Search found 5470 matches

by Bill Fitzmaurice
Thu Jan 26, 2023 12:34 pm
Forum: Tips, Techniques and Supplier Links
Topic: Epique E150HE-44 5-1/2" DVC MMAG Extended Range Subwoofer
Replies: 2
Views: 23

Re: Epique E150HE-44 5-1/2" DVC MMAG Extended Range Subwoofer

Vd is 139.7cc. The Vd of an average eight, like the Dayton DCS205-4, is 180cc. The Dayton also has lower Fs. It's not a driver that I'd use.
by Bill Fitzmaurice
Sun Jan 22, 2023 8:14 pm
Forum: Home Theatre/Stereo/Auto Sound
Topic: David build
Replies: 32
Views: 1332

Re: David build

It's not the midranges, since the crossover is at 200Hz. Those deep peaks and valleys are classic boundary effect. The good news is that they're not severe. Using EQ to boost the nulls and reduce the peaks should do the trick. The response you have to 30Hz most speakers, at any price, can only dream...
by Bill Fitzmaurice
Wed Jan 18, 2023 10:37 am
Forum: Omni Bass/Key/PA Speakers
Topic: Finally! Omni 12 Tall Boy build
Replies: 177
Views: 4373

Re: Finally! Omni 12 Tall Boy build

There's no advantage to foam over polyester batting when they're of equal thickness.
by Bill Fitzmaurice
Tue Jan 17, 2023 1:01 pm
Forum: Home Theatre/Stereo/Auto Sound
Topic: Help picking sub, TTLS, Auto, or Tuba 18
Replies: 6
Views: 184

Re: Help picking sub, TTLS, Auto, or Tuba 18

At the minimum TTLS, two of them. Anything smaller won't add significant content, if any, to Cornwalls. Subs must be larger, a lot larger, than mains, not smaller.
by Bill Fitzmaurice
Wed Jan 11, 2023 7:35 am
Forum: Home Theatre/Stereo/Auto Sound
Topic: HT Tuba LP Possible to use 2-12” drivers?
Replies: 3
Views: 159

Re: HT Tuba LP Possible to use 2-12” drivers?

Possible, but two smaller cabs will work better than one larger one.
by Bill Fitzmaurice
Sat Jan 07, 2023 8:45 am
Forum: Tuba and Titan Pro-Sound Subwoofers
Topic: What voltage should I limit my...
Replies: 3
Views: 119

Re: What voltage should I limit my...

The limit voltage is based on the driver xmax, not the thermal power rating. It's explained in your plans in the 'Protecting Your Drivers' section. With 9.5mm xmax your driver has the same 50v limit as the 3012LF.
by Bill Fitzmaurice
Fri Jan 06, 2023 11:09 am
Forum: Build Threads
Topic: J210 Lite Build
Replies: 60
Views: 1784

Re: J210 Lite Build

It's not dangerous at all if you follow Rule #1, never have your hands near the blade, and Rule #2, always push the work into the blade. He broke both. I cut large circles on my router table, which is wood. After cutting the part to a square the diameter of the circle I put the center point of one e...
by Bill Fitzmaurice
Fri Jan 06, 2023 9:34 am
Forum: Build Threads
Topic: J210 Lite Build
Replies: 60
Views: 1784

Re: J210 Lite Build

He also rotated the piece in the wrong direction. You rotate the piece into the blade, with your hand on the piece on the side of it opposite the blade. He's lucky he didn't lose a finger or two.
by Bill Fitzmaurice
Fri Jan 06, 2023 8:02 am
Forum: Build Threads
Topic: J210 Lite Build
Replies: 60
Views: 1784

Re: J210 Lite Build

Idiot. He tried to rotate the piece while it was still in contact with the blade. He should have pulled the sled back away from the blade and then rotated the piece.
by Bill Fitzmaurice
Tue Jan 03, 2023 9:51 pm
Forum: Everything Else
Topic: Price Increase Q&A
Replies: 5
Views: 108

Re: Price Increase Q&A

When I introduced a new plan I did that and probably still will in the future, but it wasn't for an indefinite period. It was just for a few months, for the benefit of those who bought the entire set not long before the new plan was introduced.
by Bill Fitzmaurice
Mon Jan 02, 2023 4:20 pm
Forum: Everything Else
Topic: Plan Price Increases
Replies: 0
Views: 264

Plan Price Increases

The basic plan price has been raised to $19.95, the first increase in fifteen years. Inflation has hit us too. To help offset this the panel jig plans will be included in that $19.95 price for single plan orders. The panel jig will still be sent at no charge for all multiple plan orders.
by Bill Fitzmaurice
Sat Dec 31, 2022 12:04 pm
Forum: Everything Else
Topic: spl charts questions!
Replies: 11
Views: 818

Re: spl charts questions!

Measurements taken indoors will be dominated by boundary reflections and cabin gain. What they're good for is determining the optimal combination of placement and EQ for the best possible results at the listening position in your room, and bragging rights if they look really good. 8)
by Bill Fitzmaurice
Fri Dec 30, 2022 10:35 pm
Forum: Tips, Techniques and Supplier Links
Topic: Australian Options - Suppliers / Drivers etc
Replies: 128
Views: 79427

Re: Australian Options - Suppliers / Drivers etc

GT-1016 for $31.50 each? That's ten times the US price. :shock:
by Bill Fitzmaurice
Fri Dec 30, 2022 4:16 pm
Forum: Simplexx
Topic: Simplexx 1x12 questions
Replies: 22
Views: 2243

Re: Simplexx 1x12 questions

There's a better way to do it, now that I think about it. Get this app on your phone: https://play.google.com/store/apps/details?id=com.dom.audioanalyzer Set it to Spectrum Analyzer, 1/3 octave, C Weighting, Slow Response. Download a Pink Noise generator, play it through your amp/speaker. Then follo...