Current Transformers for a D'Lite style build

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turtle441
Posts: 6
Joined: Thu Sep 18, 2014 4:52 pm

Current Transformers for a D'Lite style build

Post by turtle441 »

Greetings all. I'm new to this particular board. Been building amps for a few years, but just getting ready to dip my toes in Dumblish waters.

I'm moving towards building a D'Lite style build. Initial plan was to build something closer to a D'Lite 22/33. But, I'm somewhat intrigued by adding in the option of utilizing EL-34's if desired. To be honest, I need a 40-watt amp like I need a hole in my head, but I've liked the sound of some EL-34 based ODS's, so I'm interested in keeping that option open. (Knowing that I'm going to have to mess with the bias circuit some if I go in that direction.)

With that in mind, I'm trying to figure out what transformers to get. It looks like the PT requirements are fairly straightforward. 325-0-325 with a bias tap and appropriate current for the heater string. Looks like there's a number of options out there that will get me there. Big question is recommendations for an OT. It looks like in the past brown note went with a 4k/8k primary for the 22/33, 4.4/6.2k for the 44. Anyone have recommendations for current production OT's that have worked well for these, since Brown Note's no longer doing their kits?
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xtian
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Location: Chico, CA
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Re: Current Transformers for a D'Lite style build

Post by xtian »

The ODS Lite build I did is still one of my favorites! Here's my build log: https://ampgarage.com/forum/viewtopic.php?t=27657

Sorry, don't have a recommendation for the OT, but I will urge you to use a pair of EL34s.
I build and repair tube amps. http://amps.monkeymatic.com
dcribbs1412
Posts: 1386
Joined: Wed Jun 11, 2008 6:56 pm
Location: Arizona Desert

Re: Current Transformers for a D'Lite style build

Post by dcribbs1412 »

My 2cents
Marshall 50 watt OT or a Fender 35 watt Vibrolux OT( I think the BN OT was similar to)
Not sure if you are located US or not, Cedist has both around 75.00
I would suggest the Bluesmaster circuit with EL34's and the Marshall OT.

D
rootz
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Joined: Sat Jan 03, 2009 12:24 pm
Location: Delft, The Netherlands

Re: Current Transformers for a D'Lite style build

Post by rootz »

Can I add another 2 cents? Brian Wallace/Marstran has some beautiful transformers like the 784-139 clone, that was used in the 50 Watt plexi. I used a 784-128 of him in a JTM50 clone I did and it was (and still is) miles better than a Mercury Magnetics. Great vintage feel to them, the mercury's sound too hifi to me.
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M Fowler
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Re: Current Transformers for a D'Lite style build

Post by M Fowler »

When I built my D'lite into a blank custom Princeton Reverb chassis I used JCM800 PT and OT Heyboer but ClassicTone is just as good or others Hammond, Marstran, Merren, etc.

Mark
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