frommerstop

Dear Frommerstop. Could you help me?
My name is Fabio. I inherited a WAMM 7. Unfortunately, the volume of the ESL doens't work more. The volume is low on both L&R speakers.
After some measurement on the electronic board, I concluded that I need to replace the step-up transformer.
My problem is, I don't know specifications of them (ratio?).
Do you know which transformer model for this ESL?
The best regards!!!!

I have a question, I just took my BES speakers out of storage and one was humming.I googled it and found that about 2 years ago someone posted a couple of questions about BES speakers, you mentioned that the humming could maybe be fixed by re-gluing the sound board.Ive taken the back and front off these and not sure what to glue or what type of glue I should use. the other speaker sound good.