JBL 705i/708i (7 Series Master Reference Monitors) & 725G/728G (subwoofers): Jan 2015 - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 1916 Old 10-17-2014, 04:23 AM - Thread Starter
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JBL 705i/708i (7 Series Master Reference Monitors): Jan 2015

Quote:
Originally Posted by Adam Savage
For the eight-inch two-way 708i and five-inch two-way 705i installed monitors, JBL developed a new miniature high-frequency transducer, the 2409H, featuring the manufacturer’s low-mass, annular diaphragm design, which was built to allow very high output with low distortion and high frequency response to 35kHz. JBL also engineered two new high-excursion five-inch and eight-inch woofers, the 725G and 728G, enabling the speakers to deliver robust low-frequency output into the 30Hz range...

To reduce enclosure size and installation cost, the speakers are centrally powered by Crown DCi 8|300N eight- and four-channel power amplifiers. The 705i and 708i can be driven by a single amp channel or bi-amplified. For greater accuracy and room-to-room consistency, BSS Soundweb London's signal processor provides speaker tuning, room EQ, and bass management. The processor accepts 16 or more analogue and AES/EBU inputs, and networks with the power amps via CAT5. The entire system can be externally controlled with HiQnet Audio Architect software, a hardware controller, or wireless tablet.
http://www.audioprointernational.com...monitors/07573

Data Sheet:

http://www.jblpro.com/ProductAttachm...eet_101514.pdf

5":

Quote:
Frequency Response -1.5 dB @ 48 – 23kHz
Frequency Range 39Hz – 36 kHz
Max SPL (80 Hz - 20 kHz) >101 dB SPL / 1m
Maximum Peak SPL (80 Hz - 20 kHz) >107 dB SPL / 1m
http://www.jblpro.com/www/products/r.../lsr705i#Specs

8":

Quote:
Frequency Response -1.5 dB @ 45 – 23kHz
Frequency Range 35Hz – 36 kHz
Max SPL (80 Hz - 20 kHz) >108 dB SPL / 1m
Maximum Peak SPL (80 Hz - 20 kHz) >114 dB SPL / 1m

I, dabotsonline / Nicholas Polydor, am part of Panasonic UK's 'VIERA VIP Club': a group of six bloggers and forum posters receiving special access to information and events for the TV product range. Costs for activities are covered by Panasonic (no cash is involved). However, I can assure that this will never compromise my integrity or objectivity as an ethical conscience is something I have always and will forever hold very dear to my heart.

Last edited by dabotsonline; 10-20-2014 at 01:53 AM. Reason: Accidentally deleted most of what I had already written!
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post #2 of 1916 Old 10-18-2014, 01:34 PM
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I was excited for a quick moment until I found out that the 7 series would be passive and not active monitors.. Come on JBL, create a LSR 708p (p for powered)
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post #3 of 1916 Old 10-18-2014, 01:45 PM
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Aha. I think I will have to wait for these. It appears they are the first models designed to be a timbre match for the M2's. I was wondering when they would get these out the door - and here they are. I wonder what the waveguide dispersion is?

I just ordered some SCS8's, but I think I might return them.
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post #4 of 1916 Old 10-18-2014, 04:13 PM
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A couple very short videos:

https://www.facebook.com/video.php?v...type=2&theater

https://www.facebook.com/video.php?v...type=2&theater

I can't wait to learn more about these.
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post #5 of 1916 Old 10-18-2014, 04:19 PM
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Note that the 725G/728G refer to the low frequency drivers in the 705i and 708i respectively. They are not subs are mentioned in the thread title.
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post #6 of 1916 Old 10-18-2014, 05:19 PM
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I'm curious what the list price will be compared to the 305 and 308.
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post #7 of 1916 Old 10-18-2014, 07:41 PM
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Nice. Will be watching these.
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post #8 of 1916 Old 10-19-2014, 12:33 AM - Thread Starter
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Quote:
Originally Posted by Zzzzz... View Post
Note that the 725G/728G refer to the low frequency drivers in the 705i and 708i respectively. They are not subs are mentioned in the thread title.
Ah, poor reading comprehension on my part! Thanks for pointing this out, @Zzzzz... . Could @markrubin or one of the other moderators edit my thread title, please? Cheers.

