Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

PA Systems A forum for discussion of all parts of a sound reinforcement or DJ system: loudspeakers, mixers (desks) etc.

JBL SRX800 series or better
JBL SRX800 series or better
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 21st September 2019, 03:10 AM   #1
seedlings is offline seedlings  United States
diyAudio Member
 
Join Date: Apr 2007
Default JBL SRX800 series or better

Compared to JBL SRX800 series, what is better or similar? Would pay for a cab with a few more dB headroom and oriented horizontal instead of vertical, and a similar 90 x 50 coverage. Whatís out there for $1500~1800 per cabinet? Iíve been considering Yorkville, EV, etc, but I donít know esoteric brands. Just now heard of Heinz during research.

Looking at passive for now.
  Reply With Quote
Old 21st September 2019, 03:39 AM   #2
Sonce is offline Sonce  Macedonia
diyAudio Member
 
Join Date: Jan 2014
Location: Macedonia
JBL SRX800 series is active, not passive.
Active RCF NX 45-A is hard to beat.
  Reply With Quote
Old 21st September 2019, 11:21 AM   #3
David Morison is offline David Morison  Scotland
diyAudio Member
 
Join Date: Nov 2013
Location: Aberdeen, Scotland
Sonce - please see link: SRX800 Passive Series Products | JBL Professional
  Reply With Quote
Old 21st September 2019, 04:17 PM   #4
seedlings is offline seedlings  United States
diyAudio Member
 
Join Date: Apr 2007
Quote:
Originally Posted by Sonce View Post
JBL SRX800 series is active, not passive.
Active RCF NX 45-A is hard to beat.
Iíve been looking at RCF too, a new brand to me. Any way to quantify the difference between the JBL PRX815 (powered) and the RCF NC45-A?
  Reply With Quote
Old 22nd September 2019, 10:43 AM   #5
Sonce is offline Sonce  Macedonia
diyAudio Member
 
Join Date: Jan 2014
Location: Macedonia
Quote:
Originally Posted by David Morison View Post
Sorry, without looking I mixed up, was thinking "P" series stands for "passive". So, SRX800 series is passive and SRX800P series active (Powered).
If you need only one pair of loudspeakers, active (powered) are the most economical and practical.
Quote:
Originally Posted by seedlings View Post
Any way to quantify the difference between the JBL PRX815 (powered) and the RCF NC45-A?
Very important is max SPL. RCF NX 45-A has 133 dB peak SPL, which is excellent.
On the other hand, JBL SRX815P is quoted as 137 dB peak SPL - which simply is not possible! With inbox 2000 W amplification, it's sensitivity then must be 104 dB/1W/1m - which is impossible. Passive version SRX815, with the same drivers inside, has max SPL 130 dB peak, which is very good.
So, SPL wise, the RCF has slight advantage over JBL.

Other advantage is a huge 4" high-mid range driver in the RCF NX 45-A, over the 3" driver in JBL SRX815P. NX 45-A has crossover frequency of 650 Hz (covering the most important mid range), vs SRX815P unspecified crossover frequency (1900 Hz in the passive version SRX815).

Last edited by Sonce; 22nd September 2019 at 10:49 AM.
  Reply With Quote
Old 22nd September 2019, 03:49 PM   #6
brig001 is offline brig001  United Kingdom
diyAudio Member
 
Join Date: Jan 2009
I don't think that the JBL or the RCF are suitable for horizontal mounting. Martin audio do some and there may be some coaxial designs out there. How important is horizontal mounting?

Brian
  Reply With Quote
Old 22nd September 2019, 08:47 PM   #7
seedlings is offline seedlings  United States
diyAudio Member
 
Join Date: Apr 2007
Quote:
Originally Posted by Sonce View Post
Sorry, without looking I mixed up, was thinking "P" series stands for "passive". So, SRX800 series is passive and SRX800P series active (Powered).
If you need only one pair of loudspeakers, active (powered) are the most economical and practical.

Very important is max SPL. RCF NX 45-A has 133 dB peak SPL, which is excellent.
On the other hand, JBL SRX815P is quoted as 137 dB peak SPL - which simply is not possible! With inbox 2000 W amplification, it's sensitivity then must be 104 dB/1W/1m - which is impossible. Passive version SRX815, with the same drivers inside, has max SPL 130 dB peak, which is very good.
So, SPL wise, the RCF has slight advantage over JBL.

