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100W Ultimate Fidelity Amplifier
100W Ultimate Fidelity Amplifier
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Old 4th July 2019, 03:07 AM   #11421
hassan4119 is offline hassan4119  Iran
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Quote:
Originally Posted by still4given View Post
Very nice! Love the clear top to show off the DIY. Need some better speakers for such a fine amp.

I'm not crazy about the metal speaker jacks. I used them before and blew the outputs when a misplaced piece of metal fell on them and shorted them.
hi a gain..plz give to me a best and fast speaker protection
best regards
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Old 4th July 2019, 03:18 AM   #11422
hassan4119 is offline hassan4119  Iran
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Quote:
Originally Posted by apexaudio View Post
HX11
hi mr mile...my prroblem about fh11 be solved.with replace 150R with 470R.fh11 is good an stable.
i need a grafic equlizer/tone control with bass booster/fast speaker protection.
please tell wich is best.
best regards...
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Old 4th July 2019, 03:27 AM   #11423
nigelwright7557 is online now nigelwright7557  United Kingdom
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Quote:
Originally Posted by hassan4119 View Post
hi a gain..plz give to me a best and fast speaker protection
best regards
You can pick them up on ebay.
From simple dc detection with mechanical relay to solid state relay with dc detect, over current detect and power up/down relay control.
You pay your money and take your choice.
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Old 4th July 2019, 04:33 AM   #11424
fuego is offline fuego
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Quote:
Originally Posted by Vrystaat View Post
Fuego, very good looking amp, but have you maybe thought about ventilating holes in the top of the cover ?
Now I'm working on this
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Old 4th July 2019, 07:05 AM   #11425
hassan4119 is offline hassan4119  Iran
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Quote:
Originally Posted by nigelwright7557 View Post
You can pick them up on ebay.
From simple dc detection with mechanical relay to solid state relay with dc detect, over current detect and power up/down relay control.
You pay your money and take your choice.
i like that all componennt be diy
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Old 4th July 2019, 08:15 AM   #11426
prasi is offline prasi  India
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100W Ultimate Fidelity Amplifier
Quote:
Originally Posted by hassan4119 View Post
hi a gain..plz give to me a best and fast speaker protection
best regards
Have a look here

SSR for speaker protection?

regards
Prasi
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Old 4th July 2019, 02:55 PM   #11427
bullittstang is online now bullittstang  United States
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100W Ultimate Fidelity Amplifier
Quote:
Originally Posted by hassan4119 View Post
hi mr mile...my prroblem about fh11 be solved.with replace 150R with 470R.fh11 is good an stable.
i need a grafic equlizer/tone control with bass booster/fast speaker protection.
please tell wich is best.
best regards...
This 150r to 470r stopped the power-on noise? To clarify, you changed R9 from this schematic/board layout? I am having similar issue, but negative DC for about 1-2 secs, pulls the woofer in. Hardly any real noise, but if I can avoid I would like to.
Attached Images
File Type: jpg FH11 Ver1.07v.JPG (401.7 KB, 334 views)
File Type: jpg FH11-HV-V1.07 schematic.JPG (130.5 KB, 349 views)
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Old 4th July 2019, 11:26 PM   #11428
ChrisMmm is offline ChrisMmm  New Zealand
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Default AX14 questions

I obtained some boards from PCBway as per this post 100W Ultimate Fidelity Amplifier

Has anybody build from this PCB? I have found the matching BOM and started a shopping basket with Mouser.

prasi, I see you were getting components together a while ago, did you complete the build?

Regards PSU, I have a 300VA 30+30 toroid I am intending to use, that suitable (expecting around 100W output).

Its an interesting and lengthy thread but the number of variants has been somewhat confusing!

Thanks, Chris
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Old 5th July 2019, 01:03 AM   #11429
prasi is offline prasi  India
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Yes, the amp is good to go. Few have it built and using. I haven't built it yet, but plan to.
30-0-30 , 300VA is good for 100W at 8 ohm.
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Old 5th July 2019, 05:31 AM   #11430
rehman is offline rehman  Pakistan
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hi all i have a question. can i make AClass psu and p30 on a single pcb??
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