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(one more) ALEPH P 1.7 clone

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picture of the P1.7 boards. I made some little heatsinks on the IRF9610 as you can see.
 

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Looks really nice Wim!!

The heatsinks look like a good idea - my 9610's are really quite hot - the 36degC ambient temps probably aren't helping much :hot:

Cobra2, Zei

I definitely think bad caps are the main problem. The bad channel is stable now after 6 hours running, so the at least one output cap was the primary cause. I don't have much confidence in the remaining MKT1813's. I might try to find some panasonic FC's to put in until the bg's arrive.
I guess when I have some decent caps installed I might be in better position to judge noise levels.

Zei your shoebox install looks positively high end compared to my scattered around on a sheet of mdf setup :0 I'll take some pics when things look a bit more organised.

All I can say is : at least it wasn't cooked mosfets!!

cheers
Paul
 
Zei your shoebox install looks positively high end compared to my scattered around on a sheet of mdf setup :0 I'll take some pics when things look a bit more organised.
😀 😀

I,m going to take the time asap to give my Alpeh a better looking home..

I,m just very curious on those relvolumes...........

maybe i just leave some space in the chassi for some volume "upgrades"

How are you guys switching inputs? with buttons or a switch?
How any of you thought about remote controlled options?

/Z
 
Along with the RelVol3 I've ordered Input2 and Control2 boards from dantimax. From Wim's pix it looks like he has gone the same route. Mine haven't arrived yet so I can't tell much more than replay the hype on the dantimax site 😉

You can see the Input2 clearly in Wim's pics - this is a relay select input board, with on board mute relays and board mounted XLR's/RCA.

I'm planning on rotary encoders for input select and volume... The control2 board just needs an IR receiver (which is integrated with the C2Panel options) to allow full remote control. 😎 😎

cheers
Paul
 
Volume and switching between inputs goes with encoders in my situation. So there are no switches on the front, only 2 encoders (Connected to the Contro2 board). Thats all.

The LCD display gives information about theactual channel and the volume level.

I am not going for the IR remote, so i do not even connect the little IR detector board. I leave it out.
 
Hi Guys!
Is the apox or dantimax qeuit, you don't hear any switching noise?
I hear some on my stepped attenuator stepping up the volume, not directly but changing the clicks, it gives some pops, so I,m thinking of getting also a APOX or dantimax.
I will take a look at your place Marcel, when I get my xonoparts and you get my xono boards. And Wim you're p1.7 looks good! Mojo with getting it together. I also did only the heatsinks on the 9610's, they did get really hot. The 610's didn't. I hope its enough. GRTZ Teake
 
Bourns backwards?

I have what looks like an early version of Veteran's boards (with the mounting holes on the input side very close to the 1000uF caps) and I wasn't getting any change in gain by adjusting the 2k pot.

What I found was that the pot - P1 (Bourns 3296 2K multi-turn - 3296W-202LF-ND digikey #) needed to be installed backwards compared to the trimmer screw location on the board

The original way I installed it, it was shorting out the pins and provided no resistance - I've reinstalled it and confirm the resistance is adjustable now on the solder tabs, but I haven't had a chance to listen to it yet since taking it apart.

Just thought I would share that if anyone is having no effect from their trimmers as well.
 
I have another set of boards of the P1.7, with all components on it, and i want to adjst the volume with a 4-deck pot or something like that.

I only do not have sourses were to buy these things for a reasonable price.

Do anyone know were to buy 4-deks pots or another good solution for XLR volume regulating?
 
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