High-Power Electrocompaniet clone

hollow_man · 13th November 2010, 03:10 PM

After having cloned the Electrocompaniet AW120 albeit in a lower power variant (attached picture), I will now be attempting to clone a higher-power EC amp. If anyone has such an EC schematic...

hollow_man · 14th November 2010, 05:12 AM

My effort so far.

PhaseLockLoopy · 07:31 AM

Hi Hollowman

Looks very neat -- Just a point on construction - It may benefit to have the incoming power to take the shortest possible journey -- it looks like the cord travels all the way around the box. Otherwise it could be more opportunity for interference to inject into the signal paths, creating that little background bzzzzz nobody likes..

Does the model number suggest the power? 120Watt?

Have you tested it's performance? It's nicely laid out. I suppose one could configure it in conventional dual mono with two transformers as the separate power supplies exist -- but I realise this hikes the cost up

Also it looks like most of the items in contact with the heatsink are TO220 style
is this correct?

Thermal management is improved if the surface of the heatsink is used to better effect - efficient use of the flat area of "real-estate" that can be used to distribute the thermal load. - rather than grouping all the components together in one corner.

Nice practical looking design that could be made modular so that it could be constructed into a 5x or 7x amplifier variant for THX, DTS and DOLBY surround fairly easily

hollow_man · 14th November 2010, 09:51 AM

Any pictures of the internals maybe from an AW250 (or similar)?
Thanks.

hollow_man · 15th November 2010, 06:19 PM

Don't rush, there's room for all!
I will be continuing with my new project, to clone a AW250 or AW400, the aim being to make electrocompaniet engineers blush on sighting!

homemodder · 16th November 2010, 01:13 PM

Hollow, sorry Im away from home and terribly busy at the moment, I will get a friend of mine to visit my home PC and email me a copy of the schematic which I will then send to you.

hollow_man · 18th November 2010, 05:12 AM

Thanks very much homemodder, that'd be a lot of help!

hollow_man · 27th November 2010, 09:04 PM

Main board getting toward completion, Homemodder I would be indebted if you could mail me that schematic

.

Sorscha · 30th December 2010, 08:22 PM

Hello Hollow_man,
Is it an idea, since you "copy" the more modern versions, to create the never produced
"Perfect Two-Channel" ? That would be a challenge

Without cascode-follower: roughly 35Watts(8ohm), regulated and separated power supplies, different transistors.
We are 35 years after date, there are transistors out since then that could do the job done the right way

I still want to do it as I have it almost complete on drawing. ..
the original drawings I mean (!) It does run hot

hollow_man · 06:51 PM

Hello Sorscha,
I am not attempting to clone the 'the two channel amplifier'. My clone is based on quite late electro designs, it does not use cascoded stages, nor does it use outdated output transistors.
If you read my earlier posts again you you will see that I have already cloned an AW120-ish, circa 2002, and I am now attempting to expand this to 250-400Watts. But it's been f***ing hard work so far and nobody bothered to help with the EC schematics.

14th November 2010, 07:24 AM	#3
PhaseLockLoopy diyAudio Member Join Date: May 2008 Location: On a mushroom	Hi Hollowman Looks very neat -- Just a point on construction - It may benefit to have the incoming power to take the shortest possible journey -- it looks like the cord travels all the way around the box. Otherwise it could be more opportunity for interference to inject into the signal paths, creating that little background bzzzzz nobody likes.. Does the model number suggest the power? 120Watt? Have you tested it's performance? It's nicely laid out. I suppose one could configure it in conventional dual mono with two transformers as the separate power supplies exist -- but I realise this hikes the cost up Also it looks like most of the items in contact with the heatsink are TO220 style is this correct? Thermal management is improved if the surface of the heatsink is used to better effect - efficient use of the flat area of "real-estate" that can be used to distribute the thermal load. - rather than grouping all the components together in one corner. Nice practical looking design that could be made modular so that it could be constructed into a 5x or 7x amplifier variant for THX, DTS and DOLBY surround fairly easily __________________ Hum likes to have a nice "Noise to Signal" ratio To "Hum" is to be noticed Quality hum is when it pours out of Electrostatic speakers Last edited by PhaseLockLoopy; 14th November 2010 at 07:31 AM. Reason: because I cant goddam spell.....ok? ;)

14th November 2010, 09:51 AM	#4
hollow_man diyAudio Member Join Date: Nov 2004 Location: Athens	Any pictures of the internals maybe from an AW250 (or similar)? Thanks. __________________ 'in acts and works bigger than a great wale's tail'

15th November 2010, 06:19 PM	#5
hollow_man diyAudio Member Join Date: Nov 2004 Location: Athens	Don't rush, there's room for all! I will be continuing with my new project, to clone a AW250 or AW400, the aim being to make electrocompaniet engineers blush on sighting! __________________ 'in acts and works bigger than a great wale's tail'

18th November 2010, 05:12 AM	#7
hollow_man diyAudio Member Join Date: Nov 2004 Location: Athens	Thanks very much homemodder, that'd be a lot of help! __________________ 'in acts and works bigger than a great wale's tail'

3rd January 2011, 06:49 PM	#10
hollow_man diyAudio Member Join Date: Nov 2004 Location: Athens	Hello Sorscha, I am not attempting to clone the 'the two channel amplifier'. My clone is based on quite late electro designs, it does not use cascoded stages, nor does it use outdated output transistors. If you read my earlier posts again you you will see that I have already cloned an AW120-ish, circa 2002, and I am now attempting to expand this to 250-400Watts. But it's been f**ing hard work so far and nobody bothered to help with the EC schematics. __________________ 'in acts and works bigger than a great wale's tail' Last edited by hollow_man; 3rd January 2011 at 06:51 PM.*


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16th November 2010, 01:13 PM	#6
homemodder diyAudio Member Join Date: May 2006	Hollow, sorry Im away from home and terribly busy at the moment, I will get a friend of mine to visit my home PC and email me a copy of the schematic which I will then send to you.

30th December 2010, 08:22 PM	#9
Sorscha diyAudio Member Join Date: May 2009 Location: Hoofddorp	Hello Hollow_man, Is it an idea, since you "copy" the more modern versions, to create the never produced "Perfect Two-Channel" ? That would be a challenge Without cascode-follower: roughly 35Watts(8ohm), regulated and separated power supplies, different transistors. We are 35 years after date, there are transistors out since then that could do the job done the right way I still want to do it as I have it almost complete on drawing. .. the original drawings I mean (!) It does run hot

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