Old Aleph 1.2's

[uli]

Impressed

Hi Nick,
I`m VERY impressed!
How do you manage the WAF?

Uli

 

[cHoc]

Re: Impressed

Hi Nick,
I`m VERY impressed!
How do you manage the WAF?

Uli

well, according to the dust on the turntable, he might say; what WAF?? ....

but anyway, very nice work

 

[Nickolas K.]

Here are some replies:

moe29
Fans are Papst 4184 NXH (24 VDC) operated @ 8 VDC. Noise is kept at a minimum while junction temp is abt 50 degrees. Note that I'm using 10 output devices, instead of 12, biased @ >400 mA each.

Mad_K:
Must be >6000, I stopped counting long ago.

jewilson:
Even with high performance heatsinks like the Fischer LA1-10A (approx. 0.2 K/W), it is practically impossible to run both channels of Aleph 1.2 in one chassis.
Transformers are 2.5 KW - 55 A each (45-0-45) and bridge rectifiers are IXYS VBO 50-16 NO7.

Uli:
I've been married for 17 years and WAF was never a problem. I have my own "playroom" in the basement and you know what they say, "the bigger the boys the bigger the toys".

dhfreakie:
Platter surface and arm bearing are always clean, the rest doesn't matter.


Thank you all for your comments,
Nick

 

[Peter Daniel]

What's the other amp in a picture?

This is definitely one impressive system. I like the open architecture of the amp. What preamp are you using, active crossover for subs?

 

[Netlist]

I'm breathless...

/Hugo

 

[moe29]

i think everyone would agree with me that this Aleph 1.2 should
be in the Pass DIY Gallery.

 

[Nickolas K.]

Peter Daniel

The other amp is an ML3 clone I built abt 10 years ago and it is used to drive the LF tower.

Preamp is Aleph LOno (Ono + Aleph L) which I built abt 1 year ago.
There is also an extra Ono which I use with the second TT.

Active crossover is tubed 2-way (LP=18db/oct, HP=6db/oct, both xover points variable between 60 and 120 Hz, and LP gain variable between 0db and -12db).

 

[DSummer]

Impressive DIY system! Lots of satisfaction, not money can buy!
Can you show us your tube crossover with circuit, I believe most of us are interested.

 

[dggs]

You are so lucky to have your own "playroom", but may I ask why are you having marble(tile?) for the floor? Very impressed with the time and resources you put in for the system and music collections. It'll be perfect if the room can be more acoustic friendly.

 

[moe29]

in his last picture i can see the very tip of an area rug...

so it looks like Nick's covered

 

[Nickolas K.]

dggs

Marble is solid and doesn't resonate.
It's also more expensive.

moe29 is right, I'm covered.

 

[dggs]

Ah! Perfect.
I knew a music lover like you wouldn't miss anything critical to the sound. Thanks for sharing the view of the rest of the room.