Phantom Reactors are NOW AVAILABLE!

[Marcello]

Actually, I don't think that the left/right channel matters. I think it is because your voltage for your specific RCA output is too low.  I wonder if you can increase that output or find another DAC that outputs more voltage.  Just a suggestion.

Will that involve an amplifier?

Thanks for the suggestions. My usage to the Reactors is as front speakers in a HT system, I had a 5.1 and bought the 2 reactors to make it a 7.1 out of it.
For reference, my 5.1 system was a Beolab 14 (unfortunatelly no longer in production, but really good IMHO) connected to the preamp outs of a Marantz receiver.
My idea was the Reactors rated at 900W would be a good addition to make it a 7.1, the Beolab 14 is rated at 140W per channel and I thought the reactor would over power my other speakers. Not really, actually it's the opposite.

There goes the saga...so I got the reactors connected to each preamp out on the receiver using a mono cable (RCA to 3.5mm) and it sounded weak and had a lack of definition some hisss. Then I got the adapter I mentioned on my previous post which gets the mono cable and output a "left and right" 3.5mm connection with same mono input. That considerably improved the sound quality, now each channel sound detailed and right, that means the Reactor Aux In was really expecting 2 input channels... however it doesn't sound much stronger than before, just the quality is now good.

Then I tried to connect other devices using stereo cable to the analog aux in on 1 reactor just to check if the weakness issue was being caused by the receiver preamp out. No matter what I connected (iPhone, a DAC with preamp, computer) as much as it sounded really good, it still sounded much lower than what you would expect of 900W.

Then I tried using the wireless connections of the Reactor, bluetooth and AirPlay, and it sounds enormous, unreasonable, as the maker says.
My conclusion is the 98db comes out of a "magical" digital amplification inside the speaker, when you input analog it's not able to use the same "magic" and then it sounds a lot lower. Really, considerably lower, much less then the Beolab at 140W that is right beside them.

Finally I could get the Reactors to work properly with the Beolabs after fine tunning the receiver, leaving the output gain on the Beolabs at -3.0db and raising the Reactors at +8.0db. Just for the record, both Reactors are constantly set at volume 70 (as opposed to the Beolabs that are constantly at 100 becuase they are powered speaker without a volume knob), of course if I let them constantly at 100 they would be louder, but that adds a hisss, so volume at 70 and receiver with the output gain at +8.0db achieved a good balance in my setup. I didn't perceive any added noise or distortion using this configuration and it sounds good on my room.

My short review is: The Reactor sound really good, but their full potential is tied to digital inputs, when using analog they still sound good (actually even better in my perception) but then you don't have anything even close to 900W.

Compared to the Beolab 14 sound, the Reactors shine on both extremes, the high and lows are more detailed, you listen to things you didn't know were there before, but they lack the mids, which are much stronger and warmer on the Beolab 14. The Reactors have a lot of detail but they sound harsh at times while the Beolab is balanced in the middle (as much as it can be for a system composed of a big woofer and satellites, but I credit the sound quality to B&O fine tuning). At the end I'm quite pleased with the combination of both sound systems, the 2 reactors on the front brought more detail and sharper ends to the frequency spectrum while the Beolabs beautifully fills in the middle. I know purists would say combining speaker brands and sound signatures is not a good idea, but when they complement each other I think the final result can be quite pleasing.

Overall the sound quality is really good considering the size of the Reactors and that they cover 20-20k Hz in a single small package, while the Beolab does it with a big woofer and satellites all over the place and a very clever crossover management. However a full home theater composed only by Reactors would sound a bit too crispy and not so warm in my opinion.

It is a nice speaker, a bit expensive, but with lots of potential specially if/when it gets stereo wireless, AirPlay 2. I'm pleased with the overall quality.
Also it's quite flexible, I can use them on my HT and then carry them somewhere if I need, play wireless, etc.
But the 900W should have an * , it's really loud only when the input is digital (maybe that's the reason why the big Phantoms never accepted direct analog input).

Anyway I'm still testing it since I just had it for a few days. Pleased to help in case anyone has any questions.