Magnetics Corp

[jerrydyer]

I built a 50 watter with both the classic tone OT and PT 50 watt marshall type setup. its a vox ac 30 preamp into the typical 2204 power section but using KT66 and left the solid state rectifier. Sounds really good. LOTS of sustain for a clean circuit. I did do the whole tube mod like a matchless Lightning and others like it, shared plate and cathode. bridged inputs. I used WIMA .1 output coupling. Mallorys in the preamp. 220k plate on the fisrt tube. I used slightly different value on the PI by mistake. 820 ohm and 10k tail. ..I have one I am bringing to the show with the dumble PI it was I think 820 ohm and a 22k tail. Mark has an amp where he put pot in there and it takes a second but you can hear it change as its re biasing. He might bring it its a KT88 amp

[Mars Hall]

Everything I've heard, has been nothing but good about these transformers, and the price sure don't hurt my feelings.

[Flames1950]

I worry a little about their 100-watt Marshall PT's, which show as rated for only 290mA on the high voltage winding. But I'm totally happy with their Fender-style offerings so far, and I've used a couple of their JTM45 PT's with no problem (can't safely run a 5U4 rectifier in place of the GZ34 if their 2A 5V rating is not too conservative.....)

[ClassicTone]

Hi Flames,

I want to address the issue about our JTM45 PT. The wire size used on the 5V winding is the same as the 6.3V winding so it can safely handle the current for a 5U4 rectifier.

[ClassicTone]

I also want to address comments on our ClassicTone Marshall style 100W power transformers. Essentially, our upright mounted 100W PT 40-18024 have been on the market for over 8 years without any problems. They do run a bit hot but they are built to last a long time and perform well. We have produced about 2000 pieces of these since 2002 with only 1 known reject. They are good transformers. In general, these are built to withstand as much as 264 F degrees but are running at almost half that temperature when the amp is used continuously at high volumes (which is rare). They also use a specially formulated varnish as well as a special military style varnishing process that helps our transformers last longer. These are built to withstand running at hot temperatures and are in no way inferior products.

See our 40-18024 per the following link:

http://www.classictone.net/40-18024.html" onclick="window.open(this.href);return false;

By request and for those of you who are still uncomfortable with the hot running nature of the part, we have actually improved our 40-18024 with the upcoming production run and it now features two wire sizes heavier for about a 20 F degree cooler running (at the same price as well!).

Also, for those of you who want the best, cool running versions of 100W Marshall style transformers, we have recently introduced our 40-18053 which features the best, cool running M-6 steel as well as a flux band for added performance. We also just introduced a laydown style version of the 100W Marshall style transformer with M-6 steel and flux band as well. Please see links on these below:

http://www.classictone.net/40-18053.html" onclick="window.open(this.href);return false;

http://www.classictone.net/40-18046.html" onclick="window.open(this.href);return false;

As you can see, you have many options from us for Marshall style products and other types as well. We will have many more on the way and are open to suggestions and ideas from this forum to both improve our products and for new product offerings. All of our product are produced right here in the Chicago area and we have been producing amplifier transformers for many known large amplifier manufacturers as well as smaller boutique amp guys since the 1950s.

[Ray]

I just purchased, not too long ago, both the 100w 18024 PT and the OT for my 93 SLP reissue, and all I have to say is after Mecury and Heyboer and others...

These are by far the best sounding, best built trannies I have ever seen or heard. OUTSTANDING tone! Just by chance I started searching the web for tranies, since the current state of the Metro store, and came upon Magnetics Corp site, and was sold almost immediately. The price is unbelieveable too, I don't know how you guys do it, but don't stop.

What I would love to see is the 18024 and the 53 in possibly a 400B+ on the plates with the tubes installed option instead of the 460B+. Maybe this would have to be a special order, so that's ok, but this would be my suggestion....

Ray

[ClassicTone]

Thanks Ray! We appreciate your business and your feedback!

