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Asmo

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  4. Refoaming Acoustic Research 310HO

    in Acoustic Research

    Posted

    Update:

    So i ordered a few sets of rubber surrounds and 3 different glues, none of them work unfortunately

    Aleen's Tacky glue- was very hard after drying like super glue hard, and didn't stick to the rubber

    Aleen's original- same thing

    e6000- was better but didn't hold well 

    What else do you guys suggest? will polyurethane type adhesive be good? like Sikaflex etc..

     

     

  5. Refoaming Acoustic Research 310HO

    in Acoustic Research

    Posted

    33 minutes ago, Pete B said:

    I worked on my friend's pair probably 10 years ago and they didn't need refoaming back then.

    I try to clean off old material the best that I can but you have to judge if you are going to

    do more damage.  A couple of tips:

    I've used a tiny wire brush on a Dremel tool with very good results, go slowly of course,

    and I usually stuff old plastic bags under the cone so that all the force doesn't go to the

    voice coil to counter the wire brush.  You should also put something directly behind the spot

    where you are using the wire brush, I very carefully use a finger.

    You could try slicing it off with an Exacto but I'd had mixed results with it.

    Last resort is to glue on top of it.

    That was regarding the cones, the metal frames are not a problem to clean, scraping with

    Goo Off or sometimes Nail Polish remover is better.

    I'd call Simply Speakers or one of the other US companies and ask for their advice.

    I don't think that, if those were rubber, that type of rubber is generally available and 

    therefore I'd go with foam.

    There are guides as to what measurements to take to get the correct foam, also tell 

    them if the cone side edge is flat, angled, or filled fillet.

    I fairly sure that those are coated paper cones, and I'd use Aleen's Tacky glue since it

    gives you time to adjust things.

    Hey Pete,

    Thanks for the detailed comment, i will try this method and see how it goes.

    also, i found these posts: https://www.ukaudiomart.com/details...ho-floor-standing-speaker-set/images/1871174/ and https://www.hifido.co.jp/sold/13-66128-93915-00.html?LNG=E
    by the look of it you can say the surrounds are made of rubber? every picture i found of these speakers the surrounds look like that, the leftover surround material of my speakers were gummy and hard and didn't felt like foam. i will try to find some pieces and upload it 

     

  7. Refoaming Acoustic Research 310HO

    in Acoustic Research

    Posted

    I'm in the process of restoring/refoaming a pair of Acoustic Research 310HO's, all 4 of the 5inch speakers need to be refoamed.
    i watched a few dozen videos on how to do it and it seems pretty straight forward but i have a few questions:
    1. im pretty sure the original surrounds are made from rubber but im not 100% on it, can anyone confirm?
    2. the size is a bit tricky, its not 5inch. i measured about 128-130mm and the cone size is 87mm ID and 95mm OD, does it have to be the exact size or 1-2mm offset is fine?
    3. is there a difference in sound between rubber vs foam surround?
    4. in the pictures you will see a glue or rubber (I'm not sure) stuck on the cone edge, it doesn't really want to come off easily and stuck on there pretty good, is it ok to leave it or i need to scrape it off
    5. glue, if ill go with foam surrounds i know what to get, but for rubber its a bit of a mystery. what do you recommend?

    Thank you!

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