PeeCeeBee V4 GB!

[mexakin]

2 aligned, now i need more time and a suitable speaker chasis and the fun begins

 

[shaan]

Hi Sebastian.

Great to know that you have started populating them. If you have a pointed bit then you might want to touch-up the top layer resistor/diode pads (with tiny amount of solder per joint) to make them look Pro!

 

[samsagaz]

Is possible to get 100watts?

 

[bambadoo]

Have 2 goos smps laying. 2*45vdc each. Besides vas transistors and the 4148 diodes and enough cooling.. Is it possible to use? Or will everything be on its limit? And maybe the amp will get more distorted and not so linear?
Sincerely

 

[shaan]

Is possible to get 100watts?

In 4 ohm, Yes.

 

[shaan]

Have 2 goos smps laying. 2*45vdc each. Besides vas transistors and the 4148 diodes and enough cooling.. Is it possible to use? Or will everything be on its limit? And maybe the amp will get more distorted and not so linear?
Sincerely

42VDC is the maximum recommended. However, 45V may work, but no guarantees. Best to keep well within the limit.

 

[rdobbis]

4 pcbs for me

4 pcbs for me: rdobbis

 

[shaan]

Added to GB2 list:

cgraf - 2 PCBs
JaredC79 - 2 PCBs
patriz - 4 PCBs
potepuh - 2 PCBs
kartk - 2 PCBs
zebulo - 2 PCBs
andrewboyp - 6 boards
electrix - 2 PCBs
Manoranjan - 2 PCBs
phill094 - 4 PCBs
ben123 - 4 PCBs
lifewater - 2 PCBs
tome - 2 PCBs
NishantS - 2 PCBs
vasillis - 4 PCBs
muthumuthiah - 2 PCBs
cganeshprabhu - 4 PCBs
richard.C. - 4 PCBs
rdobbis - 4 PCBs

 

[shaan]

GB2 will close tonight. I will send PM to GB2 members for email address tomorrow.

 

[Nikos]

Hi my friend Shaan.
x 2 PCB's nikosokey
Postage to Greece.

 

[mj777]

2 pcbs for me pls.

regards,
mj777

 

[shaan]

GB1 Update:

gusto142 - 2 pcbs - DELIVERED
vgeorge - 2 pcbs - DELIVERED
CB89 - 2 pcbs - DELIVERED
manniraj - 2 pcbs - DELIVERED
spind - 2 pcbs - DELIVERED
chiily - 2 pcbs - DELIVERED
asuslover - 2 pcbs - DELIVERED
joshvi - 2 pcbs - DELIVERED
Sadik - 2 pcbs - DELIVERED
routhun - 2 pcbs - DELIVERED
Dlaw - 2 pcbs - DELIVERED
sashi - 2 pcbs - DELIVERED
ecclesand - 2 pcbs - DELIVERED
mexakin - 2 pcbs - DELIVERED
Torris - 2 pcbs - DELIVERED
touchdown - 2 pcbs - DELIVERED
dondo - 2 pcbs - DELIVERED
thekingstallion - 2 pcbs - DELIVERED
dcoff - 4 pcbs - DELIVERED
cats squirrel - 4 pcbs - DELIVERED
gwrskien - 4 pcbs - DELIVERED
Nisbeth - 4 pcbs - DELIVERED
meanman1964 - 4 pcbs - DELIVERED
Bobo le Chat - 4 pcbs - DELIVERED
markus22ch - 4 pcbs - DELIVERED
Lutto - 4 pcbs - DELIVERED
jls001 - 2 pcbs - DELIVERED
rephil - 6 pcbs - DELIVERED
Dlaw - 4 pcbs - DELIVERED
brunogiovs - 2 pcbs - DELIVERED
Jacques antoine - 2 pcbs - DELIVERED
bambadoo - 2 pcbs - DELIVERED
Dirttracker73 - 2 pcbs - DELIVERED
snake69fast - 2 pcbs - DELIVERED
farl - 2 pcbs - DELIVERED
topicreader - 2 pcbs - DELIVERED
Philipp23 - 2 pcbs - DELIVERED
ikedo65 - 2 pcbs - DELIVERED
acertech - 2 pcbs - DELIVERED
Mattism - 2 pcbs - SHIPPED
rebone - 2 pcbs - SHIPPED
Rick G. - 4 pcbs - SHIPPED
Slartibartfasst - 4 pcbs - SHIPPED
Atupi - 2 pcbs - SHIPPED
arg_ - 2 pcbs - SHIPPED
Morde - 2 pcbs - SHIPPED

 

[shaan]

