Ok, needed garage speakers as I spend a lot of time there and bought a yamaha receiver/amp from some CL guy who worked on speakers and loved JBL. A year later I have a cheapo set of JBL's, L100s, L40's, L88's (need help) and L150's (really need help) Learned about buying speakers in the dark. Don't know a bunch about speakers buy I'm technical and learn fast. Would like to build a set for the TV and a garage set.
Problems:
L88's (late novas)
these cabinets look like they were REALLY kicked around and are hide-in-the-corner but work. One has the woofer cone /cap torn but siliconed back together (and sounds well) and has some weird tweeter in it (I got the original tweeter but it was "bad"), the other speaker's tweeter cuts in and out, especially with the potentiometer dial (what do you call this?) and doesn't "kick" as much as the siliconed speaker.
-is it possible to recone, how do I test for bad tweeter, can I clean/decorrode the dial, something making the woofers sound different?
L150's (not A's, really mess)
There are two, the crap one and the less crap one. Both passives need surrounds done, both look like they were stored in high humidity-screw heads on mids and tweeters are rusted (all dust caps pushed in). Less crap one - decent cabinet, plays, not sure on testing performance of all components. Crap one- cabinet is really bad, glued here and everywhere, passive cone is warped, woofer is sharpied "blown" on it bus has been refoamed.
-I'll rebuild crap cabinet, do I have to use the same material or can I use MDF, front and rear look like I can reuse, but top, bottom, sides are shot. Can I wet down passive cone and reshape (just a mist and then weight and iterate until I get it down)? How can I tell what's wrong with the woofer, no visible damage, decent surround foam job, cone moves in and out but seem asymetric in movement in/out. Can I test all the mids/tweeters for correct performance (some kind of test to tell who needs help [other than me])?
I can get the woodworking done, can solder and figure out circuits, and have a decent multimeter. I have time, but not a huge budget. I can look up procedures and research, just looking for the right direction. Really want to pest and see where I stand with all the components, just need to know how.
L100's and L40's are great, cheapo's are going down the road when the L88's move into the garage. What do the knobs on the speakers control, the L40's have on knob, L100's have two. Any easy way to get the owners manuals (guess they would tell me the functionn of hte knobs)?
Problems:
L88's (late novas)
these cabinets look like they were REALLY kicked around and are hide-in-the-corner but work. One has the woofer cone /cap torn but siliconed back together (and sounds well) and has some weird tweeter in it (I got the original tweeter but it was "bad"), the other speaker's tweeter cuts in and out, especially with the potentiometer dial (what do you call this?) and doesn't "kick" as much as the siliconed speaker.
-is it possible to recone, how do I test for bad tweeter, can I clean/decorrode the dial, something making the woofers sound different?
L150's (not A's, really mess)
There are two, the crap one and the less crap one. Both passives need surrounds done, both look like they were stored in high humidity-screw heads on mids and tweeters are rusted (all dust caps pushed in). Less crap one - decent cabinet, plays, not sure on testing performance of all components. Crap one- cabinet is really bad, glued here and everywhere, passive cone is warped, woofer is sharpied "blown" on it bus has been refoamed.
-I'll rebuild crap cabinet, do I have to use the same material or can I use MDF, front and rear look like I can reuse, but top, bottom, sides are shot. Can I wet down passive cone and reshape (just a mist and then weight and iterate until I get it down)? How can I tell what's wrong with the woofer, no visible damage, decent surround foam job, cone moves in and out but seem asymetric in movement in/out. Can I test all the mids/tweeters for correct performance (some kind of test to tell who needs help [other than me])?
I can get the woodworking done, can solder and figure out circuits, and have a decent multimeter. I have time, but not a huge budget. I can look up procedures and research, just looking for the right direction. Really want to pest and see where I stand with all the components, just need to know how.
L100's and L40's are great, cheapo's are going down the road when the L88's move into the garage. What do the knobs on the speakers control, the L40's have on knob, L100's have two. Any easy way to get the owners manuals (guess they would tell me the functionn of hte knobs)?
