BillFitzmaurice.info

Thanks guys. Glad to still be kickin’ it. For the smaller builds the dado braces seem to work well for sure. It’s cool watching a bunch of buttered up random pieces fuse into a rock solid brick after the glue cures.

Primarily to maintain the box tuning below the horn cutoff frequency, among a few other design considerations.

Got a good link to it?

Hero shot in an attempt to make it look as imposing as a Titan or larger Tuba perhaps. FWIW, 18 inches cubed isn't exactly THAT small, but next the Klipsch La Scala in the background, well. :broke: And a closeup of the texture I was able to get out of the last bit of "Roll-on grade" Durate...

Access cover panels installed, terminal cup plumbed in, and everything screwed down. Couple coats of Duratex and it's ready to make some serious thump.

Placing the driver in its final home. Super tight at first glance, but Bill's got the dimensions just right to still allow a driver and hand to get in there to tighten things down.

Filled and sanded. Experiments with Duratex showed that a quality latex primer greatly reduces the required quantity of the final coating, in addition to improving the overall cosmetic appearance. Holes to attach the access cover panels had to be CAREFULLY drilled to prevent splitting the rear chamb...

All glued up, cured, and screws removed. Corners and access holes routed. Onwards to filling holes, leveling imperfections, and sanding, then milling the access cover panels.

Fitting up the remainder of the horn path. Keeping everything as damn square as possible.

This is 9 ply BB from a purchase about 4 years ago, before prices flew to coop for building materials. Remember when we thought $40 a sheet for this stuff was pricey? :shock: Standard width and using 7.5mm 5 ply for the bracing means dados around the interior. Baffle milled out and prepped for Hurri...

Took hiatus from building T48's this past year to knock out a T18 for our new Compass. The original plan was a slim Truck Tuba using an HL-10A, and place it just behind the front seats in the rear passenger area. However, once she got used the four doors and keeping stuff in/on the rear seats rather...

+1 to what Bruce said. :confused: Intermodulation distortion is an important parameter to control in the design phase of an audio system…but it’s not something to chase in an application. Pick up a few dusty copies of some old AES publications and you’ll see there’s very little, if any, new ground t...

I’m with AudioTK on this one…the plot looks like a high pass,when it should be a low pass. Check the filter settings. Running the subwoofer LPF too high (above 150) will also do this, but is easy enough detect with a voltmeter as the AC value will track in lockstep with the plot.

Welcome to forum! OP PM sent. Check your inbox please.

I’ve got a MiniDSP PWR-ICE running our bedroom system. Either the 125 or 250 is plenty. Spendy and requires a laptop to unlock all the features, but definitely get what ya pay for. That or try surfing FB Marketplace or Craiglist for a used “architectural” install power amp like an Audio Source or Sp...