Compatible replacement for a ceramic wire wound 2.4k resistor

Thread Starter

dltocci113

Joined Jan 9, 2024
10
I inherited an old subwoofer (circa 1999). As a project I am replacing all capacitors and would like to also replace the ceramic wire wound resistors too. However, I am having trouble sourcing a replacement for the original resistor made by Bennic 5W 2K4RJ. There are no ceramic 2.4k resistors of equal size at Mouser, Digikey or Part Express. The part is height:~22mm and ~9mm wide and deep. The leads when bent need to be longer than 22mm to reach the circuit board.

My question is: I believe I can substitute the ceramic for another type resistor but not sure what is appropriate. Need help. <I am a novice at this type endeavor.>

Can I someone advise if I can substitute the ceramic 2.4k resistors with some other type of wire wound resistor of equal wattage and resistance? Can you please provide a link or picture of what you suggest with your feedback.

resistor frontside.jpg resistor backside.jpg
 

LowQCab

Joined Nov 6, 2012
4,305
I can't think of a good reason to replace a Wire-Wound-Resistor,
unless it's been smoked because of some other odd catastrophic failure.

Resistors, as opposed to Capacitors, virtually never "go-bad".
There "may" be some slight value drift over very long periods,
but this is usually in ancient Tube equipment made before the '60's.
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LowQCab

Joined Nov 6, 2012
4,305
But did it fail open because it's under-rated, of "cheap" construction, or because of age ?
It looks like it wasn't because of age.
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MaxHeadRoom

Joined Jul 18, 2013
28,829
The one I showed was just an example, the actual one I quoted was slightly larger and higher value.
Just the HS mounting is the same.
The one referenced in post #2 is a 10W, so should stand up a little better.
If extending a lead, solder the second piece for the full length of the original.
 

Thread Starter

dltocci113

Joined Jan 9, 2024
10
I can't think of a good reason to replace a Wire-Wound-Resistor,
unless it's been smoked because of some other odd catastrophic failure.

Resistors, as opposed to Capacitors, virtually never "go-bad".
There "may" be some slight value drift over very long periods,
but this is usually in ancient Tube equipment made before the '60's.
.
.
.
Thank you. Fairly new to doing a electronic refresh project. I have read similar feedback about low probability ti replace resistors. I may avoid it altogether and just do all the caps. Thanks
 

Reloadron

Joined Jan 15, 2015
7,580
Yes. But would a 2k be sufficient vs. the 2.4k currently in use. There are 2 of the 2.4k resistors.
You got it before I was quick enough to edit my post. :) Not knowing the exact application I can't say if a 2K is close enough to 2.4K. I figure the original design called out 2.4K for a reason. Just don't know the reason. :(

Ron
 

Thread Starter

dltocci113

Joined Jan 9, 2024
10
The one I showed was just an example, the actual one I quoted was slightly larger and higher value.
Just the HS mounting is the same.
The one referenced in post #2 is a 10W, so should stand up a little better.
If extending a lead, solder the second piece for the full length of the original.
Thanks, the 10w is too tall and leads too short for vertical mount unless I add length but I dont want to do that. The 5w is back ordered on every site I have searched. That’s why I am asking what other resistor can be substituted.
 

Thread Starter

dltocci113

Joined Jan 9, 2024
10
So the point of my post is to ask for guidance on what i can substitute for the ceramic 2.4k wire wound existing resistor given all sites with ceramiic 2.4k 5w of the same type and size are backordered for 1-3months.
 

MrChips

Joined Oct 2, 2009
31,088
Basically because I am replacing the caps and figured I replace the resistors of the subwoofer amp board while I have it apart.
I wouldn’t replace the resistors just because you are replacing the capacitors. In fact, I don’t go replacing capacitors just because you feel like doing so.
 

LesJones

Joined Jan 8, 2017
4,227
This thread reminds me of one a few years ago where the thread starter decided to relpace the resistors in a valve (Tube) audio pre amp that was working perfectly before he started . After replacing them it did not work. He had replace some with values up to 10000 times too high or too low in value . He could not read colour codes correctly.

Les,
 

Thread Starter

dltocci113

Joined Jan 9, 2024
10
I didn’t ask for opinions on what I should and shouldn’t do. My question was quite simple.
Just looking for input from more experienced folks on what would be a compatible resistor to replace a Bennic ceramic 2.4k, any similar type ceramics resistor of the same physical size are on 12-16 week backorder. As I write this it occurs I should just reach out to Mouser or Digikey directly.
 
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