tajohns34

Rebuilding A Set Of Polk Audio M1S

6 posts in this topic

This is my first post, but I thought I would share this process. I have a set of Polk Audio M1's that I was using for my side channel surround speakers. I just moved and I hadn't installed them yet. I went to get something off a shelf and they fell off, and of course the plastic housings shattered. They were beyond repair. However, all of the Guts were in good shape. I considered building a set of custom boxes, or just using the 4.5 drivers as mid ranges in something else. Then another Idea occurred to me. Why not use something pre-made? There is a Goodwill near me and a junk shop. I know they both always have some kind of cheap speakers that I could put the good Polk speakers in. So I hit the Good will first since it was closer, and I struck gold.

I found a set of RCA RP 9316 speakers for $4, here they are
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No finished pics? Nice job recycling those speakers though! How'd they sound after swapping them to the new enclosures?

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Okay,  So I finally got these finished.

 

Here is a picture of the 2 speakers,  the one on the bottom shows how the layers come apart.

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First thing I did was pop the RCA logos off

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Here are the 2 emlems side by side.  The RCA one has 2 legs and the polk only has 1.

 

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I drilled a hole in the center of the 2 and the polk logo fits fine. (sorry about the blur)

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Behold the awesome 3 watt RCA speakers (that don't work)

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Next to the polks (I found out later that the screw holes didn't quite line up, but the self tapping screws went in just fine.

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I took the dead RCAs out and cut a hole in the back for the speaker terminals

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Time to pry them apart,  the scredriver left a little mark on the edge but once they are back together it wasn't so noticable.

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soldered the wires to the connector then fed them through box.

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ready to go back together

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This is where left them for a while. 

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since I finished them I have added tweeters and new terminals.  I'll grab some pictures and post them later tonight or tomorrow.

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*Update*

 

I didn't like the factory terminals with these boxes.  So, I grabbed a set from the local audio shop.  The holes were cut just a little too big, that is why I used the duct tape.  It isn't structural it just keeps the air from leaking out.

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I used hole saw to cut the hole for my cheapie ebay tweeter.  I used the center of the hole saw bit to line up the tweeter. 

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Even though they are cheap tweeters they do add a decent high end to these.

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That's what they're for!  Did you use a crossover of any sort?

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