Jbl 2242

[spkrman57]

I'm not sure of the message intended here. I understand some folks look at not crossing over at certain frequencies due to resultant output.

I run my 2226's full out(except a single coil .7 mh to trim rising midrange response) and they are 20db down at 2khz(per Pi speaker forum).

I run my 1" compression drivers with 3rd order (18db/oct @ 1.6khz) and use passive HF compensation(2 resistors and cap).

I have heard from some that the 2226 is horrible at reproducing music up to 1.6khz, but I have enjoyed the sound quality that system delivers.

No, it will not match that of a "High-end" JBL system, but very musical to listen to. By the way, that system is basically a "4 Pi-pro" system(Wayne Parham).

So are you telling me that 500hz 1st order on the 2242HPL is a bad thing???

Ron

[4313B]

I'm not sure of the message intended here.

I'm looking for reactions to the article.

So are you telling me that 500hz 1st order on the 2242HPL is a bad thing???

Let's see what everyone has to say.

[Earl K]

Ron;

So are you telling me that 500hz 1st order on the 2242HPL is a bad thing???

- That would seem to be the unstated suggestion .

- I'd try it anyways ( you've already got the significant parts ) - see if it does or doesn't sound correct / then try to do a forensic analysis over why ( one way or another ) .

Re; coil values . Here's a useful formula :

Coil Value = 159 x ( the AC impedance at desired xover point ) divided by desired Xover point ( in hertz - not Kilohertz )

NOTE: You need to obtain the AC impedances for the area you intend this coil to work in - or - you can just accept the empirical "trial & error method .

- so ;( 159 x 7 ) / 500 = 2.226 mh
- since your are most likely dealing with a rising midband response, you'll probably want a bigger coil value ( personally, I'd be thinking of doubling the value ) .

Giskard;

I'm looking for reactions to the article.

The article is well written and certainly underscores why attention to minimal dissruption in this frequency area is important ( especially for faithful reproduction of female voices ) - tyically male voices do get more inherent support from music and therefore get off a little easier when "dissrupted" .

- I still vividly remember crossing my 2482/2350 combo over at 500 hz Butterworth ( for a few months back in 1978 ) with my 5234 crossover. There was an obvious increase in "articulation" or "consonant content" with the Beatles "tribute" band that I was mixing .Those vocals were all over the "dissruption" range. I'm not going to bother doing the "Forensic" as to why it worked better - I'll leave that to others to suffer through and balance out all the seemingly endless list of pros & cons. Oh, horn-loaded mids ( 2220a in 4560s ).
- Still, ultimately, based on power handling concerns I moved the point back to 800 hz .

[Earl K]

- The above pic is of a studio monitor made by Meyers that uses a 500hz crossover point .

[4313B]

Don't they make hotdogs or something?

[spkrman57]

I think mine will be used as subs(80hz cutoff) below the Edgarhorn midbass. I have 2 sub woofer plate amps that are sitting around collecting dust I can use.

I still will have a 500hz crossover for the Edgarhorns. The upper limit of the 80hz midbass horn is close to 500hz, and 1st order crossover will be used.


Ron