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Old 26th July 2010, 03:29 PM   #501
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Quote:
Originally Posted by black View Post
ESSBIBOI NSL 32 you have made?
nope...got them replaced...as what sir apex advised,...nsl 32 can be replaced with regular LED and LDR,...47k resistor may also do the job in place of LDR...LED serves as clip indicator...i placed it in front of the amp so i can see if amp clips...then i may lower down the volume...

you can also place LED and LDR in a black tube facing each other...
this serves as an improvised NSL32...
tnx to sir apex advices...everything worked fine...
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Old 26th July 2010, 04:38 PM   #502
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Originally Posted by eesbiboi View Post
i simply added power trannies on it...for safety operations...since my heatsinks are very small and thin...
esbiboi what trannies you used on output mjl21193 or 2sc5200 where did you buy the parts at cebu? coz im planning to make?
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Old 26th July 2010, 04:48 PM   #503
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Originally Posted by rhodrich View Post
esbiboi what trannies you used on output mjl21193 or 2sc5200 where did you buy the parts at cebu? coz im planning to make?
i used 2sc5200/2sa1943...are you living in cebu too???...i bought them at advance electronic supply...
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Old 1st August 2010, 03:32 PM   #504
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Default power out bridge in 4 ohms

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Originally Posted by apexaudio View Post
H900 is 2x500W on 8R
Hi Apex,

What's the output power of your H900 in bridge config at 4 ohms speaker?

Thanks,

Joel
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Old 1st August 2010, 08:42 PM   #505
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Originally Posted by Tube Pro View Post
Hi Apex,

What's the output power of your H900 in bridge config at 4 ohms speaker?

Thanks,

Joel
I not recomand to use H900 in bridge on 4 ohms load.
Regards
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Old 2nd August 2010, 05:32 AM   #506
hamub is offline hamub  Zimbabwe
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Default Transformer

Quote:
Originally Posted by eesbiboi View Post
hi everyone!!!...
today i've finished b500 and have mounted in the chasis...
i've tested it today...amp sounded reall good...very good for mids...
very crystal clear audio...very nice highs too...
one should make this amp...
tnx a lot to sir apex for sharing this very good sounding amp with us...
thank you sir...


this amp deserves a drink...
yo thats a big transformer. Where did you get it and what are the specs?
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Old 2nd August 2010, 07:41 AM   #507
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yo thats a big transformer. Where did you get it and what are the specs?
tnx...

my friend made that for me...he made it in just a day by hand...
EI core with 0v 220v 240v primary and 50 0 50 secondary @ 20amperes...
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Old 2nd August 2010, 10:02 AM   #508
hamub is offline hamub  Zimbabwe
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Quote:
Originally Posted by eesbiboi View Post
tnx...

my friend made that for me...he made it in just a day by hand...
EI core with 0v 220v 240v primary and 50 0 50 secondary @ 20amperes...
thats nice. Is it possible to make a similar transformer from a microwave oven transformer?. I have rewound one and its giving 35-0-35 ac. At no load its not heating at all. Is it suitable for the B500?

Thanks in advance
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Old 2nd August 2010, 01:59 PM   #509
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Quote:
Originally Posted by hamub View Post
thats nice. Is it possible to make a similar transformer from a microwave oven transformer?. I have rewound one and its giving 35-0-35 ac. At no load its not heating at all. Is it suitable for the B500?

Thanks in advance
Yes, but voltage to low for B500, better use for this amp 100W Ultimate Fidelity Amplifier or this DC Servo MOSFET Amplifier
Regards
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Old 2nd August 2010, 05:35 PM   #510
hamub is offline hamub  Zimbabwe
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Originally Posted by apexaudio View Post
Yes, but voltage to low for B500, better use for this amp 100W Ultimate Fidelity Amplifier or this DC Servo MOSFET Amplifier
Regards
if i use it with the b500 how much power can i get considering that after rectifying its gonna be something like 45-0-45. I want to use this transformer till i get a good one
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