100W Ultimate Fidelity Amplifier

ammel68 · 2016-02-29 4:19 am

still4given said:
I just want to state that this is not a competition for me. I couldn't care less how many amps someone else has built. I do this for my enjoyment and to learn.

Terry, my "dethroned" statement in an earlier post was just a little humor on my part and wasn't meant for you to actually take seriously or out of context.

still4given · 2016-02-29 6:47 am

No worries. My statement was more in response to another person's need to use my name to express how many amps he claims to have built. I really couldn't care less. I will ignore any further claims or opinions he has to offer.

I'm simply here to report on what I have actually experienced and to learn from honest people. Looking forward to Mile's next creation.

Blessings, Terry

sownel · 2016-02-29 7:38 am

Greetings mr.terry pls share h900v2 pcb pdf files

gaborbela · 2016-02-29 7:43 am

still4given said:
No worries. My statement was more in response to another person's need to use my name to express how many amps he claims to have built. I really couldn't care less. I will ignore any further claims or opinions he has to offer.

I'm simply here to report on what I have actually experienced and to learn from honest people. Looking forward to Mile's next creation.

Blessings, Terry

prasi · 2016-02-29 8:07 am

Right on Terry!.

Some seem to think that thanking the designer after having built his design as diplomacy. I always thought it is decency!.

reg
Prasi

44250 · 2016-02-29 8:36 am

Terry,Olaf, Alexmm... did really a good job here at forum,shared so much experience, pcb layouts and measurements-and they really should not be mentioned in such way,none of them.
.
keep up with a good work!

prasi · 2016-02-29 12:05 pm

still4given said:
Now, I was bored today so I built a few more of the little SSR protection boards that use the MAC97a. I built a few before and struggled to get it to trip off with less than about 6vdc on the speaker out. Today I swapped the 4k7 resistors with 1k6 and now they will trip with less than +-3vdc. I also checked by playing very loud music through them to make sure that the AC output wouldn't trip them. So I just wanted to share for those who may have built them of are planning to.

Blessings, Terry

Hi Terry,
Could you point me to the post number of sch and layout for the SSR unit that you built? I got confused, as there are many revisions in my PC and not able to locate latest

!.
reg
Prasi

thimios · 2016-02-29 2:16 pm

still4given said:
I just want to state that this is not a competition for me. I couldn't care less how many amps someone else has built. I do this for my enjoyment and to learn. The fact that Mile is so generous as to provide so many different designs for us to build is a dream come true for a guy like me. OS and Valery are in the same league.

Now, I was bored today so I built a few more of the little SSR protection boards that use the MAC97a. I built a few before and struggled to get it to trip off with less than about 6vdc on the speaker out. Today I swapped the 4k7 resistors with 1k6 and now they will trip with less than +-3vdc. I also checked by playing very loud music through them to make sure that the AC output wouldn't trip them. So I just wanted to share for those who may have built them of are planning to.

Blessings, Terry

I hear hum when testing this protection board .
The hum stop when separate power supply used.
Is it ok using separate power supply?
The latest version posted by Mile but no one make a pcb

I will try to find this and report again.

It seems that i found it

vargasmongo3435 · 2016-02-29 3:27 pm

hey Terry I forgot to ask you did you find those makros that I send you useful ?

Regards
Juan

sonal kunal · 2016-02-29 5:35 pm

benz2 said:
Have shrunk the board only slightly. There is a price break @ 5.0cmX5.0cm for some Fab houses. I can continue to try, I guess, but it's possible that it can't be done within the design assumptions. Other stuff: the 5X5 limitation is for production boards - the current design constraints are for home-brew PCBs. Alternatively, I was thinking of moving all of the big caps off of the board and wiring them in. That approach can be tested with the current design.

BF

benz2 gave me idea to fit FX8 into 50mm X 50mm pcb. 22uf decoupling capacitor used instead of 47uf. I don't have keltron 47uf/ 40v or 50v capacitor to measure all of my 47uf are 63v.

22uf capacitor used on layout has 6.5mm diameter.

Regards
Sonal Kunal

still4given · 2016-02-29 5:45 pm

prasi said:
Hi Terry,
Could you point me to the post number of sch and layout for the SSR unit that you built? I got confused, as there are many revisions in my PC and not able to locate latest!.
reg
Prasi

Hi Prasi,

It is in post 5592. I built three different layouts and they all work but my favorite one in in post #5597.

