Search found 20 matches

by topbrent
23 Jan 2023, 01:56
Forum: Boutique Stompboxes dissected...
Topic: XTS Iridium Fuzz
Replies: 0
Views: 480

XTS Iridium Fuzz

Has anyone dissected one of the XTS iridium Fuzz pedals? Love the sound demos on youtube.
I have read that it has Red Llama DNA.
by topbrent
24 Jun 2011, 02:33
Forum: Stuff Seen for Sale
Topic: BYOC Optical Compressor
Replies: 0
Views: 1431

BYOC Optical Compressor

Selling this BYOC Optical Compressor. Great pedal, just looking for something different.

Expertly assembled by this1smyne aka T1M pedals.

$60.00 shipped

Image
by topbrent
10 Oct 2010, 21:49
Forum: Amplifiers
Topic: Divided by 13 FTR 37
Replies: 20
Views: 15891

Re: Divided by 13 FTR 37

Here are some gutshots of the FTR-37 that I nabbed from a spanish amp site.
by topbrent
10 Aug 2010, 06:17
Forum: Amplifiers
Topic: Divided by Thirteen CeeJay Eleven
Replies: 82
Views: 56499

Re: Divided by Thirteen CeeJay Eleven

Adding reverb would be a fairly straight forward operation, as the origin of the CJ-11 preamp is fender blackface. Fender did the leg work on this mod back in 1963. For the traditional 2 tube fender style reverb, take a good look at a princeton reverb schematic, as there would only be very minor twe...
by topbrent
17 Jun 2010, 02:02
Forum: Stuff Seen for Sale
Topic: Dr Z Carmen Ghia CLONE
Replies: 2
Views: 6119

Re: Dr Z Carmen Ghia CLONE

SOLD
by topbrent
10 Jun 2010, 09:32
Forum: Stuff Seen for Sale
Topic: Dr Z Carmen Ghia CLONE
Replies: 2
Views: 6119

Dr Z Carmen Ghia CLONE

Selling my beautiful handwired Dr. Z Carmen Ghia Clone. Just a very fun amp to play.  It reacts so predictably and really feels like an extension of your guitar.  Extremely easy to dial in great tones, and it takes pedals very well. Gorgeous oak head cab.  Built with Hammond transformers.  - 2 x12ax...
by topbrent
21 May 2010, 01:48
Forum: Amplifiers
Topic: Bad Kitty Classic Cat
Replies: 3
Views: 1886

Re: Bad Kitty Classic Cat

Looks like the power tubes are each individually cathode biased.

Most cathode biased amps share the R/C, but by separating them you can ever so slightly tune the power amp to the desired specs.
by topbrent
13 May 2010, 08:33
Forum: Amplifiers
Topic: Divided by Thirteen CeeJay Eleven
Replies: 82
Views: 56499

Re: Divided by Thirteen CeeJay Eleven

Sharp eyes guys! I totally missed that the 10uf on v1b was the boost. :oops: I never questioned what the brown wire was doing. I stared at the pictures for a long time, but just saw the 100k and ASSumed that was the boost function, augmenting the 6.8k mid resistor ala Allen RAW knob :oops: :oops: Lo...
by topbrent
28 Apr 2010, 06:59
Forum: Amplifiers
Topic: JCM800 as preamp
Replies: 12
Views: 9086

Re: JCM800 as preamp

Doug Hoffman of Hoffmanamps.com - EL34world.com has a great stereo Marshall preamp. Two tweakable Marshall pre-amps that you can run into what ever you wish. :hmmm: Here are a few links. http://el34world.com/projects/StereoPreAmp1.htm http://el34world.com/projects/images/stereoprelayout.gif http://e...
by topbrent
21 Apr 2010, 20:07
Forum: Amplifiers
Topic: Divided by Thirteen CeeJay Eleven
Replies: 82
Views: 56499

Re: Divided by Thirteen CeeJay Eleven

Here are some additional views of the CJ-11
by topbrent
30 Mar 2010, 23:45
Forum: Amplifiers
Topic: Need Ghia info Please
Replies: 7
Views: 2567

