21" super scoopers

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   hello
ive just picked up a pair of pd2150's at a good price and was wondering what to build. Im wanting a sub that is good for 30 - 70Hz. Has anyone out there built the 21" super scooper, and if you have, what are they like?
Chris

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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: 6085	Post Options Post Reply Quote csg Report Post Thanks(0) Quote Reply Topic: 21" super scoopers Posted: 24 September 2007 at 8:43pm
	hello ive just picked up a pair of pd2150's at a good price and was wondering what to build. Im wanting a sub that is good for 30 - 70Hz. Has anyone out there built the 21" super scooper, and if you have, what are they like? Chris

Jhodas Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 04 June 2007 Location: United Kingdom Status: Offline Points: 1244	Post Options Post Reply Quote Jhodas Report Post Thanks(0) Quote Reply Posted: 24 September 2007 at 11:24pm
	What kind of music you playing mate? scoops are good for reggae, dub, DnB, dubstep, anything with deep rolling basslines. Not so good for techno, live work, house etc. If that's more your bag you'd be better building some 21" front loaded horns or reflex bins. The latter could be designed with WinISD, just feed in the T/S parameters which can be found on the PD website (www.precisiondevices.co.uk). The former you would have to find plans for. I don't think adapting the 1850 horn would work as the two drivers behave slightly differently. Someone else would probably be better positioned to comment. Hope this helps. Jho.
	Until the Lions have their own historians, tales of hunting will always glorify the hunter.

csg Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 17 September 2007 Location: bedford Status: Offline Points: 6085	Post Options Post Reply Quote csg Report Post Thanks(0) Quote Reply Posted: 25 September 2007 at 8:39pm
	Hello , cheers for that. Im aware of the limitations of scoops. My rig gets allsorts played thru it, but i was thinking of using 2 or 4 a side of these to add some depth to my current rig. I have currently got 8 stacks of nexo si2000 which i have just finished putting together from a huge pile of parts. What a rig!!! the bass section of this is a twin 15 horn with reflexed rear chamber. the bins are amazing bass bins with loads of speed and punch, but in groups of 4 they are giving up at 50Hz. thats plenty low enough for house etc, but i would like some more rumble for d&b etc. so if anyone out there has tried the 21" super scoop, let me know what you think! Chris

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: 11851	Post Options Post Reply Quote ceharden Report Post Thanks(0) Quote Reply Posted: 25 September 2007 at 11:31pm
	I'd think about doing a 21" version of the X1 to stick under the 15" horns.....

Mark James Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 15 January 2006 Location: rig side Status: Offline Points: 5306	Post Options Post Reply Quote Mark James Report Post Thanks(0) Quote Reply Posted: 26 September 2007 at 1:07am
	or maybey design a 21" band pass horn hybrid.... tuned to hit real low..... [might get 27hz] not sure though might be a little huge......
	insert silly sentence here

csg Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 17 September 2007 Location: bedford Status: Offline Points: 6085	Post Options Post Reply Quote csg Report Post Thanks(0) Quote Reply Posted: 26 September 2007 at 7:03pm
	by bandpass horn do you mean something like the old turbo flashlight subs - they were 21" i think - ill see what they run to. The big x1 idea also appeals - much smaller than scoops, but bandpass boxes never seem to throw, particularly outdoors unless you have a huge pile. Has anybody scaled up the x1 for the pd2150?

Mark James Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 15 January 2006 Location: rig side Status: Offline Points: 5306	Post Options Post Reply Quote Mark James Report Post Thanks(0) Quote Reply Posted: 26 September 2007 at 8:56pm
	no there was a mention of it a while ago.... yes by band pass horn i do mean like the turbo [and the hd15] hmmmmm ass did a nice 21" folded horn with either this or a similar driver iirc. and it hit 30hz in a group of four i think dont quote me though
	insert silly sentence here

CHAMPION Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 30 September 2004 Location: United Kingdom Status: Offline Points: 3667	Post Options Post Reply Quote CHAMPION Report Post Thanks(0) Quote Reply Posted: 24 February 2008 at 2:20am
	HBL has a scaled up version of the X1 for 21"
	Sticks n Stones

Jake_Fielder Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 08 October 2007 Status: Offline Points: 4236	Post Options Post Reply Quote Jake_Fielder Report Post Thanks(0) Quote Reply Posted: 27 February 2008 at 5:01pm
	did he actually model it, or was it literally scaled up? the MIGHTY DUB PASS will work with that driver i remember!!!!

CHAMPION Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 30 September 2004 Location: United Kingdom Status: Offline Points: 3667	Post Options Post Reply Quote CHAMPION Report Post Thanks(0) Quote Reply Posted: 27 February 2008 at 5:05pm
	think it was scaled, HBL aint made all his design, not tryed and tested Whats the MIGHTY DUB PASS ???????????????
	Sticks n Stones

Jake_Fielder Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 08 October 2007 Status: Offline Points: 4236	Post Options Post Reply Quote Jake_Fielder Report Post Thanks(0) Quote Reply Posted: 27 February 2008 at 10:56pm
	hahaha long story....... i'll get a link..... are you sitting comfortably?

Jake_Fielder Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 08 October 2007 Status: Offline Points: 4236	Post Options Post Reply Quote Jake_Fielder Report Post Thanks(0) Quote Reply Posted: 27 February 2008 at 11:01pm
	Read this: http://www.speakerplans.com/forum/forum_posts.asp?TID=9589&PN=3 Thats where it all started, read "JSG mashed"s posts Then read the thread he started: http://www.speakerplans.com/forum/forum_posts.asp?TID=12351 To be honest it would be great if someone would build them, but he possibly came on too strong!!