Bandpass boxes

[Daniel Snooks]

Lex wrote
> what is the general opinion on bandpass boxes around here... I am looking
to
> build a new box and after playing with winISD i am considering a band
pass.

Have a look at this gem ... I am thinking of purchasing it.

http://www.betteraudio.com/geolemon/isobp/isobp.htm

As you can see, there is a mountain of planning involved in building
bandpass (even without the isobaric thrown in) Also the margin of error is
incredibly small. However, the results can be orgasmic (if you like that
sort of thing). Typically a vented enclosure will give +3dB at the tuned
range over a sealed enclosure, but a bandpass will give +6dB. Basically the
boxes are large but the drivers are incredibly efficient within the tuned
range.

I say if you have the time, patience, and resources ... go for it.

--
Regards,
Dan Snooks

[Lex]

what is the general opinion on bandpass boxes around here... I am looking to
build a new box and after playing with winISD i am considering a band pass.

Lex

[n8 skow]

Bandpass are generally geared toward SPL, and as such, generally sacrifice
sound quality for that gain... On a side note - if this is your 'first' box
building venture - I'd recommend trying ported or sealed instead.
Designing/Building a bandpass box has no room for error.

n8



> what is the general opinion on bandpass boxes around here... I am looking
to
> build a new box and after playing with winISD i am considering a band
pass.
>
> Lex

[Lex]

any others?

lex

"n8 skow" > wrote in message
...
> Bandpass are generally geared toward SPL, and as such, generally sacrifice
> sound quality for that gain... On a side note - if this is your 'first'
box
> building venture - I'd recommend trying ported or sealed instead.
> Designing/Building a bandpass box has no room for error.
>
> n8
>
>
>
> > what is the general opinion on bandpass boxes around here... I am
looking
> to
> > build a new box and after playing with winISD i am considering a band
> pass.
> >
> > Lex
>
>

[Lex]

I am try to figure out box demsions and I have a

few more questions.
1 does winISD beta take into account driver displacement when determining
the need cf for a box?


2. does volume needed include the volume INSIDE of the port ( the air that
is actually in the port ) or is the port considered a cube removed from the
box volume




"Lex" > wrote in message
news:ifc1b.218399$o%2.100311@sccrnsc02...
> any others?
>
> lex
>
> "n8 skow" > wrote in message
> ...
> > Bandpass are generally geared toward SPL, and as such, generally
sacrifice
> > sound quality for that gain... On a side note - if this is your 'first'
> box
> > building venture - I'd recommend trying ported or sealed instead.
> > Designing/Building a bandpass box has no room for error.
> >
> > n8
> >
> >
> >
> > > what is the general opinion on bandpass boxes around here... I am
> looking
> > to
> > > build a new box and after playing with winISD i am considering a band
> > pass.
> > >
> > > Lex
> >
> >
>
>

[Daniel Snooks]

Lex wrote
> I am try to figure out box demsions and I have a
>
> few more questions.
> 1 does winISD beta take into account driver displacement when determining
> the need cf for a box?

No.

> 2. does volume needed include the volume INSIDE of the port ( the air that
> is actually in the port ) or is the port considered a cube removed from
the
> box volume

No, the port is considered a cube removed from the box volume.


--
Regards,
Dan Snooks