I hear hum when testing this protection board .
The hum stop when separate power supply used.
Is it ok using separate power supply?
The latest version posted by Mile but no one make a pcb
I will try to find this and report again.
It seems that i found it

Hi Thimios,

I had hum the first time I hooked one up but then I found that if I only hooked the ground up at the main ground lug and ran one wire from one side of the transformer's secondary it is hum free.

Hi Juan,

Yes, I have been using some of them. Thanks!

prasi · 2016-02-29 6:03 pm

sonal kunal said:
benz2 gave me idea to fit FX8 into 50mm X 50mm pcb. 22uf decoupling capacitor used instead of 47uf. I don't have keltron 47uf/ 40v or 50v capacitor to measure all of my 47uf are 63v.

22uf capacitor used on layout has 6.5mm diameter.

Regards
Sonal Kunal

Beautiful piece of work!. soild state amp in 50mmx50mm. One thing, Mr.Miles had told me to use heat sink for VAS( http://www.diyaudio.com/forums/soli...imate-fidelity-amplifier-618.html#post4605320 ). Will it be possible to fit a small To126 Heatsink on your PCB(like the one's Rick had used)?
reg
prasi

still4given · 2016-02-29 9:25 pm

Hi Thimios

I tested again and your are correct. There is no hum with only one channel connected but with both connected, I get a ground loop through the input ground. I will try some things and see if I can find a solution.

still4given · 2016-02-29 9:29 pm

prasi said:
Beautiful piece of work!. soild state amp in 50mmx50mm. One thing, Mr.Miles had told me to use heat sink for VAS( http://www.diyaudio.com/forums/soli...imate-fidelity-amplifier-618.html#post4605320 ). Will it be possible to fit a small To126 Heatsink on your PCB(like the one's Rick had used)?
reg
prasi

I hope Sonal doesn't mind. I moved things around and made room for a sheet metal heatsink. I'm not sure if that will be enough.

still4given · 2016-02-29 10:16 pm

still4given said:
Hi Thimios

I tested again and your are correct. There is no hum with only one channel connected but with both connected, I get a ground loop through the input ground. I will try some things and see if I can find a solution.

Hi Thimis,

After further testing I found that as long as I feed the ground on the SSR from the Star ground, there is no hum. Previously I had it hooked up to the ground lug on one of the channels. Feeding from the star solved it.

Rick G · 2016-02-29 11:11 pm

Terry,
i see that the 100pf above the BD140 & the C. of the BD140 on your new layout is NOT connected to the 1n4148 & 1k trimmer. is this an error.? Otherwise Looks Good.

Rick

still4given · 2016-03-01 12:04 am

Rick G said:
Terry,
i see that the 100pf above the BD140 & the C. of the BD140 on your new layout is NOT connected to the 1n4148 & 1k trimmer. is this an error.? Otherwise Looks Good.

Rick

Good catch, thanks. To be honest, I don't think the zeners and 1N4148s are necessary with the laterals. Built in to the devices.

Dacz · 2016-03-01 2:45 am

hi Terry, can you share the sprint file of fx-8

still4given · 2016-03-01 4:03 am

Dacz said:
hi Terry, can you share the sprint file of fx-8

This one is Sonal's layout. If he doesn't mind I'm glad to.

thimios · 2016-03-01 6:58 am

still4given said:
Hi Thimis,

After further testing I found that as long as I feed the ground on the SSR from the Star ground, there is no hum. Previously I had it hooked up to the ground lug on one of the channels. Feeding from the star solved it.

Hi Terry,my test was with one channel only and star ground as ground position.
Hum was clearly heard. Tested amplifier was Shaan PeeCeeBee.
I believe that a separate power supply is necessary. You can have the main power supply under control using an opto isolator.
Mile, can you modify the circuit in this way?

100W Ultimate Fidelity Amplifier

Member

Member

Member

Member

Attachments

Member

Member

Member

Member

Attachments

Member

Member

Attachments

Member

Member

Member

Member

Attachments

Member

Member

Member

Attachments

Member

Member

Member