GB2 list update:

cgraf - 2 PCBs
JaredC79 - 2 PCBs
patriz - 4 PCBs
potepuh - 2 PCBs
kartk - 2 PCBs
zebulo - 2 PCBs
andrewboyp - 6 boards
electrix - 2 PCBs
Manoranjan - 2 PCBs
phill094 - 4 PCBs
ben123 - 4 PCBs
lifewater - 2 PCBs
tome - 2 PCBs
NishantS - 2 PCBs
vasillis - 4 PCBs
muthumuthiah - 2 PCBs
cganeshprabhu - 4 PCBs
richard.C. - 4 PCBs
rdobbis - 4 PCBs
nikosokey - 2 PCBs
mj777 - 2 PCBs

PM will be sent to each member shortly.

 

[arthur]

I want 6 pcbs
Thanks

 

[ecclesand]

UPDATE!!!

Assembled one channel and powered it up. A few minutes of trimming and that's it. Flawless operation with pure music and no ill effects. These "black-beauties" are ready to fly!!!

Using KSE340/350 at VAS, Panasonic M and Nippon Chemi-con SXE electrolytics and everything else pretty much same as before.

Cheers!
shaan

This is probably a stupid question but I'll ask it anyway (I've fried LM3886 chips before). In some pics you posted earlier it shows the ground to the heatsink...but where is that connected on the board itself? Also, the holes for bolting the chips to the heatsinks...do we need to use something non-conductive to bolt it down or does this serve as the ground?

 

[shaan]

This is probably a stupid question but I'll ask it anyway (I've fried LM3886 chips before). In some pics you posted earlier it shows the ground to the heatsink...but where is that connected on the board itself?

When being tested stand-alone or without proper enclosure, the heatsink can be connected to the board's PGND header (which I did), or connect a wire from the heatsink directly to PSU's ground (which I do if previous way is not possible). This is only for test purpose and is a temporary setup.

If you install the boards in a proper metal enclosure with heatsinks then no need to do any of the above, just connect a single wire from PSU ground to a central area of the metal chassis.

Also, the holes for bolting the chips to the heatsinks...do we need to use something non-conductive to bolt it down or does this serve as the ground?

The four plated holes are not Ground and have no electrical connection to any part of the board. So you don't need any insulation between the bolt and the holes.

 

[ecclesand]

When being tested stand-alone or without proper enclosure, the heatsink can be connected to the board's PGND header (which I did), or connect a wire from the heatsink directly to PSU's ground (which I do if previous way is not possible). This is only for test purpose and is a temporary setup.

If you install the boards in a proper metal enclosure with heatsinks then no need to do any of the above, just connect a single wire from PSU ground to a central area of the metal chassis.



The four plated holes are not Ground and have no electrical connection to any part of the board. So you don't need any insulation between the bolt and the holes.

Ah....got it. Me and grounding don't get along too well. Thanks for the helpful information!

 

[shaan]

 

[shaan]

GB2 Update:

cgraf - 2 PCBs - PM SENT
JaredC79 - 2 PCBs - PM SENT
patriz - 4 PCBs - INVOICE SENT - PAID
potepuh - 4 PCBs - INVOICE SENT - PAID
kartk - 2 PCBs - INVOICE SENT
zebulo - 2 PCBs - PM SENT
andrewboyp - 6 boards - INVOICE SENT
electrix - 2 PCBs - INVOICE SENT - PAID
Manoranjan - 2 PCBs - INVOICE SENT
phill094 - 4 PCBs - INVOICE SENT - PAID
ben123 - 4 PCBs - PM SENT
lifewater - 2 PCBs - INVOICE SENT
tome - 2 PCBs - PM SENT
NishantS - 2 PCBs - INVOICE SENT
vasillis - 4 PCBs - INVOICE SENT - PAID
muthumuthiah - 2 PCBs - INVOICE SENT - PAID
cganeshprabhu - 4 PCBs - INVOICE SENT - PAID
richard.C. - 4 PCBs - PM SENT
rdobbis - 4 PCBs - INVOICE SENT - PAID
nikosokey - 2 PCBs - INVOICE SENT - PAID
mj777 - 2 PCBs - INVOICE SENT - PAID
arthur - 6 PCBs - INVOICE SENT - PAID

Members to whom PM has been sent are requested to provide their email address.
If there is any discrepancy in the list then please let me know.
Thanks.

 

[ecclesand]

No sparks or smoke!

Was able to build one channel and make the necessary adjustments...and I didn't fry the chip! Haven't had a chance to hook it up to hear how it sounds yet...hopefully today.