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I made wrong version of Cubo15

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nemo View Drop Down
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    Posted: 13 February 2021 at 5:24pm
Hi everyone!
Sorry if I make a linguistic mistake, I'm learning English.
A few years ago I build Cubo 15 STANDARD, and I used a driver where Qts x Vas = 50.3
So I should make a Cubo Extended or Extra Extended due to:
Qts x Vas > 120, Cubo Standard
Qts x Vas = 100 - 120, Cubo Extended or Standard
Qts x Vas < 100, Cubo Extended
Qts x Vas < 50; Cubo 15 Extra Extended

Anybody tell me a general difference between the Standard and Extended version when I use a driver which has Qts x Vas = 50.3 ?
I guess that this affects the frequency response, but how?
What else?

Thank you! :)
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bass*en*mass View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bass*en*mass Quote  Post ReplyReply Direct Link To This Post Posted: 13 February 2021 at 7:04pm
the extended versions are tuned lower in freq., which leads to a smaller+lower bandwidth by design - the lower they are tuned, the "weaker" the driver could be without having much of a negative impact on the natural response/bandwidth/they are more forgiving re. TSP.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote nemo Quote  Post ReplyReply Direct Link To This Post Posted: 14 February 2021 at 11:30am
Thank!
Compared to the vented box, I understand it like this: I made a port too short in a vented box, so for example f3 is on 50hz level but I should make a longer port to obtain f3 at 40hz level to obtain the correct and the best freq response.

So if I want to obtain lower bandwidth in my Cubo I should remake it from a Standard to an Extended version, yes?
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bass*en*mass View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bass*en*mass Quote  Post ReplyReply Direct Link To This Post Posted: 21 February 2021 at 10:17pm
with your driver, extra extended might be best..
if you post  what driver it is exactly it would help.
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