Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: vanofmonks on June 20, 2010, 05:06:23 PM

Title: Built a Crack this weekend... couldn't build it stock though :)
Post by: vanofmonks on June 20, 2010, 05:06:23 PM

Replaced the final PS Resistor with a choke.  Put c4s's on th driver tube.  Added a crossfeed circuit.  The crossfeed doesn't seem to do anything, and it seems to have only about a 2k input impedance.  So i'm not sure if I screwed it up.  It still sounds awesome.
(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fimg697.imageshack.us%2Fimg697%2F420%2Fcrackbottom1.jpg&hash=3fbee569a92b4acd729c817bf7cff4f69d314bb0)


(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fimg227.imageshack.us%2Fimg227%2F1745%2Fcrackbottom2.jpg&hash=f5de73954e6c4d42721fcd0b28625825b3afb10c)


(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fimg94.imageshack.us%2Fimg94%2F4862%2Fcracktop.jpg&hash=9e06537463800d1094b79ba5e60ea7fd691ba200)
Chris

Title: Re: Built a Crack this weekend... couldn't build it stock though :)
Post by: Paul Birkeland on June 20, 2010, 05:19:43 PM

Which choke did you end up going with?

Title: Re: Built a Crack this weekend... couldn't build it stock though :)
Post by: vanofmonks on June 20, 2010, 05:25:08 PM

The same one that is in the Paramour 1 with the transformer with the solder tabs.  That one is actually from one of my old paramours (thats why its painted).  It has a 270 ohm or so DCR with 10 H.  I think it is a triad c7x if I remember right.

Title: Re: Built a Crack this weekend... couldn't build it stock though :)
Post by: Paul Birkeland on June 20, 2010, 07:06:47 PM

Quote from: vanofmonks on June 20, 2010, 05:25:08 PM

I think it is a triad c7x if I remember right.

Perfect!  Are you using a CLC supply?  I ask because I stated that it is likely quiet enough to have 220uf-> 10H -> 220uf (or 440uf if you double up), but I have yet to try it.

Title: Re: Built a Crack this weekend... couldn't build it stock though :)
Post by: ironbut on June 20, 2010, 09:33:57 PM

CB,
Speaking of PS's, how did your experiment with the OD3(?) go? I like the creamy texture glow tubes give to some amps but sometimes it's a little too much for my taste.

Title: Re: Built a Crack this weekend... couldn't build it stock though :)
Post by: vanofmonks on June 21, 2010, 09:18:48 AM

I'm running it CRCLC.  Just replaced the resistor between 13 and 15 with the choke.