Members agedhorse Posted January 10, 2010 Members Share Posted January 10, 2010 So, I hear this all the time and this was one of my recones that came back after a couple of years with the hopes of getting a free recone under warranty (2 years... c'mon) and when I saw it, it was so obvious to me that the failure was from too much power that it was laughable. Anybody care to guess what the smoking gun is from the picture? Link to comment Share on other sites More sharing options...
Members Coaster Posted January 10, 2010 Members Share Posted January 10, 2010 its torn at the edge of the hinge Link to comment Share on other sites More sharing options...
Members Bobby1Note Posted January 10, 2010 Members Share Posted January 10, 2010 Same response, torn at the edge of the cone/surround. Could that not also be a manufacturing defect? A tiny fissure that expanded over time/use? Bob Link to comment Share on other sites More sharing options...
Members agedhorse Posted January 10, 2010 Author Members Share Posted January 10, 2010 nope and nope Link to comment Share on other sites More sharing options...
Members philw44 Posted January 10, 2010 Members Share Posted January 10, 2010 Has the cone literally eroded itself? Link to comment Share on other sites More sharing options...
Members Bobby1Note Posted January 10, 2010 Members Share Posted January 10, 2010 The two small tears I see in the cone, at roughly 2 o'clock? Link to comment Share on other sites More sharing options...
Members Unalaska Posted January 10, 2010 Members Share Posted January 10, 2010 From the marks on the inside edge of the cone I'd say it was hitting the grill pretty hard. Over-excursion. Link to comment Share on other sites More sharing options...
Members sailorman Posted January 10, 2010 Members Share Posted January 10, 2010 From the marks on the inside edge of the cone I'd say it was hitting the grill pretty hard. Over-excursion. that would be my vote (guess). very regularly spaced marks around the edge. Link to comment Share on other sites More sharing options...
Members Coaster Posted January 10, 2010 Members Share Posted January 10, 2010 that would be my vote (guess). very regularly spaced marks around the edge. nah couldnt be, cuz that would cause it to tear at the edge by the hinge and that didnt hapen. must be something else right? Link to comment Share on other sites More sharing options...
Members agedhorse Posted January 11, 2010 Author Members Share Posted January 11, 2010 Unalaska and sailorman got it right. Too bad I can't throw candy or something via the net That's the imprint of a JBL square perf grille on the edge of the cone where it meets the surround. The only way to do that is to exceed by a large margin the Xmax and Xmech of the system. The spider is all stretched out and floppy, notice that the cone sits inward of it's normal resting plane. No way it's anywhere near it's original TS parameters and will perform very poorly in it's intended box now. There's also some damage to the cone as the plup material has fatigued, but remarkably the VC is still reasonably in alignment and the cone-neck bond is intact. The spider is shot, as is everything else of importance. It's a 4 ohm version (think MP-418) and the user put more power then they realized into it. Learn form other people's mistakes, it's way cheaper than making the mistake yourself. Link to comment Share on other sites More sharing options...
Members RoadRanger Posted January 11, 2010 Members Share Posted January 11, 2010 Learn form other people's mistakes, it's way cheaper than making the mistake yourself. So, an amp with more headroom wouldn't have done that - right? Link to comment Share on other sites More sharing options...
Members agedhorse Posted January 11, 2010 Author Members Share Posted January 11, 2010 So, an amp with more headroom wouldn't have done that - right? Just done the damage faster and more efficiently. Link to comment Share on other sites More sharing options...
Members tlbonehead Posted January 11, 2010 Members Share Posted January 11, 2010 Just done the damage faster and more efficiently.but he had the gains turned down for protection. Link to comment Share on other sites More sharing options...
Members Coaster Posted January 11, 2010 Members Share Posted January 11, 2010 just move the grill farther away? Link to comment Share on other sites More sharing options...
Members agedhorse Posted January 11, 2010 Author Members Share Posted January 11, 2010 just move the grill farther away? It's already pretty far away. The woofer had to be hopping pretty good. Link to comment Share on other sites More sharing options...
Members sailorman Posted January 11, 2010 Members Share Posted January 11, 2010 Unalaska and sailorman got it right. Too bad I can't throw candy or something via the net Candy not necessary; winning the 'contest' against such esteemed competition is reward enough PS. this is why I chose powered speakers. I ain't well informed enough to avoid doing something like that, or worse, myself. I hate the smell of fried electronics. Link to comment Share on other sites More sharing options...
Members Bobby1Note Posted January 11, 2010 Members Share Posted January 11, 2010 Are you referring to those bluish marks which are regulary spaced in an arc? Even if the speaker did hit the grille, would it hit so hard that the grille would actually shed it's paint? Link to comment Share on other sites More sharing options...
Members agedhorse Posted January 11, 2010 Author Members Share Posted January 11, 2010 Are you referring to those bluish marks which are regulary spaced in an arc? Even if the speaker did hit the grille, would it hit so hard that the grille would actually shed it's paint? It hit hard enough that the edges of the square holes rubbed the paper like that. It's not the arcs or ribs of the cone, it's the marks right at the edge of the paper cone where it joins with the linen surround. They match up with the grille perfectly. Link to comment Share on other sites More sharing options...
Members Bobby1Note Posted January 11, 2010 Members Share Posted January 11, 2010 OK Andy, thanks for that. I had noticed those marks right at the outset, but wasn't sure what they were. Are the marks themselves actually exposed adhesive? Link to comment Share on other sites More sharing options...
Members agedhorse Posted January 11, 2010 Author Members Share Posted January 11, 2010 OK Andy, thanks for that. I had noticed those marks right at the outset, but wasn't sure what they were. Are the marks themselves actually exposed adhesive? Yes, they are abrasions from the cone edge hitting the underside of the grill. Link to comment Share on other sites More sharing options...
Members Unalaska Posted January 11, 2010 Members Share Posted January 11, 2010 +1 for me... Link to comment Share on other sites More sharing options...
Members 1960LesPaul Posted February 8, 2010 Members Share Posted February 8, 2010 Well at least I didn't do that...................................yet LOL!! Link to comment Share on other sites More sharing options...
Members DBR Posted February 8, 2010 Members Share Posted February 8, 2010 Has anyone ever heard of a speaker becoming unglued? It happened to me my very first gig. 5 notes into the tune and blammo...the cone literally became unglued from the shell. To this day I will never own another PyleDriver. That's what they remind me of. I replaced it one of the heaviest duty eminences on the market. It would have been a JBL instead, but they would have had to retool the cab. That bastard was pretty weighty. And it handled everything I could put into it. It wasn't worth the $$$for the cabinet mod. So I went with the Eminence which worked out quite well. No more Pyles O' S*** in my territory. Link to comment Share on other sites More sharing options...
Members agedhorse Posted February 9, 2010 Author Members Share Posted February 9, 2010 Glue bond failures can happen, they can also happen if the driver is severely overpowered. The bond typically fails at the spider-frame or spider-neck joint. Link to comment Share on other sites More sharing options...
Members W. M. Hellinger Posted February 9, 2010 Members Share Posted February 9, 2010 It's already pretty far away. Approx. 1 1/4" distance from the surround as I recall. Link to comment Share on other sites More sharing options...
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