BASS LINE

1.) A reflex loaded rig? I’ve searched to find out what this actually means and I can’t find definitive answer?

2.) So the ‘12” Horn Upper Mid Cabs & 15” W Bins Bass Mids’ amplify any driver put in? 

Meaning the specifications go out of the window making it harder to calculate frequency ranges for crossovers?

3.) So in systems where you do see a mix of cabs how have they ‘dialed in’ or calculated the frequencies? Trial, error & ear or calculated at design stage? Is there a formula for box type/measurements with driver specifications? Is there a range of where High/Upper Mid/Lower Mid/Bass should sit/exist?

4.) Given what I have and discounting the Jamo Drivers & new box styles - what sort of 12” Driver should I be looking at to sit above Lower Mid & Bass drivers I have? A certain frequency range? (I just don’t see sense in using the Jamo drivers and storing the cabs if I can sell them whole and them be of use to someone)

2.)  Horns add acoustic load to the driver cone so it must be more rigid and durable to not get torn up. This load also increases the electrical impedance generated by the driver so it is common to use lower impedance drivers, and if the driver is mounted in a sealed enclosure it can't dissipate heat as efficiently and can be easier to overheat. The raw driver specs don't go out the window but the ideal driver will have somewhat different specs than a bass reflex driver and the horn cabinet design determines the operating range of the speaker.. not the driver. 

3.)  All too often there was lots of trial and error, users sometimes spend years experimenting(blowing up) different drivers before finding units that work well.

4.) As I mentioned earlier, if you want to use what you have on hand you don't need any 12" drivers at all to make a functional system, either one of the 15" drivers you have will operate up to where the compression horns are crossed over. What you really lack are suitable sub-drivers. 

I found the model number stickers. The x4 EV Cubo Subs came loaded with (vintage) x2 Omega Pro 15A (151038B-EP 67-0346A 0005) (Red Planet Gold Label) & x2 Kappa Pro 15LF-2 (151829A-EP 67-0346C 0036) (Blue Planet Logo on Gold Label) the fella I got them off was using them above his scooops as a x4 with the Omegas in the middle and the Kappas on the outer.

I’ve made life hard for myself rushing in I suppose with more selling and buying to do!

I will use the x2 15LF as my Bass as I will only be using half a side of stack initially anyway!

So I suppose I should look for another x2 Kappa Pro 15LF-2 for the other x2 EV Cubo Subs. Do you think the current version would be a good match as I cant see me getting hold of x2 of the old Blue ones I have?

Kappa 15LF-2

(BL of 17.5)

(Xmax is 6.7mm)

(8ohm)

https://eminence.com/products/kappa_pro_15lf2#specifications

Do you think the x2 Omega 15A would work in the x2 W Bins I have? Or is imepedence to high at 8ohm and Xmax at 4.8 too low?

Omega 15A

(BL 21.6)

(Xmax is 4.8mm)

(8ohm)

https://eminence.com/products/omega_pro_15a#specifications

I know I’m trying to fit a square peg into a round hole at times and I understand using/setting the drivers as close to how they where made to be used will get the most out of them and creates the best outcome but I’m as interested in the learning side as I am with creating a perfect system.