Hello all,
We just have a new home we are gradually moving stuff to. There is a “small” room that is going to be listening room and workbench space. Occasionally my wife will be allowed as a guest. The goal is to have a place for everything and everything in its place.
Over the years I have collected lots of drivers. Sometimes I rotate in 18 inch and 15 inch JBl woofers into the speaker stacks. Lately I have been enjoying a pair of 12 inch JBL 2204H’s with 10 inch JBL 2123H’s for mids. The cross over between the woofers and mids is settling in at 400Hz. This XO is pretty much in the omni-directional end of the frequency range. The large 10 inch midrange is increasingly directional as the frequency increases. I have been using and enjoying a pair of JBL 2425H compression drivers with FatialPro STH100 flairs. The current thinking is the shorter the horn and the faster the flair rate there is less traditionally expected nonlinear compressed air “horn” distortion. In fact if the thing is short enough and the flair rate fast enough that thing is no longer a horn it is now a waveguide.
One reason for using a large cone mid is to control dispersion; another reason is too completely eliminate horn distortion.
One concern with the old school JBL 2425’s is that long conical section of tube that is between the phase plug and CD exit. I am thinking that nonlinear adiabatic air compression distortion lives here.
Today I received a pair of FaitalPro HF111 8Ohm drivers. I am going to give these things a test drive. Then hook them up to the audio analyzer to compare them to the JBL 2425’s with the same faitalPro STH100 flairs.
I want to bring in a finished set of speakers and not have a bunch of drivers setting around.
Thoughts or comments?
Thanks DT
We just have a new home we are gradually moving stuff to. There is a “small” room that is going to be listening room and workbench space. Occasionally my wife will be allowed as a guest. The goal is to have a place for everything and everything in its place.
Over the years I have collected lots of drivers. Sometimes I rotate in 18 inch and 15 inch JBl woofers into the speaker stacks. Lately I have been enjoying a pair of 12 inch JBL 2204H’s with 10 inch JBL 2123H’s for mids. The cross over between the woofers and mids is settling in at 400Hz. This XO is pretty much in the omni-directional end of the frequency range. The large 10 inch midrange is increasingly directional as the frequency increases. I have been using and enjoying a pair of JBL 2425H compression drivers with FatialPro STH100 flairs. The current thinking is the shorter the horn and the faster the flair rate there is less traditionally expected nonlinear compressed air “horn” distortion. In fact if the thing is short enough and the flair rate fast enough that thing is no longer a horn it is now a waveguide.
One reason for using a large cone mid is to control dispersion; another reason is too completely eliminate horn distortion.
One concern with the old school JBL 2425’s is that long conical section of tube that is between the phase plug and CD exit. I am thinking that nonlinear adiabatic air compression distortion lives here.
Today I received a pair of FaitalPro HF111 8Ohm drivers. I am going to give these things a test drive. Then hook them up to the audio analyzer to compare them to the JBL 2425’s with the same faitalPro STH100 flairs.
I want to bring in a finished set of speakers and not have a bunch of drivers setting around.
Thoughts or comments?
Thanks DT
Yes! Your 'small' NorCal room must be bigger than my entire Scottish but and ben! 😉
Good luck with your man cave. Huge JBLs - think I'm a tad jealous! 🙂
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