A75 Monoblocks

[Peter Daniel]

A75 Monoblocks for sale. Separate transformer and regulated PS for input stage (no voltage doubler). Quality components. Base made from 1/2" aluminium, front and back 1/4" aluminium, anodized black. Those are really great sounding amps. $1,500 barely covers the parts cost.

 

[tiroth]

Nice work on the boxes.

 

[fcel]

beautiful!

 

[BrianGT]

Very clean and professional! I am suprised you want to get rid of them after all of the time that you put into them. If I put that much time into a pair of amps, I certainly could not just go and sell them.

--
Brian
gte619j@prism.gatech.edu

 

[Peter Daniel]

Those are best sounding amps I've heard so far. I have another 2 pairs of A75' with better chassis which I'm using as my reference. Since I started the building process of SOZ and Aleph2 and 5 monoblocks I'm just making room for them.

 

[BrianGT]

Do you have any pictures of your better looking chassis designs for your 2 other pairs? I am curious what they look like.

What are you doing for your Aleph chassis?

--
Brian
gte619j@prism.gatech.edu

 

[Peter Daniel]

Since you asked:

 

[Peter Daniel]

And that's the outside view. One amp running mids and tweeter, the other base.

 

[Peter Daniel]

Another view:

 

[Variac]

HPotter you are a maniac

I mean that in the best possible way of course

Wot a system- I'm inspired

 

[fcel]

HPotter: Is that a hole I'm looking at ..... on that beautiful floor ......... to route the power cords and interconnect? You must have a very good reason to do that!? No offense.

 

[Peter Daniel]

I run dedicated 30 A lines to both monoblocks and running thick wires on the floor would be inconvenient. I decided to run them in the basement so the hole had to be made. BTW I installed the floor myself so the damage wasn't that important.

 

[JoeBob]

Nice... You really went all out on them...

 

[Peter Daniel]

The speakers are open baffle using Focal Audiom 12" and 15" woofers, Triangle midranges and Raven R1 ribbons. I made many speakers before but those are absolutely best sounding. I wouldn't make closed box enclosure again. The base is so natural and deep and there is so much detail to be heard. Midranges don't use crossover on the bottom, they go down naturally at around 80 Hz. I use active crossover on the woofer (based on Threshold crossover).

 

[fcel]

.... and you have "finalized" the placement of the speakers........ to drill the hole at that particular location? Location of speakers ain't going to change for a long long time, I suppose?

 

[Peter Daniel]

They've been standing in that particular spot since 1996.

 

[Peter Daniel]

Anyone interested in more pictures of my current A75 can see them in Pass DIY Gallery:
http://passdiy.com/gallery/a75-p7.htm

Peter

 

[fcel]

Peter: Saw your pictures in Passdiy. I have to ask ..... what do you do for a living? Nothing to do with audio, right? The stuff you built looks better than commercial products!

 

[Peter Daniel]

That is probably because I don't do it for living.

 

[guyv]

Triangle midranges

Peter,
I am wondering which Triangle drivers you use in your impressive speakers. I have a pair of Triangle 13cm and a pair of 16cm. I will try to match one pair with Magnepan 40" true ribbons as soon as I receive my electronic xover. I am wondering if the T13 or the T16 will be best. Are the Triangles used with an open baffle as well?

I will use my REL subwoofer for bass. The T16, TZ200 triangle tweeter and REL Storm subwoofer made a wonderful combo with true to life pipe organ realism. I just built two Tripath amps that will enable me to bi-amp.

Guy