What’s On the Bench Tonight (OBT)

[xrk971]

I think the commercial version is the Aspen Titan? Hugh can confirm.

@AKSA certainly designed a sweet sounding amp in the Deltic.

Here is the Titan:

https://www.diyaudio.com/community/threads/new-aspen-125w-amplifier-the-titan.380033/

 

[AKSA]

Yep X that is the Titan, the turbo-ed version of your Deltic.....
Hugh

 

[maty tinman]

"turbo-ed version of your Deltic"

This is what confused me because the Deltic offered only 50 watts at 8 Ohms in class AB if I remember correctly.

 

[xrk971]

Turbo-ed is a great word. 🙂

 

[audiostar]

X, you belong to Twitter now known as X.

turbo charge to make more powerful, fast, or exciting.

 

[xrk971]

I was X on DIYA long before Twitter became X. Too bad I didn’t trademark “X”. 🙂

 

[audiostar]

Apple products start with an i. All your products should have the letter X. And maybe one day you will be as famous as the X-Men.

 

[wirewiggler]

I am pretty pleased with the Denafrips Ar-se (streaming module) outputting I2s into my Denafrips Pontus 12th in my Roon inviroment. My pi w/dac hats pale by comparison. The Allo bridge with a Denafrips Iris DDS,into the Schiit Bifrost 2/64 does come as a surprisingly strong second. I look forward to more audio specific streaming modules being offered.
Bill

 

[stretchneck]

We have a couple of new products under development. These are in the power conditioning arena.

Infinity Fuse is a solid state relay programmable fuse with solid state soft start relay for audio products. Think of it as a low impedance fuse and soft start solution in one.

View attachment 1227783

View attachment 1227784

Programmable (hardware - no software or micro controllers) for 1A to 15A and slow or fast blow.

We also have another product called Snub Station Zero that provides DC block for mains, and high performance EMI filtering (Schurter filters on 2 and custom one for soft start enabled one) for up to 3 outlets.

View attachment 1227785

These circuits are all based on real engineering and sound electrical design. No HiFi Phoolery here. 🙂

Interesting - is the infinity fuse the successor to the Swiss Digital Fuse Box?

 

[xrk971]

InfinityFuse is a different product line since it has user programmable trip points, slow and fast blow settings, and incorporates a SSR soft start circuit as well.

 

[xrk971]

A sight to behold five Carver RAM285’s on the bench.

 

[xrk971]

Pocket Diamond Buffer headphone amp first sound - sounds wonderfully powerful and clean.

 

[poseidonsvoice]

X,

Since you are in the DC area, are you going to Capital Audio Fest this weekend?

Best,
Anand.

 

[Kokanee]

Nice work X,
Did you use solder paste and fry pan batch method for the bottom side or individual soldering of each piece?

MM

 

[rdf]

XLR patch cords in rando stuff laying around; a pair each in Gepco XB401 line and Choseal Q150A mic cables. The SMSL D6s arrived so also converted the class d amp back to balanced input from RCA.

 

[xrk971]

Nice work X,
Did you use solder paste and fry pan batch method for the bottom side or individual soldering of each piece?

MM

These were factory assembled for SMT. I only installed the TH parts (totally easy). I think I’ll offer these as fully SMT assembled boards in my shop.

This is what they look like from the factory.

There are 10 TH parts to install:
Volume pot
2x 3.5mm jacks
2x input capacitors (I used Silmic 10uF but 2.2uF Wima box cap works well.
1x 4 pin JST battery connector.
4x electrolytic rail caps (I used 100uF 35v) but 16v ones would be fine.

Factory installed 5532 opamps because OPA1642 was not in stock. Replacing that might improve sound quality a bit (but very subtle effect).

The two SMT LEDs serve to show amp channel is working, plus serves to set the voltage drop for the CCS reference.

 

[xrk971]

X,

Since you are in the DC area, are you going to Capital Audio Fest this weekend?

Best,
Anand.

I am unfortunately tied up with other commitments this weekend and won’t be able to make it.

 

[egellings]

WOBT - May 19, 2021: installing the LU1014D TO247 adapters onto a heatsink and testing thermal performance.

I mounted the heatsinks earlier today. Surplus HP CPU coolers and some M3 drill and tap, thermal paste, it’s looking really good.

Huge heating for the little transistor.

 

[xrk971]

It makes about 15W for the LuFo amp.

 

[xrk971]

The first Carver RAM285 amp delivered to a customer and now out in the wild. Amp is looking and sounding superb.