ura-project

This time, I would like to introduce the work of my son, a fourth-grade elementary school student. He won first place at the 18th Shibaura Institute of Technology Robot Seminar National Tournament...

Donated carpet speakers

We donated the first carpet speaker prototype to the Kobe University Special Needs School. With the completion of SYRINX , we will donate some of our past prototypes for use only in public servi...

From carpet speakers to SYRINX

It wasn't until I got my hands on the Crypton KS-1 HQM that I first became interested in high definition sound. As a speaker for PC, it has a built-in DAC, and compared to other high-end speakers, ...

Levena gear and seat post replacement

My child's 18-inch Bridgestone Revena bike has gotten too small, so I replaced the gears and seat post. [What we prepared] Replacement crank 36T 127mm (Rin-ei W-guard gear crank set) Seat...

leather carpet speaker 3 long

"Leather-wrapped carpet speaker [long]" is now complete. (Prototype No. 7) [Specifications] Speaker unit ALPAIRE7 v3 (ported from short version) Tube length 800mm Cylinder diameter φ=13...

leather carpet speaker 2 short

The tanned leather version of the "Leather-wrapped carpet speaker [short]" has been completed. (Prototype No. 6) [Specifications] Speaker unit ALPAIRE7 v3 Tube length 300mm Cylinder dia...

LAN cable is the strongest speaker cable

This time it's about speaker cables. [LAN speaker cable] When researching speaker cables on the Internet, you come across some rather dubious stories, such as LAN cables having better sound. ...

leather carpet speaker 1 short

The fifth prototype of "syrinx," the "leather-wrapped carpet speaker," is now complete. [Specifications] Speaker unit ALPAIRE7 v3 (ported from prototype 1) Tube length 300mm Cylinder di...

Inexpensive, easy, high-quality wound cardboard speaker

The third prototype of "syrinx" is a rather suspicious-looking rolled cardboard speaker. [Rolled cardboard speaker] Roll up a piece of cardboard and place the speaker on top of it. That's all...

Backloaded horn speakers are musical instruments

The second prototype is a back-loaded horn speaker. [Motivation] When I tried making carpet speakers, I was interested in back-loaded horn speakers, which are popular among DIY builders. Ther...