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Old 9th May 2007, 03:44 PM   #1
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Default Correct load impedence

I'm a newbie so please bear with me here.
I have a Sony surround sound amp. I wanted to improve the quality of sound when listening to music so I built a set of speakers. I have two drivers per enclosure wired in parallel, they are 4 ohm drivers. It occurred to me this makes the load impedance 2 ohms. Should I put a 2 ohm resistor in there to bring the load back up to 4 ohms? Would it be better to wire the drivers in series, or would that not work properly? Thanks.
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Old 9th May 2007, 03:53 PM   #2
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Hi,

Are these full range units?
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Old 11th May 2007, 08:31 AM   #3
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I''m sorry, I don't know what you mean by "full range". Where can I find terminology of speakers? Thanks.
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Old 11th May 2007, 08:31 AM   #4
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Okay, never mind, a quick Google search tells me "full range" means the drivers are capable of producing the entire audio range, which in my are case they are.
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Old 11th May 2007, 04:47 PM   #5
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I would try running them in series.
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Old 11th May 2007, 05:32 PM   #6
Hartono is offline Hartono  Indonesia
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given the choice of serial connection or parallel+resistor connection :


1. If you do connect in parallel+2 ohm resistor, your resistor will dissipate a lot of power and should be rated accordingly (watts) ,plus you will lose 50% or more power in that resistor. without the resistor the load will be to hard for amp to drive. meaning not good for amplifier life.

2. I agree with Cal Weldon, I also recommend series connection.
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Old 12th May 2007, 01:39 PM   #7
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Quote:
Originally posted by Cal Weldon
I would try running them in series.

Quote:
Originally posted by Hartono
given the choice of serial connection or parallel+resistor connection :


1. If you do connect in parallel+2 ohm resistor, your resistor will dissipate a lot of power and should be rated accordingly (watts) ,plus you will lose 50% or more power in that resistor. without the resistor the load will be to hard for amp to drive. meaning not good for amplifier life.

2. I agree with Cal Weldon, I also recommend series connection.
Thanks for the replies.
I rewired them from parallel to series and they sound just as good. Now I will worry a lot less about my amp. Thanks again guys.
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Old 12th May 2007, 04:53 PM   #8
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Did you happen to notice if you lost a wee bit at the top end?
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Old 12th May 2007, 05:03 PM   #9
Hartono is offline Hartono  Indonesia
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I never thought of that before (haven't been putting tweeter in series)

how does that happen ? (losing the top end a bit)
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Old 12th May 2007, 05:10 PM   #10
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I was just thinking the extra inductance of two voice coils might filter it.
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