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Old 11th December 2011, 08:52 AM   #1741
mrching is offline mrching  Philippines
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Quote:
Originally Posted by nazirdigi View Post
Hi apex sir,
pls can u check this power supply pcb board is correct for h900. i draw from the scematic.
because of the capacitor size, i bought capacitors and not fit to Ur psu baord, so thats why i design this pcb.there are series in caps. 2 into 10000 in series reduced to 5000uf or can u explain.

obviously correct
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Old 11th December 2011, 08:58 AM   #1742
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Originally Posted by mrching View Post
obviously correct
thanks for reply mrching.
but 2 10000uf caps in series reduced to 5000uf, is it correct?
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Old 11th December 2011, 09:04 AM   #1743
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Originally Posted by nazirdigi View Post
thanks for reply mrching.
but 2 10000uf caps in series reduced to 5000uf, is it correct?
Yes, but maximum voltage increas to 126V
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Old 11th December 2011, 09:20 AM   #1744
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Originally Posted by apexaudio View Post
Yes, but maximum voltage increas to 126V
thanks for reply sir.
so in this situation is this power supply enough to run two channels of h900.?
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Old 12th December 2011, 07:25 AM   #1745
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dearsir
i want step draver pcb layout this amp
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Old 13th December 2011, 04:29 PM   #1746
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Originally Posted by apexaudio View Post
Do you have two channels (boards)? Post better pictures and some measurements.
Dear Apex, thanks for reply
yes i have two channels but i test one by one with one 750va transformer , voltage at DC side 110-56-0-56-110 , clipping found when voltage try to step to high rail(voltage measure at both fuses +/- 58v to 65 when clipping)
I use uf4007 instead of BAV21 & MUR1560 in circuit.
sorry for poor english
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Old 18th December 2011, 03:28 AM   #1747
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hi apex sir,
is it possible to get 1400w into 2ohm in h900, any changes in h900 pcb?
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Old 18th December 2011, 09:41 AM   #1748
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Originally Posted by mkubawat View Post
Dear Apex, thanks for reply
yes i have two channels but i test one by one with one 750va transformer , voltage at DC side 110-56-0-56-110 , clipping found when voltage try to step to high rail(voltage measure at both fuses +/- 58v to 65 when clipping)
I use uf4007 instead of BAV21 & MUR1560 in circuit.
sorry for poor english
Test second channel, and compare if there is differences...
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Old 18th December 2011, 09:47 AM   #1749
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Originally Posted by nazirdigi View Post
hi apex sir,
is it possible to get 1400w into 2ohm in h900, any changes in h900 pcb?
I can't suggest to use H900 with 2R load, but many brand class H amps with 4 pairs of outputs suggest 2R load (crown, QSC...).
I suggest H900 with 7 pairs of outputs for 2R load.
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Old 18th December 2011, 11:04 AM   #1750
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ok i edit the h900 v2 for 7pair.
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