JBL SRX835P Reviewed (Powered Monitor)

[FaFaFa]

I am very interested in this topic, it is already a while since you continued the discussion... Have you had any new experiences? Any other PA speakers to recommend?

I'm looking for one with little hiss and 36 cm woofers...
I hope someone has ventured into these experiments again in the meantime

 

[multichannel_guy]

Anyone know if the PASSIVE version, SRX835 (without the P) measures better? Thanks.

 

[Ziofrenko]

Damn, I really thought these would do better. How about measuring them again but WITHOUT GRILLS?

That tweeter should not be that bad.

all CD + horn have this problem: at 95db SPL they distort like a or worst an domestic dome with no same clearly frequency response, are dead around 15/18khz with evident break-up, and with worst impulse response.
there are CD near to be hi-fi oriented but aren't cheap and you cannot find on a commercial speaker.

 

[Ziofrenko]

Its not a hifi speaker, but looking at the FR it does well in the midrange. The trouble starts in the treble over 10k. What imo looks much more worse than it realy is. That shelfing should be fixable. And 4-5m away that upper treble should go down by it self a bit. So i think nothing that could take out the fun out of the party.

over 4khz you have 0.5% thd, over 5khz you have 1% thd AT 96dB!!!!!
is far away from "trouble"
this is common on CD + horn... and this from JBL are really good horn... obviusly at 10m of distance the distortion came all from ambience.

 

[Ziofrenko]

Have you heard them working at their intended use?

honey, there are 3 way PA speaker that cost 15/25k$ without amplifier... this is a cheap pro PA speaker!

 

[Ziofrenko]

JBL has similar speakers designated for cinema. I am wondering if they would be any better for Hi Fi applications, I have no idea. I think of the PA speaker as public address, not Hi Fi, would cinema be any different? You'll find some here, along with the beam arrays.

https://jblpro.com/en/product_families/immersive-rooms

same transducer and same way of work of PA system because they are PA system!

clearly there is just a more stringent calibration and alignment procedure because the movies should listen more or less the same in all Cinemas, acoustics permitting.

 

[Ziofrenko]

Air attenuation is normally a non issue with such small systems. Listeners are typically close to the Speaker (<20m or even <10m at the farest point of interrest).

10/15 meters are a lot for an short throw like this. there are a lot of air in 15 meters....
but above all there is a lot of environment that distorts much more than the speaker distorts!

a PA speaker made to be listened to at short distances like a stage monitor, so around 2 meters, have typical dispersion of 90*60 or 90° conical or greater!!!

 

[Ziofrenko]

I think what @amirm experienced in his listening test is that with proper EQ a live performance speaker's biggest strength shines through, and that's the dynamic performance that's rarely achieved in home audio speakers. As Greg Timbers once said:

For me, Dynamics will make or break the loudspeaker system.

https://positive-feedback.com/interviews/greg-timbers-jbl/

in a live pop/rock concert medium SPL is around 100dB with short peaks at 105/106.
an KH310 with subs or clearly better an KH420 with subs can handle this SPL at 2/3/4 meters with no problem at all in a big room.
the problem is to do 100db SPL on a 5000 quare meters or to do 100db SPl on a 15/20 square meters... to make 100dB on a 15mq room a PA speaker is useless, also the smaller one.
all the pop music you listen was mixed in studio at about 75/80dB SPL...


the question of dynamics depends entirely and solely on the environment!!!!

 

[Ziofrenko]

How can you say that? On @amirm's chart the narrow dip is at around 150Hz. On JBL's chart it is at 600Hz and there is no narrow dip at the German magazine's chart.

On amirm graph the dip are at 600hz like JBL... sorry, but you have to buy some glasses

 

[Ziofrenko]

here have been some advances in magnet materials and a bunch of progress in adhesives but not much else.

ahahahahaah

you have a lot of confusion in your head....

