Celestion G12T-75 Speaker Rattle problem

theman1001 · 07-01-2009, 03:53 PM

Hi,
There is a distinct rattle from one of the Celetion G12T-75 speakers in my jcm900 2x12 combo. I have taken the speakers out of the enclosure to ensure it wasnt something in the cabinet rattling. I am certain the rattle is coming from just one of the speakers. It only occurs at certain frequencies. I have measured its DC resistance and it seems normal for a 16 ohm speaker. I can't see any cuts or holes in the speaker cone. It sounds very much like a rattlesnake!

What the hell could the problem be? It seems more pronounced when playing clean, but I assume that is because it doesnt blend in with any distortion.

Any help is greatly appreciated!

HOT TUBES 70 · 07-02-2009, 12:22 PM

if you push on the cone ,do you feel any rough spots ?

MartyStrat54 · 07-02-2009, 07:13 PM

Check the dust caps on the speakers and make sure that they are not partially loose. This will make all sorts of weird noises. Also, make sure the speaker leads aren't rubbing against the spider or the cone, as this will make noises as well.

Marty

07-01-2009, 03:53 PM	#1 (permalink)
theman1001 Junior Member Join Date: Feb 2009 Posts: 18	Celestion G12T-75 Speaker Rattle problem Hi, There is a distinct rattle from one of the Celetion G12T-75 speakers in my jcm900 2x12 combo. I have taken the speakers out of the enclosure to ensure it wasnt something in the cabinet rattling. I am certain the rattle is coming from just one of the speakers. It only occurs at certain frequencies. I have measured its DC resistance and it seems normal for a 16 ohm speaker. I can't see any cuts or holes in the speaker cone. It sounds very much like a rattlesnake! What the hell could the problem be? It seems more pronounced when playing clean, but I assume that is because it doesnt blend in with any distortion. Any help is greatly appreciated!

07-02-2009, 12:22 PM	#2 (permalink)
HOT TUBES 70 Senior Member Join Date: Oct 2008 Location: SASKATOON Posts: 1,675	Re: Celestion G12T-75 Speaker Rattle problem if you push on the cone ,do you feel any rough spots ? __________________ MARSHALL 6100LM MARSHALL 1960A W/-G12H 30's CUSTOM BUILT 2X12 W/-V30's "MARSHALL" - only the best will do !

07-02-2009, 07:13 PM	#3 (permalink)
MartyStrat54 Senior Member Join Date: Feb 2009 Location: Formerly Phoenix, now north of KC Posts: 2,583	Re: Celestion G12T-75 Speaker Rattle problem Check the dust caps on the speakers and make sure that they are not partially loose. This will make all sorts of weird noises. Also, make sure the speaker leads aren't rubbing against the spider or the cone, as this will make noises as well. Marty __________________ MARTY 2009 Gibson Explorer-Hell Raising Machine 1989 Fender Strat Plus USA 2008 Fender Tele USA 2004 Schecter Elite w/DiMarzio's TSL100 with custom 4x12 cab. TSL122 with Man 'O War Speakers. TSL602 #1 with JBL D123 Speakers and 602 #2 with Altec 417 Speakers. "Oh so sweet my friends." DSL401 #1 with Red Fang Speaker and 401 #2 with JBL D123 Speaker. Tubes: Let's just say they are NOS that kick ass.

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