I bought a pair only to find out that the transmitter and speaker had to sit 2 inches apart to work. Took them back the same day.
Not a good experience.

Ted

"First, cut the range in the ad by half."

Fair enough.

"Next, it's in the 900MHz range, same as your wireless router and microwave oven, so don't expect concert quality."

This is just plain wrong. Wireless routers and microwave ovens operate in the 2.4 Ghz range, not 900Mhz. Really large industrial microwave ovens operate at 915 Mhz, but it's highly unlikely he has one anywhere near his house.

UHF Wireless microphone systems operate in the 550-700 Mhz range and they can be considered concert quality since they are often used AT CONCERTS! Operating in the 900Mhz band does not automatically mean that the wireless speakers will sound like crap. If they happen to sound bad, it isn't because they are using 900Mhz.

"No, I've never used them."

If that's the case then what could possibly make you an authority on them?

Now, I HAVE used 900Mhz wireless speakers and for getting some background music out on the patio, most of therm work just fine.

I have only just noticed this post, but, having had experience of wireless speakers over the years, hope I can give some useful input.

I assume you mean totally wireless for the speakers i.e. no mains lead to plug in as well as no speaker cables. I recently bought some Griffin Evolve Wireless speakers and, despite some comments from previous purchasers, have found these fit the bill for me. They are rechargeable on the base station (which is also an iPod docking station) simply by locating on the contact points. The batteries are non-user replaceable lithium-ion (could be a problem in the future) but are claimed to give about ten hours of usage when fully charged - that took a couple of hours.

The wireless range is about 45 metres from the base station and the rating is 12 watts rms per speaker. The base station is not only an iPod docking station but also has phono connectors in and out for connecting other audio devices. I have tried this in several configurations (input and output) with no problems and acceptable results. No, they will not give 'concert' performance sound but I have heard many 'quality' wired speakers that do not do so either. The results, sonically, are more than adeqaute for good quality sound.

A nice feature of these speakers is that if used in the stereo setting the designation of which speaker is left or right is determined by which side of the base station you place each speaker. No matter if it was left speaker the previous time you used the speaker, if you place on the contacts on the right side of the base station then it becomes a right side speaker. This makes life a lot simpler than wireless speakers I have used over the years - no labelling up of each speaker to worry about, or pulling off the battery cover then removing batteries to find out which side to which the speaker had been switched.

They are not cheap, though often cheap solutions do give cheap results. Have a look on Amazon fo pricing.

I cannot find the broadcast frequency for the unit, though I understand that this is country specific - I am in the UK

I hope this is useful information.

Couple of curious questions about the left/right placement ...

If you don't have a visual source (such as a movie or TV show) to correlate with, does it matter if you have left on the left and right on the right? Would you really care if the bass and piano switched sides? For that matter, do you never turn around to talk to a different guest/family member and end up with your back or side towards the speakers?

Assuming instead that the answer to the above question is "YES! It matters to me", how hard is it to grab a Sharpie marker and write L on one speaker and R on the other?

Interesting question, and one I hope that anyone who did wish to answer 'Yes' would take enough care to ensure they knew which speaker was left or right. If you were not sure simply replacing both speakers on the base station would then re-assign the speakers to the respective stereo channel. This takes only a few seconds - unless, of course, the speakers have been placed at the recommended maximum 45 metres from the base station - depends then whether you run or walk.

I am averse to making unnecessary markings on equipment and I think to do so makes the items aesthetically less pleasing. However, to each as they choose.

Anyone who finds alll that too confusing there is a switch on the base station to set to mono and thus both speakers receive both channels equally and a mono output is achieved.

I am not trying to champion these speakers, just giving my opinion based on experience of wireless speaker systems - these are the best I have used so far - without having to get a mortgage to pay for them.

Thanks everyone. The Griffin Evolve looks like it would be fine but I don't own an iPod. I have an iAudio which doesn't work with it. I don't mind having to plug the speakers in for power. I just didn't want to go crawling through the attic to run speaker wires to various locations. I also would rather have them hooked up to my stereo system so I could either listen to cd's, the audio from my concert dvd's, or my mp3 player.

Paul

I haven't seen any lately, but someone used to make a set of speakers and transmitter that worked thru your house wiring. Plug the transmitter into an outlet and the speakers into an outlet where ever you want it. I've seen several photographers use it for doing photo montages at receptions. The guy had 4 speakers plugged in around the reception hall. It worked fine without blasting everyone out.

Lynn

There is another invention out there that broadcasts the music on a 100khz sonic carrier to every point in the room. Somehow your ear decodes it and you hear the music.The dude that invented it wants the motherlode for it's use however.
JJK

I do not wish to perpetuate this post, particularly as the originator seems to have a different idea about what they mean by 'wireless' speakers.

The point you raised about knowing which speaker is left or right is quite obvious - having last night enjoyed a late summer evening listening in the garden. Each speaker has a green light at the bottom left and right of the speaker. The left light is lit if designated left and the right light if designated right. I should have said that in my earlier response but simply forgot.. So there is a visual indicator.

A small point to make is that although these are an iPod docking station any device with RCA phono outputs or headphone/earphone connectors can be connected to this system.

I am more than pleased with the system and until something better, and affordable comes along, then these suit my needs of being completely wireless at the speakers.