Ampeg Svt 4 Pro

[PrimoCapone]

Hello, can any one help me?????
I own a Ampeg svt 4 pro, when i conect it to amixer, from the line out, the only thing i can hear is a BUZZZZZZZ sound and some times, i can hear a radio station,,,,,whats hapening what can i do......thx

[Bassman3]

4pro

Hello, can any one help me?????
I own a Ampeg svt 4 pro, when i conect it to amixer, from the line out, the only thing i can hear is a BUZZZZZZZ sound and some times, i can hear a radio station,,,,,whats hapening what can i do......thx

Depending on how old the unit is, the original version used an op-amp for the balanced out. The newer ones use a balanced transformer. The early version that used transformers had a 4:1 ratio, we found this to be too low of output, so it was changed to a 1:1.

If yours has the balanced output transformer & is an early version, you can order a new one from Loud Technologies.
The part # is 94-025-21