Re: Need Ghia info Please

Is there a template for the chassis holes? No drilling templates that I have seen. There aren't very many holes to drill, however. Just take a blank sheets of paper that are the size of your chassis, board, tube sockets and start moving them around to see what looks like a nice happy fit. Another i...
by topbrent
30 Mar 2010, 08:26
Forum: Amplifiers
Topic: Need Ghia info Please
Replies: 7
Views: 2567

Re: Need Ghia info Please

You can get most if not all of your parts from Ken at turretboards.com

http://turretboards.com/circuit_boards_ ... htm#Carmen Ghia

http://turretboards.com/

You can buy a uni-bit to take care of all the chassis holes.
by topbrent
29 Mar 2010, 23:19
Forum: Amplifiers
Topic: Need Ghia info Please
Replies: 7
Views: 2567

Re: Need Ghia info Please

This should take care of your needs.
by topbrent
22 Mar 2010, 07:17
Forum: Amplifiers
Topic: Divided by Thirteen CeeJay Eleven
Replies: 82
Views: 56499

Re: Divided by Thirteen CeeJay Eleven

By using a 100k pot it allows the player to have control over the level of boost. You're right there ! But when you go past ,let's say 25 K , can you still a difference when changing the value towards 100 K ? It affects the amount of boost to the signal. See the attached picture of what is happenin...
by topbrent
19 Mar 2010, 00:50
Forum: Amplifiers
Topic: Divided by Thirteen CeeJay Eleven
Replies: 82
Views: 56499

Re: Divided by Thirteen CeeJay Eleven

Shouldn't you midpot read 10 K instead of 100K ? No. Not necessarily. The stock CJ-11 has a fixed 6.8k mid resistor (like a stock vol-treb-bass AB763 front end,) [/u] and a 100k resistor in series on a push-pull boost switch. That is quite a big jump. By using a 100k pot it allows the player to hav...
by topbrent
15 Mar 2010, 02:19
Forum: Amplifiers
Topic: Divided by Thirteen CeeJay Eleven
Replies: 82
Views: 56499

Re: Divided by Thirteen CeeJay Eleven

tictac wrote:ALso, it's a Blackface TB tone circuit with a 6.8k resistor replacing the mid control and not a TMB as shown in the schematic.

TT
Read my caveats.

Here is the updated schem with the 4.7k cathode resistor on v2a. Thanks for the catch.
by topbrent
12 Mar 2010, 04:15
Forum: Amplifiers
Topic: Divided by Thirteen CeeJay Eleven
Replies: 82
Views: 56499

Re: Divided by Thirteen CeeJay Eleven

This is a quickie schematic I mashed together, but it basically gets the point across. Caveats: - I decided to just include the 100k mid pot as opposed to the 100k resistor on a switch. More adjustibility. - Also, I put the two bright caps on a switch, this way the player can have 100pF, 250pF or no...
by topbrent
08 Mar 2010, 18:43
Forum: Amplifiers
Topic: Divided by Thirteen CeeJay Eleven
Replies: 82
Views: 56499

Re: Divided by Thirteen CeeJay Eleven

Also, the coupling cap from the Pre to the PI is a .022 with a 470k load dump to ground. (Signal reduction)
by topbrent
08 Mar 2010, 12:30
Forum: Amplifiers
Topic: Divided by Thirteen CeeJay Eleven
Replies: 82
Views: 56499

Re: Divided by Thirteen CeeJay Eleven

Anyone know what the circuit is for the CJ-11? In a nutshell, it is all Fender deluxe...but a clever blend of two classic era's. The CJ-11 uses a AB763 blackface deluxe front end. .1/.047/100k slope-250pF tonestack, 100k plates, and uses 3.3k cathode resistors, bypassed by 10uF caps on both. The pu...
by topbrent
09 Feb 2010, 11:43
Forum: Amplifiers
Topic: Dr.Z Carmen + Route 66 (layouts, schems pics)
Replies: 21
Views: 13236

Re: Dr.Z Carmen + Route 66 (layouts, schems pics)

flood wrote:
conger wrote:Anyone know where I could find a layout for the Phoenix or Botany Bay Project?
what is the phoenix/botany bay project?
AKA name for Carmen Ghia amp