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Multi-Way Conventional loudspeakers with crossovers

Genesis Physics II rebuild and update...
Genesis Physics II rebuild and update...
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Old 11th November 2011, 12:27 AM   #11
MCPete is offline MCPete  United States
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Here is an informative website discussing speaker wire in general and the oxygen-free-copper type, OCf

In essence, using good quality copper wire is needed, but reducing the oxygen content of copper wire beyond what it usually is doesn't improve anything in audio applications.

-Pete
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Old 11th November 2011, 01:59 AM   #12
chops is offline chops  United States
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Quote:
Originally Posted by speaker dave View Post
Nice rebuild thread and good clear pictures. Nice to have a good pair of Genesis speakers ready for another 20 years.

Has anyone seen the cat lately?

David S.
Thanks David! Yeah, these II's will be good for quite a while now. And the kitty escaped to safety before the "woofer" came home.


Quote:
Originally Posted by MCPete View Post
Here is an informative website discussing speaker wire in general and the oxygen-free-copper type, OCf

In essence, using good quality copper wire is needed, but reducing the oxygen content of copper wire beyond what it usually is doesn't improve anything in audio applications.

-Pete
Well if you noticed, I'm just using my own DIY "White Lightening" speaker wire from the amp to the speakers. To me, wire is wire. As long as it's big enough, it'll work just fine. I don't get into all of that marketing stuff.

As for the whole "OFC" thing, I just figured it meant that it wouldn't oxidize so easily or quickly.
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Old 11th November 2011, 11:58 AM   #13
DrDyna is offline DrDyna  United States
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Quote:
Originally Posted by chops View Post

As for the whole "OFC" thing, I just figured it meant that it wouldn't oxidize so easily or quickly.
This sounds right. Oxygen free and wire size is pretty much the only selection criteria I've ever used.

I do have some old apature 10 gauge wire that I was offered at a 90% discount from a buddy that runs a stereo shop because an error was made in manufacturing and it was terribly oxidized. I've had speakers connected with it though and even though it's as green as the statue of liberty, it still seems to function just fine.
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Old 12th November 2011, 01:37 AM   #14
chops is offline chops  United States
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Originally Posted by DrDyna View Post
This sounds right. Oxygen free and wire size is pretty much the only selection criteria I've ever used.

I do have some old apature 10 gauge wire that I was offered at a 90% discount from a buddy that runs a stereo shop because an error was made in manufacturing and it was terribly oxidized. I've had speakers connected with it though and even though it's as green as the statue of liberty, it still seems to function just fine.
Yeah, for the longest time I used some old original 12awg Monster Cable that my oldest brother had from the early 80's. That stuff was totally green from one end to the other. I just used a knife and scraped off the green on either end and used it for a long time. Later on, I got a job and bought brand spankin' new "original" 12awg Monster Cable... Absolutely no difference in sound.

However, I always enjoyed the smell of new speaker cable and how it filled the room of that fresh rubber smell.
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Old 2nd January 2014, 10:21 AM   #15
DARIODEVE is offline DARIODEVE
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Default update info

Hi Charles
very nice job! I have the same speakers from the 80' and I want to make the same update (I need to refoam them for the 2nd time), could you please tell me if you have done further adjustments or improvements? where is possible to buy online the crossover/plate parts?
any other suggestions?
thanks
best regards
Dario
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Old 8th March 2015, 03:53 PM   #16
moggi1964 is offline moggi1964  England
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Chops, sent you a PM with reference to this design change. Thanks.
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Old 18th January 2018, 07:14 PM   #17
chops is offline chops  United States
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Still running these speakers, but with a whole new lineup of gear. Also finally got around to treating the enclosures with Howard's Feed & Wax last week. Also replaced all of the stock screws with solid brass screws. Just for looks.

And man, do these things sound excellent! More to come...

Click the image to open in full size.
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Old 18th January 2018, 07:52 PM   #18
chrisb is offline chrisb
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Isn't that Howard's product the greatest? If the finish needs more than just some rehydration, they also make the wonderful Restor-a-Finish series in range of colours.
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Old 19th January 2018, 03:24 AM   #19
chops is offline chops  United States
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Isn't that Howard's product the greatest? If the finish needs more than just some rehydration, they also make the wonderful Restor-a-Finish series in range of colours.
It is. The enclosures are actually in pretty great shape. I was thinking of using some #0000 steel wool and Restor-A-Finish, and possibly finishing off with some low gloss Tung oil. But I think that might be a bit much that these speakers really don't need.

As it is, throughout this past week, the wood has seemed to take on a slightly darker shade just from applying those two coats of Feed & Wax.

I may hit them another time or two with the Feed & Wax in the next couple of weeks or so, just for the heck of it, since it looks like they had never been treated since new in 1979.

Here's a quick before and after shot. They've seemed to darken up a touch since.

Click the image to open in full size.

Click the image to open in full size.
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Old 19th January 2018, 05:40 PM   #20
chrisb is offline chrisb
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Yeah, the book-matched veneers will certainly come back to life with a new finish. Substantially big figuring on this pair.
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