Welcome, Guest. Please login or register.
Did you miss your activation email?
November 21, 2024, 05:41:57 PM
Home Help Search Login Register
News: Ceriatone Forums are up and running!!!
 
Guests please register
Note: If you want to help you can donate to keep the forums alive.



Do you want to advertise on this forum ? Send me a private message.

Amplified Parts
+  Ceriatone Forum
|-+  Ceriatone
| |-+  Overtone
| | |-+  Tweaked Layout		 « previous next »
Pages: 1 [2] 3 4 ... 10 Go Down Print
Author Topic: Tweaked Layout  (Read 176833 times)
Mitch
Guest
« Reply #15 on: May 02, 2008, 04:49:35 PM »
I believe snipping the cap removes the 'treble bleed' function of the cap on the master volume- a common practice on valve/tube amps as it passes high frequencies through at lower volumes- rather like the 'loudness' control on a hi-fi.  I also own several old marshall amps- some of them sound good with it - some don't.  As soon as I removed one leg of the cap on my OTS I thought this removed the somewhat harsh overdrive tones at low volume- a very easy mod to do and a big bang for yer buck, going to try it at higher gig volume tomorrow to see the REAL difference Grin
Logged
jzucker
Full Member
***
Offline Offline

Posts: 156


View Profile
« Reply #16 on: May 02, 2008, 04:51:07 PM »
Quote from: Relicula on May 02, 2008, 03:47:25 PM
What does snipping the cap on the master volume do for the tone?

keeps high treble frequencies from skipping the master volume. The idea of those types of bypass caps is to let the master volume effect frequencies below a certain point. The cap across them allows frequencies above a certain cutoff to jump through the cap, bypassing the master. In this case, the cap is so small, it's debatable whether it was doing much.
Logged
poipounder57
Full Member
***
Offline Offline

Posts: 156



View Profile
« Reply #17 on: May 02, 2008, 07:12:02 PM »
Mahalo(Thanks) Jack...great job!!!  You mentioned not all of the mods are highlighted?  Well...guess I have to find my reading glasses:-)
Logged
Rocking on a rock in the middle of the Pacific:-)
jzucker
Full Member
***
Offline Offline

Posts: 156


View Profile
« Reply #18 on: May 02, 2008, 10:56:00 PM »
Quote from: poipounder57 on May 02, 2008, 07:12:02 PM
Mahalo(Thanks) Jack...great job!!!  You mentioned not all of the mods are highlighted?  Well...guess I have to find my reading glasses:-)

I don't think I said that. They are all in red. Not all of them are circled is what I meant.
Logged
poipounder57
Full Member
***
Offline Offline

Posts: 156



View Profile
« Reply #19 on: May 03, 2008, 01:53:07 AM »
Sorry my bad Embarrassed  must be my not so good speed reading skills Grin
Logged
Rocking on a rock in the middle of the Pacific:-)
jzucker
Full Member
***
Offline Offline

Posts: 156


View Profile
« Reply #20 on: May 03, 2008, 03:24:26 PM »
Here's a clip of mine with the mods.

Done with the changes for now. Big kudos to Gil Ayan and Scott Lerner for the circuit mods. They did the engineering, I did the soldering.

This clip features an Edwards '56 LP w/ P90s, clean, OD with Mid Boost and OD with PAB

http://www.sheetsofsound.net/demos/ceriatonemodded.mp3

http://www.sheetsofsound.net/demos/ceriatonemodded.wma
« Last Edit: May 03, 2008, 04:12:51 PM by jzucker » Logged
jzucker
Full Member
***
Offline Offline

Posts: 156


View Profile
« Reply #21 on: May 04, 2008, 12:57:21 PM »
I updated the first post to include the mouser BOM for the tweaks. Can the moderator make this a sticky? How do I contact the moderator?
Logged
mcinku
Administrator
Hero Member
*****
Offline Offline

Gender: Male
Posts: 1084



View Profile WWW
« Reply #22 on: May 04, 2008, 06:08:42 PM »
Quote from: jzucker on May 04, 2008, 12:57:21 PM
How do I contact the moderator?


