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[Douglas R. Allen]

   Not sure how long these have been out. They are showing as a new line on Facebook but I thought these were out for awhile?

 https://jblpro.com/product_families/srx900-series

   Douglas R. Allen

[Brian Bolly]

Announced today.  Will be interesting to see where these stack up with the other plastic line source boxes, and/or if this is the demise of the VRX. (I would not shed a tear)

[Matt Vivlamore]

After glancing at the spec/details, I am not at all thrilled.  Usually JBL over inflates their numbers.

The SRX928SP has 500+ watts and 1db less of output than the SRX828SP.

[Tim McCulloch]

With all the hand-wringing over the subs, consider the difference between the VerTec 4880 and 4880A.  On paper the biggest difference is weight, almost 100 lbs more for the A version, a few Hz, and a dB or 2.  In performance the differences were visceral.  You FELT it differently (and more of it). 

I suggest this will be similar.

[Jim McKeveny]

Cabinet material and price. ABS tends to be more forgiving than PPE/PE, across impacts and temp extremes. ABS polishes & repairs better than other plastics. Maybe just me, but I'd love to see some internal damping spray or applique.

Class D or not, I'm never as confident with amps in sky & sun vs. under stage. Under hot sun what could be the internal temps if the whole rig being run hard? Neo mags aren't fans of high temp. Show all work JBL.

Pricing? JBL positions themselves with D&B and L'Acoustics, without the general acceptance and service support. This is the big TBD...

[Steve Ferreira]

Cabinet material and price. ABS tends to be more forgiving than PPE/PE, across impacts and temp extremes. ABS polishes & repairs better than other plastics. Maybe just me, but I'd love to see some internal damping spray or applique.

Class D or not, I'm never as confident with amps in sky & sun vs. under stage. Under hot sun what could be the internal temps if the whole rig being run hard? Neo mags aren't fans of high temp. Show all work JBL.

Pricing? JBL positions themselves with D&B and L'Acoustics, without the general acceptance and service support. This is the big TBD...

Sweetwater has some pricing on their website:
SRX 906 $2199
SRX 918s $2299
SRX 928s $4099

Also a post in here.
https://forums.prosoundweb.com/index.php/topic,177151.0.html

[Brian Jojade]

With all the hand-wringing over the subs, consider the difference between the VerTec 4880 and 4880A.  On paper the biggest difference is weight, almost 100 lbs more for the A version, a few Hz, and a dB or 2.  In performance the differences were visceral.  You FELT it differently (and more of it). 

I suggest this will be similar.

Yup, reading spec sheets is often a giant waste of time.  2 cabinets may show to be nearly identical on paper, but in the real world, the performance is hardly the same. 

[Lee Buckalew]

After glancing at the spec/details, I am not at all thrilled.  Usually JBL over inflates their numbers.

The SRX928SP has 500+ watts and 1db less of output than the SRX828SP.

Spec sheets also show a 12dB crest factor being utilized for peak calculation rather than 6dB. 

Lee

[Keith Erickson]

Spec sheets also show a 12dB crest factor being utilized for peak calculation rather than 6dB. 

Lee

SRX900 Max SPL numbers are not calculated, they are measured using 12db crest pink noise and using the array preset for the Line Array boxes and the 80Hz preset for the subwoofers.  Full-space for the array boxes and half space for the sub.

The SRX800 SPL numbers were calculated and the SRX828SP SPL number was calculated based on the Half-space sensitivity and peak power handling of the passive SRX828S. Given the peak power available in the SRX828SP of 2000w (33dB Gain) it has a theoretical Max SPL of 137dB while the SRX928S sub has a measured max SPL of 140dB.

Also the amp power is measured differently in the SRX900 as compared to the SRX800.  The SRX800 stuff is 2000w Peak.  For example the SRX828SP amp is 2x 750w cont. / 2x1000w peak.

The SRX928s amp is 1100w for greater than 1000ms and a burst power of 2500w for 20ms.  This burst rating is not the absolute peak output of the amp but rather a shorter duration power number.  This is the same type of spec that many 'elite" level power amp brands publish as the continuous power output of their amps.  The true peak power of the amp in the SRX928s is more than 2500w.

Lastly..if you compare the actual frequency response curves of the 928S and 828SP, you will see they are basically the same and the 828SP doesn't really go lower if you are looking at the curves and the same preset info.  The port on the SRX928s sub is a much better design and will produce more output down low when pushed hard as compared to the SRX828SP.

[Lee Buckalew]

SRX900 Max SPL numbers are not calculated, they are measured using 12db crest pink noise and using the array preset for the Line Array boxes and the 80Hz preset for the subwoofers.  Full-space for the array boxes and half space for the sub.

Thank you for the more detailed info.

My point was they are now using a 12dB crest factor rather than a 6dB crest factor that many other manufacturers use and that JBL has used on many (most?) models in the past. 
The salespeople like to point out peak capabilities and don't usually take into account such differences.


Lee

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