Peter_F Posted January 20, 2018 Share Posted January 20, 2018 22 minutes ago, Rob181 said: Not sure I would want a pair of speakers held together by glue... But trust Mr 125...he is a smart guy...so will see how this pans out... I've been a cabinetmaker for over 35 years, I know my schit. Link to comment Share on other sites More sharing options...
Guest Posted January 20, 2018 Share Posted January 20, 2018 7 minutes ago, Peter_F said: I've been a cabinetmaker for over 35 years, I know my schit. YEa, my bad Rob, the box chippy maker is right, is legit Just want to pilot and run few 75mm screws for old time sake. Link to comment Share on other sites More sharing options...
Rob181 Posted January 20, 2018 Share Posted January 20, 2018 8 minutes ago, Peter_F said: I've been a cabinetmaker for over 35 years, I know my schit. Sensational...cause it is something I am schitehouse at... Now I know who to ask for advise... Thanks PF...love this site for the GREAT people... Link to comment Share on other sites More sharing options...
Guest Posted January 20, 2018 Share Posted January 20, 2018 @peter_f Is just weird, could have used 2 kg of screws easily, but no need used about 6 screws n total. particularly 2 x 600 liter enclosures, 6 screws have a few left over Link to comment Share on other sites More sharing options...
Peter_F Posted January 20, 2018 Share Posted January 20, 2018 2 minutes ago, 125dBmonster said: @peter_f Is just weird, could have used 2 kg of screws easily, but no need used about 6 screws n total. particularly 2 x 600 liter enclosures, 6 screws have a few left over It wouldn't hurt using that many screws but essentially its a waste of time and money as long as you have sufficient pressure on the joint while it cures. The trick with MDF is to use less screws if possible as the core has very little structural integrity as it splits and bulges very easily. Also, lightly sand the the face of the MDF butting up against the edge of the other piece to remove the waxy/smooth surface and allow the adhesive to penetrate and bond properly to both surfaces. 1 Link to comment Share on other sites More sharing options...
Guest Posted January 20, 2018 Share Posted January 20, 2018 (edited) Notes SQ 600 litres of enclosure "does things to reinforce low bass below 40hz at less than 1 watt at 90dB" is better than say, 300 litres Should implement some dsp filter might sound better Edited January 20, 2018 by Guest Link to comment Share on other sites More sharing options...
Guest Posted January 20, 2018 Share Posted January 20, 2018 8 minutes ago, Peter_F said: It wouldn't hurt using that many screws but essentially its a waste of time and money as long as you have sufficient pressure on the joint while it cures. The trick with MDF is to use less screws if possible as the core has very little structural integrity as it splits and bulges very easily. Also, lightly sand the the face of the MDF butting up against the edge of the other piece to remove the waxy/smooth surface and allow the adhesive to penetrate and bond properly to both surfaces. That's what I'm scared of !! :0 hi tech stuff, but it works better Link to comment Share on other sites More sharing options...
Guest Posted January 20, 2018 Share Posted January 20, 2018 Time to make a bit of an effort at getting both of these Twins going today Going to make an attempt at getting the things up some stairs and into my sound lounge. Pull out the drivers first, makes things easier. Grills can be done in a clean area. , Link to comment Share on other sites More sharing options...
Guest Michael Hope Posted January 20, 2018 Share Posted January 20, 2018 Yes, the photo of the dog for scale Cheers, was nice to catch up today on the phone Great to catch up with you as well mate. Very interesting and informative talk we had. Your dog will get sucked into the depths of that enclosure if you wound it up. Never to be seen again. Link to comment Share on other sites More sharing options...
swervyn Posted January 20, 2018 Share Posted January 20, 2018 26 minutes ago, 125dBmonster said: Time to make a bit of an effort at getting both of these Twins going today Going to make an attempt at getting the things up some stairs and into my sound lounge. Pull out the drivers first, makes things easier. Grills can be done in a clean area. , Looking good! Wondering what you are going to use for grille material to keep the boppers from punching their heads through the drivers? Link to comment Share on other sites More sharing options...
swervyn Posted January 20, 2018 Share Posted January 20, 2018 11 hours ago, 125dBmonster said: @peter_f Is just weird, could have used 2 kg of screws easily, but no need used about 6 screws n total. particularly 2 x 600 liter enclosures, 6 screws have a few left over Quite right as @Peter_F says, fixings (or clamps) are only there to hold the panels together until the adhesive dries, also helps to stop joints sliding around when gluing them up. Done properly the joint is stronger than the timber it is clamping. The whole box is made of plywood which is layers of ply held together with.....glue! Link to comment Share on other sites More sharing options...
