The Behringer DEQ2496 has parametric EQs. I set it based on this thread on the 'fi
link
I am also interested in building a standalone clone of the stock filter in case I ever sell these.
If anyone has an inductance meter handy (that can measure what may be a LOW value accurately) you are welcome to my K1000 PCB's in the name of science.
One of them didnt survive my re-recabling efforts... and I do the notch digitally now.
It is very possible for a speaker to blow an amp.
Check the web to see if you can find the "impedance VS frequency" response graph for the speakers your parents have. If it dips much below 4ohms anywhere some amps will go poof. If it dips below 2ohms many amps will go poof.
Regarding cutting in and out: I dont know. Id try to clean the binding posts first.
Solves ooh so many problems.
Replace the drivers & cabinets with horns? I like!
For a longggg time i did not flux, I just used fluxed solder.
I bought some a few weeks ago, and will never go back. EVER! It makes making lots of things sooo much easier. My only complaint is that the little needle tip clogs up too fast.
mcmaster carr has dimensional tolerances for most of their bar stock.
A quick check of the 1/2"X?? got +/-0.014" as a worst case on the 1/2" dimension which is just under 1/64" (0.015625").