I acquired two full 4 pi kits from someone going a different direction. All products new with premium built crossovers
I sourced two JBL 2226 hpl woofers from a local used music instrument store.
I need to start sourcing parts to make a 3rd for the center channel. I've seen the posts to remove the port and to center the horn. Is this still correct, or should the port be moved somewhere else?
Is there any changes to the crossover that needs to happen? I couldn't find anything in the FAQ.
Is there a preferred method of raising the speakers. I have access to some large beams and could do solid wood risers. Or something different?
Wayne Parham Messages: 18787 Registered: January 2001
Illuminati (33rd Degree)
That's awesome! Hope it was a good deal for both you and the seller.
The deal with the center channel is the port can be removed for aesthetics. There isn't a benefit when doing so, in fact, there's a slight penalty. But only slight. The spectral match is still very good from 200Hz up, and below that you're in the modal range anyway. So it's not bad, and it looks better if the left and right speakers are made in mirror images - each with the tweeter towards the outside. The center speaker can have the tweeter centered when the port is removed.
Best to have the mains 12" to 15" up off the floor, with flanking subs placed slightly behind and beside the mains, sitting on the floor so slightly below the mains too. Left main has a left flanking sub and right has a right sub. Each is passed a (100Hz second-order) low-passed copy of the signal sent to the main it is flanking. This approach mitigates SBIR and higher-frequency room modes and also compensates for baffle step while providing increased bass extension.
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