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In Reply to: Re: Anyone know dimensions for Olson rear horn rectangular enclosures? RCA-Fan too posted by gopies on January 29, 2007 at 17:58:36:
(word processor or insert image on another image?)could "half-horn" have any advantage over regular bass-reflex? I believe RCA-Fan looked at a few half-horn for D130 besides the "Hawaii" V-vent. IF CXA Qts is really that low, then 15CXA might work for a box designed for D130.
a Karlson would have mild gain from ~55-200Hz over a reflex, low cone excursion but one may or may not like Karlson artifacts.
(one person's wife did not like the look of V-vent - maybe WAF can be tricky)
Seleninum ST324 slot tweeter might be good for a "helper"
Eminence C15CX in RCA-Fan V-vent box
C15CX impedance in RCA-Fan's V-vent enclosure
one builder's adjustable gap V-vent variant
D130 parameters from listing at Lansing HeritageFs = 40 / Qts = 0.25 / Qms = 4 / Qes = 0.27 / Vas = 297.3 / Eff = 6.7 / Pe = 75 / Xmax = 0.76 / Re = 6.3 / Le = 0.6 / Sd = 0.09 / BL = 18 / Mms = 60 / Flux = 1.2
P-Audio 15CXA listing
BM-15CXA
Description COAXIAL TRANSDUCER
Size (in.) 15.0
Power RMS (Watts) 250
Fs (Hz) 39.0
Xmax (mm) 2.75
Sensitivity 1w/1m (dB) 101
Qts 0.24
Vas (lt) 257.5
Magnet Material Ferrite
Follow Ups:
Thanx Freddy
The Paudio I have is the BM-15CX38. i am sorry if I have given wrong info. The manufacturers info is:
Fs 36Hz
Qes 0.23
Qts 0.22
Vas 287Lt
Xmax 4.5mm
These alter any of your findings?
Many thanx
John
Hi John - might be even closer to D130's factory specifications.RCA-Fan suggested one half-horn arrangement for D130 but its not been built. I'm not sure if Bill is fond of most coaxial. You might write him a few brief questions from Acoustichorn's website under " Contact "). Coax are an ok tradeoff for me.
AH Pages
Thanx
i emailed him about a month back, and he felt that the sepaker would do well in an Olsen horn enclosure, hence my search for this enclosure now. In the "Horn News April 2006", there is an article on it. I Presume you have seen/already know of it anyway. There is a corner horn enclosure there.
many thanks for your help'
best wishes
john
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