• The Vendor's Bazaar forum is for commercial offers and transactions. Only unmoderated members can post here.

    diyAudio provides this forum for the convenience of our members, but makes no warranty nor assumes any responsibility. We do not vet any members. Use of this facility is at your own risk. Customers can post any issues in those threads as long as it is done in a civil manner. All diyAudio rules about conduct apply and will be enforced.

First One - mosFET amplifier module

Jump to Latest
#3,062
Hi Allen,

Very nice build you've done !
Great guide, can help a lot of first DIYers 🙂

I also had a 3mm tap that broke off 😱 but I am using the Hifi2000 400mm case that uses 200mm heatsinks, so for me it was much easier, just swap the two heatsink parts 🙂
After that accident I used cutoil for the taps, makes it more easier to tap the holes.
Just like you, I use Alumina ceramic for the power transistors and made some custom aluminum plates of 1mm thick for the drivers 🙂

Regards,
Danny
 
#3,063
danny_66 said:
Hi Allen,

Very nice build you've done !
Great guide, can help a lot of first DIYers 🙂

I also had a 3mm tap that broke off 😱 but I am using the Hifi2000 400mm case that uses 200mm heatsinks, so for me it was much easier, just swap the two heatsink parts 🙂
After that accident I used cutoil for the taps, makes it more easier to tap the holes.
Just like you, I use Alumina ceramic for the power transistors and made some custom aluminum plates of 1mm thick for the drivers 🙂

Regards,
Danny
Click to expand...

Hey I have very good results with caramba spray when making the 3 mm .
 
#3,067
Glad I got the Molex to work!

hose4 said:
As for input cable, most of FO1.2 and FO1.4 testing was done with CAT6 single twisted pair for signal cable. Coax is out of picture for almost 2 years since it was inferior sonically and also by measurement (lower THD with twisted pair).
Click to expand...

Thanks for clarifying.

Sorry Lazy can not part take on the Joy he helped create over here. He's got an exceptional product, maybe not the end all be all (who can say what that is), but something Great none the less.

I chose the 22 gauge twisted pair wiring and created shielding, as that is what came to mind after reading the Manual I received with the Modules (which I assumed to be Lazy's current recommendation - opps 😱 ):

"Cable connecting RCA terminals to PCB pads has to be as short as possible, double shielded coaxial cable or 50 to 75 Ohm impedance is recommended. Although a twisted pair of a solid core wires can also be used if an internal input connection length is shorter than few cm."

I can try other wiring arrangements, I just need to order more Molex pins. 🙂

I would be curious to know if the shielding lowers THD or not, with the CAT6 single twisted pair. I am also curious about the other alloys others are trying with this amp. My guess is they have the "choice" alloy thru out the whole system, yes?

I am sure I will be coming back to this for the wiring of what ever DAC solution I can find, so at that time, I can upgrade the wiring at least on the signal side of my system. I can do the speaker side when I am building the next set of Arrays. 😀

I will keep You posted on what works with my synergy of components.

Allen
 
#3,070
This is what I did:
- take a twisted pair from cat5
- wrap teflon plumber tap around
- wrap self adhesive aluminum foil around
- put multi strand wire between aluminum foil for ground or earth connection.

And you've got your cat5 cable with shielding 🙂
 

Attachments

  • IC.jpg
    IC.jpg
    232.8 KB · Views: 449
You must log in or register to reply here.
Top Bottom