Search found 6247 matches
- Mon Sep 08, 2025 9:39 pm
- Forum: Omni Bass/Key/PA Speakers
- Topic: Phase plug diameter
- Replies: 1
- Views: 165
Re: Phase plug diameter
When I prototyped the cabs I tried various phase plug sizes for the two crossover options. What worked best is what made it into the plans.
- Mon Sep 08, 2025 6:11 am
- Forum: Tuba and Titan Pro-Sound Subwoofers
- Topic: Is it possible to build a titan 48 for a 18inch driver
- Replies: 6
- Views: 151
Re: Is it possible to build a titan 48 for a 18inch driver
"Aerodynamics are for those who don't know how to build engines."- Enzo Ferrari
"Eighteens are for those who don't know how to build horns."- Bill Fitzmaurice

"Eighteens are for those who don't know how to build horns."- Bill Fitzmaurice

- Fri Sep 05, 2025 9:47 pm
- Forum: Omni Bass/Key/PA Speakers
- Topic: OTop8 dispersion angle and Bi-amping
- Replies: 79
- Views: 6666
Re: OTop8 dispersion angle and Bi-amping
The widest dispersion comes with the melded array.
- Wed Sep 03, 2025 9:52 am
- Forum: Simplexx
- Topic: Simplexx 10 Driver
- Replies: 1
- Views: 226
Re: Simplexx 10 Driver
Flip a coin. The GRS looks like a real bargain.
- Fri Aug 29, 2025 1:31 pm
- Forum: Tuba and Titan Pro-Sound Subwoofers
- Topic: ultralight plywood?
- Replies: 8
- Views: 215
Re: ultralight plywood?
That will work, but you double the build time, and if the panel placements aren't precise you won't be able to get the second side on. If you end up with a thin veneer use screws when assembling so you're not relying purely on the adhesive.
- Thu Aug 21, 2025 6:48 am
- Forum: Tuba and Titan Pro-Sound Subwoofers
- Topic: titan 39- should I use chamber reducers with a 10' speaker with Fs=32hz?
- Replies: 2
- Views: 138
Re: titan 39- should I use chamber reducers with a 10' speaker with Fs=32hz?
Chamber reducers are not used in the T39. The 10RS430 is not a recommended driver as it's far more expensive than twelves that have higher displacement.
- Wed Aug 20, 2025 2:22 pm
- Forum: Tuba and Titan Pro-Sound Subwoofers
- Topic: finish on interior baffles?
- Replies: 1
- Views: 93
Re: finish on interior baffles?
It will make no difference. Horns don't work like guitar bodies.
- Mon Aug 18, 2025 9:05 am
- Forum: Home Theatre/Stereo/Auto Sound
- Topic: High efficiency 15 in tuba ht
- Replies: 5
- Views: 158
Re: High efficiency 15 in tuba ht
The combination of higher Fs and lower Qes will kill the low end. There's nothing to be gained using a pro-sound driver in the THT, and much to be lost. The PD.1551nr1 isn't sub worthy, in any cab.
- Fri Aug 15, 2025 12:04 pm
- Forum: Tuba and Titan Pro-Sound Subwoofers
- Topic: Driver choices for a Tuba 24.
- Replies: 40
- Views: 6709
Re: Driver choices for a Tuba 24.
Nowhere in the plans is usable frequency mentioned because it's a red herring. What is listed is the Fs range, but what mainly determines the low frequency response of a horn is the horn, not the driver. SPL charts are posted for all the subs so you know which meet your needs and which do not.
- Thu Aug 14, 2025 6:45 am
- Forum: Home Theatre/Stereo/Auto Sound
- Topic: THTLP higher frequency performance (100hz+)
- Replies: 3
- Views: 170
Re: THTLP higher frequency performance (100hz+)
The folds act as a low pass filter yes, but that's a good thing. It's one reason why THD is far lower than any direct radiator. However, when the distance between the panels and the bends gets longer relative to the wavelengths being passed response gets more ragged. Localization isn't an issue unle...
- Wed Aug 13, 2025 4:06 pm
- Forum: Omni Bass/Key/PA Speakers
- Topic: Otop12 integration
- Replies: 9
- Views: 201
Re: Otop12 integration
The only way to know is by testing them at a distance with and without the time align. There are factors that influence the result with close measurements. That's why I measure at no less than 2 meters, while Tom Danley measures at 10 meters.
- Tue Aug 12, 2025 8:58 pm
- Forum: Omni Bass/Key/PA Speakers
- Topic: Otop12 integration
- Replies: 9
- Views: 201
Re: Otop12 integration
Try it again at a normal listening distance.
- Tue Aug 12, 2025 4:04 pm
- Forum: Omni Bass/Key/PA Speakers
- Topic: Otop12 integration
- Replies: 9
- Views: 201
Re: Otop12 integration
Distance to the mic? Mic height? Ideally you want it on the axis where the two cabs meet. With the cabs that high and the mic relatively close you'll see some phase zits that should smooth out with distance.
- Sat Aug 09, 2025 6:12 am
- Forum: Tuba and Titan Pro-Sound Subwoofers
- Topic: Building 2 tall Truck tubas to replace a large underseat dual 12" wedge box
- Replies: 1
- Views: 123
Re: Building 2 tall Truck tubas to replace a large underseat dual 12" wedge box
The AT takes an eight or ten, but not a twelve.
- Thu Jul 31, 2025 8:37 am
- Forum: Everything Else
- Topic: Quality Control ???
- Replies: 5
- Views: 178
Re: Quality Control ???
Is it genuine Neutrik?