WopOnTour Posted December 1, 2009 Share Posted December 1, 2009 Just wondering if anyone here has heard of or experienced and sort of woofer damage, from shipping Khorns (truck frieght) with the speaker cabinets laying flat on a pallet, i.e. front face down? Is there anyway that on the rough ride (trailers dont have much for suspension) the woofers might get bounced to the point they would exceed maximum excursion and be damaged? Could this cause a voice coil to go open circuit? OR should the suspension of the surround and spider be able to control the mechanical travel when hanging upside down like this??? Let's just say this is all 'hypothetically" at this point. []\ Thanks to any/all replies WopOnTour Quote Link to comment Share on other sites More sharing options...
HudsonValleyNoah Posted December 1, 2009 Share Posted December 1, 2009 Doubt it. Quote Link to comment Share on other sites More sharing options...
Don Richard Posted December 1, 2009 Share Posted December 1, 2009 Put a shorting jumper across the place where the woofer connects to the crossover. I remember when almost all cone drivers were shipped with a shorting clip across the voice coils to dampen cone motion.. Probably not really necessary, but won't hurt. Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted December 2, 2009 Share Posted December 2, 2009 Never heard about a problem with the K'horns. Mine went from Hope to Berlin, to Frankfurt, to Ansbach, to Bremerhaven, to Ft. Monmouth, to Huntington, W V, to Labelle, FL home 1 to Labelle FL home 2, to Okeechobee, FL home 1, then home 2, then home 3 and finally to home 4. Lotta bouncing around from 1978 to now. No problems. Quote Link to comment Share on other sites More sharing options...
WopOnTour Posted December 2, 2009 Author Share Posted December 2, 2009 Yes, but that was probably standing upright correct? These were apparenty laying down with the cones facing down on tha back of a high-boy trailer. I really not sure if this could cause damage either, but I'd thought I'd ask the group. I really like the sorting bar idea to add back-emf induced self damping- good idea! Thanks Quote Link to comment Share on other sites More sharing options...
mike stehr Posted December 2, 2009 Share Posted December 2, 2009 Put a shorting jumper across the place where the woofer connects to the crossover. I remember when almost all cone drivers were shipped with a shorting clip across the voice coils to dampen cone motion.. Probably not really necessary, but won't hurt. Yep. kind of a damping/braking sort of idea. It may not be really necessary with a driver having a stiff suspension. But with a driver with a loose suspension, (easy cone movement/excursion) shorting the terminals can really help with regards to shipping a driver. I'll short the terminals on speaker drivers when shipping, no matter what the suspension. Except tweeters, can't see the point there.... Quote Link to comment Share on other sites More sharing options...
Pete H Posted December 7, 2009 Share Posted December 7, 2009 I've had a 10" in an RF 7 and an 8" in an RC 7 tear during shipping from what I conclude was static shock. Quote Link to comment Share on other sites More sharing options...
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