Ceriatone Forum

Hi guys
I thought I'd give you a rundown of my "new" amp setup.

I use:
- 2xTungSol 12AX7, 1 Sovtes 12AX7LPS PI,2 TAD 6L6WGC-STR
- one of Erwins Dumblelators (serial)
- a TubeTown cab with 2 G12-65's

I haven't been a 100% happy with the clean channel of my OTS (May 2008 specs). I felt it sounded a bit "in your face" with to much " emphasis" on the attack of the note.
Also for my taste the amp had a bit of a dark (mid?) blanket over the sound. It lacked a bit of top end sparkle. Erwin did put a 67pf bright cap over de Master Volume, but that diodn' t seem to work well with my OD sound. The only thing that worked was turning my Presence all the way up top 9. The PAB switch was "unusable" because it sounded to boxy/nasal. Both in clean and OD.

I listened to a lot of clips on YouTube and got the impression that possibly the Bluesmaster cleans were more my cup of tea. Not enouigh cash to buy one unfortunatly.
I had been discussing this with Erwin and somehow/somewhere he dug up a layout which combined Bluesmaster cleans and OTS OD.
So he rebuilt my pre-amp and I must say I have been realy happy with the result. (Haven't tried it at gig level yet).
The amp now
- has a smoother attack (less in your face)
- has a "sweeter" sound with more high end
- even more sustain. Notes seem to bloom up (like a natural compression)
- OD has that nice thing where it almost feeds back
- the PAB is usable
- amp is bright enough without the use of bright switch of tons of of presence

Erwin didn't change the PI so it still has enough headroom

For me Erwin is the Dumble from Holland. Can't thank him enough.

When I get the courage I'll post a clip.

Greets and a Happy New Year to all

Steven







 

Steven; thanks!
But I'm not the Dumble from Holland. Just trying to perform what I've learned over the years.
The idea was yours; Bluesmaster clean with Non-HRM overdrive. My thought was; well let's try that. Only cons; time consuming because there are no layouts, schematics etc. So partly one has to tweak till it sounds good.

When the amp was at my place I made a clip; http://soundcloud.com/erwin_ve/room335 (http://soundcloud.com/erwin_ve/room335)

Happy holidays!

Erwin

Congrats Steven and Erwin! :chairdance:

Enjoy your amp Steven, Happy New year.

Erwin, I've never been able to get soundcloud clips to play in either FF or IE. I have just updated the Flash player from 10.0 to 10.1 and it still does nothing. Its not just your clip either, others I have tried won't play either.

Sounds more than great :) Congrats.

What guitar did you use in that clip?

Hi erwin_ve,
I have a early 2008 50 watt ods which I have upgraded to a 100 watt with Mercury magnetics transformers, but I have never been happy with the od sound and the clean sound is not as clear as I would like. I would appreciate it if you could show me some of the mods you did to get that sound. I also use a heritage 2 x 12 cab with  g12-65 speakers.
regards
riverman

Nice sound and playing ;D

Got it working now, one of my FF extensions was preventing it. Nice tone, lovely playing. I have to say I wish mine sounded like that.

E-mail with schematic sent.

Nairbr, Hywelg, Thilo.

Thnx for listening! A "De Gier" stratocaster was used.

thanks erwin_ve for the schematic.

 I will start modding and let you know how I get on.

riverman.

Interesting that someone else's first impression is the same as mine.  (I have the "New OTS 50W" topic from a few days ago).  I know everyone says you need to play these amps for awhile.  Granted I don't have a lot of time on mine, but have never had an issue with any other amps.

How complex are the changes?  I would be very grateful if I could see the schematic changes you made.  Seems like mine sounds like your used to.

thanks
chris

It's a time consuming operation; about 4 hours. If you're comfortable with reading schematics(no lay-out!) you should be fine. Let me know; I can e-mail the schematic.

Erwin's clip sounds incredibly good!

But bad for GAS! Feels like I want another OTS!

The playing is stellar too. Erwin is an excellent gitarist and a great instructor. I know that for fact: he's desperately trying to teach me some twice a month for 5+ years!

And he put me on that OTS fever too!

Cheers
Fabien

Thanks so much Erwin.  yes a schematic would be extremely helpful and appreciated.

Hi Erwin,

Could you send the schematic my way too please?
btw, nice piece of music!

thanks!

Jesse

Erwin, that is a great sound on "335!"

Could you please tell me your settings especially the channel used and outboard gear such as reverb and Dlator etc.

I must have a go at tweaking mine more towards this "purer" sound
Regards
Rog

Thnx!

Settings:
vol 6, bright off, mid(labeled deep) off, rock, treble 5, mid 3 1/2, bass 3. level 3, ratio 3, master 5, presence 6.
Dumblelator( drive 5, in 10, out 3) used with replifex in the loop, set at 170ms delay.
Overdrive channel was used, no PAB.

Let me know if you want a schematic; I can e-mail it.

Recorded with a sm57 into pro tools8 and added a fair amount of reverb in pro tools.

Lovely...message sent :)

Erwin,
i'd love to get a copy of the schematics as well.
thanks, sounds great.
sean

Hi Erwin
great playin and tone! If you get a chance I too would be intrested in a schematic!
:)  :)  :)

Hi Erwin
I would like a copy of your schematic as well, your clips sound great.

