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Old 2nd January 2018, 10:48 AM   #6601
2 picoDumbs is offline 2 picoDumbs  Australia
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Modifying my F6 for the third time.
1) Offsetting PCB mounting holes on heatsink by 40mm to achieve symmetric mosfet placement over heatsink
2) Installing New/Different mosfets
3) Modifying degeneration
4) Changing bias
5) Changing feedback.
6) More capacitance
7) Dual Mono operation

Start drilling new holes tomorrow.
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Old 2nd January 2018, 12:12 PM   #6602
fabrice63 is offline fabrice63  France
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very interesting , dont hesitate to share

especially point 3 to 5

.
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Old 2nd January 2018, 12:42 PM   #6603
2 picoDumbs is offline 2 picoDumbs  Australia
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After I have had a chance to measure the result.
I will notify.
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Old 23rd January 2018, 11:26 PM   #6604
2 picoDumbs is offline 2 picoDumbs  Australia
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Old UMS mounting holes showing poor mosfet placement on heatsink.
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File Type: jpg 20180124_112030.jpg (341.4 KB, 262 views)
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Old 23rd January 2018, 11:29 PM   #6605
2 picoDumbs is offline 2 picoDumbs  Australia
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NEW Picodumb mounting holes showing much better mosfet placement on heatsink.
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File Type: jpg 20180124_112322.jpg (292.5 KB, 253 views)
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Old 24th January 2018, 12:06 AM   #6606
aoc is offline aoc  Malaysia
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Quote:
Originally Posted by 2 picoDumbs View Post
After I have had a chance to measure the result.
I will notify.
I found going dual mono improve the sound significantly... Still have my MOSFET in not ideal location
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Old 24th January 2018, 12:40 AM   #6607
2 picoDumbs is offline 2 picoDumbs  Australia
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Quote:
Originally Posted by aoc View Post
... Still have my MOSFET in not ideal location
It's not too hard to install new pcb mounting holes, just offset each PCB hole by 40mm to the rear of the case.
It's only really a concern on split heatsinks though so maybe not a problem for you.
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Last edited by 2 picoDumbs; 24th January 2018 at 12:42 AM.
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Old 24th January 2018, 05:36 AM   #6608
aoc is offline aoc  Malaysia
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Quote:
Originally Posted by 2 picoDumbs View Post
It's not too hard to install new pcb mounting holes, just offset each PCB hole by 40mm to the rear of the case.
It's only really a concern on split heatsinks though so maybe not a problem for you.
I have split heatsink.
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