AAO25.com
Community => The Lounge => Hardware/Software => Topic started by: Spanky on Wednesday, June 29, 2011, 15:03:12 PM
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Yesterday I was given some nice JBL L19A vintage speakers.
(https://aao25.com/forum/proxy.php?request=http%3A%2F%2Fdl.dropbox.com%2Fu%2F464376%2Fwebsite%2Faudio%2Fjbl%2FDSCF0040.JPG&hash=e7897a3aaae6d8cdbf6ccdcf03142e42)
They do need new foam surrounds but the cabinets and everything else is really in great condition.
(https://aao25.com/forum/proxy.php?request=http%3A%2F%2Fdl.dropbox.com%2Fu%2F464376%2Fwebsite%2Faudio%2Fjbl%2FDSCF0044.JPG&hash=e3798cdaa12ccd22c252fbf25d106447)
I have ordered new foam surrounds and binding posts for the banana plug cables I build earlier. I will post back with pics when I install them. I will also order new capacitors for the crossover circuit but that will have to wait until I have funds.
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Looks like some kid had too much fun pushing in the woofer :D
The wood looks pretty good considering how the woofer look hahaha
Also JBL is fucking great.
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Too bad a plate amp for that thing is 4x the cost of the speaker :D
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The woofers in these are 8" and they're both built better and more expensive than the one you linked Skrewy. They're JBL 116H woofers. I did disassemble them and clean one woofer, I'm just lazy with uploading pics.
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1 as a footrest for sleeping in ma chair
I think charlie sheen is no longer winning.
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New foam surrounds arrived today. I got to work gluing them in place:
(https://aao25.com/forum/proxy.php?request=http%3A%2F%2Fdl.dropbox.com%2Fu%2F464376%2Fwebsite%2Faudio%2Fjbl%2FDSCF0069.JPG&hash=adf24a0fd12c5fa096833b72cf3d97df)
(https://aao25.com/forum/proxy.php?request=http%3A%2F%2Fdl.dropbox.com%2Fu%2F464376%2Fwebsite%2Faudio%2Fjbl%2FDSCF0070.JPG&hash=d17a6dadf8834f02d3a6dd51623627c2)
The glue adhered good to the cone since the surround was under pressure so I didn't really have to hold it or anything. But gluing the surround to the basket was harder, it just didn't want to stick down. So, I looked around and found some plastic bowls that matched the diameter and width of the surround and put some heavy objects on top. I have yet to see how it went but I think it will turn out great:
(https://aao25.com/forum/proxy.php?request=http%3A%2F%2Fdl.dropbox.com%2Fu%2F464376%2Fwebsite%2Faudio%2Fjbl%2FDSCF0071.JPG&hash=46416078d45f47502b6067b1782d829f)
(https://aao25.com/forum/proxy.php?request=http%3A%2F%2Fdl.dropbox.com%2Fu%2F464376%2Fwebsite%2Faudio%2Fjbl%2FDSCF0072.JPG&hash=79ab344102aa746d346a6769775a81a4)
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lol at using the plastic bowls. Can't wait to see how it turns out.
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Me neither... they're still not dry even sitting overnight.
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Even though I can see a blob of non-dry glue, I believe the majority is dry since I can't pull the rubber decorative covers off so that tells me that the glue that seeped out underneath them is dry. I hooked them up on my desk with temporary crossover wiring (until I my binding posts arrive and until I can afford new caps). They look and sound fantastic. Unfortunately though when running a 15hz tone at loud volumes, I hear some rubbing in the left speaker. But since that's extreme movement and that should never happen in typical use, I'm going to ignore it. Here's my current setup:
(https://aao25.com/forum/proxy.php?request=http%3A%2F%2Fdl.dropbox.com%2Fu%2F464376%2Fwebsite%2Fcomputer%2Fv9%2FDSCF0056.JPG&hash=ab918b32a46df3bd64b0b56be63670e1)
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Well awesome work. Its better to play speakers with music than tones, I hear running pure tones is not a good idea :D
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Yea, I'm not too worried about the speakers. I did get them for free and they were made as part of JBL's middle-end home line but they still are fantastic speakers. I don't get any distortion or rubbing with average use, even with loud movies and explosions so I think it's fine.
Skrewy, I don't throw my headphones, I just log off Steam :)
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I decided to buy a new surround kit (wasted $25) that comes with shims and new dust caps. Should arrive in the next couple of days. I picked up some Watco Danish Oil today and went to work rubbing the cabinets with fine steel wool and applying a few coats of the oil. Here's what they look like:
(https://aao25.com/forum/proxy.php?request=http%3A%2F%2Fdl.dropbox.com%2Fu%2F464376%2Fwebsite%2Faudio%2Fjbl%2FDSCF0051.JPG&hash=e256a23836de76ce93d16b61d4f3ad43)
Full of life now! I may apply a few more coats but it looks great as-is.
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Wow they look good!
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The wood looks great.
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nice work!
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Guess I should update this :P I received the 2nd surround kit and the first woofer dried and I tested it. It rubbed just like the first time. I just gave up and went to bed early. Next day I tried the other woofer and it was perfect. I was newly inspired so I decided with nothing to lose on the failed woofer, I peeled the surround off the metal basket (pretty easy, the glue didn't have a death-grip on the sanded metal) and re-glued it making sure everything is aligned. It still rubs now but only at 1 oclock on my amp (normal listening is 10-11 oclock) so I think it's safe as long as I don't over-drive it. Both are back on my desk making all kinds of lovely sounds. I'm currently saving up to re-do the crossover circuit. I will post pics when I do that as well.
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i just noticed the fire water u got there spanky u alco
Gotta be rollin with high quality shit.
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I finally got around to ordering new capacitors for the crossover. I picked up some Mills resistors too. Took me 2 days to rewire the crossovers since I chose to braid new internal speaker wire and solder everything. I honestly can't say I hear a difference, good or bad. The only comfort I have is in the fact that I have $110 max in these speakers and now they're in "refurbished" condition so if I ever wanted, they should fetch $350 or so to the right buyer.
(https://aao25.com/forum/proxy.php?request=http%3A%2F%2Fdl.dropbox.com%2Fu%2F464376%2Fwebsite%2Faudio%2Fjbl%2FDSCF0353.JPG&hash=d3082393fb3ee6ba2c0ab0299d79dde2)
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I meant a difference more in the capacitors, not the wiring itself. It's a good selling point if I ever sell these.
Nice changing my words around.
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Wow, looks like a superb job. The braiding must have been a bitch.
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It wasn't too bad really. Just tedious and mindfucking if you mess up. I just followed these very simple instructions:
http://www.head-fi.org/t/294279/4-wire-litz-braid-round#post_3775401