[Shipping] Euro DIY Mid/Side Encoder/Decoder PCB/panel

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I would be interested in:

Through-hole PCB
48
62%
SMT PCB
30
38%
 
Total votes: 78

wrave
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Re: [Shipping] Euro DIY Mid/Side Encoder/Decoder PCB/panel

Post by wrave » Thu Jul 02, 2020 4:57 pm

At my bench today trying to figure out where I went worng... I don't understand how anyone could mess this build up; especially me! I'm usually SO GOOD at this. I've got a v2.01 board. Just desoldered R18 to make absolutely sure, and yes the 1Ks are all next to the op amps in the right places. I had this module hooked up for a while without any op-amps and strangely it seemed to work, even if a little lop-sided. Then i noticed the op-amps still on my desk. Duh. Let's pop those in! Now i've got no sound on any output. If i take the op-amps out i have sound again. what? the? hell? No caps look blown. the electrolytics aren't reversed. i assume the fuses don't blow, but would simply reset themselves as the name "resettable fuse" implies. the op-amps aren't in backwards, nor did i accidentally reach for 4 ICs other than the TI ne5532p's included. I'm about to check every solder joint and hope for the best... umm yeah i've got nothing. No idea why it doesn't work.
🤦🏻‍♂️ I had the front panel on upside down.

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aragorn23
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Re: [Shipping] Euro DIY Mid/Side Encoder/Decoder PCB/panel

Post by aragorn23 » Fri Feb 12, 2021 5:48 am

I'm building a LRMSMSLR now and I don't have any NE5532's. Would TL072/82s be a suitable replacement?

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ratch
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Re:

Post by ratch » Tue Feb 16, 2021 5:31 pm

unrecordings wrote:
Tue Jul 05, 2016 3:50 am
Here's my just finished MOTM format conversion. I built a dual unit since that conveniently fills out 1U

Image
This is awesome. What did you use for brackets to mount the PCBs?

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Stab Frenzy
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Re: [Shipping] Euro DIY Mid/Side Encoder/Decoder PCB/panel

Post by Stab Frenzy » Sat Mar 13, 2021 7:57 pm

aragorn23 wrote:
Fri Feb 12, 2021 5:48 am
I'm building a LRMSMSLR now and I don't have any NE5532's. Would TL072/82s be a suitable replacement?
They should work fine.

πασκαλ
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Re: [Shipping] Euro DIY Mid/Side Encoder/Decoder PCB/panel

Post by πασκαλ » Sun Mar 14, 2021 2:49 pm

Are the schematics still available? The images in the original post seem to have been deleted.

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zenith
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Re: [Shipping] Euro DIY Mid/Side Encoder/Decoder PCB/panel

Post by zenith » Thu Apr 08, 2021 5:41 am

There is a delay of availability for the: 5VDC 22uF SU
Panasonic Aluminum Electrolytic Capacitors - Radial Leaded

Any alternative for this, or should I wait for the restock?

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Re: [Shipping] Euro DIY Mid/Side Encoder/Decoder PCB/panel

Post by pjbulls » Thu Apr 08, 2021 12:02 pm

It's a bulk power supply bypass cap, get whatever in a similar physical footprint with equal or better ratings (look for low ESR and high endurance if you feel like splurging).

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zenith
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Re: [Shipping] Euro DIY Mid/Side Encoder/Decoder PCB/panel

Post by zenith » Thu Apr 08, 2021 12:52 pm

Nice, thanks for the response! Would you recommend any of the following to work (they aren't 5v, but close at 6.3v) without damaging the pcb?

Image
Attachments
capac.PNG

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Stab Frenzy
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Re: [Shipping] Euro DIY Mid/Side Encoder/Decoder PCB/panel

Post by Stab Frenzy » Thu Apr 08, 2021 7:46 pm

zenith wrote:
Thu Apr 08, 2021 5:41 am
There is a delay of availability for the: 5VDC 22uF SU
Panasonic Aluminum Electrolytic Capacitors - Radial Leaded

Any alternative for this, or should I wait for the restock?
I don’t know where you’re getting the idea that that should be 5V, it’s got 12V over it so I’ve generally used 25V or 35V for them. Anything above 20V should be fine, 6.3V definitely isn’t fine.

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zenith
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Re: [Shipping] Euro DIY Mid/Side Encoder/Decoder PCB/panel

Post by zenith » Thu Apr 08, 2021 8:11 pm

Thank you! I must have copied the spec wrong from the mouser list.

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Re: [Shipping] Euro DIY Mid/Side Encoder/Decoder PCB/panel

Post by pjbulls » Fri Apr 09, 2021 2:04 am

Yeah, I didn't comment because it seemed like such an obvious typo, please don't put a 5V cap across a 12V power rail ;)

Looking at the PCB in the OP it seems pretty important that you stick to a minimal height, since otherwise the cap may protrude from the side of the module (this isn't usually an issue with horizontal PCBs). Some good alternatives could be:
  • 80-ESS226M035AE2EA - slightly wider which should be no problem, cheapest (though we're talking about cents), slightly better ratings than original
  • 667-ECE-A1VKA220, 667-ECE-A1HKA220, 667-ECE-A1VKA220I, 667-ECE-A1HKA220I are all similar to the previous one but from the original's series
  • 647-USA1V220MDD, 647-USR1H220MDD, 647-USA1V220MDD1TP bump up the endurance to 2000 hours
But seriously, don't sweat it, as long as you meet the minimum voltage rating, have roughly similar capacitance, and the part physically fits it'll do its job. Bypass capacitors aren't exactly tolerance-critical parts.

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