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Title: Any reviews of the new JBL PRX400 series?
Post by: Mike Stewart on October 09, 2012, 04:29:23 PM
Anyone heard these?  They are apparently the passive version of the PRX600 series.  Very tough to find a pair without just blindly ordering them and I can find no reviews on the interwebs.  Any insight on these would be greatly appreciated.  I like the relatively light-weight (12" is ~35 pounds) and the combo 1/4" / Speakon jacks.  Don't particularly like that the corners are all unprotected, but I guess you just have to be careful when handling this type of cabinet.

Quick background: I'm looking at the PRX412M as a nice upgrade replacement for our existing Yamaha BR12 mains.  We're playing rock covers in small-ish settings (bars, wineries, parties), typically using simple 1000W peak PA heads (eg Mackie PPM608) at about half power.  No subs.  Primarily vocal reinforcement only, but sometimes powering a full acoustic arrangement (vocals, acoustic guitars, electric bass, cajon). 

PRX412M SPEC SHEET: http://www.jblpro.com/BackOffice/ProductAttachments/JBL_PRX412M.v11.pdf

Thanks.
- Mike
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tim Perry on October 09, 2012, 08:42:30 PM
 A 90x50 pattern ?  when in monitor use its only 50 degrees wide. I hope all the users just stand there in one spot and don't move.

<edit typos>
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Mike Stewart on October 10, 2012, 12:40:15 AM
The Yamaha S112V, which I also considered, are 90 x 40, and the generally well rated (for this price point) EV SX300E is 65 x 65.  Sounds to me like 90 x 50 is in the ballpark for this group.  Am I missing something there?
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Chris Chambers on October 10, 2012, 12:44:24 AM
I've heard they use the same or at least some of the same drivers out of an older fairly crap sounding series from JBL, can't remember the series name sorry. Worth a look into though
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Mike Stewart on October 10, 2012, 02:06:46 AM
Definitely worth a look into, Chris.  Turns out, although the PRX412M is explicitly marketed as the passive version of the PRX612M, they have very different drivers.  In fact the PRX412M driver model number looks suspiciously like the one the low-end JRX series uses.
LF Drivers (as listed in the JBL spec sheets):
JRX112MI : JBL M112-8
PRX412M : JBL MB112-8 305 mm (12 in) woofer
PRX612M : JBL 262F-1 380 mm (12 in) Differential Drive® dual voicecoil and magnetic gap, neodymium woofer

Well this doesn't look good.  Not at all... :-\
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Philip Norman on October 10, 2012, 05:36:15 AM
Good thing I read this thread! Was just about to start looking at the 412m as a vocal wedge. Does anybody have experience with these units?? Nothing on the web.


Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Chris Chambers on October 10, 2012, 06:22:54 AM
Good thing I read this thread! Was just about to start looking at the 412m as a vocal wedge. Does anybody have experience with these units?? Nothing on the web.

As mentioned above, they use similar drivers the JRX series which sound pretty bad compared to others in their price range. The only thing so far I can see going for these is the aesthetics and the three letter badge.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tim McCulloch on October 10, 2012, 07:18:03 AM
As mentioned above, they use similar drivers the JRX series which sound pretty bad compared to others in their price range. The only thing so far I can see going for these is the aesthetics and the three letter badge.


Never mind.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tim McCulloch on October 10, 2012, 07:20:05 AM
Good thing I read this thread! Was just about to start looking at the 412m as a vocal wedge. Does anybody have experience with these units?? Nothing on the web.