This is him...
http://ceriatoneforum.com/index.php?action=profile;u=1
 Wink
Logged
My website

TW Express build
BM HRM build
Prinzetone build
Steven_nl
Sr. Member
****
Offline Offline

Gender: Male
Posts: 473



View Profile WWW
« Reply #23 on: May 04, 2008, 07:34:30 PM »
so, is Nik doing these mods?
Logged
jzucker
Full Member
***
Offline Offline

Posts: 156


View Profile
« Reply #24 on: May 05, 2008, 02:47:46 AM »
what do you mean is nik doing these mods?

Here's another clip:

http://www.sheetsofsound.net/demos/ceriatonetweaked2.mp3
Logged
Steven_nl
Sr. Member
****
Offline Offline

Gender: Male
Posts: 473



View Profile WWW
« Reply #25 on: May 05, 2008, 06:33:31 AM »
Hi Jake
Is Nik going to change the layout of the amp with these tweaks? I had the impression you made a remark about this in the TGP forum
you said "I believe Nik is now using a modified version of my (actually Ayan / Lerner) layout for his standard amp"
Logged
erwin_ve
Guest
« Reply #26 on: May 05, 2008, 07:26:11 AM »
This weekend I did most of the mods, only the 270pF to 330pF snubber caps and the 2X 50uF voltage supply caps i didnt.

Clean has become world class. Overdrive needs a tweek, probably the snubbers will do the job. Let you know when done.
Excellent lay-out J. Zucker! Also thanks to Mondo, Ayan and Learner!
Logged
ic-racer
Full Member
***
Offline Offline

Posts: 104



View Profile
« Reply #27 on: May 05, 2008, 03:49:26 PM »
Good work jzucker on the layout.

One question. What about the 10k trimmer for the PI. #124 and the original Overtone had 5k. Should this be in RED also? And the 100k Level pot (from 250k)?
« Last Edit: May 05, 2008, 04:20:49 PM by ic-racer » Logged
jzucker
Full Member
***
Offline Offline

Posts: 156


View Profile
« Reply #28 on: May 05, 2008, 10:26:12 PM »
Quote from: ic-racer on May 05, 2008, 03:49:26 PM
Good work jzucker on the layout.

One question. What about the 10k trimmer for the PI. #124 and the original Overtone had 5k. Should this be in RED also? And the 100k Level pot (from 250k)?

Yes, I'll have to double check mine. I guess it depends on which version you have. Mine already had the 100k level so I didn't see a change. Mine still has a 10k trimmer. I don't know about that one. I'll ask ayan.
Logged
ic-racer
Full Member
***
Offline Offline

Posts: 104



View Profile
« Reply #29 on: May 06, 2008, 02:26:35 PM »
Quote from: jzucker on May 05, 2008, 10:26:12 PM
Quote from: ic-racer on May 05, 2008, 03:49:26 PM
Good work jzucker on the layout.

One question. What about the 10k trimmer for the PI. #124 and the original Overtone had 5k. Should this be in RED also? And the 100k Level pot (from 250k)?

Yes, I'll have to double check mine. I guess it depends on which version you have. Mine already had the 100k level so I didn't see a change. Mine still has a 10k trimmer. I don't know about that one. I'll ask ayan.

Ok, so it looks like those were changes to the Overtone Niki already put into production. Maybe those could be annotated on the layout for those with the original, older versions that want to upgrade.

Not to complicate things, but it looks like Niki may have given you a layout file that did not incorporate his update to the way the switches in the back were wired. #124 used slide switches, but the Overtone uses toggles, and the pins on the toggle are "opposite" the throw of the lever.

* back switches.jpg (17.97 KB, 233x178 - viewed 1520 times.)
Logged
Pages: 1 [2] 3 4 ... 10 Go Up Print 
« previous next »
Jump to:  


Login with username, password and session length

Powered by MySQL Powered by PHP Powered by SMF 1.1.12 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!

CeriaTone Forum is not afiliated with Ceriatone Amplifications. The CeriaTone and name, logo and related trademarks and service marks, owned by CeriaTone. , are registered and/or used in the U.S. and many foreign countries. All other trademarks, service marks, and trade names referenced in this site are the property of their respective owners.