substituting 4ohm for 8ohm midbass driver - diyAudio
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Old 18th December 2005, 01:33 PM   #1
sreten is offline sreten  United Kingdom
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Join Date: Nov 2003
Location: Brighton UK
Default substituting 4ohm for 8ohm midbass driver

Hi all,

say I want to replace an 8 ohm midbass driver with a nigh
on identical unit but it has 4 ohm nominal impedance.

I have the crossover details for the 8 ohm unit. I don't think
I should simply scale the crossover parts to 4 ohm because
isn't the real issue the inductance of the drivers ?

So my question is : what would be the typical difference in
inductance of 8 and 4 ohm versions of the same driver ?

(no sensistivity issues as the tweeter has an L-pad)

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Old 19th December 2005, 01:27 AM   #2
Volenti is offline Volenti  Australia
diyAudio Member
Join Date: Aug 2003
Location: Australia
You will need to modify the x-over to suit the 4 ohm impedance, the inductance of the driver does play a role but it's not primary one.

I would assume the 4 ohm version would have a lower inductance all else being equal.
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