It's brand new.  I'm not even sure they're shipping yet.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tim McCulloch on October 10, 2012, 07:21:11 AM
Definitely worth a look into, Chris.  Turns out, although the PRX412M is explicitly marketed as the passive version of the PRX612M, they have very different drivers.  In fact the PRX412M driver model number looks suspiciously like the one the low-end JRX series uses.
LF Drivers (as listed in the JBL spec sheets):
JRX112MI : JBL M112-8
PRX412M : JBL MB112-8 305 mm (12 in) woofer
PRX612M : JBL 262F-1 380 mm (12 in) Differential Drive® dual voicecoil and magnetic gap, neodymium woofer

Well this doesn't look good.  Not at all... :-\

There is more to a speaker system than the transducers.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tim Perry on October 10, 2012, 07:42:52 AM
there's a pair of EAW 129Zi currently on e bay for about $1K if you can pick them up in Florida :(
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Jamin Lynch on October 10, 2012, 08:35:03 AM
Anyone heard these?  They are apparently the passive version of the PRX600 series.  Very tough to find a pair without just blindly ordering them and I can find no reviews on the interwebs.  Any insight on these would be greatly appreciated.  I like the relatively light-weight (12" is ~35 pounds) and the combo 1/4" / Speakon jacks.  Don't particularly like that the corners are all unprotected, but I guess you just have to be careful when handling this type of cabinet.

Quick background: I'm looking at the PRX412M as a nice upgrade replacement for our existing Yamaha BR12 mains.  We're playing rock covers in small-ish settings (bars, wineries, parties), typically using simple 1000W peak PA heads (eg Mackie PPM608) at about half power.  No subs.  Primarily vocal reinforcement only, but sometimes powering a full acoustic arrangement (vocals, acoustic guitars, electric bass, cajon). 

PRX412M SPEC SHEET: http://www.jblpro.com/BackOffice/ProductAttachments/JBL_PRX412M.v11.pdf

Thanks.
- Mike

I got some of these in at the store a couple of months ago. They use the Selenium series components. Different from the JRX or PRX600. They sound much better than JRX. Not as good as MRX, SRX or STX though.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tom Burgess on October 10, 2012, 02:42:07 PM
I've used and sold a few of these already.  I think they compare pretty favorably to their now-defunct MRX counterparts, definitely better than JRX (by a long shot) but obviously not to the level of SRX.  I just put a single PRX418S powered by an XTI4002 (in case they add a 2nd sub) into a dance studio that occasionally does some parties in their main room and wanted the ability to thump.  I've also used the 12's as monitors and 15's as full range mains in a small church with XLS amps and a Driverack PA+... I am very pleased with the results, as is the client.  So far so good for the PRX4XX series as far as Im concerned.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Chuck Simon on October 10, 2012, 02:47:17 PM
Selenium speakers?  So JBL is outsourcing it's drivers for this line.  This is a first for JBL isn't it?
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tom Burgess on October 10, 2012, 02:59:15 PM
Selenium speakers?  So JBL is outsourcing it's drivers for this line.  This is a first for JBL isn't it?
Nope... Harman owns Selenium.
Title: Any reviews of the new JBL PRX400 series?
Post by: Samuel Rees on October 10, 2012, 03:39:00 PM
Not as good as MRX, SRX or STX though.

Not as good as MRX? I thought it was the MRX replacement, I feel like its bound to be at least in the sand class...
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Chuck Simon on October 10, 2012, 05:02:39 PM
Not as good as MRX? I thought it was the MRX replacement, I feel like its bound to be at least in the sand class...

Well, is the STX line "as good" as the SRX line it replaces?
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tim McCulloch on October 10, 2012, 05:07:38 PM
Well, is the STX line "as good" as the SRX line it replaces?

The word from JBL is "yes."  My local dealer heard them recently and said they sounded different than the SRX, but they were good, and claimed the only real downside was the additional weight.  I hope he stocks a few demo pieces so I can audition them.

YMMV.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Chuck Simon on October 10, 2012, 05:26:55 PM
The word from JBL is "yes."  My local dealer heard them recently and said they sounded different than the SRX, but they were good, and claimed the only real downside was the additional weight.  I hope he stocks a few demo pieces so I can audition them.

YMMV.

As a long time "fan" of JBL I hope that is true.  I just find it curious how the same 2206 and 2226 drivers have gone from 600 watts in the 4700 series to 800 watt drivers in the STX series!
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Jamin Lynch on October 10, 2012, 06:09:25 PM
Well, is the STX line "as good" as the SRX line it replaces?