Other advantage is a huge 4" high-mid range driver in the RCF NX 45-A, over the 3" driver in JBL SRX815P. NX 45-A has crossover frequency of 650 Hz (covering the most important mid range), vs SRX815P unspecified crossover frequency (1900 Hz in the passive version SRX815).
^Thank you for this. I understand these two have similar output, but I see the NX45-A is a two-way cabinet with a 1.4” HF. Which model has a 4” mid? ****edit: I see now the HF is a 4” driver. Wow. Does it play 18kHz? A lot of the 2” start rolling off at 12k. Also, the JBL is probably SPL spec’d offbof the 3200W peak power. Like when snap when the bass player powers on his DI amp while the sound system is peaked.


Quote:
Originally Posted by brig001 View Post
I don't think that the JBL or the RCF are suitable for horizontal mounting. Martin audio do some and there may be some coaxial designs out there. How important is horizontal mounting?

Brian
Horizontal tweeter orientation would allow stacking of two cabinets with less lobing/comb filtering, but that’s not an option... would be nice if someone made a 2x12 or 2x15 with a 90*x40* horn in the middle. I’ve considered building and bi-amping, using a MiniDSP with our existing amps.

Last edited by seedlings; 22nd September 2019 at 09:00 PM.
  Reply With Quote
Old 23rd September 2019, 04:50 PM   #8
TBTL is offline TBTL  Germany
diyAudio Member
 
Join Date: Oct 2013
Quote:
Originally Posted by seedlings View Post
Horizontal tweeter orientation would allow stacking of two cabinets with less lobing/comb filtering, but that’s not an option... would be nice if someone made a 2x12 or 2x15 with a 90*x40* horn in the middle. I’ve considered building and bi-amping, using a MiniDSP with our existing amps.
I'm afraid not many of such loudspeakers do exist. For good horizontal dispersion, a 15" woofer must be crossed at a low frequency to the horn. For one woofer this is doable, but a compression driver cannot keep up with two 15" woofers.

If a higher output is required, a solution is to add a midrange driver to make it easier for the compression driver. The woofers can be doubled or horn loaded. An example is the Martin Audio THH (horizontal) or THV (vertical).

Last edited by TBTL; 23rd September 2019 at 04:59 PM.
  Reply With Quote
Old 23rd September 2019, 05:27 PM   #9
seedlings is offline seedlings  United States
diyAudio Member
 
Join Date: Apr 2007
Quote:
Originally Posted by TBTL View Post
I'm afraid not many of such loudspeakers do exist. For good horizontal dispersion, a 15" woofer must be crossed at a low frequency to the horn. For one woofer this is doable, but a compression driver cannot keep up with two 15" woofers.

If a higher output is required, a solution is to add a midrange driver to make it easier for the compression driver. The woofers can be doubled or horn loaded. An example is the Martin Audio THH (horizontal) or THV (vertical).
That THH is fantastic. What’s the price tag? $5k USD?
  Reply With Quote
Old 23rd September 2019, 05:38 PM   #10
TBTL is offline TBTL  Germany
diyAudio Member
 
Join Date: Oct 2013
Good guess, it's £3,250.00 incl. VAT according to http://www.dynamiteaudio.co.uk/Speakers/Martin-Audio
That's USD $4038.


Note that the 70 x 40 deg dispersion does not meet your 90 x 40 or 90 x 50 deg requirement.

Last edited by TBTL; 23rd September 2019 at 05:40 PM.
  Reply With Quote

Reply


JBL SRX800 series or betterHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Inductor series sestistance, effect on Qts, 2 identical drivers in series shmb Multi-Way 6 11th September 2015 04:54 PM
Three 10" 4Ohm subs, wired in series or series-parallel? Nagamitsu Car Audio 38 19th February 2014 11:16 PM
National Semiconductor LM series & Ti LM series differences that affect circuit funct theaudiopath Chip Amps 50 10th February 2014 08:53 AM
Quality of Hammond 300 series power transformers compared to 200 series? G Tubes / Valves 10 3rd August 2012 07:32 AM


New To Site? Need Help?

All times are GMT. The time now is 02:08 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki