Yes of course...I would not advertise a preview of just some smoke.
To be honest, I did make a small mistake in my wiring of the transistors in one module
But that was just inattention of me. I was fast enough to put that right.
What happened when I turned the switch on ?
Nothing. Except for 2 green LED bulbs lighting up on the amp modules.
This was OK. But no sound except for just one soft "click/plop" coming out of the speakers …
I reached over to touch some keys on the keyboard and guess what ?
An F Sharp diminished or something like that … full sounding with a nice body…
I was surprised first ...and then extatic.
With a volume level at about 2 on a scale of 10 (in fact there are no figures on my volume-pot. Just an estimation).
EDIT feb 1th: there ARE figures on the volume scale. They are just small ... and I need glasses...
This speaks for itself already, doesn't it ?
No more hiss or hum at a this relatively low volume level.
This is a major difference. Turning the volume up makes the next difference: it can go incredibly loud.
No comparison with my former original amp modules.
Without amp-distortion.
What happens over level 5 (half of the volume-pot reach) is real overkill in my room.
At level 6 my son’s drum set is easily overruled.
To be honest, at a level above 5, a lot of things start rattling.
EDIT feb 1th: above level 6... but the speakers keep performing well.
This is resonance of both the instrument (especially the suitcase cabinet and components) and all kinds of things in the room.
Clean sound from the amp up to high volumes, that’s new to me.
Much cleaner and transparent than the old modules.
I had to readjust volume in the high pickups.
They sounded too hard and sharp.
But then, for the rest of the keyboard, sound is nicely balanced .
The brightness and bass tuner-pots of my pre-amp seem to react more gradual and smooth in combination with these modules.
Is it more brilliant and clear ? Definately yes.
Is it “high-fidelity” transparent ? No.
Not yet ?
I plugged my CD-player directly into the suitcase-input, and this does not generate a real hi-fi sound neither.
OK, these are 12 inch guitar speakers. We can not expect Wilson-audio sound of it.
But my Silverface Twin Reverb seem to go way beyond that in terms of transparancy.
So I wonder if I chose right in buying the (vintage) Jensen CH/Mod 12-50 speakers recently.
They were definately an upgrade to my old worn-out Eminence Alnico's.
I tested two kinds of Jensen speakers (the CH/MOD and the C12N)
View my other post
http://ep-forum.com/smf/index.php?topic=9275.0With the old amp modules it didn't make that much of an difference.
That's why I chose the cheaper and lighter MOD's.
The C12N's had brighter mid's . But not all that much difference on the old modules.
On these modules it surely would have made the difference...
I am convinced that a combination of these amp modules with other speakers can raise the suitcase to a new level.
So, I will do some experimenting on speakers soon.
It’s a huge upgrade already.
It's is nice sounding. Full-body. Full control.
The dynamics are fantastic.
Such a pleasure to play the suitcase now.
I mounted them back into in the cabinet again.
As the heat-sinks are a bit deeper and shorter I mounted them on small L-profile brackets.
I will shorten the wires soon. and solder them instead of the temporary connectors.
By the way, the amp – modules stay cool.
Even when playing very loud for some time, the sinks just get “hand-warm”.
I think this design is very mature.
Way better, more safe, operational and reliable than the original, that is for sure.
What did I pay for the modules ? I payed about 150 EURO for both modules.
But as far as I understand, this price could be temporary as it is still a kind of Beta – testing.
It didn't cost me more than having both my old Peterson Modules repaired by an amp tech.
And it was way cheaper than the alternative on the market.
(I haven’t tested these, so I can’t judge them… )
But to my opinion, these amp modules a high-end design.
It is a new circuit that deals with some problems of the old design and uses evolved insight and technology in an effective, musical and functional way.
It is ready to be commercialised. I am sure it will make a lot of suitcase-owners happy.
The only thing Mike should work on ... is a simple installation manual...for dummies like me
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My modules should take a 4 ohm load but it is not recommended and you will probably destroy your speakers.
tsss.... 
][URL=http://s1328.photobucket.com/user/Erik_Accou/media/SHUTTLE57/Pictures/Compare%20Jensen%20C12N%20vs%20Mod%2012-50_zpsbob1a7oo.jpg.html]