Originally Posted by Mark Seaton
There is a thread started in the DIY forum which chrischaos created while I was typing the same suggestion on the previous page. You can find that thread here
. Most of the amplifiers they used have a simple 2nd order high pass which can be set to have almost no impact in the operating range or have a high pass in the 14-25Hz range. With the time some have to hunt for info around the net, I believe most of the info can be found or estimated plenty close. The performance might not be identical, but I suspect the DIY community and professionals can insure guys can remain functional, or even offer some possible upgrades.
Thanks Mark. I scanned the DIY forum a couple times for a thread but missed it. So the amps don't have any boost just an adjustable high pass, that's convenient! Anyone want to take a crack at generating a list of subs with their driver size, enclosure size, tuning frequency, and port measurements? Even just enclosure size driver size and port measurements would be adequate to back into tuning frequency. I know Chris posted the driver parameters but I'm not familiar enough with TS params to look at a set from one driver and determine which drivers might be comparable. Using the enclosure measurements I can certainly plug several drivers into the same sized enclosure and see which ones model well though
What I'm looking for would a chart like:
subwoofer, driver size, enclosure volume, tuning frequency (if known, will need either this or port size and length), port size (are they all round ports? If so just the diameter will suffice), port length, amplifier power
A2-300, 12", 2cuft , 28hz, 3" diameter, 10", 200W
Those aren't real measurements just an example. I tried to find information on the the A2-300 to fill in the actual values but didn't find anything in a quick search.
I think we should pull this information together here as there are owners that can measure their subs to approximate enclosure volume and port measurements - in the DIY section it's unlikely we'll be able to get that information (unless we can grab it from the interwebs as Mark suggested above