A 2.5 way thought

Bill Fitzpatrick · 6th April 2004, 11:12 PM

Say you are going to build a really good 2 way with expensive drivers and you would like to compensate for baffle step without adding another expensive mid-woofer and you want to avoid an MTM configuration.

Find an inexpensive woofer that will provide the same low frequency performance and mount it on the rear of the enclosure. Add the necessary zobel and series inductor and voila!, an extra 6 db of output in the right frequency range without breaking the bank.

Thoughts?

sreten · 7th April 2004, 08:42 AM

If you mount it on the rear therectically no c/o components are
needed at all, though normal BSC values will give rear radiation
similar to front mounted drivers.

TMM easily avoids the MTM configuration. MTM is only
needed for 2 way with BSC implemented in the crossover.

Usually IMO inexpensive woofers will compromise
the bass quality of your expensive bass/mid unit.

A variation on the theme is to go with a 6.5" sealed or
overdamped reflex bass mid, and add a 8" reflexed bass.

sreten.

coolkhoa · 7th April 2004, 07:22 PM

Quote:

Originally posted by sreten
Usually IMO inexpensive woofers will compromise
the bass quality of your expensive bass/mid unit.

I agree with sreten. And wouldn't a different woofer have a different character?

6th April 2004, 11:12 PM	#1
Bill Fitzpatrick diyAudio Member Join Date: Jun 2001 Location: Eugene, OR	A 2.5 way thought Say you are going to build a really good 2 way with expensive drivers and you would like to compensate for baffle step without adding another expensive mid-woofer and you want to avoid an MTM configuration. Find an inexpensive woofer that will provide the same low frequency performance and mount it on the rear of the enclosure. Add the necessary zobel and series inductor and voila!, an extra 6 db of output in the right frequency range without breaking the bank. Thoughts?

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7th April 2004, 08:42 AM	#2
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	If you mount it on the rear therectically no c/o components are needed at all, though normal BSC values will give rear radiation similar to front mounted drivers. TMM easily avoids the MTM configuration. MTM is only needed for 2 way with BSC implemented in the crossover. Usually IMO inexpensive woofers will compromise the bass quality of your expensive bass/mid unit. A variation on the theme is to go with a 6.5" sealed or overdamped reflex bass mid, and add a 8" reflexed bass. sreten.

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