#71 Shure 55SH Series II "Elvis mic" teardown & repair

The practical side of this one was performed and documented a couple months back, but since i've had this back-log to work through, the text is only getting written now. But good things come to those who wait, right? Or so i've heard...

Regardless, i couldn't not grab this deal when i saw it. A shure 55SH "Elvis mic", with allegedly low(ered) output, for 75eu shipped (considering it retails around 160-ish). Now, granted, i HAD peeked around the interwebs beforehand, and it seemed that, at least in some cases, the on/off switch could be a suspect. But on the other hand, even IF the capsule itself turned out to be a dud, i could still MacGyver another capsule in there, one way or another (possibly from a Grundig GDSM-202, but shhhhh!...). Aesthetically it was in good shape, so why not?

#70 MOTU Audio Express teardown

This summer's "already" been quite fruitful, gear-scoring-wise anyway. This find cost me a colossal 86eu, with allegedly none of the outputs working. This, in the context of it retailing for a somewhat eye-watering 500eu(!!!) or thereabouts, brand new. On the bright(?) side, it came with the original packaging, manuals still in their plastic bags, as well as a USB and a Firewire cable to boot, both also still factory-packed. So why not?

#69 Focusrite Scarlett 2i4 (2nd gen) teardown & repair

For a little while now, i've been thinking of "upgrading" from my old-but-modded M-Audio Fast Track to use as an in-ear monitor amplifier, and the Scarlett 2i4 caught my eye. The mono/stereo direct-monitor selection, as well as the hardware-switchable pads on the inputs made up just the right feature set, in addition to it being usable as a mobile recording interface. As it happens, just the other week, mere days after having saved an eBay search for 2i4's, an email notification revealed a 2nd gen allegedly-faulty unit being up for sale from Italy. I quickly asked the seller about shipping costs, and ended up sealing the deal for an even 50e. 

#68 Alesis M1 Active Mk2 rehabilitation, part one

Over on the Badcaps.net forums, a thread was started all the way back in 2010, about power supply issues in these arguably "classic" low-cost active studio monitors. It even ended up being stickied just this winter, so it's been quite active and useful. It served as motivation for myself, to take up hunting for faulty ones - not sure if i had gone through three pairs, but at least two pairs i revived and sold off to a couple friends, some 7-8 years ago, and to this day i've yet to hear back about any further issues, so i take that as a good sign. In the mean time, i still contributed with thoughts and advice there, which helped lead to several successes.

Recently, a fellow forum member there got fed up with his failed attempts to revive his pair of monitors, and got himself a pair of new ones. In that context, we struck a deal for the Alesis'es, and a few weeks later, here they are.

#67 Audient iD22 part 2: the repair

 And now, getting back to the issue affecting this unit... As pointed out in the ad, the LT3439 apparently used to have a piddly little heatsink glued on top of it, but it got detached. Now, there's a chicken-and-egg type mystery here - did the heatsink glue fail because the chip overheated in the first place? Or did the chip get fried because the heatsink fell off? Regardless, investigation showed that one of the two switching transistors inside the chip seems to be stuck in a conducting state, despite the transistor itself not being shorted, though. But since it handles all the power for the analog circuitry, it's no shocker (no pun intended) that only the digital ins & outs work. 

#66 Audient iD22 teardown

Despite having hoped to nab an Audient interface for some time now, only quite recently did i manage to get my hands on one. Since i'm a cynical... [ahem] person, after having heard several notable(?) audio engineering channels over on Youtube ranting and raving about these, and the "Audient console preamps", and the "discrete JFET DI" and whatnot, my curiosity was indeed itching to see if and how the reality lives up to all the hype and marketing. 

#65 Focusrite Saffire PRO 40 teardown & repair

Ok, time for some nostalgia. My first "big" interface (as in, not just a little 2in/2out jobbie) was a Saffire PRO 40, that i bought retail, brand new, back in 2011 - spring, if memory serves. I mostly used it as an interface at home, tracked a couple rehearsals with the band i was in at the time, then later it got "demoted" to additional-preamp to a Saffire PRO 26io that i briefly owned, before it got sold off when i got my MOTU 896mk3 Hybrid.

This one i grabbed as faulty off eBay, yet again. Another one of those "too cheap to pass up" sort of deals. The listing contained a confession that the seller had (unsuccessfully) attempted to replace the Firewire chip, and he also provided a photo of the affected area. I won't lie, it kinda hurt a tiny bit to see a couple of torn off pads, and a few others lifted and mangled, but at the same time, it also didn't look to be entirely beyond hope. I figured with some determination and a bunch of patience (for "cosmetic / reconstructive surgery"), it could be returned to full functioning.

#64 Vocaltone D7 microphone (Shure SM57 clone) teardown & measurements

Literally last week, a local friend gave me a heads-up on a ridiculous sale that a big electronics retailer nearby was having, on some knockoff Shure microphone clones (of the SM57 and SM58, specifically) - normal price 39,90e; discounted price 10e(!!!). I grabbed three, right off the bat, with the intent of borrowing a legit SM57 and doing some measurements. But then i figured, why not make an article out of it?

But i've got big(?) plans for these, more or less. There's method to this madness, though...

#63 M-Audio M-Track 2x2M C-series teardown & repair

Boy, that's a lot of M's up there... But yeah, here's another eBay score, bought as faulty. Basically, because it was too cheap to pass up, even if it's unrepairable - a paltry 30eu. The ad said it will no longer power up, save for the phantom-power indicator LED, and won't be detected by a computer. But before troubleshooting, it warrants a thorough inspection, inside and out, wouldn't you say?

#62 Jamo Sub 200 modding

For background / context: https://mehlau.net/audio/multisub_geddes/

I had been off-and-on "hunting" for a twin, for my Jamo Sub 200 that i bought and revived years ago. Partially for SPL reasons, partially for the multi-sub approach mentioned above, and most recently, for actually sitting my couch on top of the subs.

At long last, a couple months back i finally found one locally, and in matching black finish. And with the 5.1 Jamo speakers it came in a set with, to boot! Those might get reused / repurposed later, (i'm thinking, in a manner similar to one of my previous projects).