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Everything posted by DavidDru

  1. DavidDru

    AR12's Restored-A few Pics

    Lucky once again and acquired a very nice pair of the AR12's today from the one and only owner since he purchased them new for 10% off list at $450 in March of 79. The purchase receipt and brochures and manual all come with these so that is cool. Serial numbers are 2 numbers apart. The cabinets will require very little work but new grilles are needed. All the drivers interestingly enough are factory replacements. He told me he thought he had them replaced around 1990 and right before they were no longer available. Phew! All of these drivers need the usual age-out attention, but all work. Woofers just need new surrounds as do the mids. Tweeters and mids need the outer plate foam pieces and I hope Glenn can help with those. Hey buddy. Will get a recap too of course. 40, 20, 10 and 6. The ferro fluid thing is interesting. I recently replaced the ferro fluid on some KEF104/2 and it was pretty straight forward easy as long as you know the amount. Check out the photo with the teledyne acoustics sticker on the bottom of the rear plate and how it was meant to cover the AR logo. I hope I summarized the approach well enough. I gathered together this strategy after reading various threads on the 12's here and at AK.
  2. DavidDru

    AR-12 crossover

    Well, outstanding timing as i too need it to know what value caps I need to order for the 1's I picked up today.
  3. DavidDru

    Avid Model 230's here

    Went to pick up some AR9 drivers at a local sellers house yesterday and he had a pair of 230's in really good condition he is wanting to sell. Researching them they look like pretty good speakers.
  4. DavidDru

    RDL Acoustics F-1

    Picked up a great pair of RDL Acoustics F-1 this weekend. A mere $80. All is good with them. May need new surrounds on the top woofers. They are in-tact but in that stage of where it seems like you could put your finger through them. No biggy. Great cherry finish and overall styling with these, which I think Roy A. was pretty good about over the years. Currently being driven by my fully restored Pioneer SA-9100 at 60/ch. I will put them in the main system where I can go 240/ch SS or 35/ch tube and see what they do. They seem a little in want of power. Love Roy's tweeters. I feel fortunate to have a pair of these as they seem rare as hens teeth these days. They proudly join My Allison Ones in the collection. Hey from the Mountain Pacific Northwest!
  5. DavidDru

    Newly acquired AR-LST

    Easily. The kLH28 they are for about the same size as the LST's actually.
  6. "no sales ever allowed" Can't even imagine that approach these days, and it's a shame.
  7. DavidDru

    Newly acquired AR-LST

    Cool. I have had some KLH Model 28 stands (tulip) listed over at AK for a while now. I bet they would be great for those.
  8. DavidDru

    Repatriated AR collection

    Well, we will miss you out here Roger, but it's great to hear you are happy with the move back to the old stomping ground. Apparently the restraining order has expired. Make the most of it.
  9. DavidDru


    Fun stuff there guys.
  10. DavidDru

    Ar3 for $2,600?

    What am I not seeing here beyond that crazy high price they sold for? http://www.ebay.com/itm/VINTAGE-Acoustic-Research-AR-3-SPEAKERS/282611068645?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649
  11. So, those of you that have the 9's do you bi amp them? If so how do you have yours set up? Vertical passive? Horizontal passive? What gear have you used? In my case I have the Adcom GFA 5500 and am thinking about getting another. I have a few different preamps to choose from including the Adcom GFP 565, Xiang Sheng tube, and my recently purchased Citation 1. Let's hear your success stories.
  12. DavidDru

    L710 conundrum????

    Hmm, Rob, those do look odd, including the mids and tweets. Here is my 710:
  13. Came across an exciting opportunity to pick up a somewhat rare Technics turntable the other day. It is the SP-15 table with EPA-501H arm, EPA-B500 mount on the SH-15B1 plinth combo. The plinth is a very nice Rosewood. The current cart is only a Shure M44-7 and will be upgraded. Did not include the dustcover. This professional table from 1981, was sold to consumers and radio stations. It wasn't necessarily used at the stations for playing the music as much it was used in production rooms for under voice overs etc. it weighs in at 50lbs/22.7 kilos. It is manual. Has a lot of torque and ramps up to speed immediately then brakes similarly. Specs are impressive. I got it from a local Professional Broadcast Engineer at the local PBS radio stations. He got it out of a station warehouse and refurbished it (mostly just dust and lubricant age). Thought I would share since it is a little off the beaten path. My SL-1300 is next to it in the photos to help illustrate it is a big one.
  14. DavidDru

