Help identifying these resistors from a speaker crossover

Those aren't resistors. Maybe some sort of self-resetting circuit protector.

Mark Z.

Mark,

Thanks. I'm hoping that whatever is sticking out of the potting is the part that is the least robust and most likely part to need replacement if the speaker gets driven too hard. I'll call the mfg. tomorrow.

I've heard of resistors gett>

I think they are resistors. I found the manufacturer..Caddock high performance resistors.

Can't find these part numbers (MDN0178 and MDN0509) on their webpage but I'll call them tomorrow.

They are resistance with 1% tolerance, take your speaker to electronic shop and do resistance measurement test, it seems 4.2 OHM resistor is burned.( OPEN ). Check your Non-Polar Electrolytic capacitors too with ESR meter.

Cyrus®

I was wrong again, eh. Never seen resistors like this, though. We live and learn.

mz

V.H.-

The 3.20 resistor is connected on the right side to a terminal that appears to have two other wires connected. The 3.20 appears to be the one on the bottom of the stack. Many times I've seen a similar situation where the one on the bottom did not get soldered. At first it works because the wire is touching the terminal, but over time an open connection develops.

Fred

As you have discovered, these are Caddock Kool-Tab power film resistors as shown here

The value on your resistors look to be 3.25 ohms and 4.2 ohms respectively. However, since these are not standard values made by Caddock, they are OEM values specified by the crossover/speaker manufacturer, therefore they will be given proprietary part numbers.

The 4.2 ohm unit appears to have a similar device mounted in parallel underneath so you will need to investigate that one further.