 ;D

Erwin, I've just taken delivery of a hrm bluesmaster, would you mind slinging a copy of that schem my way? Jim (at) wheresmyspaceship (dot) com

Thanks in advance, could we call this the 'Erwin mod'?

Schematic sent!

Whoa that was quick, what a good bloke!

Cheers man!

Hi Erwin,

What a nice sound for Room 335, very dynamic.
I have OTS S&M 50W, can it be moded?
It will be great if you can send me a copy of the schematics.

My email address is
Young0828@gmail.com

thanks,

Young

Thnx! Sure it can be modded. However it is a time consuming mod.
Schematic sent!

Very nice clip erwin, great tone, nice playing.
When you have a chance, I'd love to have your schematic.
Email: boatguy57@hotmail.com
Many thanks!
George

Thanks! Schematic sent.

Hello erwin, I'm new to the forum and trying to wade through all the info.

I'm seriously looking at building an OTS and would love to obtain a schematic of this setup.

If you could please send one I would be greatly indebted.

soundperf@comcast.net

Chris

Schematic sent!

Erwin, you don't have time for this! Go to work!  ;D
If you need help to lift that PT, I'll send some Vikings from the cold north!
:chairdance:

Erwin,

Was wondering if you could send me a copy of the schematic.  I'm working on fine-tuning my 100W bluesmaster build.  Much appreciated.

vadavis (at) yahoo (dot) com

Schematic sent!

Hi Johan,

I'm on a tight schedule and not all parts have arrived yet. So only mounting hardware and a little soldering. Meanwhile I'm working out with that superheavy twin reverb PT you sent.  I can feel my muscle growing ;D

Hey there erwin -

Guess what I'd like, please... ;-)

max at maxboogie dot com

Many thanks!
-max

Schematic sent!

Hi Erwin,

That clip sounds great.  Do you have any clips using the clean channel?  I'm still trying to make up my mind on the OTS and I really want a rig which I can switch from OD to clean without too much fuss during a gig.   Maybe this might be a wonderful solution.  Thanks for your thoughts and input.

Best Regards,
Jeff

Thnx Jeff. I have a clean clip but it was before the final tweaking. http://soundcloud.com/erwin_ve/bm-non-hrm-before-final-tweak (http://soundcloud.com/erwin_ve/bm-non-hrm-before-final-tweak)

Erwin,

Thank you so much.  That clean patch sounds nice and warm to me.   When you switch back and forth from OD to clean, do you have to change all of the tone settings to get a good tone?  Thanks again and sorry, I don't mean to hijack the thread.

Best Regards,
Jeff

No problem Jeff! The OD and clean is with the same tonesetting.

Erwin,

Thank you so much for sharing this with us.   It's a wonderful combination.   I sent you a PM, so I don't hijack this thread.   

All the best,
Jeff

Erwin,

     Nicely done man!  When u have time sir.  Cjrod2004@yahoo.com

Erwin,  Very nice!  If you get a chance, please send schematic:

davedouse@aol dot com

Hi Steven,

I have this same problem and I have been fiddling with the Amp (OTS50) for one and a half year, and it still has this strong attack and all the other symptoms you mentioned. I would love to have a way to change the tone to a fluid and bell-like caracter. Is it Erwin who is sending the schematics or does he do the mods himself maybe? Thanks in advance, Lovis  email: lovis.fofrofo@gmail.com

Man Im a little late to the game here.
Could you shoot that schematic my way as well please.
tddwlcx9@gmail.com

Maybe should send to Nik so can get official layout going

The OTS Erwin Mod ;D

thanks
Todd

SRY guys I'm not sending schematics anymore.
I do this mod or a complete built around this mod as a commercial activity.

Hi Erwin,

As I stated in my message:  do you do the mods yourself? Now you do the mods yourself I am very interested. I live in Amsterdam,  I can bring the OTS 50 and pick it up again. When would you have time? How much would it cost me? Thanks! Lovis

PM sent.

Erwin is my new favorite builder. I have an amazing OTS-100 (Ojai mods/FM100) made by Erwin.
Best amp I've ever tried. Hopefully, someday in the future I'll take some pics and clips for you all.
Erwin, how about the cables?  ;)

What do you mean by commercial activity?
Im guessing that means not free?

You never heard of Erwin 'van Weelden'?

... just kidding of course ;D

That's very simple; I got requests for this schematic/mod and then someone else did do the mods for the guy who requested the schematic and get payed. I figured out I could do this myself and get payed.

I also like working out modding requests, like Steven's, and being creative within the OTS design.


PS. Van Weelden is lightyears beyond me...

Ah I see
Sucks that someone stole your idea or whatever. ???
Well maybe this post should be moved to the classified section since this is a place for sharing. ;)
Todd

I can highly recommend Erwin for this. He can translate your tonal prferences/ideas into the technical side of it.
Don't forget to put a 47pf bright cap on the master (with a push pull).
:-)

Hi Erwin,

Looks and sounds VERY cool. Could you please email me your schematic??

Many thanks:

Email: babybearyeah@live.co.uk

If you read a few post's above you will find that he is no longer giving the schematic away. At least that's what I was told when I asked to see it ???

Todd