Pictures of my Aleph 2

marjan · 29th July 2002, 11:51 AM

Hi everibody!

I`m hapy today. Finished my aleph 2 monos. Thanks N.P. MarkFinis, Wayn S. and GRollins. Specialy Mark for beeng ease on me and my never ending questions. Amps works exelent. All values in limits. Bias 2.7 - 2.8A. Hot but not criticaly to 65°C. (BTW - my input fets (to-220 heatsiks) including Q1A5 are extremly hot - cant touch - Voltage over Zener folow.Q3 is 9,5 (9V nominal) voltage on the source of dif.input pair litle low(3.5V) -NORMAL?).Picture of front: Sory about pour quality!
rgds Marjan

marjan · 29th July 2002, 11:54 AM

Picture of inside

marjan · 29th July 2002, 11:58 AM

picture of back side

good luck all of you

kristijan-k · 29th July 2002, 12:12 PM

Hello,

I like your design. Very clear.

Will you engrave the front plate, like mefinnis?
What are you using for top cover of your enclosures ?

Regards,
Kristijan Kljucaric
http://web.vip.hr/pcb-design.vip

mpopovics · 29th July 2002, 12:21 PM

Hello Marjan!

Very nice design.
Are you use the original PS capacitance?
Which heatsink are you use? (model)

BR,
Milan

marjan · 29th July 2002, 12:29 PM

Hi Kristjan!

I`m glad you like it. General data about chasis.
Front plate 10mm balck anodized AL, cover plate same as front, heat sinks 200x300mm per side 40mm fins on 10mm base plate from MALI ELEKTRONIKA in Slovenija, bothom and back - 2mm cooper plate painted black, toroid coverd front and top sided with cooper plate. Dim. 300x300x220mm weight 25kg/piec.

rgds Marijan

marjan · 29th July 2002, 12:40 PM

Milan Hi!

132 000uF per chanal. Samxon from China. Standard quality low price. I`m aware that I`ll have to change them in a fev years, but I wanted to be shure first that I`ll be able to implement N.P. desigen properly. Allways time for tuning.

rgds Marijan

roddyama · 29th July 2002, 12:42 PM

Super job Marijan,

You should be very proud. Do they sound as good as they look?

Enviously,
Rodd Yamashita

marjan · 29th July 2002, 12:53 PM

Hi Rodd!

If I say that I`m enjojying everi note coming from my Manepan`s fided bay the amps, and asuming that sound will get improuved by time (only 20 ours till now) I said all. But if I try to submit - bass tight fast and dynamic going so low as Planars alowing, mids are cristaly clear and (not just a phrase) full of ambient details, higs open but newer anoing. You shoud heer the brass section on Hose Alberto CD. Pure salsa. Stage is width, deep and high compared iven with HQ tube gear. Beautiful. There is no field in frequency scale coming out. Linear and natural.

rgds Marijan

mefinnis · 29th July 2002, 01:00 PM

Somewhere in the past there was a thread expressing disappointment at not being able to find "quality" cases ......... ahem

very nice! mark

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29th July 2002, 12:12 PM	#4
kristijan-k diyAudio Member Join Date: Mar 2002 Location: CROATIA	Hello, I like your design. Very clear. Will you engrave the front plate, like mefinnis? What are you using for top cover of your enclosures ? Regards, Kristijan Kljucaric http://web.vip.hr/pcb-design.vip

29th July 2002, 12:21 PM	#5
mpopovics diyAudio Member Join Date: Apr 2002 Location: Hungary	Hello Marjan! Very nice design. Are you use the original PS capacitance? Which heatsink are you use? (model) BR, Milan

29th July 2002, 12:29 PM	#6
marjan diyAudio Member Join Date: Jul 2002 Location: slovenija	Hi Kristjan! I`m glad you like it. General data about chasis. Front plate 10mm balck anodized AL, cover plate same as front, heat sinks 200x300mm per side 40mm fins on 10mm base plate from MALI ELEKTRONIKA in Slovenija, bothom and back - 2mm cooper plate painted black, toroid coverd front and top sided with cooper plate. Dim. 300x300x220mm weight 25kg/piec. rgds Marijan

29th July 2002, 12:40 PM	#7
marjan diyAudio Member Join Date: Jul 2002 Location: slovenija	Milan Hi! 132 000uF per chanal. Samxon from China. Standard quality low price. I`m aware that I`ll have to change them in a fev years, but I wanted to be shure first that I`ll be able to implement N.P. desigen properly. Allways time for tuning. rgds Marijan

29th July 2002, 12:42 PM	#8
roddyama diyAudio Moderator Emeritus Join Date: Jan 2002 Location: Michigan	Super job Marijan, You should be very proud. Do they sound as good as they look? Enviously, Rodd Yamashita

29th July 2002, 12:53 PM	#9
marjan diyAudio Member Join Date: Jul 2002 Location: slovenija	Hi Rodd! If I say that I`m enjojying everi note coming from my Manepan`s fided bay the amps, and asuming that sound will get improuved by time (only 20 ours till now) I said all. But if I try to submit - bass tight fast and dynamic going so low as Planars alowing, mids are cristaly clear and (not just a phrase) full of ambient details, higs open but newer anoing. You shoud heer the brass section on Hose Alberto CD. Pure salsa. Stage is width, deep and high compared iven with HQ tube gear. Beautiful. There is no field in frequency scale coming out. Linear and natural. rgds Marijan

29th July 2002, 01:00 PM	#10
mefinnis diyAudio Member Join Date: Feb 2001 Location: Adelaide, Australia	Somewhere in the past there was a thread expressing disappointment at not being able to find "quality" cases ......... ahem very nice! mark

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