diytube.com

Hi guys

I'm assuming a single power tranny could be found to make this a stereo or rather dual mono in one chassis kind of build. Has Shannon or anyone determined which tranny (Hammond) would fit the bill?
Is their a parts list and/or manual posted yet ??? ( eventhough I guess the Eiclone hasn't been officially launched).

Thanks

The "standard" Eiclone power trannies would be 350-0-350 @175 mA, to
400-0-400 @ 20 mA, plus 5V@ 3A and 6.3V @ 6A, for each channel, Hammond 273BX, 274BX or 278X (or the costlier 300 series with the "universal" 100-120/220-240 VAC primary) two Ikes on one chassis would require at least 350-400 mA for the HV, and 4 or 5 amps for the 6.3 VAC filament (presuming that you are not using tube rectification).

Two transformers that are listed on www.tubesandmore.com are the
Hammond 278CX (378CX) which have 400-0-400 @ 465 mA, and 6.3 VAC at 6A (this may be insufficient filament current), and the One Electron BFT-1B, which can deliver 385-0-385 @ 340 mA, and two 6.3 VAC filament windings, one has 9.5 A, and the second has 4.0A, the 5Vwinding has 4 A
available. THis is a huge and heavy transformer, costs about $130.
My own "best bet" would be to go with two of the power trannies mentioned at the top, as they would cost the same or less than the BFT-1,
or perhaps, the "Toroidal Transformers" mentioned elsewhere in this forum might work. shannon is still the expert on this topic, let's see what he has to say here. :faroah: :notworthy: =D>

/ed B in NH

Ed is on top of things!

Yes, those three big trasnformers are the ones in my sights. I've purchased the Maryland Toroid and the big Hammond, and was just looking at the One Electron transformer yesterday. Unfortunately, testing my stereo PTs has been slipping due to the fact I LOVE MY IKES! I can stand taking my test pair from my family room back to the bench where they belong.

Hmm, also the cold has really put a damper on the diytube lab. Those gin and tonics can only keep the monkeys warm for so long.

:drinking: :animalmonkey: :animalmonkey:

Shannon

Ive seen "dual mono" amps on one chassis, two separate power trannies, the only thing in common is the chassis and maybe the power cord.

I'd just as soon go with 2 monoblocs, less weight to heft around if you havew to move it or work on it. If things get too iron-intensive, another route is separate power supply and amp chassis.

darn! I just dropped another 1627SE on my big toe :twisted: :ahhhhhhhhhhhhhhhhh:

/ed b in NH

Hi guys,

This is my first post to your forum, altho I sent Shannon a missive regarding this topic. As soon as I get settled in my new shop I'll post all the particulars, but for now...

I'll be taking orders for a drop-in replacement hotrod version of the original HF-87/89 power transformer soon. It has 185V@1A, 75@10mA, 18V@3A, and 6.3V@6A secondaries and a 120V primary tapped at 116 and 124V. The 18V winding is to run the 1st audio and PI tubes with DC on their heaters. It sells for around $155.00 + S/H. Output transformers for the HF-89 (32034 emulation and clone) will also be available, but I haven't priced them yet.

Eric in McKinleyville

Sounds like two trannies it is .... I would like to go for one chassis though however, all that weight (2 pt's and 2 ot's) on a hammond chassis isn't going to cut it without reinforcement. OK, maybe 2 chassis in one wodden enclosure .... maybe the best plan ..... :D
I can't afford any of it right now so plenty of time to think on it ....

Thanks guys

ps ... what is looking like the least expensive yet completely ok Hammond PT for the eiclone?

pss ... The Eiclones are looking like dedicated amps for my phono set up. The extra power of the EL84's will be a boon over the 84's of the 35 and my Scott 299B. Right now, a hybrid Jolida 100 x 2 is serving the phono duty feeding a pair of DIY MTM's about 90 db eff. It's doing a nice job but more power than I need and the EL34's should be perfect. The phono stage is a recently build Hagerman Cornet (42 db gain) which I absolutely LOVE. Income tax money coming soon and of course, I would sell the Jolida come the time.

DG wrote: ... what is looking like the least expensive yet completely ok Hammond PT for the eiclone?

The Hammond 274BX - $54 each at Angela. That's what I've been using. The big Hammond (278CX) is $74, though - so you might wait 'til I check it out. It'll have higher B+, too, so with some 6550/KT88s it may be a barn burner.

Shannon

I got a couple Ike boards from Shannon and have started planning the project. I really want to push the envelop with these. I have very inefficient speakers that can handle lots of power. This driver circuit is amazing. I am going to have tube recitified monoblocks (probably using Mullard CV378's), and 600 +V on the B+. I should be able to squeeze a 100 watts from a pair of KT-88s or KT-90s.

This is the Hammond power trannie that I am planning to use,
282X 273VA, sec. 500-0-500, DC ma 200, Fil.#1(rct) 5.0v @ 3a ct, Fil.#2(htr) 6.3v @ 6.0a ct.

The output trannies will be,
1650R 100W, 5000 ct, 4/8/16 ohm, max. DC per side 318mA.

JT

separks wrote:

DG wrote: ... what is looking like the least expensive yet completely ok Hammond PT for the eiclone?

The Hammond 274BX - $54 each at Angela. That's what I've been using. The big Hammond (278CX) is $74, though - so you might wait 'til I check it out. It'll have higher B+, too, so with some 6550/KT88s it may be a barn burner.

Shannon

So Shannon, the 278BX may turn out to be good for BOTH mono's or just one?

DG wrote:

separks wrote:

DG wrote: ... what is looking like the least expensive yet completely ok Hammond PT for the eiclone?

The Hammond 274BX - $54 each at Angela. That's what I've been using. The big Hammond (278CX) is $74, though - so you might wait 'til I check it out. It'll have higher B+, too, so with some 6550/KT88s it may be a barn burner.

Shannon

So Shannon, the 278BX may turn out to be good for BOTH mono's or just one?

The Hammond 278CX has plenty of power capability for two monoblocks (454VA). It would be a perfect candidate dual tube rectifiers, but alas, no 5VAC tap. Feedback on this, sooner than later.

Shannon