per@ddeswe.UUCP (mcumask=10) (01/16/89)
I am about to design a PA loudspeaker stack built up as
a 3-way active system with the subbas,bas-midrange and tweeters in separate
cabinets.
I have two questions:
1) what type of cabinet design (eg closed box, basreflex, exp-horn,
frontloadedhorn etc) is the best choise for each speaker?
If there is a different choise depending on the size of the room
where to use the system, please tell me what to use in each case.
2) Has anyone of You got the mathematic formulas for designing:
- Basreflex cabinet ?
- Exponential horn cabinet ?
- Frontloaded linear/exponential horn cabinet ?
What parameters of the speakerelements involved do I need?
The system will be used in rooms taking from 200 - 1500 people and
my idea was to drive the system with about 2x500W in the subbass, 2x300W
in the bas-midrange and about 2x200W to the tweeters using a 3-way phase
linear electronic crossover.
BTW: will it be sufficient with 1 18" subw. 1 12" bas-midr. in each channel?
Please email me directly. If You want to, I'll put the information
together in a kompendium and post it on the net.
Regards
Per Viklund
======================================================================
EMAIL: per@ddeswe.se (or: ...mcvax!enea!ddeswe!per)
SNAIL: Per Viklund VOICE HUMANA: int+46 40 18 25 50
Dansk Data Elektronik A/S FAX MACHINA : int+46 40 18 20 40
Celsiusgatan 38 D
S-212 14 MALMOE
SWEDEN
======================================================================torkil@psivax.UUCP (Torkil Hammer) (01/19/89)
In article <149@ddeswe.UUCP> per@ddeswe.UUCP (mcumask=10) writes:
#
#I am about to design a PA loudspeaker stack built up as
#a 3-way active system with the subbas,bas-midrange and tweeters in separate
#cabinets.
#
The guys across the street - make that strait - at Akustisk Laboratorium,
DTH, Lundtofte, have all you need, and then some.
If you call them, say hello from me (Thorkil Hammer, cand polyt '79).
A little further downstream is Fysisk Laboratorium,
H. C. Orsted Instituttet, Universitetsparken 5, Kobenhavn N.,
and they, too, might know more than you want to know.
If you call them, say hello from me (cand scient '71).
Nostalgia, nostalgia. Det er hunde koldt i Danmark.
It is also cold in California, but, like, not the same kind of cold.
#
#SNAIL: Per Viklund VOICE HUMANA: int+46 40 18 25 50
# Dansk Data Elektronik A/S FAX MACHINA : int+46 40 18 20 40
# Celsiusgatan 38 D
#
# S-212 14 MALMOE
# SWEDEN
#======================================================================
Trivia question: Hvornaar blev Sverige en forstad til Kobenhavn?