Best way to seal a driver in acabinet ?

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   The drivers are usually fitted with a foam rubber seal which should stay attached to the chassis so no need to apply anything else.

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fatfreddiescat Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 15 October 2010 Location: N.E.Wales Status: Offline Points: 1083	Post Options Post Reply Quote fatfreddiescat Report Post Thanks(0) Quote Reply Posted: 05 November 2017 at 3:19pm
	The drivers are usually fitted with a foam rubber seal which should stay attached to the chassis so no need to apply anything else.

Safetyman Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 08 February 2009 Location: Brighton, East Sussex Status: Offline Points: 555	Post Options Post Reply Quote Safetyman Report Post Thanks(0) Quote Reply Posted: 05 November 2017 at 3:38pm
	Ok, thanks. Just tested both cabs, and they seem to be working ok at the moment so, maybe, it was dirty/corroded Speakon contacts due to exposure to the rain when used a couple of gigs ago.
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csg Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 17 September 2007 Location: bedford Status: Offline Points: 6086	Post Options Post Reply Quote csg Report Post Thanks(0) Quote Reply Posted: 05 November 2017 at 5:13pm
	In all honesty I would be very surprised if its anything to do with corroded speaker pins - we have dozens of speaker systems that probably spend 50 days a year in poring rain with no weather protection, connected with NL4MPR sockets and have done for several years without a single connection issue. The detoxit stuff belongs in a hifi shop! Isopropanol or servisol no.10 is all you should ever need unless its larger than a 63/3, in which case contact grease is your friend. If BMS drivers, you may want to check the tightness of the screws holding the diaphragm onto the magnet, we torque ours around once a year as they have a tendency to loosen up over time - and if they get loose enough to let the voice coil move backwards slightly the output will disappear. Ive seen this happen more than once on both their comp and coax 8" units.
	“The fact is this is about identifying what we do best and finding more ways of doing less of it better”

Safetyman Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 08 February 2009 Location: Brighton, East Sussex Status: Offline Points: 555	Post Options Post Reply Quote Safetyman Report Post Thanks(0) Quote Reply Posted: 05 November 2017 at 7:42pm
	Thanks csg. I will bear in mind the servisol no 10 etc for future reference. Yes, they are all BMS drivers, Tony Wilkes's personal 4 box system( F208's and F212B bins ) which he always told me had to be sealed to the baffles, otherwise they sounded awful. I will take the grills off and tighten the screws, per your suggestion and see if that does the trick. You mentioned the torque, so I was wondering if it was any specific torque figure to work to, or merely 'as tight as possible 'on the drill's torque settings without stripping the threads ? Cheers
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dylan-penguinmedia Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 14 April 2011 Location: Brighton Status: Offline Points: 4575	Post Options Post Reply Quote dylan-penguinmedia Report Post Thanks(0) Quote Reply Posted: 05 November 2017 at 8:32pm
	Ian, I'd always use a hand tool for something like that, it's easier to 'feel' when things are tight, or stressed, if there's no documented torque figure to work to.

csg Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 17 September 2007 Location: bedford Status: Offline Points: 6086	Post Options Post Reply Quote csg Report Post Thanks(0) Quote Reply Posted: 05 November 2017 at 10:10pm
	yes, go with a decent philips no.2 hand screwdriver, definitely not a drill driver with a clutch. Snug to the point of just starting to compress the plastic. we now add a low strength loctite thread lock. For the record, and probably controversially we don't, and never have, use any kind of sealing gasket on the driver. We do line-x boxes and the driver will compress the coating to the point of creating a seal, so its probably a moot point. regarding cleaning contacts, and using any solvent cleaner, for me its always a quick fix, never a solution. Ive never needed to use any kind of cleaning agent on speakons or xlr's - that said we do have an approx 3-4 year replacement cycle on all cables, so we probably dispose of them before they start to fail. let us know how you get on.
	“The fact is this is about identifying what we do best and finding more ways of doing less of it better”

ceharden Members Profile Send Private Message Find Members Posts Add to Buddy List The 10,000 Points Club Joined: 05 June 2005 Location: Southampton Status: Offline Points: 11776	Post Options Post Reply Quote ceharden Report Post Thanks(0) Quote Reply Posted: 05 November 2017 at 10:53pm
	I prefer a thin foam gasket for mounting drivers. Monacor MDM-20 is my favourite. Warning, the glue is very strong and there's no peeling it back off if you need to reposition!

Safetyman Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 08 February 2009 Location: Brighton, East Sussex Status: Offline Points: 555	Post Options Post Reply Quote Safetyman Report Post Thanks(0) Quote Reply Posted: 06 November 2017 at 8:18am
	Hi Guys, Yes, the thought of using a drill/driver's clutch for tightening a nut or screw into any type of wood fills me with dread, especially if you forget to engage the clutch beforehand ! These modern drills have amazing amounts of torque. I prefer to use either a square shafted screwdriver( so you can use a spanner,if needed ) or a T handled one for anything up to 'really tight' in delicate materials. Deoxit D5 is really good for unbalanced leads, such as guitar jacks/sockets, as they seem to suffer from excessive oxidisation.
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Safetyman Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 08 February 2009 Location: Brighton, East Sussex Status: Offline Points: 555	Post Options Post Reply Quote Safetyman Report Post Thanks(0) Quote Reply Posted: 06 November 2017 at 8:24am
	I use a loctite releasable threadlock on all my Speakons, and have done for a number of years as it stops the cable holding screws from working loose in use.
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Safetyman Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 08 February 2009 Location: Brighton, East Sussex Status: Offline Points: 555	Post Options Post Reply Quote Safetyman Report Post Thanks(0) Quote Reply Posted: 09 November 2017 at 8:03am
	I should be able to complete the task of getting the drivers out, tightening the screws, as suggested by csg, and putting them all back in over the next few days. Should I do the same for the bass bins, which also have BMS drivers ?
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Safetyman Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 08 February 2009 Location: Brighton, East Sussex Status: Offline Points: 555	Post Options Post Reply Quote Safetyman Report Post Thanks(0) Quote Reply Posted: 09 November 2017 at 8:09pm
	Ok, took all the drivers out of each cab ( 2X BMS 8S215-8ohm & BMS 4524-8 OHM COMPRESSION DRIVER IN EACH ONE ), gave them a clean-up and replaced them in the cabs this afternoon. Could not get to the small PH screws, due to the horn above it. They all felt pretty tight, though. I will try them both again tomorrow afternoon, and see if they sound ok. Not replaced the compressed foam strip around the compression driver horn, but may have to do so in due course, if it is not forming an effective seal with the front baffle. Cheers :D
	Protect your hearing, and feel the music. MU South East Roving Safety Rep.

Safetyman Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 08 February 2009 Location: Brighton, East Sussex Status: Offline Points: 555	Post Options Post Reply Quote Safetyman Report Post Thanks(0) Quote Reply Posted: 10 November 2017 at 3:13pm
	CSG, If BMS drivers, you may want to check the tightness of the screws holding the diaphragm onto the magnet, we torque ours around once a year as they have a tendency to loosen up over time - and if they get loose enough to let the voice coil move backwards slightly the output will disappear. Ive seen this happen more than once on both their comp and coax 8" units. [/QUOTE] Does the above apply to the BMS 4524 compression driver too, please ? Cheers
	Protect your hearing, and feel the music. MU South East Roving Safety Rep.