N-Channel mosfet amplifier schematic needed

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#482
Hi all

I have been waiting for some special 7 pole plugs for the ZETA, to be able to complete the modules.

7 poles:

V+
GND
V-
Speaker GND
Speaker OUT
Input GND
Inut Signal

Will post soon, also the new revised ZETA project is being placed at a separate website with general audio related projects. URL will be posted here very soon. Content is being built right now.

🙂
 
#484
Rajeev: Since ZETA is a 'non commercial / non product' project, i think it belongs better on a 'non product' driven site. So my plan is to make a purely non commercial site for this kind of projects. We have also a few other non product items on lcaudio.com, like the subwoofer preamp, and that one will also find place on the new site, since it also is not a product of my company.

🙂
 
#486
Hi Lars,

Lars Clausen said:
Rajeev: Since ZETA is a 'non commercial / non product' project, i think it belongs better on a 'non product' driven site. So my plan is to make a purely non commercial site for this kind of projects. We have also a few other non product items on lcaudio.com, like the subwoofer preamp, and that one will also find place on the new site, since it also is not a product of my company.

🙂
Click to expand...


welcome back! 😉

I'm very happy that you're well (!) and that the Zeta has not been abandoned.

My board design has reached the first testing stage, 100x30mm for one MOSFET pair or 160x30mm for four MOSFET pairs (fits on 75mm or 80mm heatsink 'tunnels' and thus inside 2U rack cases), expandable to any number of MOSFETS, at least in theory 😉, but no prototype has been built yet. I hope that - with a new LC DIY site - discussions will be going on. 😀

Sebastian.
 
#487
Dear Lars ,
Can the ZAPpulse 2.3SE modules be bridged to get more output , most pro sound drivers are 8 ohms 500 w , hence the useful requirement is 1000w at 4ohms and 2000w at 2 ohms , I also hope that their costs will come down at affordable prices for DIYers in a years time .
 
#489
hello paaji

rajeev luthra said:
Where can I see the SOA graph of IRFP250 mosfets
Click to expand...


here is the soa curve of IRFP250N
 

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#491
I just recently received new N channel amps from Mr. Lars.
ZETA 320. I am blown away. These amps are so gooooood. My strong recommendation,
to anyone that is thinking about building it. Not just that they sound good, but boards are so cool and small with beautiful SMD blue led. I have a single pair of IRF 250 on them, and I just cannot stop listening. I am running them with 2x 65V 500VA on each channel and they are singing!!!
🙂 🙂 🙂 🙂 🙂 🙂 🙂 🙂 🙂 🙂 🙂
 
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