Loudspeaker projects & measurements

Driver tests, dipole designs, computer audio, and software. Notes and files from my own projects.

Recent updates

2026-07-03
Brisket Time Estimator
Cooking-time calculator based on Smoke Trails BBQ research.
2026-04-14
DroidMix5
Android control of MOTU 828 Gen2 levels and monitor output.
2026-04-08
ToneBurst v2.3
Stepped sine-burst generation and energy-decay analysis.

Driver type	Tests	Models
Tweeters	3	RAAL 70-10D · Scan-Speak D2004-6020 · Transducer Lab N26C-A
Mid-bass / midrange	15	BMS 5S117-8 · CSS VWR126X · Dayton ES140TiA-8 · Eton 3-401-A8-25MG · Motus UH130PW1 · Peerless 830992 · Peerless 835023 · SB Acoustics SB12NRX25-4 · SB Acoustics SB12NRXF25-4 · Scan Speak 10F-4424G00 · Scan Speak 12W-4524G · Seas Excel W12CY-003 · Seas MCA12RC · Tang Band W3-1878 · Vifa NE123W-04
Woofers	3	Acoustic Elegance IB15 · Acoustic Elegance LO10 · Faital Pro 8PR200

Test levels, measurement conditions, and available data vary by driver. Refer to the individual test pages.

Dipole loudspeaker model. Front, rear, side, and section views.

Slot-loaded open baffle with two 15″ Dayton RSS390HF drivers.

Design background and cabinet illustrations.

Alternative baffle geometries and earlier design iterations.

Program	Function	Download
ToneBurst v2.3	Generate stepped sine bursts; analyze and compare energy-time curves.	EXE ↓
DroidMix5	MOTU 828 Gen2 control for Android. See documentation for device compatibility.	APK ↓
Brisket Time Estimator	Brisket cooking-time and collagen-rendering calculator.	EXE ↓

Software notes, usage instructions, and limitations are on each program’s page.

Tone burst technical reference: Signal structure, ETC analysis, alignment, and noise measurement.
WAV test signals: Original burst, sweep, and impulse-response files.
Computer audio & DSP: Active crossovers, convolution filters, and system configuration.
Phono preamp comparison: RightMark Audio Analyzer results for Onkyo, Echo2, and iFi.