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Old 12th December 2010, 08:33 AM   #1341
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Quote:
Originally Posted by dj_jojo_md View Post
I am not recommending that you use this...it may damage your drivers.

but...here you go anyway...enjoy!

jojo
sir jojo,

what are the "other" options for this phase checker that will not damage our speakers. I already saw one phase checker gadget. It has two part parts, a sound generator (not sure of the term) and the one that is brought near the speaker and gives color signs like green or red. is this similar to the diagram you have posted here?
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Old 13th December 2010, 08:12 PM   #1342
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Quote:
Originally Posted by zrolsky View Post
sir jojo,

what are the "other" options for this phase checker that will not damage our speakers.

Smaart...using the Phase and Magnitude Monitor.

I already saw one phase checker gadget. It has two part parts, a sound generator (not sure of the term) and the one that is brought near the speaker and gives color signs like green or red. is this similar to the diagram you have posted here?
I think they are the same...

Magandang araw,
jojo
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Old 18th December 2010, 12:18 PM   #1343
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@ dj_jojo_md

sir i need your recommendation on what driver should i use for Mt 122 cabinet that can be bought in raon, something that is not too expensive. . . thanks. . .
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Old 18th December 2010, 07:20 PM   #1344
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Quote:
Originally Posted by VolMax Audio View Post
@ dj_jojo_md

sir i need your recommendation on what driver should i use for Mt 122 cabinet that can be bought in raon, something that is not too expensive. . . thanks. . .
We have tried Crown JH126 for the 12's and Konzert TDU500 for the Hi drive...we are pleased by its performance...but the original drivers will perform better.

Magandang araw,
jojo
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Old 18th December 2010, 11:39 PM   #1345
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thanks sir. . .
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Old 21st December 2010, 11:06 PM   #1346
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kudos sir zrolsky on your new mb j378..
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Old 22nd December 2010, 03:19 AM   #1347
asia is offline asia  Philippines
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hello all pinoy diy'rs,
sad to hear mr LEACH already died,
but his legend still lives,
i know PA ain the phils., the leach amp plays a big role in the said industry,
everybody knows every pinoy involve in PA must know WESTRACK amp,
surprisingly a leach cloned,
so leach is been there long long before,here.
besides many diy designs now readily available just one click and your there,
i maybe cannot mention it all,
but here some,
quasi,
bora,
apex ooow a lot,
also from another site,
but i will stop there,
maybe its time to share leach cloned here in the phils.,
and let interested diy enjoy the leach clone.
i know how pinoy technician need to keep a secret to catch costomer,
maybe its time to share,for it is the spirit here at diy audio,
everybody knows this
Leach SuperAmp Plans
we know this a very powerful design and open for improvement specially dealing with high power.
just help us how to handle parts replacement,and guide us upon building,
i know that this time,class d and class h is outpouring,
please let me/us experience the mother of all powerful amp diy in the philippines,
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Old 22nd December 2010, 04:54 AM   #1348
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hi asia,

prof leach was a teacher and audio designer in a class on his own, his designs are built by audio DIY'er all around the globe.....

i built my first super leach amp in 1984, a scaled down version using japanese output transistors, 2SC1079/2SC679 on rails of +/-63volts....and the full version a few years later....

i used that amp on a 4way speaker system using 15inch Westwell woofer, 8inch low mid, 4inch cone high mid, dome tweeter arrays.......

the sound was indeed fantastic, very clear mids and highs that is not tiring to listen to even at high volume levels, bass was fabulous, over all very clean sound.....

this leach amp is a high fidelity amplifier......sayang kung gagamitin lang sa PA.....

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....

for PA duties, the leach topology lends itself to class G operation for better efficiency....
__________________
the best advertisement for a good audio design is the number of diy'ers wanting to build it after all the years....never the say so of so called gurus....
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Old 22nd December 2010, 05:17 AM   #1349
asia is offline asia  Philippines
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sir tony,
nice to hear you sir
i will quote what you said from another thread almost the same
yup...motorola dati bago naging on-semi, pwede kang gumamit ng MJL21193/MJL21194 kung pang bass....kung full range mas preffered ko yunng MJL1302/MJL3281....

yung leach amp magandang tumunog, sayang naman kung pang bass lang sya....pero pwede..
link
WestTRACK Amp
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Old 22nd December 2010, 05:19 AM   #1350
asia is offline asia  Philippines
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i hope sir tony express this in english for the moderator
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