Group Buy for LM4651/ 4652 Subwoofer Amplifier PCB

DSchmidt · 3rd July 2005, 10:53 PM

Is there interest in doing a group buy for a PCB for the LM4651/ 4652 Sub Woofer Amplifier chips (National Semiconductor: http://www.national.com/pf/LM/LM4651.html).

This group buy would be for the printed circuit board and possibly components depending on everyone's interest. The printed circuit board would be double sided, with solder mask and silk screen.

Cost will depend upon quantity. I'm thinking the design would be identical to National's eval board which is a proven design and gives some flexibility.

Let me know if you are interested.

jaudio · 3rd July 2005, 11:58 PM

Im in for ? . Depends on price.

jimbo1968 · 6th July 2005, 01:12 PM

Perhaps if you started a thread to discuss the advantages over using say LM4780 you could drum up some more interest?

curva · 6th July 2005, 07:39 PM

advantages are clear: class d and more power. perfect for a subwoofer...

I am in, it depends on the price how many.

Brion55 · 6th July 2005, 07:45 PM

I might be interested in a few depending on price.

nullspace · 6th July 2005, 07:46 PM

Sounds like an excellent project.

I'm in for 2, maybe 3 depending on pricing.

Bricolo · 6th July 2005, 10:12 PM

is it a group buy for the subwoofer pcb or the "full range" pcb?

curva · 6th July 2005, 10:16 PM

the way I see it these chips can be used only for a subwooooooooo woooo wooooo woooooo

agent.5 · 6th July 2005, 10:42 PM

I need a bit more than 170W though. Will your design allow us to parallel more chips for more power?

leadbelly · 6th July 2005, 10:56 PM

Maybe you should post something in the Class D forum? You seem to be attracting quite a few stupid posts.

I may be in depending on price.

3rd July 2005, 10:53 PM	#1
DSchmidt diyAudio Member Join Date: Nov 2004 Location: NY, NY	Group Buy for LM4651/ 4652 Subwoofer Amplifier PCB Is there interest in doing a group buy for a PCB for the LM4651/ 4652 Sub Woofer Amplifier chips (National Semiconductor: http://www.national.com/pf/LM/LM4651.html). This group buy would be for the printed circuit board and possibly components depending on everyone's interest. The printed circuit board would be double sided, with solder mask and silk screen. Cost will depend upon quantity. I'm thinking the design would be identical to National's eval board which is a proven design and gives some flexibility. Let me know if you are interested.

6th July 2005, 07:45 PM	#5
Brion55 diyAudio Member Join Date: Apr 2005 Location: Kansas	I might be interested in a few depending on price. __________________ How do I put the smoke back in this thing?

6th July 2005, 10:12 PM	#7
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	is it a group buy for the subwoofer pcb or the "full range" pcb? __________________ Just remember: in theory there's no difference between theory and practice. But in practice it usually is quite a bit difference... Bob Pease

6th July 2005, 10:56 PM	#10
leadbelly diyAudio Member Join Date: Dec 2002 Location: Calgary, Alberta	Maybe you should post something in the Class D forum? You seem to be attracting quite a few stupid posts. I may be in depending on price. __________________ Aerodynamics are for people who can't build engines. Enzo Ferrari

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3rd July 2005, 11:58 PM	#2
jaudio diyAudio Member Join Date: Oct 2004	Im in for ? . Depends on price.

6th July 2005, 01:12 PM	#3
jimbo1968 diyAudio Member Join Date: Nov 2004 Location: UK, bristol	Perhaps if you started a thread to discuss the advantages over using say LM4780 you could drum up some more interest?

6th July 2005, 07:39 PM	#4
curva diyAudio Member Join Date: Dec 2004 Location: the web	advantages are clear: class d and more power. perfect for a subwoofer... I am in, it depends on the price how many.

6th July 2005, 07:46 PM	#6
nullspace diyAudio Member Join Date: Oct 2004 Location: Phila., PA	Sounds like an excellent project. I'm in for 2, maybe 3 depending on pricing.

6th July 2005, 10:16 PM	#8
curva diyAudio Member Join Date: Dec 2004 Location: the web	the way I see it these chips can be used only for a subwooooooooo woooo wooooo woooooo

6th July 2005, 10:42 PM	#9
agent.5 diyAudio Member Join Date: Aug 2003 Location: San Francisco, CA	I need a bit more than 170W though. Will your design allow us to parallel more chips for more power?

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