I like the way the knob sits higher up on the front of the case like that.
Did you do that on purpose or? :veryevil:
You obviously have no idea how much planning went into that little detail Seriously, I don't think it matters because it makes it easier to position the amp the right side up
On the Couch: Teac PD-H300 -> NONOZ III DAC -> PPA/Millet Hybrid -> K501/SR325
On the Desk: iBook G4 12" -> META42 w/ AD8620 -> HD330/B&O Form2
On the Move: iPod Nano 8GB -> EX70/ER-6
In progress: M3, Zen, JLH and a new DAC (and more...)
Now, if only we had pads so we could board mount 1/8" I/O jacks.....tangent? :evil:
Thanks thrice IMO, board-mounted jacks are good right up until you have to fit the pcb in the case, then it is an absolute PITA, because you have to drill everything absolutely perfect
On the Couch: Teac PD-H300 -> NONOZ III DAC -> PPA/Millet Hybrid -> K501/SR325
On the Desk: iBook G4 12" -> META42 w/ AD8620 -> HD330/B&O Form2
On the Move: iPod Nano 8GB -> EX70/ER-6
In progress: M3, Zen, JLH and a new DAC (and more...)
Headphoneus Supremus Member of the Trade: Rockhopper Audio
Originally Posted by Nisbeth
Thanks thrice IMO, board-mounted jacks are good right up until you have to fit the pcb in the case, then it is an absolute PITA, because you have to drill everything absolutely perfect
/U.
Yeah that's true, plus there really isn't any room on the PCB for them (or at least it would be awkward to try to put them there).
I like the SM diodes...I too order from LSDiodes...Robots will kill you!
Contributor Headphoneus Supremus: Top Mall-Fi poster. The "T" in META42. Member of the Trade
Have you seen page 8?
No, I haven't been watching this thread at all. Just thought I'd drop my beauty shot in here.
What op-amps did you choose?
Ye olde 8610/20. I've said it before and I'll say it again: this is nearly the ideal battery-powered op-amp. Works fine on 9V, reasonable quiescent current, good bass, low distortion.... Its main flaw is its brightness, but the BUF634 tames that.
single silver sequin to the top of the LED
Great idea! Aside from being less obtrusive than the dime, it will be closer to the light source, so smaller is okay. It might also be interesting to leave the center hole of the sequin unblocked in order to get a small dot of light on top.
You could test it with some (kids) glue stick, or even chap stick.
I'll use what I did on the dime: rubber cement. It's sticky enough to hold long-term, but you can still pull it apart later.
use an SMD-LED instead....A 0805 fits beautifully across the existing LED pads
Interesting! Only thing keeping me from trying it is that I bought a bunch of these T-1-3/4 white LEDs back when we added a centered LED to the META42. The amp I just built is close to the ideal we had in mind when we made that feature in the first place.
My take on the Pimeta-in-translucent-H65
Nice amp, Nisbeth!
the addition of the alps switched pot lends a much more polished feel to the amp when you the Serpac case
Yeah, toggles aren't the most beauteous things in the world. And, having one less hole to drill really helps with the time. You still have to run two wires with PIMETA v1.1 though.
it makes it easier to position the amp the right side up
The asymmetry of my front panel takes care of that for me, too, in a different way. I put the input jack on the right side of my case because this amp will be going into a Headroom Mini bag along with the iPod, and I'll be using a right angle end on the amp side of the cable.
if only we had pads so we could board mount 1/8" I/O jacks
As Nisbeth indicated, the rule in my amps is only one board-mounted panel component, and the natural choice is the pot, as it has the most pins. To add more would pretty much demand custom cases, and at that point I might as well start selling kits or making assembled amps, neither of which appeals to me. I'm just a DIYer, here trying to make more DIYers.
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"Give a man a fish and he eats for a day. Teach a man to fish and he knows what tackle to buy."
It's one of the few I've seen to use the expensive ($3.69) CUI Stack jack (Digi-Key CP-43502PM).
That looks very nice, I'd like to use them. Can't find information anywhere on the contacts, are they silver? I had the impression silver and gold matched different usage patterns, but that either was vastly superior to neither. I've had contact-induced distortion on my CMoy, solved by replacing interconnect, so I'm not just being fussy...
Originally Posted by tangent
Lovin' my new iPod Photo 60GB, too! This little dude thumps!
It took me several tries to find a line out that sounded better than headphone out at 85% volume, be patient if you go down this road.
Contributor Headphoneus Supremus: Top Mall-Fi poster. The "T" in META42. Member of the Trade
Can't find information anywhere on the contacts, are they silver?
In all likelihood, they're nickel. The thing that makes these jacks nicer than average is just build quality. One gets the impression when inserting the plug than the contacts' springiness won't weaken as much over time. But, the DIY community here has only known about them for a fairly short time, so we don't really know how well they'll hold up over the long term.
I had the impression silver and gold matched different usage patterns
Gold is a soft metal, so it really isn't the right thing for this sort of jack. If you were going to plug it in and leave it that way, you'd have a good argument that gold is better than silver or nickel, but that's not how people use phone style jacks. Gold's real advantage is one of perception: it's common to see phone jacks with a gold flash ring around the nose, but no gold on the contacts, which you can't see!
Silver is much tougher than gold. Not sure if it's tougher than nickel, but it is much more conductive than nickel. The main disadvantage is corrosion, but there's a lot of friction when inserting a phone plug, and silver oxides aren't very tough to cut through. (Not like aluminum oxide, for instance.)
Nickel is a good workaday material. Very low corrosion, decent conductivity, cheap. 99% of all jacks have nickel contacts.
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"Give a man a fish and he eats for a day. Teach a man to fish and he knows what tackle to buy."
skyskraper grumbles about the incompetent and disinterested local serpac distributor. all we have is a knock off in black but at least its a short drive away and cheap.
edit: because i have to mount the led on the panel.
also edit: for the price you'd hope those jacks would be really good. theyre a fair slice more then other 1/8" jacks and a bit hard for most to justify the expense on. but the solid contacts sound appealing. in oz farnell sell a tube style jack by multicomp for not very much. i think ill pick some up for my personal portable pimeta
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diy ≠ using our knowledge for profit. diy = COMMUNITY.
Seriously, I don't think it matters because it makes it easier to position the amp the right side up 
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