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michiganpat

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About michiganpat

  • Birthday 02/06/1975

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  • Gender
    Male
  • Location
    west michigan
  • Interests
    my family, mopars, music, vintage marantz gear, restoring vintage speakers, building speakers

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  1. when I did my 58S's years ago, I actually used some linen for the grille cloth, gives it more of a 3a vibe.....
  2. I've got their slightly older, bigger cousins, 312HO's. are you sure the woofer is metal? my 312's midwoofs are smooth poly w/rubber surround, IIRC.... these were pretty darn good speakers for their price point when they came out IMHO, but yes, they only share the name with the classic era AR's....and maybe some of the tweeter technology of the TSW eras (titanium domes on these as well, IIRC)
  3. you're seeing the phenomenon you're describing in the classic car marketplace.....the tin lizzy through 40's cars are stagnating/depreciating as large numbers of enthusiasts from these eras age out/die off, and there's softness in the 50's/60's cars as the boomers start to do the same, and there's some strength in some of the rarer cars of the 70's-90's as gen X'ers like me start pursuing the dream cars of their youth now that they have some disposable income (i.e. buick GNX, etc) same thing with the motorcycle market....why is Harley struggling? because their clientele is aging out of the market.....
  4. my biggest reason for leaning towards this route is these woofers are designed very similar to the AR woofer: acoustic suspension mounting and natural rolloff w/o any sort of crossover....looking through 8" woofers at parts express, a lot of the higher ones, the T-S parameters lend themselves much more towards vented designs, or the Qts is so high (>1) that you'll end up with a sharp bump in response and fast fall off on the low end, and a lot of them have a response peak at 3-4khz instead of a smooth roll off at 2khz that will require at least a coil to tame... the Oaktron by MISCO are intreguing (and I believe made in the USA), but their T-S parameter lend more towards vented designs, I feel... https://store.miscospeakers.com/products/find-oaktron-high-quality-speakers?size=94
  5. if I were buying new, that's the one I'd gravitate towards....
  6. teledyne bought AR in 1967 and sold in 1989.....so a large number of "classic era" AR's were teledyne era (Ar3a, AR5, 6, 7, the redesign of the 2x) though the ADD series, the vertical series, the LS series, to the TSW series.... Allison left I think in '71 and didn't have further involvement with AR after that
  7. it's an open cell foam . I've made some out of felt on mine, and have also cut out foam rings....
  8. I'd think the easiest way would be to run a single tweet and UMR in a vertical array, and one 8" lower midrange to one side with the same crossover as you 90's, but w/o the woofer section and the high pass to the LMR deleted (so that runs "full range" on the low end if it doesn't already).....if you wanted 8"W (MID/Tweet) 8"W arrangement with the woofers (LMR) wired in parallel, theoretically whatever components are on the LMR low pass crossover, you should be able to halve the inductance and double the capacitance and get pretty darn close. if you wire the woofers in series, you'd do the opposite (double inductance and halve capacitance).... I'd size the enclosure something between an AR17 and 18 for 1 woofer, about double for 2.....
  9. for my 58S's, I just recovered the MDF grille frames in linen, look great. in hindsight, I wish I would have run them on the router table at work with a 1/2 chamfer bit and put a bevel on it like the original ADD grilles. on the 58S's, the posts are on the box, and the grille frame is 3/4" MDF with holes to receive the studs....I have a spare badge, if it's the same as the 58S, but not a filler panel.... I've thought long and hard about pulling the vinyl off my ADD 18's and using real wood veneer....just never got around to it. shouldn't take more than $30 worth of veneer for the pair....
  10. nice.....years ago I tried to buy a pair but the seller was kind of a putz, and it fell through...if I had to guess, the white dustcap might be heavier to add mass and lower the driver's Fs, much like the "spitwad" dustcap on the smaller advent woofer.... and BTW the AR94 is technically a 2.5 way, IIRC, with one woofer running full range, and the other low-passed at like 200 hz....
  11. if you disconnect the crossover to the tweeter, and measure across the tweeter terminals, you should get some nominal resistance, IIRC between 4-6 ohms. if it reads open, the tweeters have a break in the tinsel leads or the voice coil is shot. there is a member here IIRC who is able to redo these tweets (or is it the older orange dome 3/2ax tweet), otherwise your (well documented) options are to roll the dice on another used pair, or the hi-vi Q1R replacement. if these are "daily driver" speakers, I'd probably look more towards the Q1R tweeter replacement.
  12. even though I get more and more impressed with my 58S's, this thread makes me want to try swapping out the original polyfill for some fiberglass....
  13. I don't have experience with the B, just the original 18 and the rock partners....like them both.....I also have had some Holographic Imaging M5's (regret selling), 2ax's (were OK, but not overwhelming) 312HO's (in our home theater, great speakers from the recoton era AR of the late 90's), and some 58S's, which I need more time with but like so far....
  14. yes...essentially tonegen versions of the 18S/B drivers. sound like them, too....xover is a simple cap, 5uf, same as the S and B. I have a pair, and ended up putting the drivers in some advent prodigy cabinets with the recapped RP "crossover" since one of the grilles was all bent up....they're run by a Marantz 2230 in my 9 year old daughters room and sound pretty much the same as the 18's that were on it before (and are now on my 6 year old son's stereo)
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