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stupidhead

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About stupidhead

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    Advanced Member
  • Birthday 02/12/1959

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    Male
  • Location
    southern New Hampshire
  • Interests
    music and craft beer (and my wife)

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  1. stupidhead

    AR-3A Restoration Project Questions

    Hi Adam, Nice thread and project, take your time and research and get answers before doing anything that might not be reversible. On your sealer question, if we are talking about the "gasket" between speaker and baffle then using either a clay like product (mortite) or a foam strip is generally the approach for "sealer" but possibly your reference is a sealer for the surrounds on a cloth surround woofer? If you have foam surrounds, replacing with fresh appropriate rings is fairly simple, if cloth surrounds there is much bad info on the web and can lead to using a material (permatex for example) that will dry out and stiffen the surrounds leading to other than desirable performance. There is an appropriate product for this application developed by one of our members here and will "seal" the cloth effectively but will not stiffen over time. In all cases, sealing is a very important aspect to acheiving acoustic suspension. Take your time and enjoy! Geoff
  2. stupidhead

    Another KLH refurb - Not speakers

    nice Kent
  3. stupidhead

    My Dads AR1s

    the holes in the frame don't look to be very big and can likely be made invisible with good filling technique. I could be wrong but I believe they are Birch.
  4. stupidhead

    Too much power for speakers?

    thanx to everyone, these answers help settle my concerns. the chart for fuses will be helpful for sure.
  5. stupidhead

    Too much power for speakers?

    Hello fellow members. As many of you know I am a fan of the vintage AR speakers. Let it just be said I have a number of sets to choose from in the various 2, 3, 4 and 5 models. My particular favorites are the AR5's. Over the years I have seen cut sheets for all these models and when looking at amp power ratings 100 watts per channel is generally cited as the max power recommended. Over the past few years I have also been on a quest for some vintage amps and am a bit nervous about a few of them. First off I have acquired a Marantz 2230, 2270 and 2325. All have now been gone through by very qualified techs (2230 Pat Font and 2270/2325 Randy Buckner) and am trying different combinations to evaluate the synergy between the various models. I also have a completely McShaned HK Citation II that I got from Don Sachs. I am actually using that with the 2230 as pre and driving a refurbed set of 4x and the result is sublime. I have been using the 2270 to drive a stacked set of 5's on top of a set of 2ax and have been quite happy with the result. I just got back the 2325 from Randy and this 125 watt per channel beast on paper would have too much power, I think. When he tested it he got 140 per before clipping, yikes. Before sending this out to Randy it cooked a pair of KLH 5s which I had gone through. They sounded quite good at moderate volumes but if jacked up over 12 o'clock the speakers would "snap" on heavy bass notes. One day my wife was listening and had opened the windows to hear the music while she worked in the garden. When I got home the speakers were buzzing and haven't been heard from since. The question is will the 2325 have too much power and is there anything (in line fuse?) I can do to safeguard the speakers? I have also recently gotten two Dynakit ST70 amps which I hope to work on this Winter. I am not too worried about their power being too much, much like the Citation II. Then there is the two (yeah two) Nakamichi PA7 units I fell into earlier this year. I could not pass them up once I did a bit of research on them. The price was right and the one owner (who I know to be a reasonable sort) history was too much to pass up. I am likely sending these to Randy for his magic and a refresh but on all counts would be the same concern I have about the 2325, just too much power for these models. I have seen a spreadsheet someone created that has specs all on one sheet but can't find it anywhere now, Robert you must have it yes? Please post or send if you do. And I do ask myself "My God! What have I done?" thoughts, ideas, whatever. Obviously I need help, maybe a support group if you know of one. Geoff
  6. stupidhead

    Picked up some more AR speakers

    good looking box David. I have my eyes out for a set of these. look forward to hearing your listening impressions.
  7. stupidhead

