Xmas Amp - Dibya's TDA7293 by Jhofland

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Francois G

Francois G

Member
Joined 2004
Paid Member
MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
Hiten / 2 boards / India
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
 
asuslover

asuslover

Member
Joined 2016
MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
Hiten / 2 boards / India
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
 
Hiten

Hiten

Member
Joined 2010
Gentlemen please use following list as said in earlier post. Merry christmas everyone.


MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
 
G

Guerilla

Member
Joined 2018
MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
Guerilla / 2 boards /Denmark
 
astromo

astromo

Member
Joined 2017
MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
Guerilla / 2 boards /Denmark
astromo / 2 boards / Australia

(13 pairs so far)


thanks and merry christmas :hohoho:
 
Kay Pirinha

Kay Pirinha

Member
Joined 2011
I'm also interested in a pair of these wonderful boards. Thanks to the developers and all other persons involved!


MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
Guerilla / 2 boards /Denmark
astromo / 2 boards / Australia
Kay Pirinha / 2 boards / Germany


Physical postage addresses will be exchanged by PM, I guess?


Merry Xmas to anyone out there!
 
xrk971

xrk971

Founder of XSA-Labs
Joined 2012
etsy.com/shop/XRKAudio
Paid Member
If the moderators approve, the easiest way for me to implement the free board giveaway would be to list it on my shop as an item for $0.20 (minimum price allowed) and with typical auto calculated shipping which comes out to about what I said earlier. The logistics are much simplified this way.

The alternative is to collect names and addresses via PM and have you PayPal me funds.
 
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pinkfloyd4ever

pinkfloyd4ever

Member
Joined 2008
youtube.com/watch?v=dQw4w9WgXcQ
Hmmm this is very interesting. I built a Mauro Penesa-designed LM3886 (MyRef Rev_C) 10 years or so ago and it’s still my everyday amp. It would be interesting to compare to this...and most importantly, I can afford to build it haha.

So it looks like once you populate the PCB (1 per channel) you just need to add a transformer, 15,000-20,000 uF capacitance, and chassis, correct? Any advantage to a dual mono design with separate transformers and cap bank per channel?

What are the heatsinking requirements?

Whether or not I do decide to get a set of PCBs, big thanks to Dibya, Jhofland, and xrk971 for doing this!:santa2:
 
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pinkfloyd4ever

pinkfloyd4ever

Member
Joined 2008
youtube.com/watch?v=dQw4w9WgXcQ
Ah who am I kidding? Heck yes I’ll take a pair of boards.

MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
Guerilla / 2 boards /Denmark
astromo / 2 boards / Australia
Kay Pirinha / 2 boards / Germany
pinkfloyd4ever/ 2 boards / USA

Thanks again to Dibya, Jhofland, and xrk971!
 
S

Sixto

Member
Joined 2014
I'm in,

Ok, edited message to include last posted name...

MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
Guerilla / 2 boards /Denmark
astromo / 2 boards / Australia
Kay Pirinha / 2 boards / Germany
pinkfloyd4ever/ 2 boards / USA
Sixto / 2 boards / USA

ah, the risks of two people responding to the ame message, sorry Pink! Copied your name back in.
 
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T

tubesguy

Member
Joined 2002
buyoutdickvitale.com
If Donald is in, I better be also. Thanks, X.

MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
Guerilla / 2 boards /Denmark
astromo / 2 boards / Australia
Kay Pirinha / 2 boards / Germany
pinkfloyd4ever/ 2 boards / USA
tubesguy/2 boards/USA
 
Vunce

Vunce

Member
Joined 2014
Paid Member
MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
Guerilla / 2 boards /Denmark
astromo / 2 boards / Australia
Kay Pirinha / 2 boards / Germany
pinkfloyd4ever/ 2 boards / USA
Sixto / 2 boards / USA
Tubesguy / 2 boards / USA
 
e_fortier

e_fortier

Member
Joined 2001
MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
Guerilla / 2 boards /Denmark
astromo / 2 boards / Australia
Kay Pirinha / 2 boards / Germany
pinkfloyd4ever/ 2 boards / USA
Sixto / 2 boards / USA
Tubesguy / 2 boards / USA
E_Fortier / 2 boards / Canada

Thanks a lot X and the designer group!
 
H

Hicoco

Member
Joined 2018
Paid Member
MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
Guerilla / 2 boards /Denmark
astromo / 2 boards / Australia
Kay Pirinha / 2 boards / Germany
pinkfloyd4ever/ 2 boards / USA
Sixto / 2 boards / USA
Tubesguy / 2 boards / USA
E_Fortier / 2 boards / Canada
Hicoco / 2 boards / France




Thanks and Happy Holidays
 
e_fortier

e_fortier

Member
Joined 2001
MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
Guerilla / 2 boards /Denmark
astromo / 2 boards / Australia
Kay Pirinha / 2 boards / Germany
pinkfloyd4ever/ 2 boards / USA
Sixto / 2 boards / USA
Tubesguy / 2 boards / USA
E_Fortier / 2 boards / Canada
Hicoco / 2 boards / France
Liva / 2 boards / Canada
 
xrk971

xrk971

Founder of XSA-Labs
Joined 2012
etsy.com/shop/XRKAudio
Paid Member
pinkfloyd4ever said:
So it looks like once you populate the PCB (1 per channel) you just need to add a transformer, 15,000-20,000 uF capacitance, and chassis, correct? Any advantage to a dual mono design with separate transformers and cap bank per channel?

What are the heatsinking requirements?
Click to expand...

Dual trafos and dual monoblocks have better stereo imaging and less prone to ground loop hum. This is oversized at 200VA but would make a nice trafo:

AS-2225 - 200VA 25V Transformer - AnTek Products Corp

If going single trafo stereo, this one should work well:

AS-3225 - 300VA 25V Transformer - AnTek Products Corp

I have found this heatsink to be more than adequate for 38w class Chipamps:

Awxlumv Aluminum Heatsink 60 x150 x 25 mm / 2.36x 5.91x 0.98 Inch Radiator for Circuit Board PCB Heat Sinks Led Cooling Cooler Amplifier Transistor Semiconductor Devices with 24 pcs Fins - Sliver https://www.amazon.com/dp/B07VDHQDQT/ref=cm_sw_r_cp_api_glc_fabc_A225FbNCEX39H

So $41 for the trafo (plus $15 shipping from Antek) and $20 for the two heatsinks and you have most of your amp. You can use any number of basic bridge and cap PSU. Or make one as P2P. It’s easy.

I have seen better ones but this should suffice for a PSU:
ZG Amplifier PSU kit with 4 X10000uFNover LA Audio Grade Capacitor/Power supply | eBay
 
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Kokanee

Kokanee

Member
Joined 2010
Paid Member
I would like a pair also.

MaxReboBand / 2 boards / USA
as8912 / 2 boards / USA
ahtllc / 2 boards / USA
dBel84 / 2 boards / USA
Flamethrower1 /2 boards/ USA
Signal Lost / 2 boards / USA
diy.tiger / 2 boards / NZ
MShipmanPE/ 2 boards / USA
Angchuck / 2 boards / Singapore
Francois G / 2 boards / USA
Asuslover /2 boards /USA
Guerilla / 2 boards /Denmark
astromo / 2 boards / Australia
Kay Pirinha / 2 boards / Germany
pinkfloyd4ever/ 2 boards / USA
Sixto / 2 boards / USA
Tubesguy / 2 boards / USA
E_Fortier / 2 boards / Canada
Hicoco / 2 boards / France
Liva / 2 boards / Canada
Kokanee / 2 boards / Canada

Thank you to the design team
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