I have a pair of APM-20ESs, they actually sound pretty awesome if they are connected to the right amp. I am using a late 80s Technics new class A midi system and the addition of super bass really makes these small speakers come alive. They have the 4 coil design as the woofers have four dust covers in a square pattern on the woofer. I believe some of the larger ones had five. I've also got a couple of Aiwa systems with flat diaphragm woofers and AFBS (Acoustic Feedback System), which actually mikes up the speakers to ensure what's coming out of them is the same as what is going in. I found the description of the "advantages" of FD speakers interesting, as I have noticed the sound is excellent when equidistant, but quickly loses bass if you move from the centre position or are elsewhere in the room. Perhaps there are advantages to _not_ having all the sound reach your ears at once, although I am comparing against newer, floorstanding models that are no doubt superior.
Thanks for sharing your experiences as we all have so much to learn from each other. I'd love to find a pair of ES's sometime. Thanks for watching and commenting!
@@new2uspeakers I found an article on the 66ES speakers that shows the back of the woofers, turns out they use a single coil with the diaphragm supported by several posts. I won't link as YT will probably delete the comment, but if you search "amazing sony apm-66es" the first results should be the Sound Oddity blog. 😀
I also see three things in common with both companies. 1) Technology and innovation, 2) outstanding marketing. And I think those to lead to 3) Longevity. There are probably some lessons to learn in that. Thanks for watching and commenting.
If only Bose only had even halfway decent drivers, a real tweeter, and a crossover they'd be pretty decent. As they are, they're utterly crap-tastic. Same with Sony's enclosures and crossovers - cheeeep n crappy.....
Yes, they have some similar concepts for similar reasons and benefits from what I understand. I’ve never seen a pair out in the world, but if I did, I would probably try to get my hands on them. Thanks for the reminder.
Since Fostex is still in the business , they may be the best source of info. It can't hurt to reach out to them. Many Japanese companies love their history and may have some support. Thanks for watching and commenting.
Hi st170ish, I have to admit , I am not familiar with BRM drivers so I can't comment. I did a quick Google search to see if I could look anything up named that , but I didn't find anything. If you send more info, perhaps I can help better.
The Kicker did inherit some of those genes. Square driver , but they are still using a cone , which is probably a good thing. Thanks for watching and commenting!!!
Compared to what Sony invested in the mid range and woofer, there’s certainly nothing special in the tweeter to put them at the top of any listening test. But they are interesting. Thanks for watching and commenting!
I really didn’t hear significant problems with the drivers, although the tweeter is nothing special. If they don’t sell soon, I was thinking of actually repurposing the drivers into a newly constructed box. I think that could improve them a lot. Thanks for watching and commenting!
You are absolutely correct, they are not "planar magnetic drivers" as can be found in many headphones and some other driver manufacturers. I rechecked the video, and I'm pretty sure I didn't state that, as I would not not want to confuse anyone. Hopefully you learned a bit about the Sony technology of the planar honeycomb using a traditional voice coil as described in the patent. Planar magnetic driver technology is a good idea for another video, and thanks for watching and commenting!!!!
