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Iteachstem

B&C DE10 upgrade/retrofit for KLF20/KLF30 K-79-K

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 I wanted to document my upgrade process for those of you who wanted to take the tinkering/budget approach to installing the B&C DE 10 driver into your KLF20/30 etc. speakers.  Feel free to ask any questions.

 

I purchased these drop in fit drivers for $36 plus tax on ebay:

https://www.ebay.com/itm/2-Paudio-PHT-409-Horn-Tweeter-Supertweeter-Klipsch-replace-K-79-K-75-K-76-K-84/372632527011?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649

And the B&C Drivers:

https://www.parts-express.com/bc-de10-8-1-mylar-horn-compression-driver-8-ohm-2-bolt--294-600

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Then, I disassembled them as you will only use the horn parts.

 

 

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Remove the disc and cut out, dremel, sand, etc. these center phase plugs according to the pictures.  The B&C Drivers already have a phase plug inside the housing.

 

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That concludes the modification of the lens assembly. 

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Next, I bought some bolts and washers to mount the B&C driver to the horn.

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...and assembled the unit to test fit everything...

 

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Then, I mounted the horn...

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and then align and attached the driver.  Do not over tighten.

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and connected the wires. (You need to cut the OEM connectors off and replace with larger ones)

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Final picture:

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Cheap horns about $40

B&C Drivers about $100

Misc. parts less than $10

 

I hope this was helpful!  So, for about $150 you can have a great upgrade to your speakers!

 

 

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If anyone out there doesn't want to do all of the work, I have an extra set (Brand new) I built that I will sell for $175.  Pick up in the Western Burbs of Chicago. 60511

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