New subs

[annunaki]

Can one of you model a single titanic in passive radiator design to see what it does? I am not real familiar with tuning those and I have never built one. Or even try a dual titanic with passives if possible. Thanks!

My goal is to reduce the box size and keep and f3 of 20hz + or - a hz or two one way or the other. Thats always the goal though isn't' ?

Boxes now are 45x17x15

I can get you down to 3.9 ft^3 net volume with 2 of the 15PR-1050 from AE Speakers.

This will give you a lower -3db point of 19.45hz and a lower -1.2db point of 22hz. The upper -1db point is 71.7hz. This models better than the isobaric configuration but requires a larger enclosure and two of the passive radiators.

This would allow you to do two separate subwoofers with higher efficiency too.

If you kept the other dimensions the same you could shrink your enclosure down to 38" in height. This would leave you .72 ft^3 for displacement (Bracing, woofer, passives, etc) of course.

 

[jeffsg4mac]

I can get you down to 3.9 ft^3 net volume with 2 of the 15PR-1050 from AE Speakers.

This will give you a lower -3db point of 19.45hz and a lower -1.2db point of 22hz. The upper -1db point is 71.7hz. This models better than the isobaric configuration but requires a larger enclosure and two of the passive radiators.

This would allow you to do two separate subwoofers with higher efficiency too.

If you kept the other dimensions the same you could shrink your enclosure down to 38" in height. This would leave you .72 ft^3 for displacement (Bracing, woofer, passives, etc) of course.

So that is one titanic, two passives and smaller box? Price wise it is a little cheaper than buying two more titanics for two isobaric boxes. There are pro's and cons to each I guess. Passives might sound better and be more efficient, Isobaric will have better power handling and a smaller box but will also be a more complicated build.

Hmmm, am I missing anything?

 

[annunaki]

So that is one titanic, two passives and smaller box? Price wise it is a little cheaper than buying two more titanics for two isobaric boxes. There are pro's and cons to each I guess. Passives might sound better and be more efficient, Isobaric will have better power handling and a smaller box but will also be a more complicated build.

Hmmm, am I missing anything?

Jeff that is correct.

You more or less have the two figured out, pro's & con's of each. The Passive option will offer more output as well. About +6db more than the isobaric option if employing the two separate subs in each scenario.

 

[jeffsg4mac]

Jeff that is correct.

You more or less have the two figured out, pro's & con's of each. The Passive option will offer more output as well. About +6db more than the isobaric option if employing the two separate subs in each scenario.

Well I got a couple of months to think about it. The weather is not good enough yet to build