From organtec@charter.net Sat Dec 15 05:22:55 2012
Subject:RE: QSC K-series -- an interesting observation

That's all basic info that that every decent Altec installer knew.



From: CloneWheel@yahoogroups.com [mailto:CloneWheel@yahoogroups.com] On
Behalf Of Bruce Wahler
Sent: Friday, December 14, 2012 8:20 PM
To: CloneWheel Support Group
Subject: [CWSG] QSC K-series -- an interesting observation





Hi All,

I was looking at the owner's manual for the QSC K-series, and I came
across something interesting. I've often heard list members voice a
preference for the K10 over the K12, and a few owners who said, "I
actually like the K8 best of all." I always thought that this was due
to better transient response ('tighter' bass) or something, but I
noticed that the three speakers have widely different dispersion patterns:

- K8 -- 105 degrees, probably meant as full-range fills for background
music
- K10 -- 90 degrees, for use in pairs with a subwoofer for small to
medium rooms
- K12 -- 75 degrees, probably to make it easier to use them in arrays
for big venues.

(Bear in mind that the K-series wasn't designed as a keyboard amp; they
just sound good when used as one.)

In plain terms, the dispersion pattern is a measure of how much of a
full circle a given speaker will provide sound over it's *full* audio
range; move outside that range and the treble starts to roll off. Since
the K8 has a much wider 'sweet spot' then the K10 or K12, it's not as
critical where the speaker is placed around the player. Also, a wider
dispersion will improve the stereo image in many situations. In fact, a
K12 might not even sound as good in close quarters, because narrow-beam
PA speakers are also usually designed to be 'long-throw' -- i.e., to
work best at some distance from the listener.

--
Regards,

-BW

Bruce Wahler
Ashby Solutions.com^(TM)
bw@ashbysolutions.com
http://music.ashbysolutions.com
877.55.ASHBY (877.552.7429)

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