Hello... I'm new on here and have a problem that has more than likely been discussed before....
So, at the risk of frustrating the "old timers" on here, here goes.
I have an older F1500 and am experiencing 2 problems, which makes diagnosing even harder.
1st: there is a loud, ear piercing 400 hz wave as soon as sub is turned on. It doesnt matter if there is a signal to it, same high pitch sound.
I have hooked my woofer up to a known good F1500 amp, and there is no high pitch noise (made me initially believe it was an amplifier issue.)
2nd: When I hook my amp to a known good F1500 driver, no high pitch noise, but the woofer jumps around.
It is actually possible that I have an issue with both my amp AND my driver!!!
I currently have 3 F-series Velodynes, 2 of which work. Between my friends and myself, there are 6 Velodyne F1500 subs, with only 2 working correctly. The other 4 have issues. Velodyne says there are no replacement parts available. My buddies own these because of my encouragement back in the day. But I gotta say, "brand loyalty" is going downhill quickly.
Any ideas on the high pitch squeal?