DIY Purifi Amp builds

[NTSOS]

Still a bit long, but...
https://www.digikey.com/htmldatasheets/production/1917131/0/0/1/asvhsvh16k51-drawing.html

Thank you Jim!

 

[JimB]

Thank you Jim!

As @NTK posted, the Ghent cable set gives you everything.

 

[LarsS]

So, power connections are now in place in my amp.
Only remaining part is the connection from SMPS J4 to Neurochrome buffers J2. From one connection to two connections. Need to build new ribboncable, is it possible to have three connectors on one ribboncable or are the leads cut in the connector?
Similar to pic but with three connectors.

 

[NTK]

So, power connections are now in place in my amp.
Only remaining part is the connection from SMPS J4 to Neurochrome buffers J2. From one connection to two connections. Need to build new ribboncable, is it possible to have three connectors on one ribboncable or are the leads cut in the connector?
Similar to pic but with three connectors.

Yes. You can do something like this.

 

[JimB]

So, power connections are now in place in my amp.
Only remaining part is the connection from SMPS J4 to Neurochrome buffers J2. From one connection to two connections. Need to build new ribboncable, is it possible to have three connectors on one ribboncable or are the leads cut in the connector?
Similar to pic but with three connectors.
View attachment 94361

You can certainly use more connectors on such a cable, provided the wiring is right. I believe @tomchr has said it is not plug and play (pin to pin). You'll have to confirm pinouts with him, or others who have his board.

 

[LarsS]

Yes. You can do something like this.

View attachment 94362

Thx both @JimB & @NTK , got the design doc from Tom, just waiting for mouser delivery now.

 

[NTSOS]

New Purifi amp build completed using a vintage Audio Research chassis. Details here:
https://sites.google.com/view/mpbspurifiamplifierproject/home
Mike
View attachment 62472

Nice job! Members have said the 1ET400A barely gets warm at loud volume settings......how about the SMPS? Do you have any temp readings for the amp/PS modules at loud settings? Thanks!

 

[phoenixdogfan]

Well the Eval 1 with Ghent's harnesses are on the way back to Purifi, and the SMPS with my homemade harnesses are at the Post office in the Netherlands awaiting delivery to Hypex tomorrow. Should finally, finally get to the bottom of why the Frankenamp is not working.

 

[JimB]

Well the Eval 1 with Ghent's harnesses are on the way back to Purifi, and the SMPS with my homemade harnesses are at the Post office in the Netherlands awaiting delivery to Hypex tomorrow. Should finally, finally get to the bottom of why the Frankenamp is not working.

I sure hope you like it once all of this is done!

EDIT: I meant, I'm sure you'll like it once all this is done!

 

[phoenixdogfan]

I sure hope you like it once all of this is done!

I had better!
Btw, I shared my concerns with Kim of Purifi re the boards being in contact with the back plate. I was told not to worry b/c their model based on the same case touches as well, and it's not problem. So I guess I won't get the back plate modified and save myself a few bucks that way.

All tolled I'm probably around $300-400 over budget what with the shipments of boards back to Hypex including the time customs kicked it back to me, and the custom back end (which ran over $140), and the purchase of the 3m connector, and the purchase of cable from hypex and the purchase of cable from Ghent. Probably closer to $1700 than $1200.

And I still don;t know for certain the root cause. Double checked the aux harness against Ghent's and mine looked perfect and had continuity. It should have worked the first time. I'm really gonna be pist if I find one of the boards was defective to begin with. It will be much better if it turns out to be my own screw up.

 

[daniboun]

Hi guys,
I am from TPA325X world, just a question for experts :
Is it possible to use another SMPS LLC PSU other than the SMPS1200A400 to power the Eval. Purifi modules ?

 

[JimB]

Hi guys,
I am from TPA325X world, just a question for experts :
Is it possible to use another SMPS LLC PSU other than the SMPS1200A400 to power the Eval. Purifi modules ?

Sure. Several people have done this and commented on their choices earlier in this topic.

 

[daniboun]

Sure. Several people have done this and commented on their choices earlier in this topic.

To avoid reading the 87 pages, can I have a link to a compatible and easy-to-connect alternative power supply?

 

[JimB]

To avoid reading the 87 pages, can I have a link to a compatible and easy-to-connect alternative power supply?

Hopefully some of them will reply for you.

 

[Matias]

Hi guys,
I am from TPA325X world, just a question for experts :
Is it possible to use another SMPS LLC PSU other than the SMPS1200A400 to power the Eval. Purifi modules ?

https://www.audiosciencereview.com/forum/index.php?threads/smps-for-audio-applications.14307/

 

[LarsS]

Backplate holes & cutouts all done, polish & paint next.

Ribboncable question, is it possible to have two ribbons into one connector?

 

[boXem | audio]

Backplate holes & cutouts all done, polish & paint next.

Ribboncable question, is it possible to have two ribbons into one connector?

View attachment 94669

One ribbon, no more, no less .
Binding posts look nice, what are they?

 

[LarsS]

One ribbon, no more, no less .
Binding posts ook nice, what are they?

Thx, AECO ABI-0611G

 

[JimB]

...
Ribboncable question, is it possible to have two ribbons into one connector?

Why would you need to do this? You can have one long one with a third connector between the ends. Same result, no?

 

[LarsS]

Why would you need to do this? You can have one long one with a third connector between the ends. Same result, no?

Yes, agree, just investigating if the aesthetics of cable management can be improved in my build ... ;-) not breaking the symmetry ... I know, it’s just me.