Any JBL 1400 Synthesis Array owners


I have a pair and am interested in what amps you have tried and the results. I am currently using a 70 wpc tube amp to great effect. I will also try the Quicksilver 90wpc Silver Mono and MFA M 200 in 100 wpc triode mode. The Bryston 14BSST is great but too heavy for me so I reluctantly sold it. Perhaps trying a 3 BSST in the future for a SS alternative.
Using an Aesthetix Calypso preamp.
PT
plasmatech
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Hi,
I have a pair that I have been using for a couple of years now.
Currently I use a Pass Labs X350.8.
Prior was a Pass Labs X350.5.
This is a lot of power for a 89dB speaker, and sounds great!
Full scale. As loud as I want.
These speakers can take the power without stressing out.
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I am quite taken by the lack of color, and effortless dynamics. I compared them with the WP6, and found the JBL better in many ways. They are real sleepers. I will have to try out some Pass gear. I have always have liked his gear. PT
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Yes, the dynamics are really fantastic.
I can't believe that there is not more interest in this speaker. I have not heard anything I like better yet, and I have been at this for awhile. The compression drivers, once heard, are impossible to deny.
I am interested in your experience with the tube amps and the 1400s. What is the minimum power you have gotten by with? What do you find lacking and what do you find engaging?
As for the Pass gear, audition it. I think you will find this to be a great match.
There is plenty of nuance and plenty of realistic dynamics. I like the power.
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I am using a 70 wpc tube amp which seems to be coasting. I have tried EH kt88 and Gold Lions, more detail with EH, more body and warmth with GL. I like both. Next week is the 90wpc V-Caped Quickies. After that, 100 wpc MFA TRIODES. Bass with the tube amp is very deep, controlled, and dynamic. Damping factor is 11-12, same as the Quickies. Silver cable is used. I may upgrade the gold binding posts and use biwired cable or try 4 Quickies at 180 wpc of tube power. So many options. I may go with Silver Rhodium posts or Eichmann posts. PT
With a 70w tube amp I doubt you are hearing the full extent of bass extension and power that these very good loudspeakers are capable of.
One of the members of our audio club (Las Vegas Audio Club) has a pair of these, they sound great! The amps: 1000 W Crown industrial amps. I heard this system cranked. You'll be picking your jaw up off of the floor.

I have the JBL S4700s, which are, for the most part, equivalent in sound to the 1400 Arrays, and there might be something to using high powered solid state amps with these very efficient speakers. I'm looking at the Accuphase A-70, which is a Class-A lower powered amp, but can drive very low impedances. It drove a pair of very insensitive Magico speakers @ CES 2015 with no problem at all. But that Pass Labs X350.5 and .8 has gotta be one of the best, if not the best high powered stereo A/B amps out there...I would get that over the Bryston, but the Bryston is a good choice too, and it's a bit cheaper as well...
If you wanna go Bryston, then get the 4B SST2. That's what I use (actually the older SST model) at the present time with my JBLs. I haven't got it to clip yet. Another idea is to bi amp with tubes on the mids/highs, and solid state on the bass. But that needs to be carefully done. It's a bit tricky.
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Oh, yes.
I also used an Audio Research Ref 110.
It's been awhile now but I seem to remember liking the combination well enough.
I would like to hear the JBls with the new Ref 150.
I just finished listening to Bartok For Children, Jeno Jando, Piano (NAXOS).
Really, the X350.8 and the JBLs are not missing much!
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I am using Marantz reference gear: MA9S2 monoblocks with matching pre and cdp. I love the combo.
Dave 72, I bet the JBL speakers sounded better than the magico speakers hands down!
I just tried the Quicksilver Silver mono, similar to the new Silver 88, and the match is very synergestic. Great bottom end control and extension. Eventually I will try all 4 of them. Just very well matched. PT
Dave 72, I bet the JBL speakers sounded better than the magico speakers hands down!

Probably, but the magazines don't want you to know that, or they just don't know. lol.
Dave 72, seem's JBL introduced synthesis LS-80 speaker's, along with the other synthesis LS model line, have you had the chance to listen to these speaker's?
Those have been around for a while now actually. no, I haven't heard them yet.
Dave_72, How long have they been around, unless I missed something, I just noticed this new line of JBL speakers, The last time I was on the JBL sysnthesis web-site, I admitt, it must been a while, a few months to a year, but that's it, unless JBL did not put these on their web-site until long after they where on the market?, the LS-80 speaker looks appealing, I wonder what the retail is, and the specs?
At least 3 years. I'm not sure, I believe so. Retail is around $4 or $5k. Maybe even $6k. The specs are in the reviews, just look them up via Google.
Dave72, I was correct then, The JBL LS-80 was on the market way before they put them on the sysnthsis web-site.
Yes you were. As well as the new to North America 4365 which have been available in Europe and the Far East for quite some time now...:D
Dave 72, the 4365, mmm, never heard of this one either, man, I enjoy talking to you, you are the one to come to about alot of JBL speakers, I suppose I can search this model out and see what the fuss may be about this model, have you any exsperience with the 4365?
Well, again, they're very new to North America, and for some reason haven't been publicized yet except on dealer websites.

http://www.homeaudiosound.com/?portfolio=jbl-4365-studio-monitor

No experience with them other than reading about them. One of the club (Las Vegas Audio Club) members just got a pair, so eventually I'll be up at his place to listen to them!

Take care!
Thanks Dave 72, please let me know your impression's of the JBL 4365.
You're welcome, and I will. It might be a little while, though.
Hi,
I thought I would add something new.
I have been using a First Watt F5 on these speakers. The sound is very clear and real. I like it a lot.
When I want dynamics, though, it's back to the 350.8!
Cool, sounds good. That sounds like a good match-up ie the 350.8.
Has anyone used the SDEC as an active crossover for this speaker?