    M-907 to be restored

    I found a very nice original owner set of Dahlquist M-907's listed on Craigs List in a town I was heading to for business and was driving. After some research on-line, and there was not a whole lot out there, it seems the entire M line is overshadowed by the much more popular and in service DQ line. The little I was able to read on them, folks were really surprised and impressed once they heard them. That's the sort of stuff I like to be on the look out for. Sneaky good. These are a 3 way model that is somewhere between floorstanding and a large format bookshelf that came with it's own stands. For me to bother, they had to have the stands and these did. Overall they are in great shape and will not require much exterior work. The grille fabric could be replaced but that will be a bit more challenging than usual even though it is juts the modern black stuff. Each grill is trimmed on each side nicely with solid wood slats but the fabric is attached underneath them. I am sure they are glued and possibly doweled on so I will hope to get lucky and be able to pop these off once I try. Till then I will just clean them up and see if the few small holes and snags just kinda fade away once clean. These have the Advent woofer with Vifa tweets and mids. The surrounds are deteriorating and I already have replacements ready to go from Rick Cobb. the baffle is coverd with felt and I am not sure if that is for looks or for some sound reasoning. Doesn't matter as I think it is a nice touch either way. I have them hooked up and playing at low volume and even with that they really do sound nice so I am looking forward to post new surrounds.
  15. DavidDru

    Newly acquired AR-78LS

    The car analogy is a good one. One would wonder what would have happened if AR had kept the model number going and just made changes to it over the years like they seemed to do for a while with various models (3 -3A, 2-2a-2ax etc). At some point they either felt the design changed enough to call it something else, or the marketing people finally got their way. No doubt, the 3 and 3a were the industry standard for write some time and I am sure other speakers manufacturers probably tired of being compared any time they came out with a 3-way design of similar proportions.
  16. DavidDru

    The Quintessential AR Speaker

    Great responses above. And I will throw in my response....in era's. The AR3 established AR and defined so much for the brand and in the industry, as well as customer expectations from that point forward. The 2nd era would have to be the AR9. Both made huge statements.
  17. DavidDru

    Newly acquired AR-78LS

    My comment was just that, a thought out loud comment and general question. Not pointed specifically at your feedback on these specific speakers ra ra. It's just interesting to me that so many other later models from AR are looked upon this way, where in general most are just 3-way designs like many other brands. I would guess it would depend on how different the drivers were at this point. The enclosure is different. Crossovers are different etc Maybe I am wondering if it's a fair thing to do and wondering if it's only because it's the same brand. Thought I would throw out the question and get people thinking and responding.
  18. DavidDru

    Newly acquired AR-78LS

    I bet those are good. So are we always going to say any 3 way with a 12" woofer from AR is a descendant of the AR3? At this point in the chain I am not sure what the 3 or 3a would have to do with a 3-way 12" design.
  19. DavidDru

    M-907 to be restored

    Sorry for not responding earlier Pete. The amp is a Phase Linear 400 that has been rebuilt entirely to the White Oak up grade. WOPL as most refer to it as. Phenomenal. Powerful. Now found some DQ-M5's A smaller 2 way. Also very good after new surrounds.
  20. DavidDru

    Biamping L1590 anyone doing it?

    yes. Device sits between preamp and amps. This particular one is 2 in 4 out so I can split to two amps. Connect the device to your laptop and a microphone and make any adjustment you can think of and what the computer picks up on. They have others that split more ways too. Can be used to do high level room equalization adjustments or used to divide. Or both. Once you set the settings you disconnect the computer. Look up minidsp
  21. DavidDru

    Biamping L1590 anyone doing it?

    I am still planning on it. I picked up a MiniDSP and Umik microphone so I guess I can give it a go.I will be mixing and matching amplifiers though. Wondering if it will be okay to use my WOPL SS 250w/ch amp on teh bottome end along with my Dynaco ST70 up top for something like this.
  22. DavidDru

    Allison CD8 Speakers

    Marc, where are you located?
  23. DavidDru


    Welcome to the treehouse Curt. I myself have Allison ones that I rotate in my home office, which is the system I most listen too since I am in there a good portion of the day. They ar very nice indeed but would probably still benefit from some refurbishment. I also have a pair of Al120 in storage.