To any that consider refoaming, the absolute worst of it is removing the old gunk, glue, and deteriorating foam surround which has turned all tacky. I refoamed a pair of Infinity speakers and was picking rubber cement off my fingers for a week. Also, it can be dangerous using sharp tools to scrape away all the factory adhesives. There is also a great debate about shimming voice coils to keep them aligned during this process. Gluing the new foam surrounds on isn't that hard, its everything that leads up to it that will try your patience. Proud owner of a pair of Boston Acoustics Lynnfield VR940s btw.
Great video and great brand. I started out with the Large Advent and went to the BA400s for an upgrade. I was disappointed. The A series were like the Advent, with a big bang for the buck, and pretty accurate with cheap cabinets and crossovers and spring clip wire connectors. But the grills fell short, and the copolymer tweeter was a tad dull. I ended up with ADS and no more foam surround rot, the silk domes tweeter and mid range are dead accurate and can take the dynamics and reproduce the transients perfectly without ringing. Copolymer drivers were created to eliminate paper driver absorption of moisture like humidity and rain that would affect the cone TS parameters. Copolymer is heavier and slower, so the original light paper cones in dry circumstances sound better. Highly suggest going with butyl rubber surrounds and shim the voice coils to avoid scraping in a re-surround. Rich So can fix most speakers and the T/S parameters are improved. Foam degrades gradually so it is in a constant downfall in performance with time. Butyl rubber is constant for 40 plus years. Thanks for the vid,
I think I had the HD9 from 96 to 2014 and loved them. Not sure if this is the older model bc the ones I had had a metal grill. I did had the HD 7 or 8 and those had the cloth grill. But great sounding speakers. I just saw a pair of HD5 for sale at this random selling store, but looks over 20 years old and don’t want to deal with reforming. But I couldn’t get the cloth grill off and you need something trim to pry off the grill.
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To any that consider refoaming, the absolute worst of it is removing the old gunk, glue, and deteriorating foam surround which has turned all tacky. I refoamed a pair of Infinity speakers and was picking rubber cement off my fingers for a week. Also, it can be dangerous using sharp tools to scrape away all the factory adhesives. There is also a great debate about shimming voice coils to keep them aligned during this process. Gluing the new foam surrounds on isn't that hard, its everything that leads up to it that will try your patience. Proud owner of a pair of Boston Acoustics Lynnfield VR940s btw.
I heard some MB Quart towers in 1993 and loved them. They exhibited excellent imaging.
Great video and great brand. I started out with the Large Advent and went to the BA400s for an upgrade. I was disappointed. The A series were like the Advent, with a big bang for the buck, and pretty accurate with cheap cabinets and crossovers and spring clip wire connectors. But the grills fell short, and the copolymer tweeter was a tad dull. I ended up with ADS and no more foam surround rot, the silk domes tweeter and mid range are dead accurate and can take the dynamics and reproduce the transients perfectly without ringing. Copolymer drivers were created to eliminate paper driver absorption of moisture like humidity and rain that would affect the cone TS parameters. Copolymer is heavier and slower, so the original light paper cones in dry circumstances sound better.
Highly suggest going with butyl rubber surrounds and shim the voice coils to avoid scraping in a re-surround. Rich So can fix most speakers and the T/S parameters are improved. Foam degrades gradually so it is in a constant downfall in performance with time. Butyl rubber is constant for 40 plus years. Thanks for the vid,
I think I had the HD9 from 96 to 2014 and loved them. Not sure if this is the older model bc the ones I had had a metal grill. I did had the HD 7 or 8 and those had the cloth grill. But great sounding speakers.
I just saw a pair of HD5 for sale at this random selling store, but looks over 20 years old and don’t want to deal with reforming. But I couldn’t get the cloth grill off and you need something trim to pry off the grill.
I have a pair from 03-08-91.
I re-foamed the passive radiators and they sound fantastic. I sold the rest of my stuff. Cheers!@@Rights4Life
So I'm thinking getting a pair of these that needs bottom 8" passive radiators for $15 is a good deal?