The PRX400 series is not a direct replacement for the MRX. It's more like between the JRX and MRX.

I think the STX sounds a little better than the SRX. The subs seem to have more "chest thump" and the tops seem to have a more rich and fuller sound for vocals. But I've only heard the single 18" sub and 15"/horn top speaker all power by ITechs.

All the cabinets are well built.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Chuck Simon on October 10, 2012, 10:04:24 PM
So JBL puts 20 year old speakers in their new line and they sound better than the SRX series, which share some of the same drivers as the VRX and Vertec line.  And on top of that, those new, well built cabinets have increased the power rating of those old drivers by 33%!   Moving manufacturing to Mexico has worked miracles for JBL. ;)
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tim McCulloch on October 10, 2012, 11:26:06 PM
So JBL puts 20 year old speakers in their new line and they sound better than the SRX series, which share some of the same drivers as the VRX and Vertec line.  And on top of that, those new, well built cabinets have increased the power rating of those old drivers by 33%!   Moving manufacturing to Mexico has worked miracles for JBL. ;)

It probably has more to do with the passive crossover design than anything else.  The transducers are mostly mature technology that has been proven to thousands of world-wide users.  We still use some of them in our proprietary speaker systems, and I'd hazard a guess that companies like Clair still do, too.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Mike Stewart on October 11, 2012, 12:13:52 AM
Ok, so back to me (and the PRX400's)...  ;)

I've spoken with a local JBL rep and it seems that despite the fact that the PRX400 series has the same prefix as the PRX600, and despite the fact that the JBL rep at NAMM referred to the PRX400 as "the passive version of" and "the passive brother to" the PRX600 series, apparently the two series share exactly none of the same components.  Not brothers at all.  Not even distant cousins. 

That said, the general consensus (coming exclusively from people selling or marketing these speakers) is that the PRX412M sounds notably better than the JRX112MI.  For an extra $300 / pair (+40%), I would hope so, but I'm not convinced.  I just don't want to pay the extra money and end up with a JRX level speaker in a new fancied up cabinet that clearly isn't even as road-worthy.  I'm going to try to find some PRX412's so I can actually hear them first-hand but I rather suspect in the end I may just end up redirecting my $1000 speaker budget to the Yamaha Club S112V's and spending the difference on one of those cool fog machines. ;D
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Chuck Simon on October 11, 2012, 01:58:55 AM
Despite the statement that Harmon owns Selenium, this is the first time that I am aware of that JBL has used drivers that don't have the JBL label.  I don't know, they might sound great, but I would consider used SRX or even 4700 series speakers if I were in the market for  speakers in that price range.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Mike Stewart on October 12, 2012, 12:39:37 AM
Just got this back from an exceptionally helpful JBL distributor who contacted JBL's "chief engineer / designer" who provided this clarification on the PRX400 series.  This is likely the best component information available on this series anywhere on the internet.  It's clear from this description that part (maybe even most) of the upcharge from JRX to PRX400 is based on the cabinet itself, although there are component differences to consider as well.

"The 15” woofer in the PR415M and PRX425 is the same model as is used in the JRX115 and JRX125, as stated on the individual model specification sheets.  The PRX418S uses a JBL Selenium 18” woofer, and the PRX412M uses a new 12” woofer, both of which are different from their JRX counterparts.
 
Compared to the JRX100 Series, the PRX400 Series uses a higher performance compression driver, plywood instead of MDF enclosure construction, a more professional grille, handle and overall enclosure design and appearance, DuraFlexTM finish instead of carpet, and includes ten M10 suspension points.  All of these elements combine to make the PRX400 Series a more professional and premium product than the entry-level JRX100 Series.
"
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Travis_Valois on October 12, 2012, 10:58:10 PM
As a long time "fan" of JBL I hope that is true.  I just find it curious how the same 2206 and 2226 drivers have gone from 600 watts in the 4700 series to 800 watt drivers in the STX series!
The 800 watt rating is based on 2 hours of pink noise test duration, not a 100 hour duration as was done previously to give the 600 watt rating.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Travis_Valois on October 12, 2012, 11:03:52 PM
he subs seem to have more "chest thump" and the tops seem to have a more rich and fuller sound for vocals. But I've only heard the single 18" sub and 15"/horn top speaker all power by ITechs.

