Welcome! Need support, you got it. Or share your ideas and experiences.
Return to Planar Speaker Asylum
74.238.149.2
Hello, All:I am about to start building the frames for my latest 2-way dipole project, and need some advice. I have acquired a pair of Acoustat 4's that I want to reconfigure as 2+2's to use as bass only panels crossed over to a stacked pair of Gold Ribbon Concepts 30" planar magnetic midrange/tweeters. Crossover will be in the 300-500 cycle range. My question is: Should I put the mid/tweet drivers between the two sets of stacked bass panels, like a much taller version of the original Quad, or should I put them to one side of the panels, like just about every other multi-way planar? Please let me know what you feel to be the pros and cons of both scenarios.
Follow Ups:
I own a set of the Gold Ribbon Concept ribbons, but have only crossed them over to dynamic drivers in a vertical line source. I like the idea of putting the Ribbons between the Base panels... it might let you have a little lower extension for the ribbons. The Gold ribbons should be crossed over 250-600 Hz. However in your scenario, the higher crossove point might work best. And if you haven't already taken care of it( or gotten use to it) the ribbon have that little cavity resonance bump of 4-6 dB at 8KHz that is easily taken care of with Passive or Active EQ.
Hi, GymwearActually, I have never listened to the Golds, but bought them when they became available on the recommendation of our own Duke and the ribbon's designer, Alan Hulsebus. I think I will go with the co-linear layout, and will be using, at least initially, a Behringer crossover/equalizer.
I had been kicking around the idea of a line of dynamic drivers for bass duty, but when the Acoustats came along, I decided planar/dipole bass would be the best match...hope I'm right.
My motivation for this project is mainly due to the shortcomings of my Acoustat 6's. They do so much right, but the "head-in-a-vise" issue is a serious deal breaker, in my opinion. In exactly the right listening position, the 6's can sound spectacular, but move your head even a fraction of an inch, and the image shifts, tonality changes, sound staging blurs, and in short, the listening experience goes to hell. I am hoping that by going with a narrow line radiator from the midrange up, I will eliminate most of the lobing and comb filtering going on with the full-range, 3-panel wide 6's.
Please share your experiences with the Golds...there aren't very many folks out there that have even heard of them, let alone used them.
Say 'Hi' to Alan from Jim Weir, Bruel @ Kjaer.
One sonic problem with the classic side-by-side mounting is that the axis of the mid/highs is displaced a few inches to the side of the axis of the bass panel. So your proposed centering of the mid/tweeters would lead to a more coherent line source.That said, I only notice the displaced axes when I am just a few inches from the speaker. Hmm, a new listening position: ultra-nano-nearfield.
...but, I was tending towards the co-linear...thanks for the endorsement.
| ||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: