Przem's Phase Linear 700 Series II White Oak Conversion

P.L.F. said:
Not me ...:angel12:

Would that be the reason to hear a slight hum in any volume pot position, except going for max.?
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No, it is common knowledge that all PL amps hum according to the TX guru :-)
 
yes..."inherent in the desgn" i believe were the words... and "NOTHING CAN BE DONE ABOUT IT"
 
I guess both of the ones through here were broken. Either that, or someone had already taught them the words.
 
Gepetto said:
As long as nothing fails...

Unfortunately, hardware does fail.
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I see Joe... Then two efficient cooling fans are just waiting to reduce the hardware risks. Anything else will be cured here on Phoenix board and I have no doubbts in reliable solutions applied in the end! Such a great TEAM around... :wave:
 
My first horn speakers arrived!

Here they are - Yamaha S 4115H series I, see the pics encl. (http://www2.yamaha.co.jp/manual/pdf/pa/english/speakers/S4115HE.pdf). Perfect shape for their age. I'm the second owner after a Swiss farmer, who locked them in a storage room for more than 25 years. They sound surprisingly live and musical. Downside is the woofer power, but there are perfect and 'Yamaha approved' Eminence subs: https://www.parts-express.com/eminence-kappa-pro-15lf-2-15-cast-frame-driver--290-420 .

THEY ARE WAITING FOR LEE'S CONVERSION PROJECT although probably won't be ready to meet WOPL max power...

I'd need to clean them, check/upgrade the x-overs and replace the speakers' posts.

Any advice how to clean the aluminum HF horn throttle and those lovely white cones from small bug stains? Should I re-paint them :-)?

Thx!
 

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And got Przem's 700 back on the bench , reclaiming it from the paperwork wars it had to be sacrificed to...
 

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New BR, properly bypassed....
 

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Yamaha S 4115H from inside

As I expected, he cabinets have never been opened. I looked inside - could not resist... - and took some pictures. The x-over seems to be in a perfect shape, no need to upgrade I suppose. The two drivers are original, but there are aftermarket / new subs available at simplyspeakers.com (HF drivers) and parts-express.com (LF woofers) made by Eminence in case of WOPL amp accidental overloading. What I don't like is the damping material on the back cabinet's wall. Have to think what istead...

My 'cleaning questions' of on of previous posts still without any advice :hello1:.... ?
 

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Looks like a nice cast frame on the woof. Don't know what to say about cleaning the aluminum horn though...
 
P.L.F. said:
As I expected, he cabinets have never been opened. I looked inside - could not resist... - and took some pictures. The x-over seems to be in a perfect shape, no need to upgrade I suppose. The two drivers are original, but there are aftermarket / new subs available at simplyspeakers.com (HF drivers) and parts-express.com (LF woofers) made by Eminence in case of WOPL amp accidental overloading. What I don't like is the damping material on the back cabinet's wall. Have to think what istead...

My 'cleaning questions' of on of previous posts still without any advice :hello1:.... ?
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Hello Przem.
There are products available for cleaning Aluminum mag wheels. These are spray and rinse chemicals .
Check your auto parts stores.
the best method to bring back to like new would be to have them blasted in a sand blasting cabinet but not with sand.
Walnut shell or baking soda is the blasting media to use, or plastic bead which is a little more aggressive.
Look for someone in your area under auto restoration.
 
JustMike said:
Hello Przem.
There are products available for cleaning Aluminum mag wheels. These are spray and rinse chemicals .
Check your auto parts stores.
the best method to bring back to like new would be to have them blasted in a sand blasting cabinet but not with sand.
Walnut shell or baking soda is the blasting media to use, or plastic bead which is a little more aggressive.
Look for someone in your area under auto restoration.
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That's it - auto stuff to clean Alu wheels...! Thank you :blob8::blob8::blob8: !!!
 
Mike, we have a bead blaster at the shop, seems pretty gentle. We use those soft beads that turn to dust...
 
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