Listener345 Messages: 2 Registered: April 2026 Location: Philippines
Esquire
Hi, I’m Brian and I’m new here.
I am very interested in building a 3-way system incorporating JBL components including the 2226h (which I already own), 2123h (yet to purchase) and possibly the 2445 (yet to purchase) or the Emilar EA-175 drivers and EH-800 horns that I already have. After searching relentlessly I finally came across the Audio Round Table website. I thought I would stop by to ask for guidance relating to my imagined plan. I stumbled across post #45568 in where almost the same build occurred but because I am a new member, I didn’t know how to inquire about this thread.
Now I am in the position to where I am messaging you directly in the hopes I can get the info I’m looking for.
Can you help me?
Wayne Parham Messages: 19030 Registered: January 2001
Illuminati (33rd Degree)
That sounds like a great system!
Do you understand much about crossovers? Do you have any measurement equipment?
The crossover is the brain and heart of a loudspeaker, and measurement equipment is needed to dial it in. You can do a lot with modeling tools, but these days, measurement equipment is available enough you will really want to use measurements in the design and verification process.
Listener345 Messages: 2 Registered: April 2026 Location: Philippines
Esquire
Thank you for the reply, I know the function of a crossover but that’s the extent of my knowledge. I have no gear whatsoever, I don’t even own a PC (I have a Mac) but I do have an idea:)
I was thinking to use a pro electronic crossover and tri-amp the system. This may not be the best way to accomplish the crossover but it’s something I’m somewhat comfortable with trying.
Other than duplicating someone’s proven passive crossover, this idea is all I have.
Wayne Parham Messages: 19030 Registered: January 2001
Illuminati (33rd Degree)
The thing is, even an active crossover needs to be adjusted and calibrated to provide the right transfer function to each driver so that they all sum properly. This requires several measurements on-axis and off-axis.
You may be able to find an active crossover that includes a microphone and can automatically "dial itself in." Such a device might have a "configuration" mode that asks you to place the microphone in several places - one at a time - to allow it to learn. A simpler mode might make adjustments only with the microphone at the listening position. Not as good, but easier to use.
This kind of self-adjusting active crossover might be your best option. But while I can see this technology emerging, I am not sure it is available yet.
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