Dumb Question

toolbelt

I'm replacing a blown resistor in my RTI4 crossover. It's a 5W 2.5 Ohm axial type (see upper left of attached pic). As these are becoming hard to find, what types are people using as replacements? Based on crossover board pin spacing, an axial type (leads on one end/vertically mounted) resistor would make replacement easiest. Radial types (leads at each end) would create mounting issues unless the leads are long enough to bend one end's wire around to the other end. Or can you lengthen one lead by adding an extension? Or are people switching to thick film resistors, etc. I'm a newby at this so only know the very basics. I know I don't want to by an OE style from vendors charging $45 for what is a $1 resistor.

pitdogg2

Folks stand radial resistors on end all the time. You'll be trimming off one end that you can use on the other end. I strongly suggest you go 10 or 12 watt on the next resistors.

toolbelt

pitdogg2 wrote: »

Folks stand radial resistors on end all the time. You'll be trimming off one end that you can use on the other end. I strongly suggest you go 10 or 12 watt on the next resistors.

I had thought about standing them on end but noticed the leads from the top end weren't long enough to wrap around to reach the board, until you just gave me my eureka moment of how to lengthen that lead and where to obtain an extension. And yes, it looks like a 10w axial resistor has about the same footprint as a 5w radial resistor, if installed on end. Bravo to you.

pitdogg2

What brand resistor are you looking at using?

toolbelt

pitdogg2 wrote: »

What brand resistor are you looking at using?

I'm just going with the generic brand as per the original. I've also heard I can run two 5 ohm resistors in parallel to get 2.5 ohm resistance. Other than Amazon, the shipping charges to Canada are like $20 and up. I've tried local component houses without success. I want a plug n play solution, within reason. Hard to believe it's so difficult to find such a simple "used-to-be inexpensive) component, although I believe radial resistors were phased out of mainstream use a few years ago.

invalid

Try parts connection, they are in Canada

pitdogg2

Parts connexion
I was going to mention that earlier but I diddled around on their site today and I didn't see anything that he could use.
He's already voiced he doesn't want to put any money into these so therefore cheap ceramic it is

toolbelt

pitdogg2 wrote: »

Parts connexion
I was going to mention that earlier but I diddled around on their site today and I didn't see anything that he could use.
He's already voiced he doesn't want to put any money into these so therefore cheap ceramic it is

It looks like I will have to go with Mills MRA 12's, and yes, PC does have the 2.5 and 3.3 ohm version, in stock ($15 each). I haven't pulled the other crossover yet, but at the bare minimum I will need one set of 2.5 Ohms, and worse case, a second set of 3.3 Ohms. So far, these 20 yr old bookshelf RTI4 repairs are likely setting me back almost $150 to repair (including 2 tweeters and 1 woofer) and at least one set of resistors. Considering I originally bought them as a store demo for $120, it's hard to justify. I originally just wanted a quick fun project and I don't even have a need for them. lol