Basically better for less.
Sensitivity is rather good as well.
Actually very good.
Guess sometimes even I forget
how large a equivalent magnet would
be if not neo.
Otherwise doesn't meet the request
of non whizzer. But find it useful regardless
for 2 way. Specially with 1 1/8" metal tweet
going down to 740 Hz resonance.
Making a 2 way very feasible, specially with
steep filters.
Aluminum Cone RS225-8
pretty well covered in many builds here.
Cast frame, Aluminum 28 Hz Fs
Sensitivity drops of course to go so low
with low distortion.
About 90 dB ish using the PS-220 and RST28A tweeter on 4th order
Sensitivity is rather good as well.
Actually very good.
Guess sometimes even I forget
how large a equivalent magnet would
be if not neo.
Otherwise doesn't meet the request
of non whizzer. But find it useful regardless
for 2 way. Specially with 1 1/8" metal tweet
going down to 740 Hz resonance.
Making a 2 way very feasible, specially with
steep filters.
Aluminum Cone RS225-8
pretty well covered in many builds here.
Cast frame, Aluminum 28 Hz Fs
Sensitivity drops of course to go so low
with low distortion.
About 90 dB ish using the PS-220 and RST28A tweeter on 4th order
Attachments
So, what do we have so far...Aluminum Cone RS225-8, Scan 22W-8534G00, Visaton B 200, PS-220-8. Then Fostex 206/208 come to mind. Is that it?
Adding to the list the SBAcoustics SB20FRPC30-8
https://sbacoustics.com/product/8in-sb20frpc30-8-paper/
https://sbacoustics.com/product/8in-sb20frpc30-8-paper/
Nice! what are you Doing here with the offset port location?For fairly generic folded ML-Voigt check out the damped duct variations.
We did a couple similar (FE108e∑, FF105wk, FF165wk) and indepentently) they basically look like this. This foldeing gets the driver at teh top of the box.
Beware adding a tweeter to a FR, it is hard to do right.
dave
It is one of the variables to get the response the shape the designer is targeting. @Scottmoose
I just did the drawings.
Something i meant to say earlier.
A sealed box has one degree of freedom — volume
A vented box has 2 degrees of freedom — box size, box tuning frequency
A TL/quarter wave design has many more degrees of freedom. I doubt i can name them all, but… 1/ axial length, 2/ box volume, 3/ influience of the shape of the pipe on the fundemental and its harmonics, 4/ drive offset, 5/ terminus offset, 6/ terminus resitriction, 7/ nature of the damping
dave
I just did the drawings.
Something i meant to say earlier.
A sealed box has one degree of freedom — volume
A vented box has 2 degrees of freedom — box size, box tuning frequency
A TL/quarter wave design has many more degrees of freedom. I doubt i can name them all, but… 1/ axial length, 2/ box volume, 3/ influience of the shape of the pipe on the fundemental and its harmonics, 4/ drive offset, 5/ terminus offset, 6/ terminus resitriction, 7/ nature of the damping
dave
And now another question: I need a good, proven design for a Voigt Pipe enclosure. 8" driver. I'm a skilled woodworker and can handle designs of (almost) any complexity. Thanks.
Depends on the 8in driver. 😉 Voigt pipes in the usual sense are no different to any other type of enclosure -good ones are optimised to a given set of driver requirements. So it's a case really of 'select & name your driver'; there may be something already there and if there isn't, a reasonable design can be worked up.