All the cabinets are well built.
The subs should sound better, as they use 2242 transducers instead of the 2241. The 2242 is superior to the 2241 in both sound, performance, and power handling.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Chuck Simon on October 13, 2012, 12:05:22 AM
The subs should sound better, as they use 2242 transducers instead of the 2241. The 2242 is superior to the 2241 in both sound, performance, and power handling.

What subs are you talking about?  The PRX418 uses a Selenium driver.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Travis_Valois on October 13, 2012, 08:51:08 AM
What subs are you talking about?  The PRX418 uses a Selenium driver.
The PRX400 series is not a direct replacement for the MRX. It's more like between the JRX and MRX.

I think the STX sounds a little better than the SRX. The subs seem to have more "chest thump" and the tops seem to have a more rich and fuller sound for vocals. But I've only heard the single 18" sub and 15"/horn top speaker all power by ITechs.

All the cabinets are well built.
Chuck, I was referring to Jamin's comment on the STX subs sounding better than the subs from the SRX series. I know the PRX400 series uses Selenium components.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Bill Hornibrook on October 13, 2012, 01:10:41 PM
Compared to the JRX100 Series, the PRX400 Series uses a higher performance compression driver
This could potentially make a big difference in the performance of this new line. The JRX compression driver is frankly horrible.
Quote
The PRX418S uses a JBL Selenium 18” woofer, and the PRX412M uses a new 12” woofer, both of which are different from their JRX counterparts.
Then the only driver the PRX400 series has in common with the JRX line is the 15. Hopefully the 18" sub will sound better than it's JRX counterpart too.

It would appear that the two series really don't have all that much in common. I hope not anyway.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tom Burgess on October 13, 2012, 02:12:19 PM
...Hopefully the 18" sub will sound better than it's JRX counterpart too...
The PRX418S is in an entirely different zipcode from its JRX counterpart.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Chuck Simon on October 13, 2012, 09:51:30 PM
Chuck, I was referring to Jamin's comment on the STX subs sounding better than the subs from the SRX series. I know the PRX400 series uses Selenium components.

Thanks, I misunderstood.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Gary Creely on October 13, 2012, 10:33:09 PM
I used these (PRX412) for a portable system in a urban gospel church's large fellowship hall. I was really asking a lot of them, and they preformed rather well. I would say they are similar to MRX, maybe even a shade smoother. They are well worth $300 dollars more than JRX, and are simply a different class of speaker. They are exactly what they are priced as, a middle of the road MI speaker.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Mike Stewart on October 15, 2012, 04:55:53 PM
Here's another quick thought that typically gets glossed over in these on-line discussions, the perceived performance of a speaker depends greatly on the application.  DJ's almost certainly want something slightly different in a speaker than a gospel choir who wants something different than a rock band who wants something different than a jazz quartet and while some people are using the speakers outside on tripods, others have mounted them in basement bars, and in some cases (especially with 12's) people are engaging the help of other speakers including subs.  So the discussion has a lot of interdependent variables. 

Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Mike Stewart on February 05, 2013, 12:06:31 AM
Well in case anyone is still following this thread, here's a quick update.  I got a pair of PRX412Ms.  The original $499/ea price is falling as expected.  SameDay now has 'em for $429 (but note that they ship out of their NJ warehouse so if you're on the US west coast, I suggest having them shipped priority to limit handing and transit time).  In any case, I A-B'd them with the mid model Yamaha BR12s (which are half the price of the PRX412s and I think slightly better than JBL's JRX series) and the difference was quite obvious.  Although the BR12s always sounded good enough for my purposes, they sounded quite mid-rangy and just a bit plastic-ey when directly compared to the PRX412s.  I'm not sure what 'plastic' sounds like but the PRXs were just a bit more 'real' sounding.  The PRX has MUCH more high-low separation (I would even say purposely mid-scooped) with deeper fuller lows and higher highs.  I could almost use these for home stereo speakers.  And the PRXs are made just over the border in Mexico - in my book not quite as good as the 'Made In USA' label on the BR12s (hometown bias) but about 6000 miles mas bueno than the increasingly prevalent 'Made in China' label on most products these days.  Build quality appears superb and they look very nice overall.

