Julien ARNAUD ⁽¹⁶⁾

I quite like my MX-30 but the rims and the ride height always seemed off. Using H&R springs (-35mm front, -40mm rear) and Borbet "V" rims, the result is most satisfying. I carefully researched tires, as I was forced to go from 215 to 225 width and didn't want to sacrifice too much range to that. It is after all, a tiny 32kWh battery ! Turns out Goodyear Eagle F1 Asymmetric 5 in 225/45/19 have better rolling resistance (A) than stock Bridgetone T005A tires in 215/55/18 (B) without sacrificing on…

I designed a soundsystem for my Renault Twizy around the following elements Subwoofer The subwoofer enclosure was designed to fit in the narrow space behind the passenger seat. This gave the subwoofer a kind of rounded/organic shape. From this shape I got an internal air volume. I looked for speakers that would work in such a small volume and still produce the desired level of bass (I aimed for around 45Hz -3dB). The software popped out a 6.5" Audax with dual coils. The simulation has some compromises though, at full…

I replicated the results of Connor Bolton, Sara Rampazzi, Chaohao Li, Andrew Kwong, Wenyuan Xu and Kevin Fu. in "Blue Note: How intentional acoutic interference Damages availability and integrity in hard disk drives and operating systems". I set up one of my DIY Cabasse Spheres in front of a Fujitsu MJA2160BH. Doing a frequency sweep from 850Hz to 1.1Khz at around 102 to 105dB. When reaching close to 975Hz +/- 25Hz, the bitrate of the read file drops from 70MiB/s to a few KiB/s. Data was generated from /dev/random, secondary…

Components Intel i7 7700K 16 GB DDR4 512 GB NVMe 2x nvidia GTX 1080 in SLI 750 W Corsair PSU 3x 43" 4K TVs (11520 x 2160 px) ProSimu T1000 2DOF Fanatec Clubsport 2.5 Wheel base ClubSport Wheel Rim SPARCO® Rally ClubSport Porsche 918 Wheel ClubSport Steering Wheel F1® Esports V2 Fanatec Clubsport V3 Pedals Fanatec ClubSport Shifter SQ V 1.5 4.0 audio using 2x 8" Samson Resolv A8 active monitors (front) 2x 6" Samson Resolv A6 active monitors (rear) The whole system draws about 460W idle, and around 700W…

Unsatisfied with my JBL SB210 low frequency, I designed and built replacement enclosures. The SB210 is a dual 210mm subwoofer, using ceramic cones in a polymer enclosure. Specifications of JBL's original SB210 are My redesigned enclosure offers The first hurdle was the absence of datasheet for the speakers themselves, as they were never distributed outside of the SB210 system. After contacting JBL Professional, they were kind enough to provide me with the data. These specifications were entered in Dominique Petoin's database and you can now find it there. As I was…