scoops |
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abrupt
Young Croc Joined: 04 January 2006 Location: United Kingdom Status: Offline Points: 1074 |
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Posted: 21 June 2006 at 6:15am |
if i had a pair of super scoops and a pair of normal scoops on my stack would i get phase problems because of the horn lenths or are they roughly the same
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its all about infrabass
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minaximal
Old Croc Joined: 26 September 2004 Location: United Kingdom Status: Offline Points: 1780 |
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what dimensions are your "normal scoops"?
its never a good idea to mix different box designs and drivers, but if they are similar then the db gain may be more usefull or noticable than the sound quality. |
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abrupt
Young Croc Joined: 04 January 2006 Location: United Kingdom Status: Offline Points: 1074 |
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i have super scoops at the moment and i thought rather than paying 400 for another pair [unloaded] i would by a pair of the fane design loaded for the same price
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its all about infrabass
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abrupt
Young Croc Joined: 04 January 2006 Location: United Kingdom Status: Offline Points: 1074 |
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does anyone know anything about scoops
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its all about infrabass
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jethrocker
Old Croc Joined: 07 June 2006 Location: Chiapas, Mexico Status: Offline Points: 1942 |
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abrupt, this is pure opinion, there's every chance that the two designs would blend ok, but I'd go for more super scoopers everytime. Sure they cost more to build/buy, thats because there is more wood in them to make them a true horn rather than an approximation. I honestly don't think any other scoop sounds as good... 200quid a bin sounds pretty good to me considering the amount of timber, and work involved. |
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UpComingSound
Registered User Joined: 21 June 2006 Location: United States Status: Offline Points: 393 |
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Question about scoops whats a good 18inch woofer to use in them? B&C EV Ciare RCF ? woofer and model please thank you
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mykey
Old Croc Joined: 18 August 2005 Location: UK/Indonesia Status: Offline Points: 9680 |
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if you have the drivers perfectly place side by side ie: the coils are in line and the same distance from you then there wont be no probs even if they are different sized drivers just make sure there coils are in line. upcomingsound..... id go for VOLT as 1st choice. pd1850 for 2nd. 3rd would be the rcfp300/s800. 4th fane xb, although i would like to try the 18sound drivers have heard so many good things about them apparently the czech guy who designs there stuff used to work for RCF Edited by mykey - 21 June 2006 at 11:36pm |
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abrupt
Young Croc Joined: 04 January 2006 Location: United Kingdom Status: Offline Points: 1074 |
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cheers for clearing that up im off to get some more now |
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its all about infrabass
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james folkes
Old Croc Joined: 08 January 2005 Location: United Kingdom Status: Offline Points: 3064 |
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surely that's only half the story... whilst the voice coil alignment may well be important for time alignment of the direct radiating element of the system, a scoop is a direct radiating/rear horn loaded enclosure and as such the output from the cab consists of both elements. surely path length differences in the horn length are likely to be far, far greater than the differences in voice coil alignment which i suspect could be no more than 1-2" maximum, almost trivial numbers at the frequencies involved? james. |
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mardy hippy.
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merlin gerwin
Registered User Joined: 07 May 2006 Location: United Kingdom Status: Offline Points: 14 |
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I've always believed that as the null in response happens around 80 Hz to 140 Hz depending on the horn length, that all the output will come from the horn and not the direct radiating front of the woofer. If your scoop changes from direct radiating to horn at 90 Hz and you crossover at 80 Hz into the scoop, then the output will be from the horn not the front of the woofer, or most of it anyway. I would think that its the horn lenght that would have to match if you use 2 diffirent scoop designs not how well the coils are in the same plane as its only the horn output your woried about. I would think that most scoop design horns are around 1.9 to 2.3 meters. So there could be a bit of cancalation, but I would not think it would be that bad. The null in response always looks to be around 3 times higher than the flare rate. A 2.2 meter horn has a cutoff of 40 Hz and the null apears at about 120 Hz. Why is that. Merlin G Edited by merlin gerwin - 22 June 2006 at 6:11am |
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Gramps
Young Croc Joined: 17 February 2006 Status: Offline Points: 1046 |
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No idea about Merlins query, but definately standing by James on this one. The output of the driver through the horn must be far greater than that of the direct radiating driver front, due to the efficiency gained travelling through the path of the horn. I am completely guestimating, but I would imagine that you'd probably get something in the region of 5-6db more output from the horn than the drivers front at any given power. Therefore alligning the horn sections, or ideally I guess, having identical horns/cabs, is going to make alot more difference than having the coils alligned.
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abrupt
Young Croc Joined: 04 January 2006 Location: United Kingdom Status: Offline Points: 1074 |
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would hd15's on top of scoops be ok or would i need a digital crossover to put them in phase |
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its all about infrabass
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