Super Newbie

J

John Ford

Freshman
Sep 27, 2014
1
0
0
Hey folks,

I was hoping y'all might be able to help me figure out how to set up a system. I know practically nothing--but I've been generously gifted 2 JBL SRX 712m's, and I want to make the most of them. Since I'm just a hobbyist, I really don't understand too much of the complicated stuff, but am interested in learning more. I'm not sure exactly what applications I'll use them for, but I am interested in maybe DJing some weddings, or putting on some back yard shows, maybe even doing some clubs or helping my friends' bands out. So, I bought a Peavey IPR2 5000 watt power amp (which gets 890W RMS a side) and bought a cheap mixer (some Behringer, not sure of the model) along with all the necessary cables. WOW! These speakers pack a serious punch--only thing is, since they are so small the bass seems a little lacking. Enter my friend who is selling his JBL JRX 118 (powered.) So I bought it from him cheap, figuring I can always sell it if it doesn't work out.

Here's where you come in.

2 JBL SRX 712m's

Peavey IPR2 5000watt power amp

JBL JRX 118 (powered)

????

What is the best (efficient, less costly, quality) way to set it up so that the bass frequencies go to the sub and the rest go to the 712s? I'm wondering if I should sell the mixer and get a mixer with a built-in crossover, and if so, what kind of mixer? Or just get a cross-over, if so, what kind? Is there anything I'm totally missing here? Money isn't extremely tight, but I prefer a cost-sensitive solution. Also, if there's any books on this subject you would recommend, I'd gladly take some suggestions.

Thanks,
John
 
Re: Super Newbie

John Ford said:
Hey folks,

I was hoping y'all might be able to help me figure out how to set up a system. I know practically nothing--but I've been generously gifted 2 JBL SRX 712m's, and I want to make the most of them. Since I'm just a hobbyist, I really don't understand too much of the complicated stuff, but am interested in learning more. I'm not sure exactly what applications I'll use them for, but I am interested in maybe DJing some weddings, or putting on some back yard shows, maybe even doing some clubs or helping my friends' bands out. So, I bought a Peavey IPR2 5000 watt power amp (which gets 890W RMS a side) and bought a cheap mixer (some Behringer, not sure of the model) along with all the necessary cables. WOW! These speakers pack a serious punch--only thing is, since they are so small the bass seems a little lacking. Enter my friend who is selling his JBL JRX 118 (powered.) So I bought it from him cheap, figuring I can always sell it if it doesn't work out.

Here's where you come in.

2 JBL SRX 712m's

Peavey IPR2 5000watt power amp

JBL JRX 118 (powered)

????

What is the best (efficient, less costly, quality) way to set it up so that the bass frequencies go to the sub and the rest go to the 712s? I'm wondering if I should sell the mixer and get a mixer with a built-in crossover, and if so, what kind of mixer? Or just get a cross-over, if so, what kind? Is there anything I'm totally missing here? Money isn't extremely tight, but I prefer a cost-sensitive solution. Also, if there's any books on this subject you would recommend, I'd gladly take some suggestions.

Thanks,
John
Click to expand...
Based on what yo have said-you need to keep it simple to start.

i highly suggest an ANALOG crossover. You can get used ones pretty cheap and I don't think anybody is making high end analog units these days.

An analog unit si going to be much easier to understand and get you started.

i would suggest starting with a crosover freq of 100Hz and adjust to taste.

There will be a freq knob and level adjustments for the lows and highs. You can adjust as needed.

Depending on the unit you end up with-there may be all sorts of other controls-but no need to go into that now-as it will just complicate things.

Start simple and LEARN.
 
Re: Super Newbie

Ivan beat me to it, but I was going to say basically the same thing! The JRX subs don't have an internal crossover as most newer powered subs do, so a used analog crossover is the way to go. Your are correct, the SRX 712s really put out and I think you will find that they will quickly outrun the JRX subs. For smaller gigs I use a SRX 712 over a PRX618S-XLF per side using the internal crossover in the 618s.
 
Re: Super Newbie

The JRX will leave you completely underwhelmed in terms of quality, sound and power - especially compared to the SRX's. I suggest you purchasing a PRX718xlf which is the successor to the PRX618xlf that Chuck mentioned. Bigger amp, built in HP filter (no need for crossover) and far superior sound and build quality than the JRX. There are other subs that are more in the class of the SRX712 but not all have the HP built in.
 
Top Bottom