Don't worry about the titanium tweeter. The sound is natural and flat.
Meng Qi, Amazon
29 December 2013
Summary: I bought these L890 speakers to replace Yamaha NS-777 as front speakers in my home theater. While the NS-777 are excellent speakers, their highs are a bit too bright and there is a slight "ringing" sound. This is a common problem among aluminum and other metal tweeters. So I was apprehensive when buying the L890. They have titanium tweeters and I was worried that they might have bright highs. Got these speakers 3 days ago.
Summary: I was going to spend $1500 to $3000 on a set of new speakers (have had a pair of Boston Acoustic A400s for about 30 years)but when I saw these were about half price on Amazon and I love the JBL system that came with my car I decided to spend a lot less and am not disappointed.A few observations....because these speakers have a tweeter and super tweeter, I expected them to be very bright and I like Bright speakers.
Summary: I use a pair of these for more than three years. A center speaker was replaced with a comparable L from JBL a few month later. Each L890 is powered in my setup by two channels (bi-wire) of a good Pioneer Elite receiver, and can produce very loud and usually clear sound. While bi-wire is slightly excessive (the speaker does not need 2 x 130W), it is a reasonable use of "excessive" channels from amplifiers and may somewhat reduce distortion.
Summary: For the price I paid, there is little I can complain about. These speaker need better than average components to realize their full potential. After over 40 hrs of listening using first, my Denon AV-3802 receiver, then using Emotiva XPA-3 Amplifier, with the Denon receiver as Pre Amp on two chanel only, I can make the following staments that applies to my particular listening setting: At first the highs are a little bright, but as the speakers get pass about 15 to 20...
Summary: Very well ballanced sounding, superb design, really capable to reach incredible sound pressure levels without any noticeable trace of effort.
Pros: no joke building materials, no joke building concept; pleasant either to listen to or just to look at them in my listening room - there's nothing to annoy me; all complaints are minor and don't worth mentioning.
Cons: loose manufacturing quality control - the holes for attaching the front grill are drilled 5 mm lower than necessary at the one speaker, the other one is OK, so inspect every piece of JBL speakers at your hifi shop before laying down the cash; L890 need really high power feeding to disclose their full bass potential.
Excerpt: Es un altavoz de suelo dual, con una cúpula fabricado en aluminio, un Mylar® de 3/4 pulgadas. Los JBL L890 pesan casi 30kg cada uno!, una burrada, pero son unos pepinos en el sonido, miden cerca de un metro de largo, son un poco gruesos para mi gusto, y por supuesto son para habitaciones grandes y con sitio.
Pros: El sonido sobre todo la alta frecuencia, gran capacidad de volver locos a los vecinos