viral projects, sort of

[adason]

I put those cute VU meters in the case, love the vintage look, reminds me old revox stuff.

 

[adason]

That ugly box below the vu meters is my c5200/a1943 buffer. Decided to put it in the box, since it sounds wonderful. Its only one pair of outputs only biased moderately based on small heatsink, but i decided to finish it for now. I am building next generation with three pairs of c5200/a1943, each pair biased at 0.5A, driven by another pair of c5200/a1943. Waiting for heatsink.

 

[Vunce]

Aleph J got its case...pumpkin halloween filament 3d printed.

Pretty cool Adason!
Are those 300mm x 165mm HS?

 

[adason]

Yes, 4u 300

 

[joensd]

my c5200/a1943 buffer. Decided to put it in the box, since it sounds wonderful.

Good to know. Exploring buffers and low gain amps at the moment and thought about the cool/hot follower from Andrea Ciuffoli.
Decided for Nelson´s simple follower as a start though which I still haven´t fired up (active setup, amp is for compression driver).
Made a couple layouts for these amps but will eventually just stick with P2P wiring as it is simple enough to do.

Beautiful thread with many cool projects BTW! A joy to read and watch. Blog-style!

 

[adason]

Thanks. If you want prefessional buffer, build F4. Its amazing.

 

[adason]

Adason buffer, three pairs of c5200/a1943, driven by c5200/a1943. Working on the case, circuit finished. Has been sounding great.

 

[joensd]

Has been sounding great.

With a preamp I suppose? Which one?

 

[adason]

Not yet, just from sony cd player. With tube pre in the future.

 

[rsavas]

I saw you using those old philips mid-range speakers in a early thread. I used them years ago they blew up. I replaced with morel mtm55 and they solved my problems. They get crossovered at 700Hz, with a 15” in a sealed box and a morel tweeter at 3k

 

[adason]

I do not listen too loud. Philips were much cheaper than morel. I usually cross mid domes at 900Hz. Perhaps 700Hz would load them too much.
But as long as it works for you and you like the sound, that's all that matters.
Cheers.

 

[adason]

Perhaps going from 15" directly to 2" dome is not the best idea. I use midbass in between.
Nothing is blowing up.

 

[adason]

Finished my big c5200/a1943 buffer into box with top and bottom. Tested in main system, compared with F4, i prefered my buffer, much deeper soundstage. But both great, of course sound is dominated by preamp.

 

[adason]

Finished previously optimized two srpp tube pre into final boxes, adason style, foam board. Needs few more coats.
One with 6n1p, one with 6n2p. Each has slightly different sound.

 

[adason]

Previously finished ACP+ and Whammy are now neatly in the aluminium boxes. Both work great.

 

[adason]

Still working on simple active crossover, even if i already have enough, just had one etched board left.
And this concludes the covid thread. I hope its over. FLW?

 

[von Ah]

Good projects, adason.

Where did you get those blue boxes? They look great with the white trim—did you print those?

 

[adason]

Amazon

 

[adason]

Those boxes are little light for heavy projects, but ok for headphone amps.
I will replace knobs with 3d printed chicken head. Looks better to me.

 

[adason]

Still working on three new buffers based on various bjt's.
At the end i will have plethora of buffers according to ZM.
In the mean time i put tube vu meter in the box (still needs one more coat of paint).
Fun to watch, especially in the dark.