Elliott Sound Products (DIY)

[neutron]

ello, may naka try na ba mag build ng mga sa site nya lalo na itong 1.5KW amp 


PSU


http://sound.westhost.com/p-list.htm

[lhong2x]

meron po ba kayong pcb layout nito bossing???

[neutron]

sa palagay nyo ba magkano ang aabutin nito kung mga 500W/ channel lang?

[Dandy]

jeeez!...  gawan mo ng pcb, gawan ko ng BOM price.  Can test with lower voltage I guess.

[Disabled]

p117 ahahay

[efren]

kahit si Rod Elliot sinabi nya hindi nya ia-attempt gawin yan, totally insane daw 

Just a word of unsolicited advice, take it or ignore it: start with lower power amps before attempting to build this one, unless you are a well seasoned builder who knows the theoretical & technical aspect like a whistle, otherwise you're heading for a disaster for sure

[Johannah Aleksandria]

sa palagay nyo ba magkano ang aabutin nito kung mga 500W/ channel lang?

Kailangan mo ng 70-0-70vac na power supply para sa 500w/channel into 8 ohms.
Pero kung 500watts into 4 ohms, kailangan mo lang ng 55-0-55vac.
Dito kailangan mo at least 1.5kw na trafo para sa stereo.
For 250watts/channel pwede na yung P68 ni Elliot.
Tig 165 pesos ang MJ15025 sa newportelec.com.
Sabi nila may problema daw ang circuit na yan pero palagay ko pwedeng i-try muna sa lower voltage at pag maayos na pwedeng i-try sa rated voltage.

[Dandy]

kahit si Rod Elliot sinabi nya hindi nya ia-attempt gawin yan, totally insane daw  

wow..!   ganun!

@ neutron, interesting itong  post mo.  I wonder if there is really interested in building this AMP scaling the voltage to fit to normal +/-50Vdc,  and reducing the power transistor to 2 or 3 for test (but include all the power transistor pad on the PCB design)  ---- do it for fun or disaster.    

pa OT, or proven circuit hanap,  doon sa Laguisma Electronics series 1,2,  proven na proven  and built by several thousand students and audio hobbyist.

[Johannah Aleksandria]

kahit si Rod Elliot sinabi nya hindi nya ia-attempt gawin yan, totally insane daw 

He's referring to the amount of power, but not to the design.
He said if you could pay him the amount of money involved, he is willing to do it and it will work.

[neutron]

actually halos standard design naman yung input/ pre/ bias stage nya ang nakakamahal dito is yung output Transistors & PSU.

I remember repairing an amp, forgot the model, with almost 12 output transistors, tinest muna namin sa 2 then 4 ok naman na sya, nung nilagay na namin  laht ng trans *pok* tigot "nanaman" silang lahat - aguy!!!

[mund24]

actually halos standard design naman yung input/ pre/ bias stage nya ang nakakamahal dito is yung output Transistors & PSU.

I remember repairing an amp, forgot the model, with almost 12 output transistors, tinest muna namin sa 2 then 4 ok naman na sya, nung nilagay na namin  laht ng trans *pok* tigot "nanaman" silang lahat - aguy!!!

baka something wrong sis? baka may shorted na ouput transistor? either bad batch/fake possible damay yung ibang ouput tran.?

kasi diba mas safe pa nga yung more output trannies VS lower count of output transistor lalo na if lower impedance yung load!