Welcome, Guest. Please login or register.
Did you miss your activation email?
November 21, 2024, 07:36:13 AM
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
|-+  American Style
| |-+  5F4 Super Amp
| | |-+  5F4 - FAT mod		 « previous next »
Pages: [1] Go Down Print
Author Topic: 5F4 - FAT mod  (Read 43195 times)
bluesfendermanblues
Sr. Member
****
Offline Offline

Gender: Male
Posts: 452



View Profile
« on: August 05, 2011, 11:46:13 PM »
Dear all,

I have recently build a 5F4 Tweed super clone - very close to stock, using hammond transformers and a chassis from TAD.
Speakers are a pair of Weber 10A125, (which I used to use in a RI Bassman 59 - so they are well played in)

As you probably all know, a 5F4 is a pretty simple and straight forward amp, and it worked flawless at first power up.

However, a 5F4 is one of the more bright tweed amps and is often referred to (on the clone companies websites) as the perfect humbucker amp. I'm a strat player, so what do a guy do?

I searched a lot of forums - this one included - in order to get some tricks to fatten up the tone. Have tried all tricks in the book:

After a lot of experimentation I have arrived at the following fat switch - (BTW I didnt 'invent' this feature, but am only posting to share my personal experience that this is a usefull to mod the tone stack in a 5F4):

Fat switch:
Installed an on-off-on switch with a 500p Mica cap and a 1000p Mica cap - between V1 and V2 below the chassis - that can put none of one of the caps in parallel with the 250p treble cap. It provides you with the following sound options:

Pos 1 (adding a 1000p): sounds like a big fat Tweed Twin 5E8a
Pos 2 (no extra cap): stock 5F4 circuit
Pos 3: (adding a 500p): sounds like a 5E5 pro

Cathode Bias Switch
I have also used the 'ground' switch for cathode bias with a 250 ohm parallel by a 50uF cap - this option sounds very close the sotck fixed bias option.

Paul C mod
Have also tried the Paul C mod, but IMO it didn't do anything for the tone of this amp (same goes for a new build 5E3). Paul C used this mod on a Princeton Reverb, but according the himself never on a tweed: http://www.firebottle.com/fireforum/fireBB.cgi?cfg=dlx&enter=go

Hope this info is usefull to some of the 5F4 cloners out there!
« Last Edit: August 06, 2011, 07:19:18 AM by bluesfendermanblues » Logged
Respect for the big guy's work....we're at this part of the forum because of HAD's amps.
plasticvonaband
Hero Member
*****
Offline Offline

Gender: Male
Posts: 747


Pickin and Grinnin since 1989


View Profile WWW
« Reply #1 on: August 05, 2011, 11:50:06 PM »
Very Nice!! Your mods are always the bestest Wink
Logged
Overdrive is like peanut butter. Some like it crunchy, some like it creamy.
Bluesmaster 50 2x12 combo and some guitars.
bluesfendermanblues
Sr. Member
****
Offline Offline

Gender: Male
Posts: 452



View Profile
« Reply #2 on: August 06, 2011, 07:28:50 AM »
Quote from: plasticvonaband on August 05, 2011, 11:50:06 PM
Very Nice!! Your mods are always the bestest Wink

Thanks, but it really annoyed me that this great combo was not voiced for a strat... at least not for playing blues. A 5F4 focus on higher frequencies and has a "hollow" mid register and you have to cranck it to "9" to get a little bit of blues drive. The stock circuit is great for Gibson humbucker guitars, though.

The above mentioned mod makes this a great blues amp simply by "moving" the energy level down a couple of registers, down where a strat lives in blues music.
Logged
Respect for the big guy's work....we're at this part of the forum because of HAD's amps.
Tone Control
Sr. Member
****
Offline Offline

Gender: Male
Posts: 274



View Profile
« Reply #3 on: August 06, 2011, 07:27:31 PM »
My Victoria Super sounds fine on the normal channel with my strats - presence and treble both high on 10 (out of 12)
the bright channel works well for humbuckers, with the treble on 6, and presence on 3
It contains P10R drivers
It drives with a strat once you get past 4 (out of 12)
It is more mid-sounding than a Victoria Tweed Twin
 
