Cerwin-Vega DX-9 Crossover Inductors

[laatsch55]

Having hell finding the right inductor. The 2.4 MH'ers had come loose at one time and unveiled a wee bit. How critical Is the wrapping?
These are round iron core and the missing one is point(.) 6 mh.
The wire looks to be #20 #22.

 

[George S.]

I think I'd unsolder them, then carefully unwrap and rewrap them. Maybe secure the end wraps with a little nonconductive epoxy so they don't creep apart again. Do you think heating expanded them?

 

[laatsch55]

They were originally in black heatshrink...

 

[laatsch55]

I would like to know what Mouser calls em...power inductors, rf coils??

 

[Gepetto]

RL-1256_0.pdf (rencousa.com)

 

[laatsch55]

Is a 1 uh close enough to the .6?

 

[mr_rye89]

If it were mine to fix:

https://www.parts-express.com/Dayto...AWG-Air-Core-Inductor-Coil-257-040?quantity=1

 

[AngrySailor]

Having hell finding the right inductor. The 2.4 MH'ers had come loose at one time and unveiled a wee bit. How critical Is the wrapping?
These are round iron core and the missing one is point(.) 6 mh.
The wire looks to be #20 #22.

https://solen.ca/en/categories/std-inductors-20awg-(0-80mm)/products

 

[AngrySailor]

Some reading I did a long ways back specified air core inductors had desirable characteristics for crossover application other than being more expensive($7 ffs) and larger physically. There’s a 0.61mH near the top of the page I posted.

 

[nakdoc]

Air cores do not saturate at high power levels = lower distortion. If you have an inductance meter, you could unwrap a 1uH coil. Removing 1 wrap to solder the original coil in will not cause problems, because all the parts are 5-10% anyway.

 

[laatsch55]

Thanks bud
...

 

[laatsch55]

Where do you get those Renco Joe? I've looked...they usual places don't carry em...

 

[wattsabundant]

Parts Express Selector Table

 

[laatsch55]

Thanks Don...

 

[Gepetto]

Where do you get those Renco Joe? I've looked...they usual places don't carry em...

Direct from Renco Lee...I have used them in switching power supplies in the past.

 

[laatsch55]

Thanks Joe!

 

[laatsch55]

The air cores are a bit large. So I added another deck. Tapped the plastic posts in a 4-40 , and now have plenty of real estate...

 

[laatsch55]

Got both done...mount components tomorrow..

 

[laatsch55]

Done..

 

[laatsch55]

Changed out the 30uf/100volt and 100uf/100 volt non=polars. The 30's were reading in the low teens and the 100's were inb the 120's....