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MoPhoX

Model Seventeens

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MoPhoX    0

Hey folks, a couple weeks after I picked up the elsewhere mentioned AR5s, i noticed a neighbor had a bunch of junk on the curb. That's where I found the Model 17s, ready to be thrown away. Took em home and they were in great shape (much better than the AR5s). I have them sitting on top of the Acoustic Research AR11 Hi-Res floorstanding speakers and and running both on A/B speakers from a Onkyo TX-DS595. Paired with a simple sub, they sound great. I used to use the "All Stereo" surround setting that uses all speakers but I am preferring the A/B with the KLHs. I have the Hi Res series: two AR11s, two AR17s, and AR2C center. 

Quick pics are below. I have only one KLH badge for the very dated looking grilles. I just ordered the Vintage AR re-dope stuff.

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JKent    0

Welcome Mo (fellow New Jerseyan)

Nice speakers. I would strongly recommend a re-cap. The Seventeens used Callins PVC caps and they are notorious for leaking (or worse).  Here's a thread that includes a schematic 

btw, I have some reproduction KLH labels for sale. PM me if interested.

Kent

 

 

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MoPhoX    0

hi JKent - is there a specific cap I should get, or does anyone have a link to it on ebay?

Also, would these old caps possibly damage the speaker?

The other day I noticed that the high end didn't kick in until I turned the volume up.

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DavidDru    0

The 17 may be my favorite speaker in that form factor.  Paired with a nice vintage amp, they are hard to beat.

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JKent    0

Hi Mo

For each speaker you need two 2uF caps and one 8uF. Use film caps. Brand does not matter (some people have favorites). Most of us here buy from Madisound or Parts Express. So if you shop Madisound you could get 4 of these: https://www.madisoundspeakerstore.com/surplus-capacitors/ (but the leads are short so you'll have to solder wires to them) or EIGHT of these (put pairs in parallel to make 2uF): https://www.madisoundspeakerstore.com/carli-capacitors/carli-mylar-1-mfd/ or 4 of these: https://www.madisoundspeakerstore.com/solen-capacitors/solen-2-mfd-fast-cap-400v/  or and two of these: https://www.madisoundspeakerstore.com/carli-capacitors/carli-mylar-8-mfd/

If you shop Parts Express get four of these: https://www.parts-express.com/dayton-audio-dmpc-20-20uf-250v-polypropylene-capacitor--027-414  and 2 of these: https://www.parts-express.com/dayton-audio-dmpc-82-82uf-250v-polypropylene-capacitor--027-426 (8.2 is close enough) or get 4 of these and parallel them: https://www.parts-express.com/dayton-audio-dmpc-40-40uf-250v-polypropylene-capacitor--027-421

Yes--a completely shot cap could cause tweeter damage, ESPECIALLY when you turn the volume up. Read this thread. johnieo (John O'Hanlon) explains why you MUST replace the Callins caps: http://www.classicspeakerpages.net/IP.Board/index.php?/topic/5025-ar18-cap-value/

Be careful when working on the Seventeen xo. That stupid metal plate can cause a short so be sure everything is insulated/isolated from the plate.

btw--both PE and Mad sell the Hi-Vi Q1R tweeter and 0.05mH inductor if you go that route for your AR-5s, so you can put together one order and save on shipping.

Kent

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Robthomp    0

I bought a pair of Model Twenties a few months back. The Model Twenties are identical to the Seventeens except they are 4 ohm instead of 8 ohm. They sounded pretty good when I got them but then I recapped them and resealed the cloth surrounds on the woofers, and now they sound amazing. 

I used the caps from Parts Express that Kent suggested.

Rob

 

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