M22 technical question
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Joined: Mar 2005
Posts: 7
regular
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OP
regular
Joined: Mar 2005
Posts: 7 |
Hi all,
I just picked up a pair of m22's, and I noticed something strange. When I ran a frequency sweep, the volume dropped off at around 125Hz, then came back and stayed steady until around 80 (where it started to drop off at their low end). Could it be my room acoustics, or might something be wrong with my m22's?
Thanks,
Tom
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My stuff:
Onkyo TX-SR701
Axiom M22ti / VP150 / QS8
SVS PB12-Plus/2 sub
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Re: M22 technical question
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Joined: Jul 2002
Posts: 958
aficionado
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aficionado
Joined: Jul 2002
Posts: 958 |
pschar,
Are you using a SPL meter to measure the levels?
Side note to pmbuko: does this post bring me back to active status?
I live the life I love and I love the life I live.
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Re: M22 technical question
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Joined: Mar 2005
Posts: 7
regular
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OP
regular
Joined: Mar 2005
Posts: 7 |
No, just my ears right now. I have to go pick one up. If I sit very close to the speaker, I don't hear a change; only when I'm at my listening distance of around 12'.
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My stuff:
Onkyo TX-SR701
Axiom M22ti / VP150 / QS8
SVS PB12-Plus/2 sub
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Re: M22 technical question
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Joined: Jun 2004
Posts: 1,805
connoisseur
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connoisseur
Joined: Jun 2004
Posts: 1,805 |
Mike
I was wondering where you've been.
LIFE IS SHORT. DON'T BE A DICK.
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Re: M22 technical question
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Joined: Jul 2002
Posts: 958
aficionado
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aficionado
Joined: Jul 2002
Posts: 958 |
A meter will be very helpful in determining just how much (if any) it is "dropping off". Listening to frequency sweeps by ear alone can be very misleading. In all probability, at the listening position there is a null at 125Hz. Get your self a meter. They are very useful and fun to use (in a hobby kind of way).
I live the life I love and I love the life I live.
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Re: M22 technical question
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Joined: Jul 2002
Posts: 958
aficionado
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aficionado
Joined: Jul 2002
Posts: 958 |
Hey bro' bray!
Just been lurking (acording to peter ) and reading all the terrific posts. It seems that everytime I think I might have some useful stuff to say some of the sharper members here beat me to it.
I've also been spending/wasting some time over at the Audio Asylum planar forum. AA, what a zoo! Lots of kooky ideas floating around there but entertaining none the less.
I live the life I love and I love the life I live.
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Re: M22 technical question
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Joined: Dec 2003
Posts: 3,602
connoisseur
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connoisseur
Joined: Dec 2003
Posts: 3,602 |
In reply to:
AA, what a zoo! Lots of kooky ideas floating around there but entertaining none the less.
After reading about three threads there, I started to look for ways of blocking content from their servers in my browser... kind of a " Nut Nanny."
Bren R.
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Re: M22 technical question
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Joined: Jul 2002
Posts: 958
aficionado
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aficionado
Joined: Jul 2002
Posts: 958 |
LOL!
Yes, the bulls#!t meter goes off the chart sometimes. It can be difficult to wade through to get to the sane stuff.
I live the life I love and I love the life I live.
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Re: M22 technical question
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Joined: Aug 2004
Posts: 6,379 Likes: 7
axiomite
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axiomite
Joined: Aug 2004
Posts: 6,379 Likes: 7 |
Sounds like room acoustics. I can promise that the first time you play with an SPL meter and some graph paper you will be horrified at the terrible, lumpy response you are getting from your nice accurate speakers.
M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39 M5HP, M40ti, Sierra-1 LFR1100 active, ADA1500-4 and -8
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Re: M22 technical question
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
Tom, welcome. What you describe is almost certainly due to the effect of room modes(such as the partial null at the listening position Mike mentions), as indicated by the different result at different spots. Frequency measurements at the NRC show that the M22 is flat in that area and there's no sort of individual sample defect that could have that result.
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Enjoy the music, not the equipment.
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