Speeeaaakers

Lately I spent more time in a speaker factory than in TechSpace office. Some time Louise was with me, some time I just went alone since he is still working for MS. Crafting a good speaker is not easy. Some looks pretty and sounds poor, some sounds good, but… I decided to customise a proprietary speaker for Muno, because there is no 3 inch speaker that was ever built for such a small sound box like Muno. We need to make some changes, to do some trade-offs and to tune many parameters. Fortunately we found a good speaker factory: they are professional and they are not very expensive. The boss Mr. Tang drives an VolksWagen van (Sharon). He is in same age as me and he likes exploring new stuff. Louise and I have drafted a speaker spec, some parameters are still not fixed since we are tuning the mechanical-acoustic design as well. Engineering a product is always a clay shooting game, your target is always flying. I even started to think about a multi-color edition of Muno. The speakers should look colourful and cool. Can he make it? I guess yes, but how good will that look like? I...

Wi Hi Fi

I love music, I guess this comes from my father who used to be an Peiking Opera artist. I bought an original limited edition Marantz amplifier in 2006 and a pair of KEF shelf speakers. CD was my major Hi-Fi source. But since I got my first iPhone in 2008, those big stuff are getting out of my ears: it is not convenient, especially the CD player and amplifier remote controls. I have been looking for a wireless bridge for several years: around 2010, there were some 2.4G wireless audio transmitters, but they never work with iPhone. Then Bluetooth started to be popular. Since I am a man in business, I am too familiar with Bluetooth, it will NOT give me the audio bandwidth that I want. Till lately that there are some Wi-Fi audio applications. I searched around and found one from Kickstarter (link). It is not my pie, because it does not provide S/PDiF optical interface, which I believe delivers un-touched digital sound source to amplifier, better than just a 3.5mm audio jack. Finally my friend Damon(CEO from IV-tech) recommended this (caution: the above 2 links are Chinese pages) to me. It supports AirPlay (I still am not very satisfied with its architecture, but anyway, it is Apple) and DLNA, it supports analog and digital output. Yeah, I got S/PDIF. With no hesitation, I ordered one. And tried it today. It works well. The setup is easy (not as easy as Muno will be). You see two cables: one is USB power, another is just the S/PDIF digital interface. According to the use manual, it supports lossless music formats...