 PM / IP Logged

What you are thinking of is hydrofluoroether. It is made by 3m and is designed to transfer heat while not conducting electricity. Submerged computers are acctually becoming quite common with the gamers that love to overclock.

::EDIT:: Enough for your amp would run you around $200.

Nik

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