palmer Transformers

[Salvatore]

Just stumbled onto this.
http://www.palmer-germany.com/65-1-pmt02.html

You can get this in Europe for around 45.00 euro's, not to expensive I thought.
Wonder if they are any good.
Would they be ok if you turn them around and use them for a mic preamp ?

Just looking around, any other cheep 10:1 contenders ?

 

[edanderson]

if they work as a DI, then yes they should work as a high ratio mic input.  they may not work really well, but for the money they could be okay.  the OEP A262A3E can do 1:13 ish, and i think amplimo.nl has a 1:15.

ed

 

[Salvatore]

Thanks for responding edanderson.
Living in the Netherlands, those 1:15 amplimo TM3's are easy for me to get pretty cheep (around 35 euros).
The reason I asked though, was cause I want to make 2 ore more mic pre's, and the NYD's Mila and the Hamptone jfet (the fetboy, ore the pre in the hamptone article) schematics caught my eye.
Those schematics ask for 1:10 transformers though.
On the other hand, NYD's one bottle preamp probably will do fine with that TM3, something to ponder..

 

[edanderson]

though the original hamptone jfet article mentions a 1:10, the actual kit ships with a 1:8, and many users end up reconfiguring it as a 1:4.  personally i would shoot for a 1:5 to 1:8 range input for the hamptone circuit.  the OEP i mentioned will do 1:6.45, and i think that is what is used on the popular FETboy pcb.  the amplimo 1:5 would probably also work well.

the 1:15 would be a good match for the MILA.  i believe one reason dave spec-ed a 1:10 is that higher ratios are difficult to find as stock parts.

ed

 

[smallbutfine]

On the very cheap and easy-to-get side you can try the neutrik transformers in europe...i.e. the NTE 10-3 that you can get fast at Thomann in NL...but it has no shield and from the saying of others they overload very fast. Even the NTL/NTM more expensive series does harm audio besides it claims to be for studio use...
It may be an alternative for experimentation...

Kind regards
Martin