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Old 17th September 2009, 10:33 AM   #11
AllenB is offline AllenB  Australia
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Originally Posted by richie00boy View Post
Hmm thats a very bad way to mount the drivers, they need at the very least a baffle to prevent front to rear cancellation.
The original drivers were mounted this way. If anything, they sound more solidly mounted than if they were on the trims.

One thing though, the original speakers had open cell foam stuck around the outside of the roll surround, reaching forward to the trim. Maybe I should try this.

This could be your problem but equally standing wave nulls at the measurement position could be too.
I haven't been able to re-measure yet but if this is the case, will I just have to live with EQing for my location at the expense of complexity and other seats sounding out of balance?

This problem also goes for my sub/woofer. I wish it didn't sound so much louder in the back.

EDIT: Maybe I should stuff my doors, they could be causing not only cancellation but peaks in the upper midrange?

Last edited by AllenB; 17th September 2009 at 10:42 AM.
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Old 19th September 2009, 02:54 AM   #12
AllenB is offline AllenB  Australia
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I did those things (except I used soft but very dense foam) and I remeasured the response.

The response is flat and normal around 400Hz both nearfield and at 30cm but it is not level at my listening position as you guessed.

Would I be best doing anything about it?
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Old 19th September 2009, 09:38 AM   #13
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Old 19th September 2009, 11:53 AM   #14
AllenB is offline AllenB  Australia
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OK, that's great.

I've been working on smoothing the upper midrange and the sound seems to be coming together. The problem in the lower midrange is less of a concern and I've been able to get back to listening. I adjusted my crossover to ease the lower mids back up a little. Just a few more tweaks, I think...
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