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kiwijunglist
79
Apr 7, 2015
This gets really good reviews. The description is incorrect it has 5 speakers and 2 passive radiators. To describe as "7 speakers" is wrong and i doubt that description is on the Sony website.
Danny_Liu
1106
Apr 7, 2015
kiwijunglistHeyo,
Sony mentions 7 speakers. There's two little rings on the top as well that may be the radiators you are referring to.
http://store.sony.com/ultra-premium-hi-res-bluetooth-speaker-zid27-SRSX9/cat-27-catid-All-Players-Docks
tikkytak
25
Apr 7, 2015
Danny_LiuDriver Size(s) : Super tweeter (Top & front): ~19 mm (3/4 in.) dia. Midrange: ~50 mm (2 in.) dia. Subwoofer: ~94 mm (3 3/4 in.) dia.
So 7 speakers plus two radiators (one one each side of the centre 'sub')
Also, is the power cable not a wire?
Anonymouse
216
Apr 8, 2015
Danny_LiuThe rectangular panels are the passive radiators he refers to. They aren't speakers, just lightweight panels mounted on surrounds. They serve the same function as a port, reducing cabinet resistance to driver motion. Sticking them right next to the woofer like that is gonna push a lot of air back and forth, though; I'd expect them to be on the back, or at least further away. That placement will cost some bass extension.
The rings on the top (that there's no clear photo of in the listing) are likely the "supertweeters" mentioned in the copy. I don't see the point of them for Apt-X Bluetooth streaming content, though, and even if there was a lot of HF content in the mix, pointing them at the roof means none of it will make it to any listeners, since even normal-range tweeters are extremely directional and have very little output off-axis. And that's before opening the can of worms as to whether >20KHz content is even perceptual at all, under even ideal conditions, let alone adds anything to the music.
Basically, it probably works quite well, but there's a lot of design choices here that seem to have been driven more by marketing than engineering. A ported version without the supertweeters for like $100 less would be just as good blind-folded, I bet.
tikkytak said: "Also, is the power cable not a wire?"
Yeah, it needs a built-in battery or at least the option to buy one as an upgrade/accessory and a waiting socket to fit it. It becomes way more useful if truly wireless.
Man, if B&W added a battery and Bluetooth support to the Zeppelin it'd crush all competition in this field. Give the option to split it in the middle to increase stereo separation where you have room (like, the halves un-clip and pull apart on a cable, or just have terminals/posts/clips to hook them together with normal speaker wire or something) and it'd be even better.
kiwijunglist
79
Apr 8, 2015
Danny_LiuAhh didn't realize it had 4 tweeters. Having tweeters 90 degrees of axis is weird.
Passive radiator are the bas reflex radiators on the front. They are just a weighted diaphragm with no voice coil. they act similar to a port to give more output at the tuning frequebcy of the sub Woofer enclosure.
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