Gazebo Steve Posted July 22, 2013 Share Posted July 22, 2013 Started a refoaming thread cause I couldn't find one. I'm fairly new here. I've been into audio gear for years but just recently more got into 70's era speakers and amps/intergrated amps/receivers etc, and I just found a pair of "The Advent Loudspeaker"s which I believe to be the Walnut veneered versions but I'm not positive. I'd like to say that the grill cloths were re-done as I have not been able to find another Advent Loudspeaker with this style grill cloth..I love it though. It looks so awesome. The best part is I just found them on Craigslist WITH a stereo cabinet for $20. No questions asked just go pick the stuff up right? So I did. Did I luck out? Aside from the foam and an easy dust cap pop out...everything seems to be there. Just want to make sure I'm on the right track fixing these puppies up. Bought The Original Advent 10" Masonite Frame Speaker Foam Edge Repair Kit from Simply Speakers and checked out the videos he/she/they have on youtube. Seems to be pretty legit. I'll take more pictures when I start doing the work. Just this, replace the fuse lamps with LED's in the Marantz 2440 and I'll be ready. Quote Link to comment Share on other sites More sharing options...
ticotico Posted July 22, 2013 Share Posted July 22, 2013 wait what? led instead of fuse lamps? Quote Link to comment Share on other sites More sharing options...
b_demarco Posted July 22, 2013 Share Posted July 22, 2013 wait what? led instead of fuse lamps? Yes, it's possible my friend. Quote Link to comment Share on other sites More sharing options...
bearchuck Posted July 22, 2013 Share Posted July 22, 2013 Awesome. I love to see people getting into stuff like this. Whether or not you prefer vintage or new, this is a fun, relatively cheap project that should yield pretty good results ... providing the drivers are in good condition. Have you hooked the speakers up yet? Even without the foam, you can still see if they work. It won't sound good, but you'll get the idea. The Advent Loudspeaker certainly isn't the be-all end-all to speakers of its day, but there's a reason why they're still pretty popular amidst vintage enthusiasts. But whatever ... for a small amount of money, you get to have a little fun, experiment with something new / different and feel like a man for restoring something with your bare hands! Quote Link to comment Share on other sites More sharing options...
Gazebo Steve Posted July 25, 2013 Author Share Posted July 25, 2013 +1 for feeling like a man bearchuck! I haven't plugged them in yet, it truly was my first instinct but I just said I'll wait, saw the nakedness, figure I'll fix them and if there's a further technical issue in the back or with the speakers I'll go that next step. You know how it is, just enjoying learning how everything works, then saving a shit ton of money when you need to fix it! The drivers seem to be in great shop, very tight like they should be but still bouncy. I think they're going to sound great. I also used a the vacuum technique to pop the dent out of the dust cap, just have to make sure not to let it suck too hard or you'll probably smash the dust cap because of the suction (which I almost did) but it's fixed now! Based on most of the research I've done I want to say these are very early 70's models. Thinking 70 or 71. I found a white slip of paper behind the speakers when I removed them but couldn't find a method to decipher if they provided a date. A 223795 I know they're the older versions because of the masonite ring around the 12" enclosure, but that's about it. Quote Link to comment Share on other sites More sharing options...
Gazebo Steve Posted July 31, 2013 Author Share Posted July 31, 2013 I need to get the pictures up but I refoamed them and they sound AWESOME. So much bass. SO tight. Problem was, (and I should have known because the right channel meter was bouncing) was that the integrated quad amp's (Marantz 2440 stamped 1972) right channel seems to be blown, or the speaker relay is dirty. I've used the DeOxit to clean out all the pots and switches, but I can't seem to find a clear speaker relay box. If I have found the box, it's thin, black, seems to not be possibly to be opened like the ones I see in all the videos on youtube. The name OMRON is on the side...I dunno if they strictly made/make relays but my research showed they did. I believe it to be a problem in the preamp? Using the volume on the front while using the headphone jack does not effect the volume of the popping or crackling, left side sounds so good and clear, but the right randomly pops every few seconds. Sometimes it won't do it at all, but no sound is coming out either so it doesn't really matter. All of the transistors look good, it doesn't look like the amp was used that much. Not very much corrosion or rust. Pretty clean. Every single thread I read though says "parts in electronics 30 years and older like this basically need to have everything replaced." I don't really want to, but I have a buddy that could probably do it. Might as well. I've replaced the lights. They also look pretty cool. Any help on figuring out that relay would be awesome. There isn't very much information on the old 2440's and quad amps but they really sound great. I was blessed spending nothing on the amp sitting in my dad's house and finding the Advents on craigslist for $20. Refoaming kit for $26.95. What a deal. Quote Link to comment Share on other sites More sharing options...
Gazebo Steve Posted July 31, 2013 Author Share Posted July 31, 2013 Adding glue: Foam glued to inside of cones: Adding to outside, then you push it down past the masonite ring and push it back up so it self adheres, but you really need to get your finger in there and push the foam against it to make sure it secures: Finished speaker: The Marantz 2440: And the setup (until a get one of those 2x4 expedit shelves for the wax in that Nintendo box: Quote Link to comment Share on other sites More sharing options...
daegor Posted August 1, 2013 Share Posted August 1, 2013 Thanks for posting this, I'll be referring back to it whenever I get around to repairing the 15" 1000 Watt JBL subwoofer I picked up at a garage sale for $20 Quote Link to comment Share on other sites More sharing options...
JumpingBean Posted August 2, 2013 Share Posted August 2, 2013 You dont need to replace much in the marantz besides the capacitors, however on an amp that good there are a lot of caps. A full cap job is what most recommend for amps that old (you also should get the crossovers in the speakers recapped). This need not be done yourself, if you live in a city chances are there is at least one audio tech in your vicinity that can do all of this for you. (A full recap job on a marantz that size shouldn't cost more than 200-300 bucks). But it is so worth it to save such a great amp.Side note, you have one of the quintessential "east coast" speakers right there. Probably the biggest selling loudspeaker of the golden era next to the JBL L100s.The golden 70s were dominated by three speakers. You has the "west coast sound" started by the JBL L100s and continued by the Pioneer HPM-100s, then you had the "east coast/british" sound pioneered by the Advent and surrounded by others like Bozak 302s, Celestion Dittons and various B&Ws.Enjoy these things. daegor 1 Quote Link to comment Share on other sites More sharing options...
Gazebo Steve Posted August 3, 2013 Author Share Posted August 3, 2013 I am! They're so bassy and awesome. Really worth it. I love all the sub levels you can hear at such low volumes. You don't get that kind of sound when computer speakers are quiet or loud really, they're just not the same. Even with a dedicated woofer. Quote Link to comment Share on other sites More sharing options...
Sugar Shane Posted September 12, 2013 Share Posted September 12, 2013 Just fixed a set of JBL 4410s. Another re-foaming success story! Quote Link to comment Share on other sites More sharing options...
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