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Crack;Bottlehead OTL - Page 220

post #3286 of 6360
Quote:
Originally Posted by NightFlight View Post
 

 

If your poking around in a live circuit to find a short, use a non-conductive device. Better known as a stick.

 

Haha!  That's amazing!  :beerchug:

 

 

 

Sound advice though.

post #3287 of 6360

What about your tongue? Can you use your tongue?

post #3288 of 6360

Reread the safety instructions before you go near the amp again. After you have done that and have disconnected the amplifier from mains power go back and inspect all of the solder joints. It sounds like there was a connection that was not soldered and not making contact, that made contact after the impact of dropping the chassis panel.

post #3289 of 6360

http://www.ee0r.com/dnl.html
Quote:
Originally Posted by palmfish View Post

What about your tongue? Can you use your tongue?
post #3290 of 6360
Quote:
Originally Posted by palmfish View Post
 

What about your tongue? Can you use your tongue?

 

Start with a 9V. If you can handle that, try jumper cables. If you're still feeling fine, ok go ahead and lick your crack...

 

 

 

 

 

 

 

 

 

 

 

 

 

:blink:

post #3291 of 6360
Quote:
Originally Posted by Armaegis View Post
 

 

ok go ahead and lick your crack...

 

 

 

post #3292 of 6360

Looking for a little bit of help because I have just realised I need some kind of switching or splitter box as my dac only has one set of analog outs. At the moment these go to the speaker amp. I don't want to keep plugging in and out cables every time I use the Crack. Any ideas as to what to get would I be after a switch or splitter?

 

TIA

post #3293 of 6360
Quote:
Originally Posted by JamieMcC View Post
 

Looking for a little bit of help because I have just realised I need some kind of switching or splitter box as my dac only has one set of analog outs. At the moment these go to the speaker amp. I don't want to keep plugging in and out cables every time I use the Crack. Any ideas as to what to get would I be after a switch or splitter?

 

TIA

Hmm, that's a tricky question. If you don't want to disconnect cables at all, then you will need both.

post #3294 of 6360

Buy another DAC :)

post #3295 of 6360

Anyone tried the HD 700 on a Crack with impressions? I'm thinking of purchasing a pair since the price dropped. According to the folks at Headfonia, the Crack drives the HD 700 as beautifully as it does the HD 650.

post #3296 of 6360
HD700 sound really good with Crack. Just make sure to try different tube pairing to get sound you prefer
post #3297 of 6360
Quote:
Originally Posted by NightFlight View Post
 

 

[rant]

Sorry to drag up an old post - I was just searching the thread for unrelated items when I came across this post.

 

I'd like to iterate a few important points.

 

Never use your bare hands to poke around live circuits. This goes doubly so for higher voltage circuits. Putting on shoes may not save your life, its just good advice in case you are accidentally shocked. It does not provide protection. Electricity is devilish and it can find the most odd path to ground you never considered. Also, if you are electrocuted and survive you could end up with heart damage. Electricity is no joke.

 

If your poking around in a live circuit to find a short, use a non-conductive device. Better known as a stick. It can be wood or plastic. If wood - make certain its not wet. In fact make certain nothing is wet. If plastic - make certain it is non-conductive! A pen is probably a bad idea.

 

If you don't know what you are doing and play around with electricity there is a good chance it Darwinism will come into play and you will become a statistic.

[/rant]

 

Amen, brother. As a survivor of multiple high energy shocks (the worst about 3000 volts) I can't agree more. If you're unsure of what you're doing, take it to a shop and let a pro look at it. As much fun as putting your own kit together is, it doesn't qualify you as an electronic technician. Yeah, I know, that might not come across well on this particular list, but it's true. High voltage hurts, and I have the scars to prove it.

 

Personally, I'm kind of surprised that there is no bottom cover in the Crack kit. I think it's horribly unsafe to leave the bottom cover off of an amp like this. All someone needs to do is pick this thing up the wrong way with a live plug, and you'll be lying on the floor wondering what happened. The first mod on everyone's crack kit should be a bottom cover. Don't lecture me about ventilation.

 

Ok, I'm going back to lurking now. Sorry for the interruption.

post #3298 of 6360
Quote:
Originally Posted by JamieMcC View Post
 

Looking for a little bit of help because I have just realised I need some kind of switching or splitter box as my dac only has one set of analog outs. At the moment these go to the speaker amp. I don't want to keep plugging in and out cables every time I use the Crack. Any ideas as to what to get would I be after a switch or splitter?

 

TIA

http://www.ebay.com/itm/2Pc-Monster-RCA-AV-Audio-Splitter-Plug-Adapter-1-Male-to-2-Female-Gold-Plated-/231097326209?pt=US_Audio_Cables_Adapters&hash=item35ce795a81

post #3299 of 6360
Quote:
Originally Posted by UmustBKidn View Post

 

Personally, I'm kind of surprised that there is no bottom cover in the Crack kit. I think it's horribly unsafe to leave the bottom cover off of an amp like this. All someone needs to do is pick this thing up the wrong way with a live plug, and you'll be lying on the floor wondering what happened. The first mod on everyone's crack kit should be a bottom cover. Don't lecture me about ventilation.

 

Thank you for a such a simple and important idea it gave me a shiver to think what might happen if inquisitive little hands picked it up!  It is very easy to add some wire mesh for a bottom cover so not to effect the ventilation and give that piece of mind.  Definitely will add this modification to my build.

 

HNC-A Perforated Metal MeshHNC-B Perforated Metal Mesh  Monel 400 Wire Cloth,Monel Wire Mesh

 

 

 

 

Great thanks I will give them a try.


Edited by JamieMcC - 11/23/13 at 4:04am
post #3300 of 6360

I would agree that if you have received multiple high voltage shocks you should be very cautious around anything electronic until you understand why you keep getting shocked and work out something to avoid the problem. Certainly anyone can cover the bottom of the amp quite easily if they feel that would solve a problem for them. Do be sure to include ventilation holes. Please also remember that the tubes get hot and one can get a burn by touching them when they are operating. My advice is even if you put a cover on the bottom and a cage on the top, don't let anyone poke around the amp when it is plugged in, or any of your other gear either. These are DIY kits. If you are taking measurements on a live amp be sure you understand how to do it safely. You need to use some common sense if you take on such a project.We haven't figured out how to package that in a kit yet, so one has an obligation is to provide their own.

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