My only complaints of the PRX (in order of severity) are as follows:
1.) They only have one handle - and it's on the side, which is just plain stupid.  The BR12's got it right - one handle, right in the top, making transport a breeze.  If I get ambitious, I'll be adding handles in the tops of the PRXs.
2.) The highs on the PRX412s are a bit directional (sound changes noticeably more than about 20 degrees off center) and right in front the highs are so present they tend to be a little crispy sounding.  I'll definitely be pulling down the 16k slider on my amp when I run these.  Might even consider beam blockers of some sort over the middle of the cones horns.
3.) The combination 1/4"-Speakon connectors are less than ideal for 1/4".  I don't have any Speakon to test with, but with the 1/4" - and this is a bit connector specific as not all designs are exactly the same - the connection is scratchy when the cable is moved, indicating a somewhat marginal connection.
4.) The rubber 'feet' on the cabinets are very nearly pointless.  They stick out less than 1/8" from the cab surface.  The result, especially with only one handle on the side and zero corner protection, is that the cabinet corners are likely to incur damage from contacting the ground whenever the speakers are picked up or set down.  Seems these speakers are designed primarily for permanent installation - because the mobility design elements are a complete failure.

Bottom Line: For the newly reduced price, I'm happy enough with these speakers.  I think they could stand to be at or below $399 to really demand a chunk of market share, but at $429 and with rather limited choices around this pricepoint, they were close enough for me.  From a sound standpoint alone, they are a noticeable step up from the BR12s and they are 8 pounds lighter than the Yamaha S112V Clubs - the obvious direct upgrade from the BR12s.  The physical design flaws (yes, JBL design team, they are flaws) are not quite catastrophic - and a couple can be readily corrected by the consumer.

< For reference, I'm planning to use these for mains, to amplify vocals and acoustic instruments for relatively small sized indoor and outdoor venues.  The above comments are based on running vocals, acoustic guitar, and pre-recorded music to these speakers through a simple old school Peavey powered mixer head (XR-600F). >
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: David Morison on February 05, 2013, 07:27:10 AM
2.) The highs on the PRX412s are a bit directional (sound changes noticeably more than about 20 degrees off center) and right in front the highs are so present they tend to be a little crispy sounding.  I'll definitely be pulling down the 16k slider on my amp when I run these.  Might even consider beam blockers of some sort over the middle of the cones.

A beam blocker over the cone won't do anything about high frequencies coming from the horn. Placed over the horn, it'll probably do too much damage to the overall HF response of the system and hurt intelligibility too much.

Quote
3.) The combination 1/4"-Speakon connectors are less than ideal for 1/4".  I don't have any Speakon to test with, but with the 1/4" - and this is a bit connector specific as not all designs are exactly the same - the connection is scratchy when the cable is moved, indicating a somewhat marginal connection.

This should be irrelevant if your cabling is routed with enough thought to prevent movement while the speaker is in use. If you can't ensure that, time to upgrade to speakons  ;)

