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by Bill Fitzmaurice
Mon Feb 09, 2026 10:27 pm
Forum: Pro Sound Setup
Topic: Crowd Size and Physics of Pi(e):Yet another sizing post
Replies: 12
Views: 135

Re: Crowd Size and Physics of Pi(e):Yet another sizing post

Building a DR250 is not more difficult than an OTop 12 JArray, it just takes longer.
by Bill Fitzmaurice
Mon Feb 09, 2026 9:43 am
Forum: Pro Sound Setup
Topic: Crowd Size and Physics of Pi(e):Yet another sizing post
Replies: 12
Views: 135

Re: Crowd Size and Physics of Pi(e):Yet another sizing post

That amount of bass makes perfect sense when you look at an equal loudness chart.
by Bill Fitzmaurice
Fri Feb 06, 2026 10:26 pm
Forum: Pro Sound Setup
Topic: Crowd Size and Physics of Pi(e):Yet another sizing post
Replies: 12
Views: 135

Re: Crowd Size and Physics of Pi(e):Yet another sizing post

Bass is most prominent in the 60 to 90 Hz range, so if you want more thump that's where you boost EQ.
by Bill Fitzmaurice
Fri Feb 06, 2026 3:21 pm
Forum: Pro Sound Setup
Topic: Crowd Size and Physics of Pi(e):Yet another sizing post
Replies: 12
Views: 135

Re: Crowd Size and Physics of Pi(e):Yet another sizing post

I consult here, as a sound level monitor, so they don't get in trouble with the town: https://www.banknhpavilion.com/ The levels there in the FOH 75 feet from the stage with the loudest acts are 110dB'C' average, with 116dB'C' peaks. Most acts come in 10dB lower than that. If you're getting 96dB at ...
by Bill Fitzmaurice
Thu Feb 05, 2026 10:34 pm
Forum: Home Theatre/Stereo/Auto Sound
Topic: Tuba 18 driver/crossover questions
Replies: 7
Views: 81

Re: Tuba 18 driver/crossover questions

Ok, so you're saying run side one to the sub and then on to the mid/top, and then run the other mid/top direct to the amp? Wouldn't that put a 4-ohm load (given 8ohm cabs) on one side an 8 on the other with no crossover? No, because you still need a crossover between the sub and the main, which is ...
by Bill Fitzmaurice
Thu Feb 05, 2026 5:33 pm
Forum: Introduce Yourself
Topic: I really like what you've done with the place!
Replies: 6
Views: 76

Re: I really like what you've done with the place!

Seth wrote: Thu Feb 05, 2026 4:38 pm Sorry to be the bearer of bad news, Harly passed a good number of years back, maybe 10 or more years ago.
Harley's dad, Harley Sr, passed in 2012. Harley seems to be still around. https://wiza.co/d/windsor-engineering-g ... arley-dear
by Bill Fitzmaurice
Thu Feb 05, 2026 5:29 pm
Forum: Home Theatre/Stereo/Auto Sound
Topic: Tuba 18 driver/crossover questions
Replies: 7
Views: 81

Re: Tuba 18 driver/crossover questions

It's not the receiver that's summed, it's the content. The same material is on both channels. Therefore only one channel needs to be connected to the sub.
by Bill Fitzmaurice
Thu Feb 05, 2026 3:16 pm
Forum: Home Theatre/Stereo/Auto Sound
Topic: Tuba 18 driver/crossover questions
Replies: 7
Views: 81

Re: Tuba 18 driver/crossover questions

There's no reason to use L/R signals with a sub. Content below 80-100 Hz has been summed to mono since the 1970s.
by Bill Fitzmaurice
Sat Jan 31, 2026 5:15 pm
Forum: Home Theatre/Stereo/Auto Sound
Topic: Possible LPTHT use case...need input though
Replies: 6
Views: 80

Re: Possible LPTHT use case...need input though

That's a pro-sound sub, not HT. If you're looking for a direct radiator there's the Simplexx 15 Sub and Simplexx 18.
by Bill Fitzmaurice
Sat Jan 31, 2026 3:16 pm
Forum: Home Theatre/Stereo/Auto Sound
Topic: Possible LPTHT use case...need input though
Replies: 6
Views: 80

Re: Possible LPTHT use case...need input though

It should work, my TT 2x4 is right next to my recliner/listening position/home theater/home office.
by Bill Fitzmaurice
Wed Jan 28, 2026 1:41 pm
Forum: Simplexx
Topic: Which Eminence 18" Pro PA
Replies: 12
Views: 159

Re: Which Eminence 18" Pro PA

Higher power only equals higher output if there's enough Vd to make use of it. The OP is asking about the Simplexx 18, which isn't horn loaded.
by Bill Fitzmaurice
Wed Jan 28, 2026 11:42 am
Forum: Simplexx
Topic: Which Eminence 18" Pro PA
Replies: 12
Views: 159

Re: Which Eminence 18" Pro PA

Too slight a difference to matter.
by Bill Fitzmaurice
Tue Jan 27, 2026 10:41 pm
Forum: Simplexx
Topic: Which Eminence 18" Pro PA
Replies: 12
Views: 159

Re: Which Eminence 18" Pro PA

IMO they don't offer any benefit over DRs, and with the number of drivers are considerably more expensive.
by Bill Fitzmaurice
Tue Jan 27, 2026 8:10 am
Forum: Simplexx
Topic: Which Eminence 18" Pro PA
Replies: 12
Views: 159

Re: Which Eminence 18" Pro PA

If you want to go all out there's the LaVoce SAF184.03. 13mm xmax allows it to take 1,000w.