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How to make the RP-160M come alive!
Tweaker256 posted a topic in Technical/RestorationsHello everyone, I am new to the forum but not unfamiliar with Klipsch. A good friend of mine has 2 pair Heresy’s, 2 pair Cornwall’s and a pair of Khorn’s. I have replaced crossover caps in all of them and the original diaphragm’s in one with Ti. After looking at a number of small speakers to replace a pair of tweaked NHT Super Zero’s I finally picked up a pair of RP-160M’s. I used to build speakers when I was younger, everything from cabinets to crossovers. My brother and I would use our front yard as our anechoic chamber laying the speaker down on the grass facing up into the atmosphere to do near field measurements for mechanical phase correction etc. I knew looking at the horn design in the RP series it had potential, compacted rubber coating on the Tractix horn to eliminate resonance? Who does this? Only Klipsch. The 6.5" Spun Copper Cerametallic woofer is nice and tight as well, very rigid and light weight. Klipsch did an amazing job with these drivers. They have serious potential! After listening for a few days I thought they should have had a little more clarity in the high frequency and upper midrange so I pulled the crossovers and sure enough to hit the targeted price range Kilpsch used a relatively inexpensive poly cap in the tweeter, a sandcast resistor and an electrolytic cap in the woofer circuit. These had to go. I ordered a pair of Jantzen Cross Caps to replace the Klipsch 3.9uF ones and put a couple of ceramic disks that I had lying around across the 43uF electrolytic, stage 1 complete. Now the horn is coming alive! This made an improvement in the high frequency clarity that let me know I was right about these drivers and moving in the right direction. Next step was to replace the 43uF electrolytic with Jantzen Cross Caps, the 9ohm sandcast resistor with a Mills type and add some 0.1uF Audyn True Copper bypass caps. But that required rebuilding the crossover boards, 43uF of poly cap is too big for the pcb behind the binding posts. I purchased a 3.5" wide x .25” thick Poplar board from the local hardware store and rebuilt the simple crossover. I used Velcro to attach it to the bottom of the speaker housing. Due to the size of these speakers the crossovers needed to be very compact and as it turned out the positive spade terminal on the inside of the binding post had to be rotated 180 degrees so it didn’t touch the crossover. I arranged the crossover so the upper binding posts go to the tweeter and the lower to the woofer circuit. I added a little constrained layer dampening (peel and stick type) to the Tractrix port for good measure as well, it is plastic and it dose ring a bit when you tap on it. You think they imaged before? Holy crap, the clarity will blow you away! It turns out I was correct in my assessment of these drivers. This horn is the finest Klipsch has ever designed, the culmination of years of thought and research and probably reading these forums to find out what all of you have been doing to their speakers. The balance, linearity and amazing clarity from the Ti diaphragm and the Cerametallic woofer are astounding. Every bristle of the brush on a snare drum is individually defined. Voices have an airiness to them and each instrument is individually discernable. For this price these are unbeatable. By the way I stole them for $299.99 and free shipping from ebay, brand new in the original boxes! I probably spent $150.00 or so on the crossovers alone bringing the total around $450.00. A great deal on speakers with such potential.
FS: RP-160M, WA-2 sub kits, Polk RTi A9 towers
jg1989 posted a topic in Garage SaleHello all! I'm selling a few extra things I have sitting around. First off is a brand new in box pair of black RP-160M bookshelves. I got these as part of a bundle with some RF-7 II's and an RC-64 II but I already had a pair of them, so I don't really have a need. Asking $350. Can and will ship at buyer's expense. I also have a couple brand new in box WA-2 wireless subwoofer kits for use with the reference series subs. I bought a couple R-115sw's and they came with them but I prefer a wired connection. Asking $60 each, will ship at buyer's expense. Last but not least I have a pair of Cherry Polk (eww I know) RTi A9's that I ended up with as part of a trade and I really have no space for them. Plus, I'm sort of a Klipsch guy. No idea what these things are really worth, but MSRP looks to be $1500/pair. The previous owner either had them shipped or knocked them over, and unfortunately they have a couple dings in them. The worst by far is next to the middle woofer on one of the speakers, but all drivers are absolutely flawless. I have a couple pics to highlight the damage, luckily it's mostly covered by the grills. If there's any interest, I'd strongly prefer local pickup in Terre Haute, IN. Asking $600 for the pair.