Sealed stereo loudspeaker box volume for VISATON BG 20

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noyan

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Joined 2004
#1
Hello,
I want to build full range stereo loudspeakers with Visaton BG20 speaker. Can you help me please what will be the good volume for the sealed cabinets?
I saw that it was given as 1,06 ft3 and 1,66 ft3 and i am confused.
Thanks a lot for your help
Noyan

https://www.visaton.de/sites/default/files/dd_product/BG 20.pdf
https://www.visaton.de/en/products/drivers/fullrange-systems/bg-20-8-ohm
https://www.visaton.de/en/products/drivers/fullrange-systems/bg-20-8-ohm
https://www.parts-express.com/Visaton-BG20-8-8-Full-Range-Speaker-with-Whizzer-Cone-292-548
 
#3
From that it looks like he Visaton would be maximally flat in a 70 liter box. Stuffing will add a bit to the effective volume. That's 2.4 cubic feet.
You might want to go smaller for a higher box Q. That would give you a bump up in the low end.
1 cubic foot would give you a bump in the low range, but it would not play quite as low.
1.66 ft (47 liters) gives a nice Q of 0.8 which should sound nice and clean, but not too lean.
 
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#4
Pano said:
From that it looks like he Visaton would be maximally flat in a 70 liter box. Stuffing will add a bit to the effective volume. That's 2.4 cubic feet.
You might want to go smaller for a higher box Q. That would give you a bump up in the low end.
Click to expand...
Thank you very much for your answer. Just for confirmation, 2,4 cu-ft or 70 Lt for sealed cabinet right?
 
#5
Yes, for flattest response. But I would go with 47 liters for a Q of 0.8 Smaller box size and there is only a 1.5dB bump, which will sound nice anyway.
A 2.4 foot box seems too much for an 8" driver.
Next you have to look into Baffle Step Correction. 🙂
 
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#6
Many thanks for your comments. Ok. I will go with 47 Lt.
Last question: Does it give normal bass or better to add a 10-12''supplementary bass unit in this cabinet?
I don't listen disco 🙂 listen jazz, blues, rock,...
Thank you again
Noyan
 
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#7
It's an 8" fullrange, so will have decent bass. It won't play the lowest of the lows, or thump real hard, but it should still sound rich. Try it in ~47 liters with medium stuffing and hear if it suits you. You can always add a sub or two later if you need more bass oomph. FWIW, I've used 8 and 6.5 inch fullrange in transmission line enclosures and been very happy with them. They always got positive comments.
 
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