Menu

Show posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Show posts Menu

Messages - BaronvonStumpf

#1
Hello,

I am a new member. I apologize if this subject has already been addressed in the past.

I am a new guitar player. I just received a Gretsch G5420T, for my first guitar, from my wife. I was looking to buy an amplifier. Then I found a Crate GFX30 in my attic (oldest son is in the Air Force, his amp) abandoned and dirty. I cleaned it inside and out. I energized it and it was nothin except loud squeals and a really bad hum. I tried to find schematics, and I did, after I accomplished my repair of the system.

Apparently, from the forums I visited, the Crate system is notorious for this type of issue. I am a biomedical electronics engineer and I applied my skills to investigate. There were a couple of obvious issues when I looked closely. First, incoming power wires crossed over and touched the speaker wires. I rerouted those and eliminated the squeal. However, I still had the hum and brrrrrrr. Then I used magnetic chokes on the power wires. The rest of the issues disappeared.

The sound is amazing. My son, a great guitar player, could not believe the sound. He originally received the amp from a friend and he said it never worked.

Anyway, I joined this forum after the repair. I thought this information might help some others with the same amplifier. I am impressed by the helpfulness of the other members.


Sent from my iPad using Tapatalk