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Old 11th November 2002, 04:03 AM   #1
Ilianh is offline Ilianh  Canada
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Question open baffle?

ok, well i made those lil satelites using 4" cambridge drivers and 1" tweeters, and i havnt put the back part of the enclosures yet, i wanted to try what will happen if i put damping material and leave em open from behind.

as the first test i just runned some Diana Krall... and i was like "whoa, that sounds GREAT!!!!!!!"

im really impressed,
then i tested some other musics, and found out that the open baffle makes the mids REALLY clear and it goes very well on latin/jazz, but really sucks on hip hop..

then made another test, closed the second satelite (it has a vent)as it was calculated.

and made the same test again, and i really think the open baffle one sounds GREAT on some musics way better than the vented one..... sucks on others like hip hop (not that i listen to that too much...)

made another test, left the enclosure open, but whitout damping material, and it was awful, too much echo (room acoustics?)

actualy, vented has more bass less mids
open baffle has really clear mids, no bass

(i have a subwoofer taking care of the bass)

is this pure luck? or what?

i'll post pictures tomorow.
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Old 11th November 2002, 05:45 AM   #2
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I've found the same thing. I did a test open baffle over the weekend with some spare drivers I had and was extremely pleased with the quality of the sound. You won't get bass unless you EQ the low end, but the pure quality is very very good.

Steve
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Old 11th November 2002, 06:06 AM   #3
halojoy is offline halojoy  Sweden
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Default Open baffle search

I searched for info on open baffle for DIY.
Linkwitz Lab recommends open baffle dipole.

A lot of good to discover regarding Speakers, with starting point from this page:

http://links.epanorama.net/links/audiospeakers.html

This guy Steve has a real advanced open baffle project
with lots of photos:

http://sho.mystarband.net/
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Old 11th November 2002, 02:08 PM   #4
Ilianh is offline Ilianh  Canada
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thx for the replies
I tried to find a simulation program of some kind to calculate open baffle speakers, didnt find any

hum...maybe triyng stuff until i get it right and try to make some kind of conclusion out of that ?

after all... its all a matter of personal taste
heh
my mom listens to some old clock/radio that sounds like crap.. and she likes it.... shes lucky...i have to pay big money for drivers and all in order to enjoy my music.. and shes happy with a 10$ clock/radio!
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Old 11th November 2002, 11:17 PM   #5
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You may find that a simple box with the back off makes the enclosure too deep and hence the echo. My test baffles are 3/4 inch mdf with two inch side panels.

Steve
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Old 12th November 2002, 03:22 AM   #6
Ilianh is offline Ilianh  Canada
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Well... i just add some poly fill for pillows and theres no more echo... just perfect mids and highs out of relativly cheap tweeters and somehow good mid drivers

sorry i didnt post pics today, still waiting for this varnish to dry before remounting the drivers
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Old 12th November 2002, 10:52 AM   #7
Nicke is online now Nicke  Sweden
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Quote:
I tried to find a simulation program of some kind to calculate open baffle speakers, didnt find any
Start by reading this :
Design models for dipoles

Actually,read all at Linkwitzlab if you are going for dipoles.

Nicke
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Old 13th November 2002, 12:11 PM   #8
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You might want to check this page and its links for dipole susb as well, there are a couple of spreadsheets there.

http://www.diysubwoofers.org/dipole/

Steve
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Old 14th November 2002, 11:47 PM   #9
Ilianh is offline Ilianh  Canada
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ok, sorry for the delay, heres the pics...
Attached Images
File Type: jpg satelite2.jpg (45.6 KB, 432 views)
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Old 14th November 2002, 11:48 PM   #10
Ilianh is offline Ilianh  Canada
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another one
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File Type: jpg satelite1.jpg (43.2 KB, 419 views)
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