PeeCeeBee V4H GB

[outtek]

Hi Shaan, please note me for two amp boards plus the power output mosfets for the two boards.
Thanks.

 

[kpsthakur]

One channel done...quite laborious work I must say...but works good

 

[kpsthakur]

Hope I build the second one before chassis arrives

 

[manniraj]

Looks good, I see from the pic that some of the legs of the mosfets are not soldered on top with gaps on the pads. May be it will be better if you can reflow some solder again on those legs.

 

[kpsthakur]

There’s a lot on downside, so not too much to worry...soldering the MOSFET’s from the top after the components is very difficult

 

[craydive]

thanks Ckwong99, Nisbeth and gwrskien, will look into those resistors

 

[asuslover]

Manniraj is right about solder on top too, for cold joints and of course, it will look better too.

 

[kpsthakur]

Humm maybe in second channel, not going to fiddle with this one [emoji41]

 

[loafimus]

Shaan, do you have any remaining boards or an idea of when the next group buy will take place? I previously got the original V4 peeceebee, but have not built them yet. After the modifications and the release of this one, I'm wondering if I should just do this.

 

[shaan]

Shaan, do you have any remaining boards or an idea of when the next group buy will take place? I previously got the original V4 peeceebee, but have not built them yet. After the modifications and the release of this one, I'm wondering if I should just do this.

All the boards from last GB are taken. Next GB starts as soon as anyone posts username followed by number of PCBs. 🙂

 

[supernet]

Hi Shaan. I accidently delete your measage so I am asking you again: Which is minimum power supply voltage at which this amplifier works perfectly and how much power is expected?

 

[shaan]

I'd say go for 56v. To me it seems the amp performs best at this voltage. Anything lower and it may or may not sound as good, but will work fine.

 

[ckwong99]

Hi Shaan, one of the technical query for this board about the individual DC supply for the front end. If i use 35VDC for backend but use 38 ~ 40VDC for front end. Then how can i connect the front end rail to the board. And what component should be modified ? Thanks for your support in advance.

 

[ajit]

starting a new request GB:

Ajit - 2pc

 

[steefdebruijn]

Ajit - 2pc
steefdebruijn - 2pc

 

[amitskamal]

Ajit - 2pc
steefdebruijn - 2pc
amitskamal - 1 full stereo kit with all components.

 

[Neurotica]

Ajit - 2pc
steefdebruijn - 2pc
amitskamal - 1 full stereo kit with all components.
Neurotica - 2 PCBs

 

[The Prof]

@kpsthakur,
Great looking build!
Do post your impressions soon...

 

[shaan]

View attachment 676432

I like those huge ceramics!

 

[shaan]

Hi Shaan, one of the technical query for this board about the individual DC supply for the front end. If i use 35VDC for backend but use 38 ~ 40VDC for front end. Then how can i connect the front end rail to the board. And what component should be modified ? Thanks for your support in advance.

Urrrgh sorry for late reply!😱

Remove D1+D2.
Connect +ve front end rail to the pad for D1's cathode pin.
Connect -ve front end rail to the pad for D2's anode pin.
Make sure both PSUs have a well terminated common ground node. Both PGND and SGND must be connected to that node either with individual wires or by connecting SGND to PGND first and then PGND to ground.