Filter caps on a Rocket -- re-configure (no stack)?

Express, Liverpool, Rocket, Dirty Little Monster, etc.

Moderators: pompeiisneaks, Colossal

User avatar
dartanion
Posts: 1562
Joined: Fri Mar 23, 2007 9:02 pm
Location: San Jose, CA
Contact:

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by dartanion »

I do my filter caps in different manner than Ken did. I still glue the caps to the chassis, although I use radial electrolytics setup in a single line next to the preamp/pi board. I will see if I have a photo handy of this layout.
Eardrums!!! We don't need no stinkin' eardrums!
telentubes
Posts: 897
Joined: Mon May 24, 2010 11:29 pm
Location: Bellingham, WA.
Contact:

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by telentubes »

Here is how I did it. Amp is quiet as a mouse.
You do not have the required permissions to view the files attached to this post.
User avatar
Colossal
Posts: 5205
Joined: Sat Oct 20, 2007 9:04 pm
Location: Moving through Kashmir

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by Colossal »

telentubes wrote:Here is how I did it. Amp is quiet as a mouse.
Very nice layout! Well planned out. Everything flows. Cool heater wiring too.
telentubes
Posts: 897
Joined: Mon May 24, 2010 11:29 pm
Location: Bellingham, WA.
Contact:

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by telentubes »

Here's another version using an 80uf in place of two 40s.
You do not have the required permissions to view the files attached to this post.
User avatar
Big Jim
Posts: 408
Joined: Sun Aug 30, 2009 2:45 pm
Location: Central Florida

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by Big Jim »

I really like your building style Telentubes! Very neat and tidy. :D
User avatar
Reeltarded
Posts: 10189
Joined: Sat Feb 14, 2009 4:38 am
Location: GA USA

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by Reeltarded »

It's so nice it looks like stuff is missing! The dress around the tubes is art!
Signatures have a 255 character limit that I could abuse, but I am not Cecil B. DeMille.
Paultergeist
Posts: 189
Joined: Tue Dec 12, 2006 5:18 pm

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by Paultergeist »

The photos posted by telentubes are particularly useful, as they really help me to visualize the idea I had in mind.

My sincere thanks again to all responders for their helpful ideas.

Paul
Paultergeist
Posts: 189
Joined: Tue Dec 12, 2006 5:18 pm

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by Paultergeist »

....and, if it is not too late to ask a few follow-up questions.....

Telentubes, your layout diagram intrigues me. I confess that I do not fully understand the rationale behind some of the design of your filter-cap rail. Specifically, it is the set up of the 80uF cap that leaves me scratching my head:

Can you tell me the rationale behind connecting the positive end of the 80uF to chassis ground via the (2) 100K resistors in series?
User avatar
fishy
Posts: 377
Joined: Fri Jul 20, 2007 12:09 am
Location: Chandler, Az

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by fishy »

If you look at the postd layouts for all the TW builds inn the file section you will notice these resistors on the Express and Liverpool but absent on the Rocket.
These drain those caps. Not sure why they were absent from the Rocket.

I suspect they are there for that reason.
User avatar
dartanion
Posts: 1562
Joined: Fri Mar 23, 2007 9:02 pm
Location: San Jose, CA
Contact:

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by dartanion »

Found a photo of my Torpedo 50 (Rocket style circuit with EL34s) showing how I do my filter caps and dropping string. Simple to do and easy to change if you get a bad cap.
You do not have the required permissions to view the files attached to this post.
Last edited by dartanion on Tue Jun 26, 2012 8:26 pm, edited 1 time in total.
Eardrums!!! We don't need no stinkin' eardrums!
User avatar
M Fowler
Posts: 14036
Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by M Fowler »

Well if were talking non-traditional TW amps then I have a few different board styles I use.
You do not have the required permissions to view the files attached to this post.
User avatar
dartanion
Posts: 1562
Joined: Fri Mar 23, 2007 9:02 pm
Location: San Jose, CA
Contact:

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by dartanion »

Those look nice Mark. I too have done the filer caps and dropping string on boards, however I like the clean look and convenience of the style I am using. And, you I love doing some true point to point in my builds. I had a whole mess of radial electrolytics that I got for a song, so I came up with using them in this fashion. Also, the first cap is actually a snap in style cap, but works great for this style. I got a whole mess of those for ultra cheap too. Nice quality stuff to boot.

You might notice that my board has a bunch of extra eyelets. The board has the necessary eyelets and space for the reverb components. I do this on my non-reverb Torpedo models so that they can be converted to reverb models with not much hassle.
Eardrums!!! We don't need no stinkin' eardrums!
User avatar
M Fowler
Posts: 14036
Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND

Re: Filter caps on a Rocket -- re-configure (no stack)?

Post by M Fowler »

Darin,

Yes its good to have the option of adding reverb to the board like you do.

I have some large snap in caps I need to use up too, hoping to build some bass amps one of these days.

Also I want to do some other circuits with the old odd ball tubes I have. :)

Mark
Post Reply