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Old 10th May 2013, 09:45 AM   #1
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Default 4CH 1200W ICEPOWER AMP/ I changed it

the original ICEPOWER1000A power is low, which is only 500w/8ohms.
I changed the circuit a little, added output transistors, and increase the voltage to 150V, so that the power now is 1200w/8ohms, 2400w/4ohms.
check out the pictures.
any comments is appreciated, thanks!
Attached Images
File Type: jpg 1200W AMP1.jpg (156.3 KB, 581 views)
File Type: jpg 1200W AMP2.jpg (87.2 KB, 551 views)
File Type: jpg 1200W AMP3.jpg (227.2 KB, 533 views)
File Type: jpg 1200W AMP.jpg (226.1 KB, 526 views)
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Old 10th May 2013, 10:05 AM   #2
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Quote:
Originally Posted by yorkjoy View Post
the original ICEPOWER1000A power is low, which is only 500w/8ohms.
I changed the circuit a little, added output transistors, and increase the voltage to 150V, so that the power now is 1200w/8ohms, 2400w/4ohms.
check out the pictures.
any comments is appreciated, thanks!
Interesting mod. what is the rail voltage now after the mod? and what was the before and after output transistors ?

I'm sure increasing the supply voltage wont cause side effects what is the before and after supply rails ?
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Old 11th May 2013, 08:06 AM   #3
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Quote:
Originally Posted by Reactance View Post
Interesting mod. what is the rail voltage now after the mod? and what was the before and after output transistors ?

I'm sure increasing the supply voltage wont cause side effects what is the before and after supply rails ?
the voltage was 120V, and now is 150V.
the output transistor was FDB2532, and now is IRFB4427.
the drive was IR2010, and now is IR2110.
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Old 11th May 2013, 08:22 AM   #4
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hehe...when available will try to modify the circuit board and use T0247 Encapsulation IRFP4232 IXFK102N30P, 2000w/8ohms, and see whether the module can reach to 2000w/8ohms
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Old 11th May 2013, 04:14 PM   #5
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Interesting...
Do you have the original and modified schematics? If so, would you be willing to share?
Which power supply are you using? Is that from another commercial product?
Thanks!
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Old 16th May 2013, 01:18 AM   #6
Shaun is offline Shaun  South Africa
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Quote:
Originally Posted by yorkjoy View Post
the voltage was 120V, and now is 150V.
the output transistor was FDB2532, and now is IRFB4427.
the drive was IR2010, and now is IR2110.
What is the operating frequency of this circuit?
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Old 16th May 2013, 03:15 AM   #7
paskal9 is offline paskal9  Malaysia
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have you tested the amp at maximum output or near maximum output? drawing more than 1kw of power from any type of design is a mean feat, and not many are capable of doing so.

it's one thing to make the circuit stable at high rail voltage, but that doesn't necessarily mean that it'll be able to sustain high power output and still be stable while doing so.
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Old 16th May 2013, 09:33 AM   #8
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Originally Posted by yorkjoy View Post
hehe...when available will try to modify the circuit board and use T0247 Encapsulation IRFP4232 IXFK102N30P, 2000w/8ohms, and see whether the module can reach to 2000w/8ohms
Your future attempt to increase the power supply further will render the device into flames, i don't think the original design will permit this, i do think its a bit over ambitious.


Hypex modules don't allow this form of modifications for a reason im looking at a datasheet for its Ncore modules and see its got UV, OV and OC protection schemes incorporated into the modules.
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Old 16th May 2013, 02:24 PM   #9
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Originally Posted by dudaindc View Post
Interesting...
Do you have the original and modified schematics? If so, would you be willing to share?
Which power supply are you using? Is that from another commercial product?
Thanks!
we use the power supply simlilar to the Labgruppen FP series, just change double power supply to single power supply.
I plan to make it to a commercial product, now it's just a demo.
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Old 16th May 2013, 02:25 PM   #10
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Originally Posted by Shaun View Post
What is the operating frequency of this circuit?
330KHz
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