I, dabotsonline / Nicholas Polydor, am part of Panasonic UK's 'VIERA VIP Club': a group of six bloggers and forum posters receiving special access to information and events for the TV product range. Costs for activities are covered by Panasonic (no cash is involved). However, I can assure that this will never compromise my integrity or objectivity as an ethical conscience is something I have always and will forever hold very dear to my heart.
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post #9 of 1916 Old 10-20-2014, 01:55 AM - Thread Starter
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Quote:
Originally Posted by Adam Savage
To reduce enclosure size and installation cost, the speakers are centrally powered by Crown DCi 8|300N eight- and four-channel power amplifiers. The 705i and 708i can be driven by a single amp channel or bi-amplified.
For those interested, @imagic posted an article on said amplifiers here: New from Crown: 'DCi' DriveCore Install Series amplifiers

EDIT: Formatted my message correctly, now!

I, dabotsonline / Nicholas Polydor, am part of Panasonic UK's 'VIERA VIP Club': a group of six bloggers and forum posters receiving special access to information and events for the TV product range. Costs for activities are covered by Panasonic (no cash is involved). However, I can assure that this will never compromise my integrity or objectivity as an ethical conscience is something I have always and will forever hold very dear to my heart.
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post #10 of 1916 Old 12-26-2014, 01:55 PM
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Looks like these can now be purchased:

www.performanceaudio.com/shop/JBL/LSR-7-Series-826/

It's interesting that they can be purchased individually rather than as a system.

Perhaps the most interesting new info, hearsay at this stage, is that they measure even better than the M2's Not sure how that is possible Probably the differences are minor but it looks like these could indeed be a very nice option if you don't need the SPL produced by the M2's.

www.audioheritage.org/vbulletin/showthread.php?36228-New-LSR-7-series-708&p=369867&viewfull=1#post369867
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post #11 of 1916 Old 12-28-2014, 05:56 PM
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Very interesting. I thought these would only be available as part of a package with the crown amps. Looks like you can buy them individually?
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post #12 of 1916 Old 02-06-2015, 02:12 AM
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A little titbit, Scott Wilkinson recently got to hear an Atmos setup consisting of 7 series speakers (see the 4th photo and accompanying info):

Nile Rodgers Honored at Pre-Grammy Party


3 series monitors were also being used in another demo.
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post #13 of 1916 Old 02-06-2015, 03:02 AM
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Quote:
Originally Posted by Zzzzz... View Post
A little titbit, Scott Wilkinson recently got to hear an Atmos setup consisting of 7 series speakers (see the 4th photo and accompanying info):

Nile Rodgers Honored at Pre-Grammy Party


3 series monitors were also being used in another demo.
Quote:
In Studio D, the Dolby Atmos system used JBL's new 2-way 7-series speakers in a 7.1.4 configuration, with pairs of left and right side surrounds playing the same signal.
That statement sounds like 5.1.4 with array of surrounds instead of 7.1.4
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post #14 of 1916 Old 02-08-2015, 05:47 PM
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Quote:
Originally Posted by Skylinestar View Post
That statement sounds like 5.1.4 with array of surrounds instead of 7.1.4
Yeah, it's not completely clear. For me its just nice to see that these are already out and that presumably Dolby had the good taste to choose these monitors for their demo
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post #15 of 1916 Old 02-10-2015, 11:34 AM
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I assume these have "normal" passive crossovers and can be used with usual AV Receivers...

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post #16 of 1916 Old 02-10-2015, 12:38 PM
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Quote:
Originally Posted by Hifisound View Post
I assume these have "normal" passive crossovers and can be used with usual AV Receivers...
Yes.

"The 705i and 708i can be driven by a single amp channel or bi-amplified. For greater accuracy and room-to-room consistency, HARMAN’s BSS Soundweb London signal processor provides speaker tuning, room EQ, and bass management."

