lwhaples Posted September 6, 2006 Share Posted September 6, 2006 I recently changed from one TT to an other,and this is when it started.This weekend while spinning LP's at weekend volume I ketp hearing a back ground boom,boom. I even went outside to see if someone was displaying fireworks. Next night different music and still a back ground ,boom boom. Looking at the wall thinking my wife is moving things around in the house.Well, then I saw the K33 doing a in and out motion all of the sudden for no reason. So, I find the boom,boom but why? The TT is a Thorens TD 160 MK III with a SME tonearm and the Denon DL 103 cartridge.I had it hooked up before and never heard the extra noise. I swapped amps around to make sure it wasn't the amp.When using the tuner, it's fine. So , I'm guessing it's the TT some how.I also switched the jacks on the preamp. The extra boom, boom is only picked up from a song with some real bass to it. Not sure where to go from here? Thanks for any HELP! Larry Quote Link to comment Share on other sites More sharing options...
djk Posted September 6, 2006 Share Posted September 6, 2006 Buy a subsonic filter. http://www.kabusa.com/rf1.htm Quote Link to comment Share on other sites More sharing options...
jacksonbart Posted September 6, 2006 Share Posted September 6, 2006 weird is right Quote Link to comment Share on other sites More sharing options...
Duke Spinner Posted September 6, 2006 Share Posted September 6, 2006 howsabout a cerwin vega DB-10 ...........[] Quote Link to comment Share on other sites More sharing options...
lwhaples Posted September 7, 2006 Author Share Posted September 7, 2006 howsabout a cerwin vega DB-10 ...........[] Sure? But what is it? Larry Quote Link to comment Share on other sites More sharing options...
lwhaples Posted September 7, 2006 Author Share Posted September 7, 2006 Ok, maybe I should add. It wasn't till after I was playing Lp's for awhile before I noticed the extra noise. It comes out of only one speaker.And even at low levels,it's like someone tapping on the cone every so often. Tonight,I guess I'll open up the back and look. Loose wire? Thanks Larry Quote Link to comment Share on other sites More sharing options...
oldbuckster Posted September 7, 2006 Share Posted September 7, 2006 Are you sure it isn't feedback from that table..........move it away from speakers, doesn't hurt to try, it's free..........hard to believe it the speakers fault....... Quote Link to comment Share on other sites More sharing options...
Bennyboy Posted September 7, 2006 Share Posted September 7, 2006 Larry , Just what buckster said ........definitely feedback.. It is only one speaker ? Set the right and left output from the turntable over ? See if it moves over to the other speaker.... Ben Quote Link to comment Share on other sites More sharing options...
lwhaples Posted September 7, 2006 Author Share Posted September 7, 2006 Are you sure it isn't feedback from that table..........move it away from speakers, doesn't hurt to try, it's free..........hard to believe it the speakers fault....... Thanks,It is the closer of the two speakers that's causing stress.To move things around is going to take some thought.My system is in my shop,with not much extra space to play with. Larry Quote Link to comment Share on other sites More sharing options...
lwhaples Posted September 7, 2006 Author Share Posted September 7, 2006 Larry , Just what buckster said ........definitely feedback.. It is only one speaker ? Set the right and left output from the turntable over ? See if it moves over to the other speaker.... Ben Ben, Thanks. I did try switching the jacks,and the same speaker acts up. I'll try to get things moved around and see what happens. Larry Quote Link to comment Share on other sites More sharing options...
Bennyboy Posted September 7, 2006 Share Posted September 7, 2006 Hey Larry , If your turntable stays very close to the speaker then the magnet force of the basspeaker can mess up the tracking of your tonearm.....the needle jumps out of the groove...and boom....boom.. Ben Quote Link to comment Share on other sites More sharing options...
Allan Songer Posted September 7, 2006 Share Posted September 7, 2006 Subsonic garbage causing the woofer to pump uncontrollably. I've seen this a few times. Many things can cause this. Warped record! --this is obviously not your problem How well is your turntable isolated? That's the first thing I'd check. I have also seen/heard this when an arm and cartridge are TOTALLY incompatable. Some sort of feedback. GOOD LUCK! Quote Link to comment Share on other sites More sharing options...
NOSValves Posted September 7, 2006 Share Posted September 7, 2006 Well the obvious question is does this only happen when playing LP's? If so then it almost has to be turn table related. Craig Quote Link to comment Share on other sites More sharing options...
CaptnBob Posted September 7, 2006 Share Posted September 7, 2006 Not sure what electronics you're using, but I had an oscillation on one channel when my preamp, an older tube unit, didn't "get along" with a high output moving coil cartridge. That said, I'd look at the acoustic feedback first. Quote Link to comment Share on other sites More sharing options...
lwhaples Posted September 7, 2006 Author Share Posted September 7, 2006 Subsonic garbage causing the woofer to pump uncontrollably. I've seen this a few times. Many things can cause this. Warped record! --this is obviously not your problem How well is your turntable isolated? That's the first thing I'd check. I have also seen/heard this when an arm and cartridge are TOTALLY incompatable. Some sort of feedback. GOOD LUCK! Thanks Allan, The TT sets on a firmly mounted bench with a concrete floor. I never felt that placement was an issue.With my other TT being the same model,it has a Rega RB250 arm and a Orfoton cartridge. Though I did dampen the chassis.With it I never had a problem at any volume. Funny thing is, I had this same TT with the SME and Denon playing fine awhile back,but decided it wasn't set up right. Didn't have the time to play,so I returned the other back into the system. Larry Quote Link to comment Share on other sites More sharing options...
lwhaples Posted September 7, 2006 Author Share Posted September 7, 2006 Well the obvious question is does this only happen when playing LP's? If so then it almost has to be turn table related. Craig Yes, I beleive it's the TT. Thanks again on the MKIII. Larry Quote Link to comment Share on other sites More sharing options...
lwhaples Posted September 8, 2006 Author Share Posted September 8, 2006 Last night I hooked up a differnt Cornwall that sits in a different spot. Didn't hear any extra noise. I also remembered that the first TT has iso spikes,so I'll try changing the bases this weekend to see if the closer speaker is cool with that. Thanks for all the replys. Larry Quote Link to comment Share on other sites More sharing options...
lwhaples Posted September 10, 2006 Author Share Posted September 10, 2006 The iso spikes did the trick. Looks like I need another set.Thanks again for the help.[] Larry Quote Link to comment Share on other sites More sharing options...
oldbuckster Posted September 10, 2006 Share Posted September 10, 2006 Wish they were all that simple!!!..................Fall settling in up there yet? Cool nights already.................Come On Indian Summer...........Fall in the North East, doesn't get much better.......... Quote Link to comment Share on other sites More sharing options...
lwhaples Posted September 10, 2006 Author Share Posted September 10, 2006 Wish they were all that simple!!!..................Fall settling in up there yet? Cool nights already.................Come On Indian Summer...........Fall in the North East, doesn't get much better.......... Yes,leafs are turning and cool at night. Had the wood stove going abit last night. Helps,that I just insulated my shop with Corebond spray foam.Should be a warmer winter! Larry Quote Link to comment Share on other sites More sharing options...
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