W bin??

Hi,

if you get a horn, and stick some holes in the rear chamber, you are losing a bit of efficiency but gaining a bit of low end extension (epending on what the rear chamber is tune to ibviously)

Edited by _djk_ - 23 June 2009 at 12:58pm

Those sims are looking good.

I think people in the past have tried to tune them so that the port output matches the output from the horn and it ends up ringing like a bell. 

deepss wrote: Hey Thanks Guys...Got heaps of stuff to go on there... I think I now understand bout the LF extension when the rear chamber is ported,and therefore has an effect on the excursion. So does that then mean,that a ported horn will reach lower frequencies but will not be as fast in its responce as a non-ported horn,like an 1850?

You cannot achieve a fast response, as the frequencies get lower. There is always going to be a lag for that is the nature of frequency.

Think of it as cycling. If a person is cycling 80 times per second he/she will be faster than someone cycling at 40 times per second. What the user must take in to the equation is the type of music material involved and where the dominant note lies.

One would not expect an HD 15 to perform stellar on Dub Step as it would on Trance for the heart of the bass line on both styles of music are, octaves apart. The HD 15’s horn length is around the same meters as the Eminence W Bin.

The PD 1850 offers a longer horn than the Eminence W Bin, which enables it to go lower. However there is a lag time as the frequency decreases. If one has only sealed W Bins and requires a lower frequency response than the horn can offer, porting the box is the only method to extend the response.

Some users want things in which the music material cannot offer. When this occurs, many will use some form of bass processing (DBX 120x, Behringer Ultra-bass, Aphex Aural Exciter and/or Audio Control Richter Scale) to generate synthetic bass lines on tracks that were never designed to offer that type of bass line. Using the above processors will increase the time delay in which will destroy the mix.

One must come to an understanding that some types of music material will not offer extended low frequencies despite what they claim. Spectrum & Waterfall Analysers tells you the truth where the heart of the bass line lies. Not, someone whose ears are not trained to detect the difference between two frequencies.


Best Regards,