I have already shown you how you can have so much dynamics inside a room with a small speaker... the problem is not the speaker, the problem is the environment to be sonorized.
so much so that in headphones you can have a lot of dynamics, (therefore a lot of SPL), with a very small transducer and 50mW of power...
guess why?! because with an in-ear headphone you have to sonorize half a cubic centimeter...

 

[monkeyboy]

I'm using Yamaha DBR10s for home theater use, and they are great, no hiss, but a bit of fan noise in a very quiet room. I purchased them thinking I need a high spl, but I never listen to anything that loud. A pair of studio monitors or the 8" Yamaha's would work. The viewing distance of a 65" TV isn't all that far so you don't need a pair of cannons...

 

[Ziofrenko]

So dynamic capability has been identified as important but is missing from the current test regime. Extra work and possibly software/hardware but could something like: https://m-noise.org/ be added to the test suite?

dynamic capabilities is in current test regime: it's called MOL!!!!! and so Distortion!!!!!!!!
if I'm not mistaken now amirm has also added power compression tests, and for dynamics you don't need anything else!!!
if you are not able to understand the information that graphs can give it is not the fault of the graphs...

 

[Ziofrenko]

I'm using Yamaha DBR10s for home theater use, and they are great, no hiss, but a bit of fan noise in a very quiet room. I purchased them thinking I need a high spl, but I never listen to anything that loud. A pair of studio monitors or the 8" Yamaha's would work. The viewing distance of a 65" TV isn't all that far so you don't need a pair of cannons...

thanks for your testimony!
this is the one to follow, and a 65" is a great beast of a TV!

it is difficult to make people understand who do not have a clear idea of the purpose and use of a sound level meter.
use sound level meters and you will understand a lot of things, like that listening at 90dB is HIGH volume!!! almost like a rock concert.
if you then connect the fact that a hi-fi speaker makes 90dB with 1 watt at 1 meter, and therefore 2 speakers make about 90dB at 2 meters, the circle is closed!

 

[J.M. Noble]

I work regularly as a live sound engineer, and I shoot for no more than low to mid-90dB SPL levels in small clubs at mix position (as little as 5-6 meters these days now that mixers are tablet controlled). This probably translates to around 3-6dB more right in front of the stage. That's enough to keep up with live acoustic drums (with miked up kick) at the same distance, which is pretty loud!

 

[Ziofrenko]

I work regularly as a live sound engineer, and I shoot for no more than low to mid-90dB SPL levels in small clubs at mix position (as little as 5-6 meters these days now that mixers are tablet controlled). This probably translates to around 3-6dB more right in front of the stage. That's enough to keep up with live acoustic drums (with miked up kick) at the same distance, which is pretty loud!

One of the worst jobs: keeping the volumes low with acoustic drums on stage and maybe even guitar amplifiers... All my respect

 

[monkeyboy]

I usually listen at conversational levels, but when looking at home theater type speaker, most people seemed to want 100+dbA at the listening position...maybe for a explosion and you like to feel it in your chest, but that's not me....I picked up the Yamahas to give them a try and see how the worked out, and see if I really need all that power, plus they have a pretty wide throw....turns out studio monitors would have worked fine. If I revise the system I'll go with 3x powered monitors, and a miniDSP eARC DAC, in a LCR configuration, maybe add a sub. The problem with this set up is appearances with respect to how to mount the center channel....

 

[Ziofrenko]

But a normal big domestic speaker with at least one subwoofer can handle that SPL with no trouble.
To go over 105dB yes is not simple with low sensitivity speaker but ok, this is not the classical room music listening or home theater and probably, as already said, you don't have the classic medium living room.
Yes central speakers can be the problem.

 

[multichannel_guy]

So...I bought the passive version of this JBL speaker.

I gotta say it sounds a lot better than the Revel Salon, which I also audited. The Revel just sounds....boring. Audiophile speakers like the Revel are just boring like the boring audiophiles. This PA speaker is exciting and so much fun at a fraction of the cost.