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Old 23rd December 2010, 02:09 PM   #1361
gribox is offline gribox  Philippines
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just wanna share my amp photos...need ur comments...
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Old 23rd December 2010, 10:03 PM   #1362
TonyTecson is offline TonyTecson  Philippines
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Quote:
Originally Posted by asia View Post
sir tony
i will quote this
the secret, if you can call it as such is in the power supply....i used 47,000ufd electrolytics, a 35 ampere rectifier bridge and very heavy power transformers whose secondaries are wound bifilliar to exactly locate the center tap, about twice as heavy as other commercial power traffos...
how to do it
the bifiliar?

bifilliar winding is done by winding 2 strands of copper wire at the same time, since they are wound side by side, they will have exactly the same turns and therefore the center tap is exactly located...
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Old 23rd December 2010, 10:05 PM   #1363
TonyTecson is offline TonyTecson  Philippines
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Quote:
Originally Posted by asia View Post
390pf
180pf
47pf
all mica,
a special notation not to use ceramic
,
so where to find?
mouser, digi-key, allied, farnell, rs-components are just a few....
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Old 23rd December 2010, 10:06 PM   #1364
TonyTecson is offline TonyTecson  Philippines
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Quote:
Originally Posted by asia View Post
a rough scanning of doubled barrel diagram,
where to find original st(2n3439)(2n5415)
makes me think its hard to find(wala sa list ng alexan)
and where to find mica caps
mje340/350 are the replacements.......
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Old 23rd December 2010, 10:11 PM   #1365
TonyTecson is offline TonyTecson  Philippines
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Quote:
Originally Posted by gribox View Post
just wanna share my amp photos...need ur comments...
awesome!
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Old 28th December 2010, 06:01 AM   #1366
TonyTecson is offline TonyTecson  Philippines
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Dec. 27, 2010 i was invited to be one of 4 judges in their anual STEREO shoot-out. Malabon has been known to hosts such affairs on a yearly basis, this year

i have lot's of time after a *6 year stint in Sahkalin, Russia.....

my wife's cousin Boy is also an enthusiast and was helping one of the participants, this is his set-up:
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off to the venue, a basketball court in Dampalit, this competetion is called "Juniors", the speakers being, one 15 or 18 inch woofer and various combinations

for mids and highs.

the 1,2,3 finishers all used Ruel Felix's SP3 tube preamp clones, media used were all CD's and each participant played the same program materilal from the

cd's one after the other....judging then becomes pretty straighforward.....kudos to the organizers, mr toti gregorio and company....i had a grand time

specially with the finale performance, "Hotel California"...

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Old 28th December 2010, 06:09 AM   #1367
t68kv is offline t68kv  Philippines
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Bangis! hehe
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Old 28th December 2010, 06:49 AM   #1368
rolandong is offline rolandong  Philippines
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Hi Sir,

Why didn't you told me i could have auditioned my quad channel super leach and TH115 clones

What was the criteria and how was measurement done? and the price?

regards,
Roland
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Old 28th December 2010, 08:49 AM   #1369
engel dela pena is offline engel dela pena  Philippines
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sir tony,
all amps welcome?
malabon is known for high power tube amps
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Old 28th December 2010, 09:04 AM   #1370
TonyTecson is offline TonyTecson  Philippines
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@rolandong,

there were 7 participants this year in the "junior category", one 15 or 18 inch woofer, then for mid highs there is no limit....the amps also have no limit, there were crown amps, Konzert amps, there were even pioneer recievers.....almost all used bi-amping, many has tube preamps, the AR sp3 tubed clones....

@engel,

i saw only one tube amp used, a pp KT88 used to power the mids and highs, but is was rather disappointed in its performance,

all amps are welcome......
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