Help! I've got a hum in my new AT 440 MLa
Help! :cryin:
I received my new Audio Technica AT440MLa in the mail yesterday. I spent the evening mounting and adjusting. Sounds wonderful! I got excited and started to re-organize my vinyl collection this morning.
So there I was, on the floor pawing through my collection with tone-arm lifted above the end of a spinning record (too involved in my sorting efforts to change the record), when after a few minutes, it dawned on me. The system is humming!
I traced the hum it to the cartridge its self. How did I do this you ask?
There is no hum if:
- I remove the headshell/cart. from the S-arm entirely.
- I swap it with a different headshell/cart.
There continues to be a hum when
- I swap out the little leads b/t cart and headshell
- I mount the 440 on a different headshell
- I remove the stylus from the cart body
The hum gets louder when
- I turn the TT motor on. (It a direst drive Pioneer, photos here and here)
- I swing the tonearm closer the my amp.
:mad2:
I searched the archives and seems that hum is something that happens. What am I to do? Did I get a defective cartridge?
Any thought would be appreciated.
Thanks, Brett
:thumbsup: