Crossover Value Selection - 2226/2446

[duaneage]

The 2226J CAN go to 1600 Hz but the major question is why? You'll get less distortion in the critical midrange frequency by not asking a large bass driver to go any higher than it should. Horns have quick rolloffs below a certain point, do you have a signal generator to test these changes? Just playing music alone can be deceiving sometimes.

I would experiment with a 2nd order network on the woofer and lift the capacitor a bit with a resistor to change the filter shape a bit. Instead of grounding the capacitor put a small resistance between the capacitor and the ground. This will change the slope of the crossover a bit and might match the tweeter a little better.

Alas, trial and error are part of the equation, but also part of the fun. At least you are having fun doing it instead of having to satisfy a marketing department.

[spkrman57]

I use less than 100 wpc(usually less then 10 wpc SE tube). and by using a single coil (2226J = 1.4 mh - 2226H = .7 mh) per Pi speaker Wayne Parham, I get pretty decent results and allows me to use 1" compression drivers that run easier starting at 1.6 khz.

My SE (single-ended) tube amps work well in a small room like I have(12' x 16').

Maybe because I sit off axis is the reason the beaming does not offend me as much.

Also my 650 hz round tractix Edgarhorns tend to beam also and sitting close, but off axis sounds pleasant to me.

If running higher power amps, go with JBL's recommendation of 80 hz - 800 hz for the 2226.

I was searching for different size cabinets used for 2226 when I resurrected this thread!

Ron

[darkmatter]

Wayne over at Pi speakers uses the 2226 up to 1.6khz to mesh with a 1" driver crossed over at 3rd order 1.6khz.

The coil is not used for crossover purposes but instead reduces a natural rising response of the 2226 between 800hz and 1.6khz.

The 2226 is down 20db at 2khz from what I have read from others.

I use the 2226 in this fashion and find the results quite pleasing depending on the amp/2226 enclosure design and very critical is room placement.

You must get them off the ground to avoid a muddiness at 250hz(common to most woofers/midbass drivers placed close to the ground.

Hope this helps!

Ron

Do you know what value of inductor was used on the 2226H?

Thanks

DM

[Mr. Widget]

Do you know what value of inductor was used on the 2226H?

Thanks

DM

Good Luck with that.
That was over 10 years ago. Most of us move on to other projects in that amount of time.



Widget

[grumpy]

post #17 ?

[spkrman57]

Do you know what value of inductor was used on the 2226H?

Thanks

DM

Wayne used 1 mH...I like to use 1.5m H to 2 mH...

Regards, Ron