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bass system for open air?

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Category: Plans
Forum Name: New Projects Forum
Forum Description: Forum for new speakerplans projects, in memory of Tony Wilkes, 1953 - 2014
Printed Date: 19 April 2024 at 9:12am
Software Version: Web Wiz Forums 12.06 -

Topic: bass system for open air?
Posted By: airbell
Subject: bass system for open air?
Date Posted: 16 July 2009 at 11:37pm

I just want to know from you guys what you think
if its a better solution to devide a pa bass system
for outdoor events (open air) into
a subbass section and a medium hornbass-,
or if its better to have big hornsubs like the em acoustics mse 118??
(both should be able to play high up to ~150hz (above 150 the Mt122 or anything similar)

For example the B2 Sub (have build 2 clone in past)
or the X1 Sub up to ~55hz
and from 55 to ~150hz some 1850 horns for the "main - heavy bass"
or from 60hz some usb subs or mk3 horn e.g.....

or to use some hornsubs like the mse118 to cover all bass frequencies??

Found some plans here:

the hornlength is quite over 3m but it is also quite big.
with pd1850

would be glad to hear some opinions
and to discuss this topic Smile

Posted By: airbell
Date Posted: 20 July 2009 at 4:23pm
okay I'm sorry, i've seen this thing is already discussed in other topicsWacko.

then please tell me if its possible or senseful to use a large(long) bass-horn as a
"one-way bass"playing up to 150hz and if someone has experience with this..

and what do you think about the plan "" 
i've posted???

Posted By: wash with gasoline
Date Posted: 21 July 2009 at 3:12am
im a noob to hornloaded bass bins as i live in the usa and they are not verry popular over here.   But what i have read is that the more folds you have in a bass horn and the sharper the folds are, the more you will loose upper frequencys.  The horn you have posted has lots of sharp folds, so from the limited theory ive been picking up on that horn wont sound good from somewhere around 100hz and up   ...but like i said im a noob.       seems like a challenge to get a one way hornloaded bass bin, ive been looking at peoples ported horns on here with interest.   you might try doing a search for ported horn and take a look...

dry with match

Posted By: Fordy
Date Posted: 21 July 2009 at 11:28am
After much experimentation I settled on reflex sub 40 - 80 and short kick horn 80 - 160, but that's just my (2 kW) home hifi Smile

Posted By: airbell
Date Posted: 21 July 2009 at 10:37pm
i dont know too, but sounds like it make sense; the more foldings the more loss of higher (bass) frequencies because of the physical resistance from the wood (???but im not sureEmbarrassed?)...i've read yet in another topic someone had used mse-118 bins with kick or mid-bass bins.

i remember my mate works at "zitarock" here in berlin a few month ago.(some bands like oomph,some dark rock and industrial..) and they used the new martin linearray.sounds wonderful on such a big area and open air!!!but as i ask, "do they used hornspeakers for bass like wsx  or sth else?"
he just says "no, double 18" bass reflex!
but in a special order like these

and it sounded pretty loud and full even at a distance of 100m.
fore more directivity he says.i thought thats quite interesting.
but all in all he says it were very much of these speakers.
and so very hard to handle.but he says it was because of their
special sound they wanted.

anyway, i've read a lot of topics here now and think
4pd1850 and 1 b2 per side would be a damn loud and some good setup.
or someone writes now it is bullsh*t and/or you can use subbasshorns
up to 150hz or something like that and it sounds goodSleepy

Posted By: airbell
Date Posted: 21 July 2009 at 10:41pm
@fordy: 2kw horn hifi?kick bin horns?oh i dont want to be your neighbourSleepy

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