WOPL running 4 Ohm speakers

Your amp may be seeing 2-3 ohms with those speakers in parallel regardless of whether you think they are 8 ohms each
 
Why would you THINK you need to add another set of 901's in parallel???? Was the single set not loud enough??? Holy cow...... You can run 2 amps off your pre and run the other set off the second amp
 
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Impedance varies by frequency. Joe is best to explain this.

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Besides that, The operators manual tells you how to hook up multiple speakers and that AINT the way.
 
WOPL Sniffer said:
Besides that, The operators manual tells you how to hook up multiple speakers and that AINT the way.
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His issue I think Perry is he had run it that way for 50 years before WOPL without problem. WOPL, problem. Is that right plex?
 
If he follows the book, all will work fine. Don't follow the book, it will blow the hell up sooner or later.
 
WOPL Sniffer said:
No way it ran like that for 50 years.
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Picture of me 50 years ago with grandma hope you can see what's in the backround. I have better pics just got to find them.
 

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Maybe you think you ran them in parallel 50 years ago, maybe you wired them like the book says 50 years ago.
 
WOPL Sniffer said:
Maybe you think you ran them in parallel 50 years ago, maybe you wired them like the book says 50 years ago.
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Dude anything not to believe me? I just changed the speaker wire not too long ago-I could take a picture of that too. Same old oxidated speaker wire we had from the 80s, soldered in parallel-we replaced it.
 
plex said:
Dude anything not to believe me? I just changed the speaker wire not too long ago-I could take a picture of that too. Same old oxidated speaker wire we had from the 80s, soldered in parallel-we replaced it.
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Well, don't know what to tell ya. The book says no way.................... and, it works with one set like the book says.
 
Just so you know, attach your ohm meter to the parallel speakers. Its probably in the 3 ohm range and that can go lower at certain freq's.
 
WOPL Sniffer said:
Just so you know, attach your ohm meter to the parallel speakers. Its probably in the 3 ohm range and that can go lower at certain freq's.
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I will have to measure it. Still does not explain the decades of distortion free operation.
 
So evidence suggest something awry in the WOPL process. I'd send that amp to someone here who is well versed in the WOPL.
 
plex said:
I understand about the cooling 4 fin vs 8 fin. But clipping is happening right away.
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i too used an old 4 fin junker...i build an extra set of fins to boost cooling ....
i replaced the original rectifier to a bigger one that joe recommended....
i used white oaks power supply cap upgrade....
my transformer/rectifier setup gives be a full +-82v....more than enough to drive to full power...
i did use the white oak chassis because my junker did not have top and bottom plates and i wanted the improved power socket and extras included with the heavier chassis....
sniff recommends these aircom cooling fans for heavy use...
https://www.ebay.com/itm/3325218315...aeJ5BixoJKUEDXeononl/KBPpTkk|tkp:BFBM2ITV5dpg
i have not done so yet....as i will build a new enclosure for my systems...and incorporate a cooling system when the time comes...
but, i dont push mine over 110 db....a little better than half way using schiit modi3 dacs with schiit magni 3+ and heresy preamps...
thats plenty loud enough for me...
 

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