Guest Posted January 21, 2018 Share Posted January 21, 2018 (edited) 1 hour ago, swervyn said: Looking good! Wondering what you are going to use for grille material to keep the boppers from punching their heads through the drivers? G'day Idea is to glue up a pine frame (no screws !!!) Not exactly sure how to keep those who mysteriously want to smash their head into the front of the box from getting to the cones. Drink less alcohol would be the first suggestion Other wise either gate mesh or trench mesh. quite like the idea of trench mesh as it will "bite back" to varying degree and can be built into the grill more easily/securely Will be fairly solid to be sure, not wanting to have to re cone a 21" driver for a while if at all. Grill material is meant to be some sort of thick double layer stuff for bass cabs so hoping it's fairly tough oh it's own https://www.ebay.com.au/itm/1pcs-Black-Thick-Speaker-Grill-Cloth-Speaker-Mesh-1-75m-Stereo-Grille-Fabric/263401627901?ssPageName=STRK%3AMEBIDX%3AIT&var=562418039222&_trksid=p2057872.m2749.l2649 https://www.ebay.com.au/itm/10-Pairs-Metal-Post-Socket-Type-Grill-Guides-Pegs-Plastic-Screws-Speaker-Parts/162416584878?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 Edited January 21, 2018 by Guest Link to comment Share on other sites More sharing options...
swervyn Posted January 21, 2018 Share Posted January 21, 2018 1 hour ago, 125dBmonster said: Idea is to glue up a pine frame (no screws !!!) Might want some screws in it if very little surface area for glue...lol Link to comment Share on other sites More sharing options...
Guest Posted January 21, 2018 Share Posted January 21, 2018 Link to comment Share on other sites More sharing options...
BioBrian Posted January 21, 2018 Share Posted January 21, 2018 Hi Matt, I've found Weldmesh very useful, and the 50 x 50 x 3 mm (wire diameter) one might be useful for your purpose. The one I've had access to is lightly galvanized and about $45 a sheet (8 x 4 ft). Should keep all but the most ardent headbanger out. It might be more effective with a slight pre-stress, as in a convex curve put into it, to stop both it, and the grill cloth, from flapping in sympathy (groove along) with the music. In which case, you might need 1 or 2 lateral tension wires to stop the grill frames bowing out in the middle. Just a thought. Now what might be all those interesting boxes you're wiring up? Link to comment Share on other sites More sharing options...
Guest Posted January 21, 2018 Share Posted January 21, 2018 @BioBrian (more importantly have the speakers operational) Twins in stereo, sounds well. Yes the weld mesh will be good Will listen to these for a while tonight and glue the baffle frame on 1 of them. Left the subs out of service Link to comment Share on other sites More sharing options...
Guest Posted January 21, 2018 Share Posted January 21, 2018 1 hour ago, BioBrian said: Now what might be all those interesting boxes you're wiring up? 3 x Holton dual mono, 250w. (6 x 250w) a miniDSP 2x8 a Holton 050. 150w x2 Link to comment Share on other sites More sharing options...
Guest Posted January 21, 2018 Share Posted January 21, 2018 @Tranquility Bass Could do with a better DSP Link to comment Share on other sites More sharing options...
BioBrian Posted January 21, 2018 Share Posted January 21, 2018 (edited) On 1/21/2018 at 9:06 PM, 125dBmonster said: glue the baffle frame on 1 of them ?? Those dirty things (grills) need to be separate-a-bull for real listening, don't they?!? Bring on the Holtons Edited January 29, 2018 by BioBrian (grills) Link to comment Share on other sites More sharing options...
Guest Posted January 21, 2018 Share Posted January 21, 2018 13 minutes ago, BioBrian said: ?? Those dirty things need to be separate-a-bull for real listening, don't they?!? Bring on the Holtons As you would imagine, 0.1mm excursion from 4 x 21" cones is plenty, all about the first watt Is a bit special, very pleased Link to comment Share on other sites More sharing options...
BioBrian Posted January 21, 2018 Share Posted January 21, 2018 Very exciting for me too, Matt, and probably lots of others here. 'Dirty' was referring to grills in general. Nothing to do with your design! Very fulfilling to see this project all coming together. Hope the masses appreciate it (ha ha). After the event may be the real fruition time. Keep looking after your self! Link to comment Share on other sites More sharing options...
Guest Posted January 21, 2018 Share Posted January 21, 2018 13 minutes ago, BioBrian said: Very exciting for me too, Matt, and probably lots of others here. 'Dirty' was referring to grills in general. Nothing to do with your design! Very fulfilling to see this project all coming together. Hope the masses appreciate it (ha ha). After the event may be the real fruition time. Keep looking after your self! Thanks Brian, yes has been almost a month to the day the battery saw was run. I think those that like clean bass from 25 to 250hz would enjoy these, which would be most folk. Link to comment Share on other sites More sharing options...
Tranquility Bass Posted January 21, 2018 Share Posted January 21, 2018 1 hour ago, 125dBmonster said: @Tranquility Bass Could do with a better DSP I sent you an email today. cheers david Link to comment Share on other sites More sharing options...
McCvinyl Posted January 22, 2018 Share Posted January 22, 2018 Great looking build there monster love the finish. I thought it was my neighbours with the music up loud last night! You could almost call them MONSTROUS! Link to comment Share on other sites More sharing options...
Guest Posted January 22, 2018 Share Posted January 22, 2018 2 hours ago, McCvinyl said: Great looking build there monster love the finish. I thought it was my neighbours with the music up loud last night! You could almost call them MONSTROUS! Thanks Mate, yes monstrous is a word that could be used for Twin 21"600 litre bass reflex enclosures Finish looks way better in the flesh and has gone very well, now to keep going and build some riot and all weather protection for them Link to comment Share on other sites More sharing options...
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