Deang Posted November 7, 2005 Share Posted November 7, 2005 No, no, no -- don't remove the fiberglass!! The foam from the smaller Advent won't provide enough displacement -- leave well enough alone. I have one in need of a surround job. I thought I had two but I don't. I picked up a pair of the vinyl "utility" versions off of eBay on the cheap, and one of the woofers was a Radio Shack pos that someone stuck in after they blew a woofer. I didn't much care because I mostly after the tweeters and perfect corners of the cabinets. At any rate, I'll donate it, and another in need of a surround job can usually be picked up for about $30 off of eBay. I'll do the surrounds if you buy the kit. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted November 7, 2005 Author Share Posted November 7, 2005 the kits are pretty cheap and can be had easily, how bout I just send you one? It'd be cheaper than sending the woofers back and forth. How tricky can it be, you just scrape off the old foam and glue the new ones on. But I have NO WOOFERS for the 4 large cabinets at all No frames, no nuthin. What should I buy at Parts Express to replace? Quote Link to comment Share on other sites More sharing options...
DrWho Posted November 7, 2005 Share Posted November 7, 2005 The Dayton Classic 12" might be a good drop-in: http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=295-320&ctab=2#Tabs It costs $30 per driver and has an F3 around 50Hz. Sensitivity comes in closer to 90dB and it will push a clean 100dB. It requires an 11" cutout so is a perfect drop-in. I also noticed the K-22 would be a good match as well, but prob a bit too sensitive and expensive for what you're looking for. Quote Link to comment Share on other sites More sharing options...
Deang Posted November 7, 2005 Share Posted November 7, 2005 It might be best just to tackle two at a time. Forget about the smaller Advents for now, and just get the Largers up and running. You've already got the tweeters. I've got one woofer, and you just need another. You can get those Largers up and running with very little money actually. Figure $25 for another woofer, $20 for the surround kit, and $10 in caps. "How tricky can it be, you just scrape off the old foam and glue the new ones on." LOL, Well Michael -- it takes me half a day to do a pair. The Dahlquist DQ-10 uses the same woofer, and even though I've probably done two dozen of them, it never gets any easier. The old adhesive is a ***** to get off, and the rest of the work has to be done from underneath the basket. You see, the freaking surrounds are inverted, that is -- the rolled up side faces down, and the outer edge of the surround actually adheres to the bottom outside edge of the basket. The fun part is doing it all while making sure the pole piece stays centered in the magnetic gap. Most use shims for this, which means cutting out the dust cap, and this ruins the woofer's original look (because the replacement dustcaps that come with the kits don't look and fit exactly the same. Some get majorily bummed out by this, so I came up with another way of doing it. At any rate trust me -- it's a pain in the arse. Any work I do on an Advent or DQ-10 is definitely a labor of love for me. Quote Link to comment Share on other sites More sharing options...
DrWho Posted November 7, 2005 Share Posted November 7, 2005 Is it just the outer surround that needs fixing? It shouldn't be too hard to align the VC if that's the case. Though the underside thing has me intrigued...I would always use a dinner plate to hold the surround to the woofer while drying so how do you keep it attached? Temporary tape or something? Quote Link to comment Share on other sites More sharing options...
Deang Posted November 7, 2005 Share Posted November 7, 2005 Just found this out here: http://www.classicspeakerpages.net/dc/dcboard.php T/S parameters for the Original Advent Woofer. Measured voice coil DCR (Re) with a Fluke meter at 4.83 ohms.Piston diameter measured (estimated) at 20 cm = 7.87"Used Liberty Audio Suite (LAUD) added mass method, delta mass = 52 grams for -33% delta f.Midband (80 Hz) test voltage was about .5 Vrms.Woofer had been used (broken in if you believe in such things) with music before testing: Fs = 18.23 HzVas = 250 liters or 8.82 cu ftRe = 4.83Qe = .364Qm = 2.93Qts = .324Mms = 42.28gCms = 1.80 mm/NBl = 8.02 Tmno = .400 %SPLref = 88 dB Quote Link to comment Share on other sites More sharing options...
Born2RockU Posted November 7, 2005 Share Posted November 7, 2005 Dean... LeMay here. Any word on my center-channel crossover shipment?? Quote Link to comment Share on other sites More sharing options...
Deang Posted November 8, 2005 Share Posted November 8, 2005 Believe it or not -- you have mail. Quote Link to comment Share on other sites More sharing options...
Hornfan Posted November 8, 2005 Share Posted November 8, 2005 If you have the original wood veneered cabinets with the beveled front a 12" woofer may not fit between the edges. If you look at the basket frame of an original it is not round (looks like an oversized 5 1/4 car speaker to me) My Dad and I had to make an adapter ring out of 3/16 aluminum and fit a 10" woofer in place. The utility cabinets will take a 12". My $.02, get the original tweets and woofers. Hope I've helped in some way. HF Quote Link to comment Share on other sites More sharing options...
DizRotus Posted November 9, 2005 Share Posted November 9, 2005 If you have the original wood veneered cabinets with the beveled front a 12" woofer may not fit between the edges. If you look at the basket frame of an original it is not round (looks like an oversized 5 1/4 car speaker to me) My Dad and I had to make an adapter ring out of 3/16 aluminum and fit a 10" woofer in place. The utility cabinets will take a 12". My $.02, get the original tweets and woofers. Hope I've helped in some way. HF This is exactly what Michael and I discovered. The "utility" vinyl clad cabinent (see photo attached above to the eighth post) will accomodate a full 12" woofer, but the walnut cabinets are too narrow across the face. It seems odd that Advent made them that way. Quote Link to comment Share on other sites More sharing options...
Marvel Posted November 9, 2005 Share Posted November 9, 2005 Michael, Replacement drivers for Advents: http://www.simplyspeakers.com/12diaphragms.htm Not the cheapest, but more the real deal. Bruce Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted November 9, 2005 Author Share Posted November 9, 2005 Thanks Marvel, but Ouch! For $129 per woofer and $59 per tweeter, I could have a good pair of Heresies. But that is definitely the real deal. M Quote Link to comment Share on other sites More sharing options...
RichardP Posted November 9, 2005 Share Posted November 9, 2005 I don't know if this is feasible or would give you the info you want, but when I had my Large Advents in the 1980s, I searched for and found a Stereo Review article about them, which appeared in the 70s when the speakers first were introduced. I couldn't say exactly when that article appeared, but my guess is mid 70s. A large library, maybe a university library, might have those old issues of SR. I found them in the music annex of the main library. Maybe an online archive exists as well. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.