Stimpy
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Everything posted by Stimpy
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Oh Lord. This brings back nightmares! Just be careful, when removing the crossovers. The board material isn't hard to crack and split, when popping them out of the cabinets.
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Do the 9's have their original LMR driver's? They look like TSW Series 8" woofers? Otherwise, very nice. GLWTS. But, I'm sorry to read about the circumstances that necessitated the sale.
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That's not a tear in the dome. It's various layers of material, attached to the protective mesh, in front of the actual dome. I assume these materials act as damping, and help with dispersion? The black material, seen through that tear, is the dome itself, underneath the layers. Also, I just picked up a pair of AR-5's. When I start a refurb on them, I'll definitely check my domes, to see if they match your mids? Just to be sure...
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Morel Supremes...!!! Wow.
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Fully restored inside and out? New capacitors too? If so, it's a little odd that both tweeters would simultaneously fail. Maybe you need to test the driving amp too. Maybe it's exhibiting high DC offset?
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Here's a CSP thread that might be helpful? TSW-910 Also, short of finding an original, I wonder if something like this could be adapted to work? eBay MB Quart Good luck.
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Harry, and some guy in Batavia Ohio. They have all of the big AR's. I wish.
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Nice suggestion ra.ra. But one question, do the PE hurricane nuts have the same thread count and pitch as our AR T-Nuts? I guess I'm not sure if this is a standardized thing? Thanks!
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Since the coil is for a dome midrange, any of these gauges should be fine. If for a bass circuit, a larger gauge is preferable, as that also increases power handling capability.
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I'm not an expert on inductors, but any of these should work. I hope others will slap me, if I'm being stupid? 0.4 mH Inductor
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Acoustic Research AR-5 rebuild service
Stimpy replied to Jimmie Holland's topic in Acoustic Research
Is there a huge difference between these 2 types of domes? I'm just curious as to why the AR-3 mids can be fixed, where the 3a & 5 domes can't. Thanks. -
Spare parts prices are insane at present. It doesn't seem to have topped out either. Even woofers and mids, still needing a refoam, are bringing high dollar. Or at least sellers are asking top dollar. Parts are scarce too. I'm looking for a single AR92 woofer, and can't find one. And when you find something that might work, everyone expects to receive eBay asking prices. And as Arken stated, "no guarantee if they're any good"? A big risk, with potentially no reward.
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The 91 has 5 caps. Four, 8, 24, 40, and 100uf in value. The 92 only has four capacitors; 4, 8, 24, and 80uf. One coil difference in value too, but that's not so obvious.
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Thanks! I'm definitely enjoying my 58S speakers. Much more than I anticipated. So much so, that I bought a set of AR91 crossover boards too, as a mod. Just putting together another cap order for those.
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The AR58S crossovers are identical to the 91s, minus the level switches.
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I have a Sonographe SG-3 turntable. It's very good, for a modest table. It made me lust after your SA26 and SA-400 gear. That's a nice combo. Oh, congratulations on the AR9s too. Awesome speakers. I hope you sort them out? As to the recap, when redoing my AR90 crossovers, I tested a recapped crossover against a stock crossover. The differences were very pronounced. Cleaner, clearer, smoother with better presence. They're not finished yet, since I'm refurbing the cabinets too. But I hope I hear increased resolution in the lower mids and bass as well. I used Mundorf polys for the recap.
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Off topic. Harry, your AR90 cabinets, on eBay, are making me crazy! I want them, but have no way to get them! Crap. On topic. The AR UMR domes are a great driver. Well worth a little recap love, and good front end electronics.
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No love for the LMR? There's a series cap on those too. So, throw a Vishay in there as well. I'm looking forward to your AR90-ClarityCap impressions (since I live vicariously through others). I still need to investigate why the Clarity's didn't show-me-the-love, on my AR58S speakers? Could the 8.0uF mylar that I also used, have sucked the life out of the upper mids?
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I didn't realize that Callins made the large can capacitors too. I only noticed the red/black Callins caps for whatever reason? Not surprised then that they test out. I'm glad you're replacing them.
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AR Demonstration Room in Grand Central Station Photo
Stimpy replied to bellhead's topic in Acoustic Research
Thanks so much for the reply Tom. That's invaluable information. Plus, it just further strengthens the knowledge of how much time and effort Acoustic Research put into music, and the promotion of good sound. Fifteen years running that sound room. Mind boggling. That picture is incredible too! Two AR-3's feeding a space that large is mind blowing. Now, I want to try tube amps on my AR's. And were AR's and tube amps often paired together? Recommended by AR too? -
The higher in frequency, a large driver is expected to perform, the more directional said driver will become. The more it 'beams', the worse dispersion becomes, and more extreme toe in will be required, to aim the woofer, for proper balance. So, were the shifting crossover points, just a simple experiment, to find a sweet spot, where the 12" woofer didn't 'beam' at the top of it's pass band?
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AR Demonstration Room in Grand Central Station Photo
Stimpy replied to bellhead's topic in Acoustic Research
So, did an AR rep operate the room? Was it open to anyone and everyone?Just curious, I suppose, as to how the room was controlled? I how to wonder how often the turntable required a new stylus? Plus, it sounds like a prime feeding ground for thieves too. -
I'm glad to hear that the refoam and recap worked out. Give the Solens a bit of playing time too. Many feel they smooth out once they burn in for a while.
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Twist them together, side by side, in parallel. If you wire end to end, you'll cut capacitance in half.
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Wow. Crazy March weather. Be safe my friend.
