jwilson55 Posted September 18, 2010 Share Posted September 18, 2010 I've seen a few post suggesting the woofer be rotated 180 degrees. What exactly does this accomplish? Quote Link to comment Share on other sites More sharing options...
runninshine Posted September 18, 2010 Share Posted September 18, 2010 I bought a pair of HIs and the guy I bought them from said he rotated the woofer every 5 years or so....said it had something to do with gravity, and some [bs]....I had no idea what he meant. Quote Link to comment Share on other sites More sharing options...
jwilson55 Posted September 18, 2010 Author Share Posted September 18, 2010 So, I suppose the same would hold true for Cornwalls? Quote Link to comment Share on other sites More sharing options...
Dennie Posted September 18, 2010 Share Posted September 18, 2010 I just rotate my listening room, same thing, but the skill level is much greater! [] [bs] Dennie Quote Link to comment Share on other sites More sharing options...
runninshine Posted September 18, 2010 Share Posted September 18, 2010 I just rotate my listening room, same thing, but the skill level is much greater! Dennie It's hard to hold down La Scalas when they are on the ceiling. Quote Link to comment Share on other sites More sharing options...
Dennie Posted September 18, 2010 Share Posted September 18, 2010 I just rotate my listening room, same thing, but the skill level is much greater! Dennie It's hard to hold down La Scalas when they are on the ceiling. But worth it with the woofer rotated 180 degrees! [] Dennie[] Quote Link to comment Share on other sites More sharing options...
MechMan Posted September 18, 2010 Share Posted September 18, 2010 I would assume it has something to do with sagging of the surround and changing the gap in the voice coil. It can only help...cant hurt. Quote Link to comment Share on other sites More sharing options...
Rivernuggets Posted September 18, 2010 Share Posted September 18, 2010 I noticed upon getting my used Forte IIs, the passives have a slight sag. Gravity can be cruel. Didn't think about a possible voice coil issue with drooping active woofers. Good one. Are the paper 'accordian' style woofs more prone to sag than rubber surrounds? Quote Link to comment Share on other sites More sharing options...
jwilson55 Posted September 19, 2010 Author Share Posted September 19, 2010 Thanks for the info guys. I wish I had investigated this prior to upgrading the caps on 82 Cornwalls about a year ago. Oh well, wth. This will be a quick fix on these and now I know for the cap upgrade on my Herseys. Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 20, 2010 Share Posted September 20, 2010 Actually, gravity over time will cause woofer cones and the "cage" (due to the big fat magnet on the back...) to sag, ever so slightly. Not much, mind you, but what really happens is that there is vertical stress on everything that's "hanging". By turning the woofer 180 degrees, you will get gravity to wrok for you and it will then start the slow almost imperceptable "sag" back in the opposite direction. Woofer voice coils and cone surround material like perfect alignment and evenly distributed "stress". Quote Link to comment Share on other sites More sharing options...
djk Posted September 20, 2010 Share Posted September 20, 2010 That reminds me, it's time to go and rotate my father's EV 6 woofers (18" with the 1/2" thick foam cones). They need it every 2~3 years. Quote Link to comment Share on other sites More sharing options...
RichardP Posted September 21, 2010 Share Posted September 21, 2010 H E R E S Y Quote Link to comment Share on other sites More sharing options...
MechMan Posted September 21, 2010 Share Posted September 21, 2010 H E R E S Y WOW...never even noticed the error, Goes to show the power of the brai. Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 25, 2010 Share Posted September 25, 2010 I arrested a "dude" once who's first name was..... "Brain". Driver's license, birth certificate, etc. Seems like Mummy and Daddy had some spelling challenges at the hospital with...... "Brian"...... [H] Quote Link to comment Share on other sites More sharing options...
fini Posted September 25, 2010 Share Posted September 25, 2010 I rotated my woofers 180 degrees, but it really muffled the sound. I had a hard time fitting the grills back on, too. Quote Link to comment Share on other sites More sharing options...
jwilson55 Posted September 25, 2010 Author Share Posted September 25, 2010 That's too funny! I made a 5.5 hour road trip and now I have a pair of Heresy speakers. Hope I can get my grills back on after I rotate the woofers, lol! [] Quote Link to comment Share on other sites More sharing options...
jwilson55 Posted September 25, 2010 Author Share Posted September 25, 2010 and the backs. Quote Link to comment Share on other sites More sharing options...
fini Posted September 25, 2010 Share Posted September 25, 2010 That's a pretty weird back you've got there, jwilson! On your Heresys, that is. Any idea what's going on with the 2-tones? Usually, the backs from that era are simply painted black. Quote Link to comment Share on other sites More sharing options...
jwilson55 Posted September 25, 2010 Author Share Posted September 25, 2010 I have never seen backs like this. Here is what Grooms said about them: They are from a piece of 1/2" birch plywood where the top layer piece on the right side is "normal" birch and the left side is (I'm pretty sure...) birch "sapwood" which is much darker and normally not used in standard "furniture" grade plywood. Quote Link to comment Share on other sites More sharing options...
fini Posted September 25, 2010 Share Posted September 25, 2010 What is the speaker "type" (found on the paper label)? Quote Link to comment Share on other sites More sharing options...
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