Last night I was listening to the CD Baroque Music for brass and organ with a nice glass of Rex-Goliath red wine. I would say fairly loud on the volume control. I heard coming from the left channel, an intermittent tinny buzzing noise at various times on various tracks. Before I start "taking things apart" I am looking for opinions about this and others past experience with this challenge.
Thank you,
Steve G
"It only costs 80% extra to go first class"
You sure it was not a reed from the organ? Can you hear it in headphones??
Rob
By your description, it sounds like a crack in a compression driver diaphragm compliance/surround.
Edgewound...JBL Pro Authorized...since 1988
Upland Loudspeaker Service, Upland, CA
Do not believe it's the organ reed. Good point on the headphones, however I do not own a pair of these.Originally Posted by Robh3606
You sure it was not a reed from the organ? Can you hear it in headphones??
Rob
"It only costs 80% extra to go first class"
Slot tweeter or horn?
"It only costs 80% extra to go first class"
Mid horn.
Edgewound...JBL Pro Authorized...since 1988
Upland Loudspeaker Service, Upland, CA
Thank you, PM your way...
"It only costs 80% extra to go first class"
Turns out the tinny buzz happens when the horns play. Trumpet, trombone etc.
"It only costs 80% extra to go first class"
Can you swap speaker connections to see if it occurs in the RH speaker on the same track?
This still could be frequency dependent, and like edge sez a fried CD.
Swap connections and see if it occurs in the other speaker.
A fried compact disc? Hey wait a minute.
Widget
Fried CDD
Mike Scott in SJ, CA
Drive 'em to the Xmax!
I doubt it's a fried CD since the CD is new. I here the tin buzz on more than one track. This particular CD was recorded in mono, so not sure if swapping channels will make a difference, but will check it out. THX
"It only costs 80% extra to go first class"
Between you and me; I think they meant Compression Driver (CD). Hey, I thought the same thing first time I read it!
Perhaps the diaphragm isn't completely centered? I had a similar sounding problem
w/ a 2445 that was frequency and level dependent ... re-centering the voice coil in
the gap with a bit more care and checking took care of it. Absolutely was not apparent
except under very specific (and repeatable) circumstances. ... I did not have a way to
do a swept tone test at the time.
A tolerance problem (swap for different diaphragm?) or slight out-of-round or tllt
condition -might- also cause something that could sound like this.
-grumpy
Dammit, Widget!!A fried compact disc? Hey wait a minute.
Uh, sorry.
I was indeed referring to the Compression Driver, as I said, as posted by edge.
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