Welcome, Guest. Please login or register.
Did you miss your activation email?
November 22, 2024, 04:13:41 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
| | |-+  Modding an OTS 50 to HRM?		 « previous next »
Pages: [1] Go Down Print
Author Topic: Modding an OTS 50 to HRM?  (Read 10884 times)
achim1
Newbie
*
Offline Offline

Posts: 30



View Profile
« on: November 15, 2011, 09:31:49 AM »
Hei all you modding-specialists out there!

I am owning a very nice OTS 50, and my question is: Is it possible to mod the OTS with an EQ in the overdrive-channel? When possible, how could this be done? It's because I would have a distortion sound with a bit more midrange, and less upper range.
Thanks!
Logged
Pickmaster
Hero Member
*****
Offline Offline

Gender: Male
Posts: 504



View Profile WWW
« Reply #1 on: November 15, 2011, 01:17:25 PM »
1. Change 150k slope resistor to 68k 2watt. – bit more lower mids, compression and touch sensitivity.
2. add second 390pf capacitor to V2 tube !!!
3. Put 3 way switch on master volume with OFF, 33pf, and 64pf caps.
4. Change RATIO’s (X) feeding 150k resistor to 10k and following 0,005mf cap to 0,01mf.
5. Change MID-BOOST’s 390pf cap to 470, sweeter tone.
Logged
Founder and technical director of the Custom Cabinet Company – CCC
http://www.customcabcom.com
achim1
Newbie
*
Offline Offline

Posts: 30



View Profile
« Reply #2 on: November 15, 2011, 01:49:15 PM »
Thanks, Pickmaster!  Cheesy
But this isn't the "real" HRM-Mod, isn't it? Your mod increases mids and softens highrange, or am I wrong?
Logged
Pickmaster
Hero Member
*****
Offline Offline

Gender: Male
Posts: 504



View Profile WWW
« Reply #3 on: November 15, 2011, 02:59:02 PM »
Quote from: achim1 on November 15, 2011, 01:49:15 PM
Thanks, Pickmaster!  Cheesy
But this isn't the "real" HRM-Mod, isn't it? Your mod increases mids and softens highrange, or am I wrong?

OTS has lovely tone and you don’t want to spoil it with an additional HRM tone stack.
Suggested mods will make amp bigger, fatter and sweeter with reduced Highs.
As more capacitance on V2 more highs will be reduced on overdrive CH.

If you still want the HRM check out layout on the Ceriatone website, dead easy to built and install little board.

Be cool.
Logged
Founder and technical director of the Custom Cabinet Company – CCC
http://www.customcabcom.com
ampkits
Administrator
Sr. Member
*****
Offline Offline

Posts: 325


View Profile
« Reply #4 on: November 15, 2011, 08:18:34 PM »
Hi there achim, pickmeister Smiley

As for the HRM tonestack mod, since people are curious, you can indeed put one and make a switch for it.

This most likely means a floating cap at the switch.

You'd notice loss when it's engaged, but if it's your thing, then it's good.

Thanks!

nik
Logged
Pickmaster
Hero Member
*****
Offline Offline

Gender: Male
Posts: 504



View Profile WWW
« Reply #5 on: November 17, 2011, 02:46:58 PM »
Nice to hear from you Nik Smiley
HRM switch is a good idea!

Cheers
Logged
Founder and technical director of the Custom Cabinet Company – CCC
http://www.customcabcom.com
Pages: [1] 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.