Our great pricing and quality is a result of 60 plus years experience in the transformer industry. We produce our transformers very efficiently and purchase our raw materials in bulk from mostly reasonably priced and good local sources as well!

[Flames1950]

I'm glad this discussion came up.

Wasn't really trying to be negative or anything above although it kinda came across that way; based on the printed specs I had a few concerns is all. I'm glad that the specs are pretty conservative after all, because I can actually afford to keep building amps using the Mag Comps trannies, and I've had very positive experiences with the ones I've tried so far.

[Mars Hall]

I have a custom wound MC PT in my 5F6-A build. I found this amp on ebay. I had originally planned on doing the build myself but this built chassis was everything that I wanted for only a few more dollars than what the parts would have cost me! During my original quest, I looked into the standard offerings from MC for a 5F6-A build. I was concerned to find that the PT had higher B+ than an original spec PT.

I can only assume the reason being to have a PT that will fit more than one application. The custom wound PT this guy had MC make is just right for this build. I never had the notion to ask about a custom piece like that, thinking the expense would outway the convience.

[Roe]

hot running 100w PTs might be a good idea if it contributes to sag. as you might know, the 100w marshalls run the el34s too hot if you look at the load lines (with a 1k7 Z the voltages should be 420v, not 490v like it was). however, the original PTs sagged alot (100v), something which makes it possible to avoid redplating).

I'm gonna try three of the magnetic trannies now: the new ac30 OT; a twin OT; jtm45 PT.

[Flames1950]

hot running 100w PTs might be a good idea if that contributes to sag. as you might know, the 100w marshalls run the el34s too hot if you look at the load lines (with a 1k7 Z the voltages should be 420v, not 490v like it was). however, the original PTs sagged alot (100v), something which makes it possible to avoid redplating).

I'm gonna try three of the magnetic trannies now: the new ac30 OT; a twin OT; jtm45 PT.

I've got the 4/8/16 version of the Twin OT in my 100W Fender build -- liking it a lot!! I've used two of the JTM45 PT's already too, in the two Park-type 45's I've done, with no problems. Plus I'm happy to hear that I can use 5U4 rectifiers if I choose, since they're far cheaper/more plentiful in vintage glass than GZ34's.

[ClassicTone]

Thank you all for the kind words!

For the record, Magnetic Components, Inc. is actually the name of our company.
ClassicTone is the name of our vintage constructed amplifier transformer line we offer.
So we refer to it as ClassicTone By Magnetic Components, Inc.

Ah...What's in a name anyways?

Also, I would like to give some details on our upcoming Vox vintage style AC 30 OT that was mentioned here along with the PT and choke. The OT and PT will be available by the middle to end of October. The vintage style AC 30 choke is available now. Both the AC 30 OT and AC 30 PT will have removable covers so they can be laydown mounted like the originals or vertical mounted for the DIY amp build guys as well. The vintage AC 30 OT also has the addition of a 4 ohm tap along with the 8 and 16 ohm taps to make this a much more versatile transfomer than the original or other offerings currently on the market. I am pretty excited to bring these new Vox style offerings to our product line which also includes Marshall, Fender and Leslie style transformers.

[jerrydyer]

yeah
I dont care that mine runs hot it sounds great. I feel confident using them I have one at the amp show with all Magnetic Corp trannies if you all want to come play it

http://www.ampshow.com" onclick="window.open(this.href);return false;

[gldtp99]

I've been using iron from this company for yrs, both Marshall and Fender types--- chokes, too---i always thought these were great sounding units----even back when the prevailing online "wisdom" said that only iron from a certain California company (hi $$$) was to be considered as high quality and the "USA House Brand" units from AES and Triode were looked down upon as being cheap or substandard.
I'm glad that Magnetic Components has changed their marketing to be more easily available to us and also now offers expanded model options for this quality iron.
Satisfied long-term customer here----and yes, i still sometimes use Heyboer, Marstran, Mercury Mag, etc in some builds/services------- but most often i use Magnetic Components iron.................gldtp99

[Roe]

what kind of plate voltage do you get in jmp100s - 490v?