Welcome, Guest. Please login or register.
Did you miss your activation email?
March 28, 2024, 05:53:02 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
| | |-+  Incoming voltage
« previous next »
Pages: [1] Go Down Print
Author Topic: Incoming voltage  (Read 5447 times)
hywelg
Hero Member
*****
Offline Offline

Posts: 896


View Profile
« on: February 18, 2013, 09:39:48 PM »

Conclusive proof this evening that only a couple of volts drift affect the amp tone.

We started our rehearsal with 242.5 volts (UK) and it sounded great, then after a while between numbers I was just playing about, clean, and thought it had lost its edge checked my guitar to see if I had nudged the tone pot, but no, checked the plug in voltmeter and lo the voltage had dropped to 240.2

Then later it was down to 238.7, what a difference!!!  lifeless and dull. Now I need to see how the bias drifts over than range. So I will take my DMM with me as well next time. Or maybe theres more to it than that?
Logged
mcinku
Administrator
Hero Member
*****
Offline Offline

Gender: Male
Posts: 1084



View Profile WWW
« Reply #1 on: February 19, 2013, 09:17:03 PM »

If you have access to variac,.... that's best way to check things and confirm your assumption.
 Wink
Logged

plasticvonaband
Hero Member
*****
Offline Offline

Gender: Male
Posts: 747


Pickin and Grinnin since 1989


View Profile WWW
« Reply #2 on: February 19, 2013, 09:44:54 PM »

It definetly makes a difference. At peak consumption time around here, my incoming voltage drops to around 118-119 Amp sounds kinda dull. When it's back up to 120-121, the amp sounds much more lively.

I think is has more to do with the preamp than the output side. That's why I think if one wants to put VVR in of these, it should be output side only.

Gregg
Logged

Overdrive is like peanut butter. Some like it crunchy, some like it creamy.
Bluesmaster 50 2x12 combo and some guitars.
Pickmaster
Hero Member
*****
Offline Offline

Gender: Male
Posts: 504



View Profile WWW
« Reply #3 on: February 22, 2013, 01:27:43 PM »

That’s why all my amps have a 230v power transformers which gives me little bit more volts (in UK) and better tone. Believe me some extra volts won’t blow a trany,  especially when they are fan cooled.

Yes, it’s a good idea to get a power conditioner/regulator as well.

Cheers
Logged

Founder and technical director of the Custom Cabinet Company – CCC
http://www.customcabcom.com
captainbackfire
Full Member
***
Offline Offline

Posts: 113



View Profile
« Reply #4 on: February 22, 2013, 03:55:54 PM »

Would this mean that using an OTS with a 240v PT in a 220v contry isn't ideal? As in it would have a tendency to sound dull or lifeless?

Nik once emailed me about this concern. He said it doesn't matter and my country also peaks at 240v+ anyway.

Thanks for these new findings, definitely worth investigating. I did notice some amp "moods"

Nick
Logged
hywelg
Hero Member
*****
Offline Offline

Posts: 896


View Profile
« Reply #5 on: February 22, 2013, 07:48:10 PM »

My OTS has both 220 and 240v taps so you could swap. No 230v though.

Regulator is out for the reason of expense. I am considering building a Variac into a rack box with digital input and output voltage readouts. Does anyone know what sort of rating variac I would need? I reckon 3A should be enough surely?
Logged
mcinku
Administrator
Hero Member
*****
Offline Offline

Gender: Male
Posts: 1084



View Profile WWW
« Reply #6 on: February 22, 2013, 08:46:22 PM »

I reckon 3A should be enough surely?


more than enough
Logged

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.