    AR-5 crossover

    Opinion? Well, I happen to have a great fondness for this model. Currently have three sets, two rehabbed and one in the queue. My own personal opinion/approach is almost always keeping the speakers oem. I have waited months (even years) for something I am looking for to surface but the group here is also a wonderful resource for knowledge and parts. Remember it is my opinion, not saying other approaches are wrong. Keep an eye out on local craigslist and if yard sale-ing I always ask if they have any old audio equipment, you never know what might be there. Same goes for old vinyl btw. The bay often has offerings for AR5 but I will not have anything shipped and will only work with sellers who I can drive to or meet somewhere so I can inspect the goods. There have been a couple exceptions to this stance, but I can smell a scam or a person I would like to work with pretty early on in a conversation. Final thought...for now. AR5 speakers are incredible when rehabbed properly and are worth the investment in both time and money (within reason). I am a believer that cost and value are two entirely different things. As for the caps in your hand, some will say they are keepers and not to replace. This is where oem has a bit of flexibility for me, and generally I will replace with high quality caps, again within reason. above copied from previous thread. As for the caps question, I personally use Solens as a rule but there are no absolutes in this topic. Do you know your way around a schematic? How about a soldering iron? I always take many pictures before snipping/removing anything, but in your case you certainly don't want to put it back together like it was. Here is a link to my thread of an AR5 rehab from a few years ago. Much great info from others and may be a worthwhile read. I notice some crud/corrosion/rust on the stem and nut showing at the T terminal. These are relatively easy to remove and with a Dremel (or other) tool and a soft wire brush can and should be cleaned up. Just part of the process. will enjoy watching your progress, prosit!
  8. stupidhead

    need help w/ AR5 crossover

    Hi ctjetta, the first thought would be that you should start your own thread on this topic. I see you know how as you started a different topic a bit ago. Opinion? Well, I happen to have a great fondness for this model. Currently have three sets, two rehabbed and one in the queue. My own personal opinion/approach is almost always keeping the speakers oem. I have waited months (even years) for something I am looking for to surface but the group here is also a wonderful resource for knowledge and parts. Remember it is my opinion, not saying other approaches are wrong. Keep an eye out on local craigslist and if yard sale-ing I always ask if they have any old audio equipment, you never know what might be there. Same goes for old vinyl btw. The bay often has offerings for AR5 but I will not have anything shipped and will only work with sellers who I can drive to or meet somewhere so I can inspect the goods. There have been a couple exceptions to this stance, but I can smell a scam or a person I would like to work with pretty early on in a conversation. Final thought...for now. AR5 speakers are incredible when rehabbed properly and are worth the investment in both time and money (within reason). I am a believer that cost and value are two entirely different things. As for the caps in your hand, some will say they are keepers and not to replace. This is where oem has a bit of flexibility for me, and generally I will replace with high quality caps, again within reason.
  9. stupidhead

    Repatriated AR collection

    hi there roger, good to see you here
  10. stupidhead

    KLH Model Thirty-Two Loudspeaker

    hey Robert, I too would have not been able to leave them on the curb. as for the damping, I would think experimenting with varying thickness' of material would be in order and relatively easy to apply. as always, enjoy your work.
  11. stupidhead

    Hi, New With New To Me AR-2ax Pair

    really enjoy your review here. you will find near field to be enjoyable as well. listening environment and source (sounds like your source is awesome) will obviously effect your experience. keep us informed and good luck on your interest/quest for some 5s.
  12. stupidhead

    AR 4X Cone/voice coil/spider replacement

    welcome Josh. are you able to post pics please. you say "torn" but how bad. marrying ripped/torn cones with coffee filter material from the backside can result in an almost seamless appearance. seems I see separate woofers come up on the auction site (with cloth surrounds) for around $50ish, criss cross is the wild card for a match. kudos for keeping it oem in any case
  13. didn't enjoy it then and still don't. maybe I'm not couth
  14. stupidhead

    Hi, New With New To Me AR-2ax Pair

    I am pleased you found and enjoyed my video Sara. We are close to putting together another and hoping for it to be even more revealing than the first. Yet another journey
  15. not intending to start anything but....someone who "joined" less than a week ago in my opinion doesn't really have the chops to make such a statement. I might go months between posts for one reason or another. this is a hobby not a full time job, as Adams says if you have a topic of interest that fits the CSP genre, please post. you will find some forums don't get much play, others are quite active.
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