2020/05/07

An experiment with ScanSpeak 5cm SP unit

Due to the action restrictions for COVID-19, I can spend a lot of time for my house cleaning.

I discarded old pens, dry ink, and old mechanical pencils, so I had two empty pen stands.
An acrylic cylinder case purchased from the MUJI store, with a diameter of 8 cm and a height of 10 cm. The same thing has already disappeared in the MUJI web shop.

It would be a little fashionable if a speaker was installed in it. However, the only unit that fits this size is ... only ScanSpeak 5cm full range (5F/8422T03) from Stereo magazine appendix some years ago.

組立.JPG

When I removed the unit from the sleeping SP box and tried to match it, I needed something to support the unit. It was necessary to cut a 7mm thick MDF into a circle.
However, this has become a few daunting task. Using a free cone, I first made a hole in the unit diameter and then cut out the surrounding area, but the diameter slightly shifted. I decided to make some double-layered discs and pick out some of them. At this work, I spent all afternoon.

In addition, I was thinking of adding duct-like things to the acrylic pillars. There was no tool to open a hole of about 10 mm, and cracks were likely to occur when trying to forcefully open it, so only the hole for the cord was made.

計測.JPG

I finished this work and connected the unit. I measured the frequency response without using any sound absorbing material, and it was similar to a bare unit. It fell smoothly below 100Hz, and it felt like a closed type.

特性.PNG

When I tried to connect another unit here, there was no sound. The resistance value was not stable even when measured with a tester, and it was broken. I gave up listening to the stereo sound with the pair units.
This unit is still selling at the ONTOMO net shop, so I would like to try it again if I have the opportunity.

This time I will record it as an experiment.

Note: Handcraft speaker using ScanSpeak 5cm full range "5F/8422T03", 2017/3/20
posted by toons at 19:44 | Audio