bassetized Posted August 25, 2003 Share Posted August 25, 2003 i just got off the phone with Klipsch tech support, i wanted to see if they could help me with a problem with magnetic interference from using a '75 Heresy as a center channel. according to what i've read, i shouldn't be having a problem with the tweeter and midrange because they are alnico. the rep said that he thought that it was the tweeter causing the problem. when i pointed that the tweeter shouldn't be the problem, he said that it wasn't just the speaker but also the TV. i suppose so, but i never heard that before. i asked about bucking magnets for the woofer, he said that he didn't think that they made bucking magnets for that woofer. has anybody fixed this problem before? btw i have a 32" JVC, if that really matters... Quote Link to comment Share on other sites More sharing options...
dougdrake Posted August 25, 2003 Share Posted August 25, 2003 (If you think YOUR post was long, spend some time on the 2-channel forum!!) You can buy bucking magnets from www.partsexpress.com. I don't know if they have the right size for your application, but that could be a source for you if Klipsch does not have any. DD Quote Link to comment Share on other sites More sharing options...
bassetized Posted August 27, 2003 Author Share Posted August 27, 2003 Klipsch has the bucking magnets for both the midrange and woofer...does that mean that the midrange might be causing the problem? i get that it's probably the woofer, but why make one for the midrange if it's not supposed to be a problem? should i put the bucking magnets on both Heresys even though i'm only using one for the center? (iguess what i'm asking is putting the bucking magnets on change the sound enough to warrent putting them on both speakers?) i know these are pretty lame questions, but we're having a slow day at work and... thanks Quote Link to comment Share on other sites More sharing options...
avman Posted August 27, 2003 Share Posted August 27, 2003 get the bucking magnets(woof and mid) for the center channel only,hurry up,install them,and get back to enjoying the sound of your speakers w/out worrying about damaging your tv. avman. Quote Link to comment Share on other sites More sharing options...
milton10 Posted August 27, 2003 Share Posted August 27, 2003 Does anyone know how much the bucking magnets are from Klipsch? I am thinking of using a Heresy as a front speaker. Thanks! Milton Quote Link to comment Share on other sites More sharing options...
Aggie Klipsch Posted August 27, 2003 Share Posted August 27, 2003 You can build a faraday shield inside of the cabinet. Get some copper mesh and attach it on all of the inside surfaces of the cabinet. This should eliminate the flux generated by the magnets. Quote Link to comment Share on other sites More sharing options...
bassetized Posted August 27, 2003 Author Share Posted August 27, 2003 Bucking magnet prices from Klipsch woofer part # 158002M - $21.85 mid part # 158001M - $10.39 Quote Link to comment Share on other sites More sharing options...
bassetized Posted August 28, 2003 Author Share Posted August 28, 2003 i tried to get a single early model Heresy ('75) but the seller, who priced the speakers individually, wouldn't split the pair. can't really blame them. does anybody have a single early model Heresy to sell? might just go with the custom built center if i can't score a single. don't know if i can afford another pair so soon. Quote Link to comment Share on other sites More sharing options...
Frzninvt Posted August 28, 2003 Share Posted August 28, 2003 There is a single Heresy from around that vintage for sale on AudioClassics website. Their prices are high! Perhaps some haggling could be done, I know that they payed alot less to purchase it then what they are asking for it. It looks like it is the Walnut finish with the pie slice logo in the upper left corner. They have a single Belle also priced at what you would expect to pay for a pair, what thieves! Quote Link to comment Share on other sites More sharing options...
bassetized Posted August 28, 2003 Author Share Posted August 28, 2003 that's the guys i tried to buy from...they have a pair of those serial #'s 18N046, 18N045 (1973) for $299 each-598 a pair. wouldn't split them. they do have a single Heresy II. Quote Link to comment Share on other sites More sharing options...
