Pictures of my Aleph 2

[marjan]

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]

Picture of inside

 

[marjan]

picture of back side

good luck all of you

 

[kristijan-k]

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]

Hello Marjan!

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

BR,
Milan

 

[marjan]

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]

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]

Super job Marijan,

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

Enviously,
Rodd Yamashita

 

[marjan]

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]

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

very nice! mark

 

[marjan]

Mark hi!

Realy glad to hear from you. Like I told on the top - thank`s again. Your help was crusiall to me.

Chasis? "With a litle help of my friends" said Joe Coocker.
BTW for all of you without a proper education and expirience in the field of electronic (like me), starting the project like this (or maybe smaller?) it is great learning proces. Do not be afraid to try. It is a great expirience to turn that main switch ON and hear the music.

Mark, that Aleph 5 - stuning.

rgds Marijan

 

[Peter Daniel]

Looking good and solid. How is the top cover plate secured to the amp? I don't see any holes in the bars bolted to heatsinks. Any particular reason for using copper for back and bottom?

 

[fcel]

Chasis? "With a litle help of my friends" said Joe Coocker

Looking real good. That must weigh at least 60 pounds each!
You must have pretty good friends to help you with the chassis building! I wish my friends could do that.

 

[A'af]

Long Live DIY..........................., Warm regards from Indonesia

 

[Jean]

Man that looks really clean! I like the tops, and the rear panel with air vents

 

[Tazzy]

10 Points for style!

 

[trigon]

Exelent job.

Trigon.

 

[Carl Ekblom]

Solid and nice!
Great job!

Regards
Carl

 

[jleaman]

AH hem that does indeed LOOK AWSOME

I wish i had some heat sinks that would work for a aleph 2 : O ( as i want to build one..

O(

J'

 

[fcel]

feet

Since nobody has made a comment about the feet, I would like to make a suggestion. I learn this from HPotter/Peter Daniel. Cut eight 1" length from a 1" diameter broom handle (or aluminium, since yours looks so good) and attach it to the bottom plate of the 2 amps. It works very well.

I'm assuming you're still waiting for the feet to arrive.