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Old 18th September 2013, 02:03 PM   #191
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Join Date: Mar 2011
Location: Somewhere in Quebec
hi everyone
little update
I have taken the measurments of the alpair 12p. Ive attached the measurments.
They show me basically a problem from 150hz to 600hz. Ive apply EQ (using Electri-Q) in the problematic area and those speaker have come to life. The sound is much more balanced and the presentation have much more presence du to the upper bass and lower midrange EQ. I recommend everyone who has build those speakers to add around 3 db at 150hz, 3 db at 300 and 500hz, or something like that, the presentation is much more involving.

Last edited by murphythecat8; 18th September 2013 at 02:07 PM.
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Old 18th September 2013, 03:25 PM   #192
toobhed is offline toobhed  United States
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Very interesting, thanks for taking the time to take and post measurements. But, could any of these issues be linked to your room response?
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Old 18th September 2013, 04:55 PM   #193
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The room dominates < 300Hz, so YMMV as always.
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Old 18th September 2013, 05:29 PM   #194
chrisb is offline chrisb  Canada
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Sometimes even less than a foot of change of placement, particularly in regard to all boundaries, can make substantial differences in both measured and perceived response at listening locations.

As Scott says, the room dominates, and while acoustic treatments are certainly available to tame / smooth bass response, they can often occupy far more space than is acceptable when WAF constraints apply.
on hiatus
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Old 18th September 2013, 06:09 PM   #195
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Originally Posted by Scottmoose View Post
The room dominates < 300Hz, so YMMV as always.
Dear Scott,

Could you please look in the other thread " Pensil and superpensil for A12.2 P " for a minute to help me out regarding cabinet stuffing?

Thank you very much
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Old 20th September 2013, 01:24 AM   #196
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the measurments were taken around hallf meter away from the drivers, i doubt the room is having a effect. ive taken several measurments and close mic'ed, the response is really similar... the measurments taken at listening position is really different, but the one iv attached is closed mic.
i think the measurments look quite nice, and by applying a bit of eq at 150 hz, 300hz, 500 hz, sound is better.

Last edited by murphythecat8; 20th September 2013 at 01:27 AM.
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