using resistors to get desired load?

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Ketel22

Silver - Posts: 976

Joined: August 23, 2003

Location: United States

Posted: September 23, 2003 at 1:25 AM / IP Logged

is it sensible or safe to use dummy resistors to get a desired load on an amp, if so what effect will it have and what type is advised? http://mcm.newark.com/NewarkWebCommerce/mcm/en_US/support/catalog/productDetail.jsp?id=28-0750

mcmelectronics has resistors for audio i want to know if they can be used in series or parallel with subs and if they will afftect the quality audio produced by the amp.

if it makes a difference i am currently running a fockford 1000a 2 channel with 2 kappa perfect 12.1 the reason i have the two channel amp is i intend to purchase two more kappa's

TIA I really am curious about this one.

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go2pac

Copper - Posts: 179

Joined: May 04, 2002

Location: California, United States

Posted: September 23, 2003 at 1:47 AM / IP Logged

Using resistors is wasted power, more of a cheap heater if anything. You may get more power out of the amp but loudness wise, it will be the same volume coming out of the speaker.

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Ketel22

Silver - Posts: 976

Joined: August 23, 2003

Location: United States

Posted: September 23, 2003 at 3:08 AM / IP Logged

what do you mean by loudness and volume, how does this relate to subs?

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NowYaKnow

Gold - Posts: 1,217

Joined: December 18, 2002

Posted: September 23, 2003 at 4:55 AM / IP Logged

Could you do it safely? Yes.

Is it sensible? No.

By the way from what I remember about that amp you would want more than 100W resistors..I don't think you want to blow one of those..Either way definately a waste of time and money IMO. The dumy resistors will basically get warm and sort of hum..(Not that you'd hear it over your subs anyway..) 2 Channel amp, 2 kappas - where's the problem? I would definately just wire your subs up to the amp as is until you get the other 2..Good luck

auex

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Joined: December 23, 2002

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Posted: September 23, 2003 at 6:15 PM / IP Logged

Basically if want you get a resistor to raise the power of the amplifier, here is what will happen. Let's say you have one sub at 4 ohms and your amp puts out 100 watts at 4 ohms, so you put a 4 ohm resistor parrallel to the sub. Now your amp is putting out 200 watts, 100 of which will go to the sub and 100 will go to the resistor. Do you get what is being said here?

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Ketel22

Silver - Posts: 976

Joined: August 23, 2003

Location: United States

Posted: September 23, 2003 at 7:31 PM / IP Logged

thanks for the replies what i understand is that the resistors are useless?

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wvsquirrel

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Joined: July 27, 2002

Location: Florida, United States

Posted: September 24, 2003 at 2:08 PM / IP Logged

pretty much. they're about a waste of space

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using resistors to get desired load?

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