Crack Addiction - updates?

Dr. Toobz · 12455

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Offline Dr. Toobz

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on: April 09, 2010, 11:15:06 AM
With the Queen being out of commission for a few days, and the fact that you guys had to double the order of chassis plates, I was wondering how close we are to seeing the first kits ship out?



Offline Doc B.

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Reply #1 on: April 09, 2010, 11:43:49 AM
Just need to do a little final editing of the assembly manual. The first run will begin shipping next week. The second run is between a third and halfway sold out. I think we sold 4 just today. Second run chassis plates are on order and the second run will probably begin shipping in about three weeks. That will pretty much consume the old stock American 6080s and 6AS7s I have on hand. We will then begin to purchase new Eastern European tubes, and so by the third production run the price will probably go up a bit, to maybe $219 or so.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.


Offline Doc B.

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Reply #2 on: April 12, 2010, 01:41:12 PM
The Crack manual is complete as of this afternoon. We ran into one error in our inventory - we ended up with stranded wire rather than solid core for the hookup wire. The correct wire should be here in a day or two and the kits will begin shipping.

In the meantime PB and I got the production prototype of the C4S active load upgrade for Crack built and photographed. As if the name Crack didn't bother some folks enough, I've decided the appropriate name for the upgrade kit is Speedball. We should have parts and manual pulled together and an order page active for the upgrade kit not too long after we begin shipping the amp kits. Price for the upgrade will be around $100 -$120.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.


Offline Bryon

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Reply #3 on: April 12, 2010, 03:05:31 PM
If I ordered Crack today, will I be able to get in on the second run?  and will the upgrade be available before it ships so I can get a Speedball with the Crack?

Bryon



Offline Doc B.

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Reply #4 on: April 12, 2010, 04:58:21 PM
Yes we still have a few kits left in the second run. The upgrade kit is a separate kit, and I can't say exactly when it will begin shipping. But we will do our best to feed your addictions.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.


Offline Dr. Toobz

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Reply #5 on: April 12, 2010, 05:15:24 PM
Awesome. I haven't been this excited since....well, my last BH project! Sounds like some of us who bought the kit the day it was released may have them up and running by the end of April.



Offline flatmap

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Reply #6 on: April 12, 2010, 07:22:32 PM
For the inexperienced... what is an "C4S active load upgrade"? 



Offline Grainger49

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Reply #7 on: April 13, 2010, 12:04:48 AM
If I ordered Crack today, will I be able to get in on the second run?  and will the upgrade be available before it ships so I can get a Speedball with the Crack?

Bryon

Do ya think the DEA is monitoring the internet?  Are they having fun with all the Bottleheads on Crack?



Offline Jim R.

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Reply #8 on: April 13, 2010, 05:50:19 AM
What, no rock and roll, asks Ian Drury?

Doc,  how did the Axon caps work out and will they be part of the upgrade kit?  Will the upgrade include active loads for both the gain and output tubes as you had been playing with?

-- Jim

Jim Rebman -- recovering audiophile

Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).

s.e.x. 2.1 under construction.  Want list: Stereomour II

All ICs homemade (speaker and power next)


Offline Doc B.

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Reply #9 on: April 13, 2010, 07:00:07 AM
Hi Jim,

We're going to let folks buy their own caps, as we can't get enough of a price break to make it feasible for us to offer them. The upgrade will indeed include C4S boards for both the input voltage amps and the output cathode followers

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.


Offline Paul Birkeland

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Reply #10 on: April 13, 2010, 07:33:25 AM
For the inexperienced... what is an "C4S active load upgrade"? 

This upgrade replacing loading resistors with a high impedance "stack" of bipolar junction transistors.  For the first stage of the Crack, this will result in greatly reduced distortion, a lower noise floor, and increased gain.  Most users also report an increase of fine detail, along with other positive qualities.  For the output stage, the distortion is vastly reduced, but noise rejection remains about the same.  (This isn't a huge issue since the second stage is a current amplifier, not a voltage amplifier)


Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Jim R.

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Reply #11 on: April 24, 2010, 07:17:22 AM
Doc,

Can you give me an idea of how much vertical height inside the chassis the speedball upgrade will require?  Or are the Axon caps the taller of the options?  Just trying to figure out how tall to make the base if I want to get started on a different one.

Thanks,

Jim

Jim Rebman -- recovering audiophile

Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).

s.e.x. 2.1 under construction.  Want list: Stereomour II

All ICs homemade (speaker and power next)


Offline Paul Birkeland

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Reply #12 on: April 24, 2010, 09:03:18 AM
The Speedball upgrade uses all but 1/8" of the height available in the base.  Going shorter isn't really an option, going taller is certainly an acceptable possibility.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline JC

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Reply #13 on: April 24, 2010, 09:25:43 AM
I'm curious, does this include the feet on the bottom of the base, presuming it comes with feet?

Jim C.


Offline Paul Birkeland

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Reply #14 on: April 24, 2010, 09:31:29 AM
The kit includes the feet.  The Speedball upgrade is not so tall that it is visible between the ground and wood base when the feet are installed, but it is pretty close.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man