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
obviously correct
thanks for reply mrching.
but 2 10000uf caps in series reduced to 5000uf, is it correct?
thanks for reply mrching.
but 2 10000uf caps in series reduced to 5000uf, is it correct?
Yes, but maximum voltage increas to 126V
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.?
Dear Apex, thanks for replyDo you have two channels (boards)? Post better pictures and some measurements.
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
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...
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.
HI APEX SIR,
i edited with 7 pair. only right side finished.
pls check for errors.
i put two 4.7k/5w resistors in parralel to reduce the heat.
is it ok to drive 7 pairs with this drivers.
there is error transistor place c5200 instead a1943.
i edited with 7 pair. only right side finished.
pls check for errors.
i put two 4.7k/5w resistors in parralel to reduce the heat.
is it ok to drive 7 pairs with this drivers.
there is error transistor place c5200 instead a1943.
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HI APEX SIR,
i edited with 7 pair. only right side finished.
pls check for errors.
i put two 4.7k/5w resistors in parralel to reduce the heat.
is it ok to drive 7 pairs with this drivers.
there is error transistor place c5200 instead a1943.
For 7 pairs of outputs you must use predrivers in triple emiter folover topology.
same problem in both channelTest second channel, and compare if there is differences...
hi apx sir,
pls can u check this tef is correct on this image.
It's correct.
It's correct.
thanks sir,
so now i can add another three pair of ouput for triple darlington.
hi apex sir,
one of my customer asked for 300w and 500w into 4ohm load amp,so if i reduced the power voltages. i think its ok. so for 300 and 500w what is the dc voltage to provide for this h900?
one of my customer asked for 300w and 500w into 4ohm load amp,so if i reduced the power voltages. i think its ok. so for 300 and 500w what is the dc voltage to provide for this h900?
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