The above however suggests that to get the most out of them, the Harmon processor would be required to tweak their anechoic response (like with the M2s). I don't know if that is the case or not. It depends on what exactly they mean by "speaker tuning." So far the info provided by JBL has been pretty limited.
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post #17 of 1916 Old 02-11-2015, 01:53 AM
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What, No built-in amp? Time to bring out the Lepai!
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post #18 of 1916 Old 02-11-2015, 10:55 AM
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I guess no measurements out yet....

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post #19 of 1916 Old 02-11-2015, 12:44 PM
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Quote:
Originally Posted by Hifisound View Post
I guess no measurements out yet....
No official measurements are available as yet but the rumor is that they measure extremely well:

http://www.audioheritage.org/vbullet...l=1#post369867
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post #20 of 1916 Old 02-12-2015, 10:42 AM
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Though no 3rd party measurements were seen for the earlier 63xx series....

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post #21 of 1916 Old 02-14-2015, 05:52 PM
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Quote:
Originally Posted by Hifisound View Post
Though no 3rd party measurements were seen for the earlier 63xx series....
Not really sure what you are getting at. Even if no third party measurements end up being published for these new monitors, there should be plenty of people giving their thoughts on them once they become available. If they sound anywhere as good as they apparently measure, then I would imagine they will be quite popular.
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post #22 of 1916 Old 02-14-2015, 08:27 PM
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Just an observation . No offense intended


Last edited by Hifisound; 02-14-2015 at 08:42 PM.
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post #23 of 1916 Old 02-14-2015, 10:39 PM
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^^^ None taken Prior to the 7 series, the LSR6328Ps were one of the few speakers I'd seriously been interested in. Part of the lack of third party measurements could be down to the fact
1. they first came out quite a while ago - perhaps back then measuring gear was not as readily available / cheap as it is today
2. perhaps its not that unusual for a speaker not to have third party measurements made - to do a really worthwhile job of it you would need access to an anechoic chamber, which would be quite costly, and it would also be pretty time consuming
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post #24 of 1916 Old 02-18-2015, 02:30 AM
 
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What will the price be for the 708i?
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post #25 of 1916 Old 02-18-2015, 06:14 AM
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Any more news on these chaps? Im in the uk and info is scarce to say the least, i reckon these could be perfect for home theatre (dedicated room)
Price and availability would be nice to know...
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post #26 of 1916 Old 02-24-2015, 12:12 PM
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With the little 3 series priced at $250 and being powered, I am hoping these come in under 4 digits, but I have no clue at this point...

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post #27 of 1916 Old 02-24-2015, 12:41 PM
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Quote:
Originally Posted by beastaudio View Post
With the little 3 series priced at $250 and being powered, I am hoping these come in under 4 digits, but I have no clue at this point...
Prices were listed here but have since been removed:

www.performanceaudio.com/shop/JBL/LSR-7-Series-826/

705i $549 (reduced from $687.50)
708i $1249 (reduced from $1500)
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post #28 of 1916 Old 02-24-2015, 12:54 PM
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Hmm, I guess that is about right. I'd be curious still how the 708i stacks up against the 6332

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post #29 of 1916 Old 02-24-2015, 06:09 PM
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Quote:
Originally Posted by beastaudio View Post
Hmm, I guess that is about right. I'd be curious still how the 708i stacks up against the 6332
Yeah I'm also really keen to learn how these stack up to the older 6328 and 6332, as well the M2. It's sort of strange but the 6332s don't get mentioned here that often. I would of thought that they would be more popular.
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post #30 of 1916 Old 02-25-2015, 06:48 AM
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Quote:
Originally Posted by Zzzzz... View Post
Yeah I'm also really keen to learn how these stack up to the older 6328 and 6332, as well the M2. It's sort of strange but the 6332s don't get mentioned here that often. I would of thought that they would be more popular.
After reading through the papers and spec sheets on it, I am pretty surprised myself as well....

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