[rshuck]

Well, I received my kit and assembled it today. I hate to say this... but I am upset. I like this amp more with my K701s than the Heed CanAmp. Why must I change my mind? Now I'm going to have to look at more tube amps!

Thanks Tom, it's well worth the price!

 

[sandbasser]

Quote:

Originally Posted by sandbasser /img/forum/go_quote.gif I've noticed a very audible hum in the earphones (Grado SR80 or Denon AH-D950) at low volume levels. The hum goes away completely if I touch the tubes, case or standoff screw. The hum is equally bad with an battery player (Sansa Cube or Fuse) or a powered player (my computer). I'm suspecting some kind of ground fault. Any suggestions would be greatly appreciated. OTOH - it's a little bit cool in a kinda Theremin like way... the hum goes up / down in volume when I pass my hand near the case. Very strange. One more query... will the hum actually damage anything in the amp, phones or player??? Edit: I tried 2 different power adapters - no difference. Right now, I only have one RCA cable - i'm going to try to fab one this weekend, although I doubt it will make a difference. Thanks,

Well, I figured out my mistake... I originally installed 100K resistors instead of 1K at R14 & R15. Just my own stupid carelessness. It's all better now. NO HUM.

Lesson - double check everything. Then double check it again.

Question, is there any possiblity that having those resistors in the ckt for a few hours would cause any long term damage???

 

[dsavitsk]

Quote:

Originally Posted by sandbasser /img/forum/go_quote.gif Question, is there any possiblity that having those resistors in the ckt for a few hours would cause any long term damage???

No. Those resistors are there to quell any possible tube oscillation. Pete's original didn't use them at all, but we added them just in case. You are probably safe to jumper over them, or to use literally any value. In fact, I am surprised that the 100K's caused problems, and my guess would be that there might actually have been a bad solder joint on one of them. But, at any rate, no chance of hurting anything.

 

[tomb]

Oops! Someone pointed out to me that I forgot to post the actual PDF templates for the case if you want to drill your own. I've posted those files in the last entry of the Build Thread, now, if you want them.

 

[Daishiknyte]

Hey,

I've been lurking around here for some time. Thanks to you lot, I've already found myself starting down the slippery slope...I love you, my wallet hates you.

With classes finally starting to move into the hands-on classes (*engineering), I'm looking at small personal projects to get a bit more experience-end the SSA. Unfortunately, it looks like all the kits have been snapped up.

Should I hold off for a bit longer and hope that tomb's awesomeness rewards my patience *and the site is restocked? Or am I better off piecing together the parts needed? *Is there another site selling kits?

Come on guys, it is all your fault I am worked up about this!

Help a guy out.


*-edits

 

[gore.rubicon]

Quote:

Originally Posted by Daishiknyte /img/forum/go_quote.gif Hey, I've been lurking around here for some time. Thanks to you lot, I've already found myself starting down the slippery slope...I love you, my wallet hates you. With classes finally starting to move into the hands-on phase (Mech. Eng. Tech), I'm looking at small personal projects to get a bit more experience-end the SSA. Unfortunately, it looks like all the kits have been snapped up. Should I hold off for a bit longer and hope that tomb's awesomeness rewards my patience? Or am I better off piecing together the parts needed? Come on guys, it is all your fault I am worked up about this! Help a guy out.

You can piece parts together, wait for TomB, or get another kit?

 

[tomb]

Quote:

Originally Posted by Daishiknyte /img/forum/go_quote.gif Hey, I've been lurking around here for some time. Thanks to you lot, I've already found myself starting down the slippery slope...I love you, my wallet hates you. With classes finally starting to move into the hands-on classes (*engineering), I'm looking at small personal projects to get a bit more experience-end the SSA. Unfortunately, it looks like all the kits have been snapped up. Should I hold off for a bit longer and hope that tomb's awesomeness rewards my patience *and the site is restocked? Or am I better off piecing together the parts needed? *Is there another site selling kits? Come on guys, it is all your fault I am worked up about this! Help a guy out. *-edits

From the time I order more cases, it'll be another six weeks at least. I'm not even sure about offering kits again - there's been quite a run on tubes in the last week or so ... Hopefully, I'll have a chance to re-assess again this weekend. As I said, though - it'll be quite awhile from the point of ordering.

 

[revolink24]

Quote:

Originally Posted by tomb /img/forum/go_quote.gif Oops! Someone pointed out to me that I forgot to post the actual PDF templates for the case if you want to drill your own. I've posted those files in the last entry of the Build Thread, now, if you want them.

Thanks for doing that, I received my case though and you did a nice job on drilling them yourself, so thanks, I appreciate that

 

[luvdunhill]

 

[tomb]

Quote:

Originally Posted by luvdunhill /img/forum/go_quote.gif <img]http://lh6.ggpht.com/_8RHE4QJC4jI/SqAuxjKTUEI/AAAAAAAAAfM/O5c35kAGnts/s640/PP%20013.jpg[/img>

Very nice! Are those the new Ortho's?

 

[royewest]

Hope it's OK to post here that I have my unbuilt and basically unopened Beezar SSMH kit for sale in the amps-for-sale forum. (I've built 2 and am buried with work so don't have time in the forseeable future to build this one.)

I made some bravado statement there about "highest offer" by 9 this morning, but really, it will remain for sale until someone wants to pay me what I paid Beezar, so I can recoup my costs.

 

[luvdunhill]

Quote:

Originally Posted by tomb /img/forum/go_quote.gif Very nice! Are those the new Ortho's?

yes they are

Audez'e

 

[tomb]

Quote:

Originally Posted by luvdunhill /img/forum/go_quote.gif yes they are Audez'e

Cool! That silver looks better than the gold ones.

 

[ninshin]

hi, i just built a starving student, but i had to reopen it up for some maintenance and now there's a high pitched whine that changes when i move my headphones, but it's not the tubes cause i changed them up and it's in one channel. anyone got the same problem and know why?

 

[tomb]

Quote:

Originally Posted by ninshin /img/forum/go_quote.gif hi, i just built a starving student, but i had to reopen it up for some maintenance and now there's a high pitched whine that changes when i move my headphones, but it's not the tubes cause i changed them up and it's in one channel. anyone got the same problem and know why?

This is classic when someone opens up a case and then puts it back together. Check your wiring - leads that are not heat shrunk, exposed ends, wires that got crimped into the case slots, caught by the screws, etc. You've got something contacting the case and causing a short.