Power transformer identification for Tone King Gremlin

[janou195]

Hello,

I am working on the layout of the Tone King Gremlin. Mine has the PT of the attached picture, but I can't find its specs on the web to get an equivalent one... For information, the OT is a "Classic Tone by magnetic components inc", but I do not even know if the PT is of the same brand.

I would be great if some could help me to identify this PT!

Many thanks,
Olivier (France)

[uki]

This will probably help,

[Latole]

40-17425 seems to be a number of Magnetic transformer / Classic tone to rely on this site;

https://www.tubedepot.com/products/classictone-output-transformer-40-18007


Update; further research seems to show that Classic tone transformers ( all ?) start with 40-18 XXX
So 40-17425 = ??

[tdvt]

Hoping you can find the specifications using that number.

Sadly, Classic Tone is no longer in business, they closed up shop during the pandemic.

[Latole]

Hoping you can find the specifications using that number.

Sadly, Classic Tone is no longer in business, they closed up shop during the pandemic.

I do a long search ; nothing with this number

[bmccowan]

I have a spreadsheet with all the ClassicTone model numbers. All start with 40-18xxx. But I would guess that was made by Magnetic Components/ClassicTone - maybe special order for Tone King?
According to Tone King, that amp is 1- KT66 operating at 5watts (pretty low for a KT66) but they say a 6V6 can be swapped in. So it would seem logical to go to the Hammond catalog and look for one of their PTs that would meet the requirements of a Vibro-Champ. If they have one with more than one secondary voltage option that would allow some flexibility.

[Lectroid]

That part number  166-1631  sure looks like a US mfgrs part ID.  The 166 should identify the company but I don't have a company using 166 on my (admittedly old) list.   

[tubeswell]

The attached spreadsheet might help i.d. if itis ClassicTone or not - but the links are dead now I fear. (I downloaded some of their OT datasheets before they shut up shop but don't have much info on their PT range)


Edit: looks like your number aint there sorry. Probably because it may've been a special spec for Tone King that will forever remain a closely guarded secret (so try contacting someone at Tone King https://www.toneking.com/contact/)

[NewYorker]

Confirming - 166 is (was) the EIA code for MCI. 

https://www.ecianow.org/assets/docs/EIAStandards/1.7.7_1994%20EIA%20Codes.pdf

The 1631 data code indicates yours was made during the 31st week of 2016.

I just remembered I have an amp here with a MCI PT and OT, EIA/Date code 166-0023.  From my notes:

"166" indicates Magnetic Components, Inc., Div. Of Marvel Electric Corp., Schiller Park, IL

Part number 40-16619, 40-16620.  (For Mesa Boogie)

Ed

[Willabe]

"166" indicates Magnetic Components, Inc., Div. Of Marvel Electric Corp., Schiller Park, IL

Yes, Classic Tone was in Schiller Park, IL.

They were an old company. They did all the old iron for Gibson amps. They still had all the spec order sheets, but couldn't match the order sheet numbers to the amp models. Gibson used different numbers for the order sheet than the amp model. 

[janou195]

Dear all,

I missed some of your kind answers (I haven't been noticed by email... don't know why), many thanks for them!

I just sent a message to toneking to see if they can help me with that. Else I will measure the voltages!

[janou195]

Hi,

I finally got a spec sheet which is attached to this post.

It's not very clear to me with this how to wire the primary to match my wall voltage. Do someone know how to figure it out?

Also at the secondary it is written 580VCT. I assume that it means 290-0-290, but is it actually this?

Many thanks!

[tubeswell]

If you’re in the US, both primary windings will be in parallel. If a euro-mains country, then the 2 primaries will be in series. The different taps on each primary are for adjustment to suit the wall voltage,

[mresistor]

You are missing the 2nd page which is hookup diagrams   what counry are you in and what's your wall voltage   contact them back for the hookup diagrams.  I can show what the look like
for the 40-18085 pt   need to scan it first then will post
yes 580CT    ct = center tap   so  580 x 1/2 = 290     290 per side

[mresistor]

This is an example of hookup diagrams for the Classic Tone PT 40-18085    IT MAY NOT WORK FOR YOUR PT!