Edit - tidied up quotes
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Scott Wagner on February 05, 2013, 09:39:57 AM
1.) They only have one handle - and it's on the side, which is just plain stupid.  The BR12's got it right - one handle, right in the top, making transport a breeze.  If I get ambitious, I'll be adding handles in the tops of the PRXs.
When carrying my PRX6xx, I never touch the handle.  The handles in these boxes are all but worthless.  When I get loaders at a show, they always grab it by the single handle and beat the crap out of their legs and/or the box in the process.  I try not to let the loaders carry the speakers.  Personally, I think they could've simply left the handles out of the design.  They carry fine without them.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Mike Stewart on February 08, 2013, 12:21:06 AM
A beam blocker over the cone won't do anything about high frequencies coming from the horn. Placed over the horn, it'll probably do too much damage to the overall HF response of the system and hurt intelligibility too much.
Edit - tidied up quotes
David - Yes, I was referring to the horns (but somehow it came out 'cones', which I realize now implies the drivers).  I'm thinking I'll just stick some thick felt pads (~1-2" diameter) on the inside of the grill right in front of the center of the horn.  If I can't readily find a material and size that dials down the super highs and evens out the directional aspect a bit without hurting the clarity, then of course I'll just abandon the idea.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: David Morison on February 08, 2013, 07:22:12 AM
I'm thinking I'll just stick some thick felt pads (~1-2" diameter) on the inside of the grill right in front of the center of the horn.  If I can't readily find a material and size that dials down the super highs and evens out the directional aspect a bit without hurting the clarity, then of course I'll just abandon the idea.

Aha, that makes more sense than what I was imagining. If you've the patience to try different thicknesses, sizes and densities, you may well be able to come up with something viable.
Good Luck,
David.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Bob Leonard on February 08, 2013, 08:17:13 AM
Don't use felt, use a circle of reticulated foam about 3" across.
Title: Any reviews of the new JBL PRX400 series?
Post by: Samuel Rees on February 08, 2013, 09:14:15 AM
You could also use some kind of processing. I wonder what tunings jbl has out there, I imagine there are driverack presets...
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tom Burgess on February 08, 2013, 06:19:51 PM
You could also use some kind of processing. I wonder what tunings jbl has out there, I imagine there are driverack presets...
Last I looked there were XTi2 files for the PRX4XX stuff.  May be different now, though.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tim McCulloch on February 08, 2013, 10:55:02 PM
Last I looked there were XTi2 files for the PRX4XX stuff.  May be different now, though.

Not that I see in SA 3.4...
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tom Burgess on February 09, 2013, 08:19:25 AM
Not that I see in SA 3.4...
Scroll down this page....

http://www.jblpro.com/catalog/general/technicallibrary.aspx?CatID=18&Run=1

I'm a little surprised that they haven't updated at least the PA+ files for the unpowered PRX boxes.  They've obviously got the tunings together, surely those updates are coming in the not too distant future.

edit - iPad auto-spell got me... or maybe it was our 3 yr. old.   :)
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Tim McCulloch on February 09, 2013, 10:06:45 AM
Scroll down this page....

http://www.jblpro.com/catalog/general/technicallibrary.aspx?CatID=18&Run=1

I'm a little surprised that they haven't updated at least the PA+ files for the unpowered PRX boxes.  That've obviously got the tunings together, surely those updates are coming in the not too distant future.

That's why I phrased my reply the way I did... someone simply downloading SA will not find those tunings.
Title: Re: Any reviews of the new JBL PRX400 series?
Post by: Mike Stewart on May 27, 2013, 11:57:56 PM
Ok, a couple of quick pictures to address the feet (I know, not audiophile stuff, but important if you're a gigging band and hauling these speakers around). 
In summary,
1.) I made some feet extenders (which increased the foot height from nearly nothing to 5/8") and
2.) I moved one of the rear feet to the side edge. 
Recall that these things only have one handle - and it's on the opposite side of the newly located rear foot.  In the unmodified state, grabbing the handle with any upward force tilts the cabinet so the rear-side corner (where the foot now resides) immediately hits the ground.  Surely any used versions of these down the road are likely to have significant damage to the cabinet bottoms and to that corner in particular. 
No progress on the other issues I listed previously and I'm actually liking these speakers quite a lot. Glad I got them.

(http://i872.photobucket.com/albums/ab282/micstew/PRX412/IMG_2916s_zps30960780.jpg)
(http://i872.photobucket.com/albums/ab282/micstew/PRX412/IMG_2919s_zps7d0d370a.jpg)