After reading a lot of discussions in the forum i come up with the following:

I always want to see things in proportion. 2-way systems mostly mis something in the sound they produce.
I think that sub-bass can only be produced with woofer from 15" and larger. then is the logical step that 1 15" woofer, needs a 12" for mid (or 2 8") and 2 15"-es need 2 12"-es.
And double 18" needs double 15".

The Eminence lf are ment for subbass, so if you would cross them above 1k they won`t sound good.
Do almost all the PI speakers use 2-way with passive crossings?

I dont consider passive crossing networks handy for the purpose i use the loudspeakers. A active crossovernetwork is far more better than passive. I also use a compressor/limiter for the wellness of my set.
so if you people would really hear something nice, try a active system.

Why? i`m interested in the PI, so why not talk about them.

Like i said i got two kappa lf`s where i`d like to build new kabinets for, and i`m not sure what type suits best for these drivers.

Maybe you could tell me what`s best, and maybe you like to give your opinion to my message.

In the pro audio directory they don`t talk lot about speakers. and certainly not about eminence and rcf drivers.

I finaly found a place where i can talk about my passion!

Sorry if i look stubburn!

Just my ears, a basic meter and some decent gear, so take it for what it is worth. (my other loudspeakers are acoustat's and they definately do midrange well. The Pi's hold their own even in exotic company)

Thomas F.

What kind of active filter do you use?

And what sort of sets did you build?

Thanks for your reaction!

Erik

I think these are good subjects. As for your question a few lines down, I would want to see frquency response graph for that 12" and please know that this is a little out of my expertise. I feel that an active solution would be best in your case. Something simple wired between your active X-over and your low frequency amplifier. Passive inductor coil (is this the spool you speak of?) might be too steep in rolloff and reactive components are going to take away from what you are doing with the active crossover. Most systems can benefit from the right active setup. Coils can take away from the amps ability to drive your bass units, and can reduce sensitivity, thus making your problem with louder tweeters even worse. I will think more on this. Maybe we should handle this off forum as it is not very PI concerned. Feel free to email me. I may know some links that will help.

As for my setup, it is for home use. I wanted to merge strenghs of home and nightclub sound. Waynes speakers have allowed me to realise this.

-Theater 4Pi loudspeakers
-Rane AC23 active crossover
-Two Adcom gfa 5400 amplifiers (125 W/C more than enough with 4Pi's)
-Adcom GFP 555II preamp. (maybe a bottlehead foreplay soon)
-California audio Labs Icon MkII CD Player
-Thorens TD 320 MkII Turntable w/ Sumiko Blue Point Special pickup
-Tandberg cassette deck
-Pioneer FM Tuner

The X-over is 4th order linkwitz/Riley w/ phase alignment. you can also add high frequency compensation with a little solder and a couple of small capacitors. I will still use the passive Pi X-over a lot. it is my reference, and I do not need huge power of two amps in my home.

These amps work great with sensitive speakers as they give a few watts of class A operation. about right for all normal listening.

Thomas F.