Tweeter Static
jim 249
Posts: 347
Hi All; I rebuilt my xovers here a few days ago. All has been fine up until now. The left channel speaker tweeters are starting to sound scratchy and distorted. At times they will even cut out. It is an intermittent problem. I switched the power amp inputs from the preamp and still the same thing. The top tweeter on both speakers were than switched and still the same thing. The scratchy tweeter sounds fine in the right hand speaker. I pulled the passive and checked the connectors. They are installed correctly. All the wires from the speaker connector input are tight. Could a component on the xover board be going bad? Thanks for any help!:frown:
Post edited by jim 249 on
Comments
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It's not the tweeter if you swapped them and the problem stayed with the speaker. It's either in the XO or amp/connections to the affected speaker. My guess it's in the XO. Jumper the polyswitch and retest.'65 427 Shelby Cobra
'72 Triumph TR-6
__________________
'88 Polk SDA SRS 1.2, with upgraded XO caps and Erse SDA inductors
'86 Polk SDA CRS+
'84 Polk Monitor 10A (Peerless tweeters)
'05 HSU VTF-3 Sub (Original OEM)
'20 HSU VTF-3 Sub (three more, 100% cloned)
'93 Carver TFM-35
'88 Carver M-1.0t
'88 Adcom GFT-555
'88 Adcom GFP-555
'88 Adcom GFA-555 (upgraded/restored)
'88 Adcom GFA-555 (a second one upgraded/restored)
'05 Onkyo DV-555 media
'89 Fosgate 360 Digital Space Matrix
'89 Fosgate 360 Digital Space Matrix, internal surround amp bridged to drive only a center channel
'91 Kenwood Basic M1D Amp
'89 Pioneer Laser Disc media
'89 Sony SuperBeta HiFi media
One PGA2310 based custom built remote volume control
Four Polk T-15's
Four Polk TSi-200's
Four Polk TSi-100's
Two Polk CS-10's -
The polyswitch was removed and replaced with a .5 ohm mills resistor. I am going to remove the crossover and check the solder joints and look at the connector pins for corrosion. Since all three tweeters are cutting out, there can't be many things to look for. Thanks
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Since all three tweeters are cutting out, there can't be many things to look for. Thanks
OK, I looked back at an older post and see you have 2.3's. The things common to ALL your tweeters are:
1. C3 (12uF) could be loose.
2. Connector P1 on the XO, pins 4 & 5, and the wiring to the binding posts
3. The binding posts or the external jumpers.
4. The connection to the Mills resistor you substituted for the polyswitch.'65 427 Shelby Cobra
'72 Triumph TR-6
__________________
'88 Polk SDA SRS 1.2, with upgraded XO caps and Erse SDA inductors
'86 Polk SDA CRS+
'84 Polk Monitor 10A (Peerless tweeters)
'05 HSU VTF-3 Sub (Original OEM)
'20 HSU VTF-3 Sub (three more, 100% cloned)
'93 Carver TFM-35
'88 Carver M-1.0t
'88 Adcom GFT-555
'88 Adcom GFP-555
'88 Adcom GFA-555 (upgraded/restored)
'88 Adcom GFA-555 (a second one upgraded/restored)
'05 Onkyo DV-555 media
'89 Fosgate 360 Digital Space Matrix
'89 Fosgate 360 Digital Space Matrix, internal surround amp bridged to drive only a center channel
'91 Kenwood Basic M1D Amp
'89 Pioneer Laser Disc media
'89 Sony SuperBeta HiFi media
One PGA2310 based custom built remote volume control
Four Polk T-15's
Four Polk TSi-200's
Four Polk TSi-100's
Two Polk CS-10's -
OK, I looked back at an older post and see you have 2.3's.
I have 2.3TL's. The only thing I could find that looked suspicious was that the connector pins for P1 were narrow at the split in them. They were widened out and the xover was put back in and the speakers are playing again. So far so good. I am keeping my fingers crossed. Thanks for your help.
