HD15s as low mids over 18" Scoop Bins

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   I consider building a 4-way system. What do you think of using the
HD15s as low mids over 18" Scoop Bins? (the question is primarily about
the HD15s, not the scoops ;-))

Ijaman.

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ijaman Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 01 June 2005 Location: Germany Status: Offline Points: 7	Post Options Post Reply Quote ijaman Report Post Thanks(0) Quote Reply Topic: HD15s as low mids over 18" Scoop Bins Posted: 01 June 2005 at 10:55am
	I consider building a 4-way system. What do you think of using the HD15s as low mids over 18" Scoop Bins? (the question is primarily about the HD15s, not the scoops ;-)) Ijaman.

Dom Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 25 February 2004 Location: United Kingdom Status: Offline Points: 1700	Post Options Post Reply Quote Dom Report Post Thanks(0) Quote Reply Posted: 01 June 2005 at 4:10pm
	Depends on what you call low mids. Use the scoops as pure subs, cross over to the HD15's for bass at around 70-80Hz and then over to your mid tops at about 140-160hz and they work fine. That way you work the HD15s purely in their most efficient band and you keep the scoops out of the problematic phase cancellation area of around 80hz in the case of a superscooper. I've always found balance between the two a bit tricky. 1 Scoop to 2 HD15's lacks the punch that I've grown used to from using just stacks of HD15's. 1 Scoop to 4 HD15's runs out of headroom on the subs far too quickly...
	"It sounded like a million fire engines chasing ten million ambulances through a war zone and it was played at a volume that made the empty chair beside me bleed."

Tom Umney Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 26 February 2004 Location: United Kingdom Status: Offline Points: 4954	Post Options Post Reply Quote Tom Umney Report Post Thanks(0) Quote Reply Posted: 08 June 2005 at 8:31pm
	Low mids I'd say is around 250hz-600hz. Edited by ToXiC

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: 09 June 2005 at 7:07am
	ijaman, I'm currently considering the same option but I'm not sure what I'm gonna use on the bottom yet. For the time being I have access to plenty of single 18" reflex boxes which are used from 35-160Hz. They sound ok, but do lack some punch. I'm about to try building some HD15's or variations on as I have some spare Kappa15LF's and then try sticking them between the 18's and the tops, probably crossed over around 80 and 160Hz. The HD15's are most effective as Dom said from 70-250Hz. As always it probably depends what sort of music you're going to be playing to what size of venue whether it's worth going for a four way system.