file FSP118LEVBPH - (Forward firing version of Staiper ES18BPH)

8 years 10 months ago #12273 by saul
what size were we aiming for again?

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8 years 10 months ago #12274 by saul
also rear chamber size.

big / small

lets explore the consequences

bigger: lower freq. ext., higher excursion - bumpy group delay

smaller : opposite.

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8 years 10 months ago #12275 by levyte357

saul wrote: also rear chamber size.

big / small

lets explore the consequences

bigger: lower freq. ext., higher excursion - bumpy group delay

smaller : opposite.


I just want closest thing to this or the Boke MA828.

I've heard them both doing 60-180, and they work..
Might even buy some Bokes (used), and cut them in half... smiley24


\"When in Vegas, do as the vegasians do\".

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8 years 10 months ago #12283 by mykey-
both not efficient enough, I have one that is, but I'm not sharing it with the world smiley20

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8 years 10 months ago #12285 by MAutopsy

mykey- wrote: both not efficient enough, I have one that is, but I'm not sharing it with the world smiley20

Is there some way you guys can protect the work so assholes don't build 100s of them in India and china?

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8 years 10 months ago #12287 by mykey-
close sites like this. Only have a selected few members that are vetted first

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8 years 10 months ago #12289 by bitzo

MAutopsy wrote:

mykey- wrote: both not efficient enough, I have one that is, but I'm not sharing it with the world smiley20

Is there some way you guys can protect the work so assholes don't build 100s of them in India and china?

pray

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8 years 10 months ago #12381 by pfl
60x60x60cm 18" BPH with 18B600

2pi 2,83v


0,5pi 1,41v


Unfortunately this size requires inverted driver install smiley24
I don't really get why it is unwanted.

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8 years 10 months ago #12382 by levyte357

mykey- wrote: both not efficient enough,


The Boke MA828 is plenty efficient in the 60-180 band with Fanes/PD186 mate, have tried them..

Having <100db sens at 60hz or less, but 105db sens 80hz+ means lots of horrible upper bass, and no perceivable thump with the kick drum. Don't want that.

mykey- wrote: close sites like this.


Sites like this are useful, when other sites like this are not working, or don't have freedom of speech..

Easiest thing to do is have locked plans forum, where only members of appropriate standing get access.

pfl wrote: Unfortunately this size requires inverted driver install smiley24
I don't really get why it is unwanted.


IMHO, response above 130hz is not quite as predicted, with inverted 18" drivers.

\"When in Vegas, do as the vegasians do\".

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8 years 10 months ago #12383 by bee

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