milton10 Posted August 28, 2003 Share Posted August 28, 2003 bassetized, I was thinking of watching ebay for a pair of cosmetically beat up (but functionally fine) Heresy's, and then splitting the pair with someone who wants one for a center speaker. I recently bought a circa '78 pair of Heresy's that looked real bad, had a blown tweeter, and fixed them up - now they look and sound brand new. I paid about $250 for the pair! If I can work out a partnership with someone who is willing to split a pair, we can get a nice single center for less than $200 including shipping. That amount is equal to or less than a comparable "non-Heritage" center speaker! Just an idea! Milton Quote Link to comment Share on other sites More sharing options...
bassetized Posted August 28, 2003 Author Share Posted August 28, 2003 Milton, please email me at bassetized@bellsouth.net thanks Quote Link to comment Share on other sites More sharing options...
bassetized Posted August 28, 2003 Author Share Posted August 28, 2003 i hope i'm not breaking some kind of copywrite law, but i'm posting the reponse i got back today from Klipsch Tech Support about shielding for Heresy's (specifically older models)---- "You should not have a problem with the K-55-V mid or the Alnico magnet on the tweeter as they do not have that much stray magnetism, if any. I just verified this with the K-55-V and alnico K-77 I have here and they are fine to within 2 1/2 inches of my flat screen PC monitor. Closer than that and they start to effect the screen. I would suggest most, if not all, of the problem is from the woofer. One thing to try, if you have a cookie sheet that will fit inside the speaker, lay it on what is now the bottom. This may be enough to offset any or most of what the tweeter may be causing. What sometimes may be used is 1/16 to 1/8 cold rolled metal plate." the cookie sheet idea is way cool and might work for newer model Heresy's. Quote Link to comment Share on other sites More sharing options...
JohnA Posted August 28, 2003 Share Posted August 28, 2003 First off, a '75 Heresy has an AlNiCo midrange and tweeter that are self-shielded. They don't need shielding or bucking magnets and you can't use them either. The woofer should be a K-22-E with an unshielded ceramic magnet. It is the source of your problems. Try turning the speaker upside down (tweeter closest to the TV). If that doesn't work, you have 2 options: buy an old AlNiCo woofer from a 60s Heresy (seen on ebay) or bucking magnets. Bucking magnets are probably the cheaper option. I'm guessing the Klipsch tech is young and not versed in the older speakers. The things he described make it sound like he was confusing your Heresy with an HII. Klipsch Audio Technologies is in the unusual position of having properly operating products in the wild that are older than any of the employees. Quote Link to comment Share on other sites More sharing options...
KhornKerry Posted August 28, 2003 Share Posted August 28, 2003 I shielded my Cornwall speakers using thin sheets of steel and cardboard. The basket on the woofer was the biggest problem. See my post in the Home Theater "Magnet shield for Cornwall speaker" dated 5-14-2003. Same idea should work on the Heresy. The cost is low but it will take some work to cut and bend the steel sheet metal. Quote Link to comment Share on other sites More sharing options...
milton10 Posted August 28, 2003 Share Posted August 28, 2003 Hi! I am at work right now, so no access to email (just the web). I will email you when I get home tonight from work (about 11:30pm EST). Thanks! Milton Quote Link to comment Share on other sites More sharing options...
Myhamish Posted August 28, 2003 Share Posted August 28, 2003 try a couple of cookie sheets or likewise under the Heresy. I've got a similar setup with the D series JVC 32" Quote Link to comment Share on other sites More sharing options...
milton10 Posted August 28, 2003 Share Posted August 28, 2003 If my TV is on top of the Heresy, would I have to put the cookie sheet on the top section (of the interior) of the speaker? Thanks, Milton Quote Link to comment Share on other sites More sharing options...
bassetized Posted August 28, 2003 Author Share Posted August 28, 2003 if your speaker is upside down(tweeter down) then the pan goes on the bottom(which used to be the top). confused yet? however you position the speaker, put the cookie sheet between the tweeter and the set. Quote Link to comment Share on other sites More sharing options...
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