Sibelius a new amp

ColinWonfor

Junior Member
125027698_2460308450938748_3856974362243247091_o.jpg
 

ColinWonfor

Junior Member
It is only 35W/ch @ 8R,70W @ 4R 140W @ 2R
It is being made for the Belgium Market and then later available world wide.
It runs about 20W push pull Class A.
It has RCA and Balance inputs,
It BW is 10Hz - 300KHz
It has a single transformer but twin bridge a each channel will have 100,000uF of caps,

It will made to go with these speaker oh watch the video Harley is good at chat,

Single Driver Speakers | Full Range Loudspeakers | Full Range Speakers for Sale
 

ColinWonfor

Junior Member
PCB now assembled.
PCB PIC.jpg

Top left PCB convert Balance to un-Balance,Top right PCB is the twin bridge PSU with 88,000uF Caps and the 12V supply for the Balance PCB and the ON LED drive. The bottom two PCB's are the power Amp, they will be running 35W P-P Class A.
NOTE:- The balance PCB can have a variable gain control not used in this project.
Running the PCB on +20 and _20VDC will allow with larger heat sink a deeper current and more Class A, also note the DC offset can be adjusted to less than 1mV, max current is 12A continuous and 1mS peak current can be over 100Amps. Then the fuse blows.

Great fun on a lock down day.
 

Thermionics

Post Whore In Training
Site Supporter
It is only 35W/ch @ 8R,70W @ 4R 140W @ 2R
It is being made for the Belgium Market and then later available world wide.
It runs about 20W push pull Class A.
It has RCA and Balance inputs,
It BW is 10Hz - 300KHz
It has a single transformer but twin bridge a each channel will have 100,000uF of caps,

It will made to go with these speaker oh watch the video Harley is good at chat,

Single Driver Speakers | Full Range Loudspeakers | Full Range Speakers for Sale
With a name like Sibelius, I'm surprised it wasn't being made for the Finland Market. :D
 

ColinWonfor

Junior Member
Well it was designed at great time and expense for a Dutch Company who expected to get it on the cheap, but like my normal trusting foolish self I trusted them, oh boy was I wrong and stupid. :think
So the design as been over hauled and improved and is sounding much better than the original. And the great good news is at least with sales I have got my money (retirement fund) back for all the parts and tooling. But sadly no contribution to time/cost or years of experience/ uni, study etc, which still had to be paid for and just think of all the time I missed by studies and not getting stoned like some of the lads I knew.
And all that for the greedy mindless design thieves out there GM, PM, KMc, AR, AR, PF, RK, TW, SL, so called friends. And to go and get awards etc. for no effort in design by them selves just stolen work. And made homeless three times by these non-feeling humans.

So you new designer and creative humans do not bother the morons will steel it anyhow they can. Bitter me never !?*!?* angry yes. 😡
 

thin_ice

Site Supporter
Site Supporter
Did you see this thread Colin? Credit given where credit is due! :) Guessing the Sibelius is even better sounding. :chinKeep on keeping on!:cool:

 

ColinWonfor

Junior Member
Did you see this thread Colin? Credit given where credit is due! :) Guessing the Sibelius is even better sounding. :chinKeep on keeping on!:cool:

I think so but I am very biased I like tight bass no wobble sounds here, and good tinkle on symbols. Fast and deep, then run away.
 
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