Which Super is truer to the original? I've never seen an original
Logged
Dr Tone Control, Strats mostly, prefer saturated clean tones, a little OD sometimes
BM50, JTM45, 36w EF86, DZ30, Expression, + non-Ceriatones (Matchless, Victoria, Wienbrock)
Just started with pedals a little after a 10 year purist spell, but usually just delay
bluesfendermanblues
Sr. Member
****
Offline Offline

Gender: Male
Posts: 452



View Profile
« Reply #4 on: August 07, 2011, 02:00:31 PM »
Quote from: Tone Control on August 06, 2011, 07:27:31 PM
My Victoria Super sounds fine on the normal channel with my strats - presence and treble both high on 10 (out of 12)
the bright channel works well for humbuckers, with the treble on 6, and presence on 3
It contains P10R drivers
It drives with a strat once you get past 4 (out of 12)
It is more mid-sounding than a Victoria Tweed Twin
 
Which Super is truer to the original? I've never seen an original

Hi Tone, funny how different these amps can sound. Maybe these amps need a lot of burn-in time just like the Dumble amps.

What preamp tube are you using in your super amp.
Logged
Respect for the big guy's work....we're at this part of the forum because of HAD's amps.
plasticvonaband
Hero Member
*****
Offline Offline

Gender: Male
Posts: 747


Pickin and Grinnin since 1989


View Profile WWW
« Reply #5 on: August 07, 2011, 04:45:22 PM »
I think most new amps do. I think most of us are used to either buying used well broken in amps, new amps that have had alot of break in at the factory, or buying an amp at a music store (remember when we used to do that??) that have alot of burn in time in the store.
Logged
Overdrive is like peanut butter. Some like it crunchy, some like it creamy.
Bluesmaster 50 2x12 combo and some guitars.
bluesfendermanblues
Sr. Member
****
Offline Offline

Gender: Male
Posts: 452



View Profile
« Reply #6 on: August 07, 2011, 09:27:23 PM »
Tried another GE NOS 12AY7 ...... much better!

Fuller sound even with the added switch in "off" position, which is the same as stock circuit.

I'm really surprised by the variation NOS tubes these days. Are NOS really worth it. Any tips for new 12ay7s??
Logged
Respect for the big guy's work....we're at this part of the forum because of HAD's amps.
plasticvonaband
Hero Member
*****
Offline Offline

Gender: Male
Posts: 747


Pickin and Grinnin since 1989


View Profile WWW
« Reply #7 on: August 10, 2011, 10:39:58 PM »
The only new production ones that i know of are ElectroHarmonix ones. I've had good luck with ANOS GE ones both standard and JAN versions from KCA Nos tubes. It seems like the ANOS ones that are burned in a little bit seem to work better, and are fairly reasonable, about the same as new production for the non JAN version.

Hope this helps!

Gregg
Logged
Overdrive is like peanut butter. Some like it crunchy, some like it creamy.
Bluesmaster 50 2x12 combo and some guitars.
bluesfendermanblues
Sr. Member
****
Offline Offline

Gender: Male
Posts: 452



View Profile
« Reply #8 on: August 11, 2011, 10:01:57 AM »
Quote from: plasticvonaband on August 10, 2011, 10:39:58 PM
The only new production ones that i know of are ElectroHarmonix ones. I've had good luck with ANOS GE ones both standard and JAN versions from KCA Nos tubes. It seems like the ANOS ones that are burned in a little bit seem to work better, and are fairly reasonable, about the same as new production for the non JAN version.

Hope this helps!

Gregg

Hi PVAB, thanks for the tip.
I Have ordered a brand new EH 12AY7 and is looking at the KCA site.
Logged
Respect for the big guy's work....we're at this part of the forum because of HAD's amps.
plasticvonaband
Hero Member
*****
Offline Offline

Gender: Male
Posts: 747


Pickin and Grinnin since 1989


View Profile WWW
« Reply #9 on: August 12, 2011, 03:04:18 AM »
No prob! Hope it all works out! I'm seriously considering a 5E5A pro and will be in need of 12AY7's soon too Smiley let us know how it works out for ya!

Gregg
Logged
Overdrive is like peanut butter. Some like it crunchy, some like it creamy.
Bluesmaster 50 2x12 combo and some guitars.
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.