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I don't want to be misled by the specs, or general overview. Would this driver be suitable for use crossed at 400hz? What about 800hz?
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Only way to know in my opinion is to buy one and listen to it in your room with your typical volume levels.
It does have a surface area larger than an RS180 or PM180, but probably very little X axis travel. There is a very small impedance bump around 200 hertz, not sure how that would affect the sound. -
No fs specified but assume it's around the 200hz mark. The frequency response is, well, interesting to say the least. Huge dip at 500 hz, might be better suited to the higher crossover point perhaps crossing to a small woofer with a shallow lowpass?
Not sure if you're specifically looking to work with a planar or not, but I'd suggest the SB Acoustics MD60N-6 would be a better midrange to work with crossed at that 800hz point.Constructions: Dayton+SB 2-Way v1 | Dayton+SB 2-Way v2 | Fabios (SB Monitors)
Refurbs: KLH 2 | Rega Ela Mk1Comment
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They list 200 to 8k as the usable range, and 70w power handling. Sounds too good to be true. I'd like to know if it can even handle a 400hz x-over point with as much output as a good tweeter.Originally posted by DeZZar View Post
I'm trying to come up with a design with limited vertical response. There's no information in the specs about vertical off-axis, but I'd assume it falls off considerably.
After a closer look at the specs, I see that the horizontal off axis is not what I need, so it's not going to work for this design.Comment
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I almost completely ignore usable range specs as they tend to be highly exaggerated and misleading.I'm certainly not good at this. Just stubborn enough to keep going.Comment
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That planar, as far as I know, is a remake of the B&G Neo10 and may include some "upgrades" specced by Danny Richie. The Neo10 was quite the mid and performed well past expectations and specs would lead one to believe. It might be useful to search for discussions related to the Neo10 to gather insight into what this thing can potentially do, along with its limitations - such as baffle dimensions, or the lack there of and the debate between enclosing the back of it or leaving it to play in dipole.
An example to read up on would be Dan Neubecker's Echelon project. I believe he crossed the Neo10 at 325 and 2100Hz and he ran it open back.Comment
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Apologies for resurrecting an older thread, but I’m interested in some info on this driver too and I didn’t really want to start a new thread.
I’m considering this paired with the PT2522 in a closed back three way. Crossovers would ideally be 3-500Hz and 1500-2000. Does anyone have any experience with the GRS planers? Are they as good as the B&G drivers they appear to be based on or are they subpar knock-offs?
I’ve read everything I’ve been able to find online and the opinions seem to be mixed. The measurements in particular don’t look that great, but it’s really hard to know how much stock to put into them. for one, most measurements, including the manufacture’s are open back with all the weird baffle effects and cancelation that brings. Then there’s the fact that a long planar is probably difficult to accurately measure for distortion and low end resolution.
Anyways, I’m just wondering if anyone on PE has used or tested them. I can and probably will pick up a pair to test myself, but I’d appreciate any opinions before I spend the money. Thanks
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There have been a few builds with the GRS planers and they seem to be fine. I'm running BG Neo 8's in my system, which is active, crossed at 400 and 4K and love them.Comment
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Thanks Ron. I actually went back through the long thread on Diyaudio and everything seems pretty decent. I guess I had started to question the quality based on a few questionable measurements.
Are you running yours open or sealed back? If sealed, did the sub 2k range come all the way back up to give the advertised sensitivity? I’m planning to use a single unit with a couple of spare 12” Faital woofers that I have ( one per side) that are about 96-97db sensitivity, so after minor baffle step loss mounted near the floor, I’ll be pretty close to the advertised specs of the mid and tweeter. This’ll be passive and I’m slightly worried about the woofers being too sensitive. Thanks
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These are the speakers and as you can see the drivers are in a rather large sealed box. The mid is a BG Neo 8-S so the GRS Neo 10 will obviously not be the same. PE still has a no questions asked 60 day return policy.
I use Ultimate Equalizer software to drive the system and all of my driver measurements were taken from 1M on axis with the tweeter.
The Cherry Pi in my sig has a link to the build which contains comments from DIY Iowa where I first demoed them. They finished 2nd in the open unlimited class at the Midwest Audiofest speaker design competition in 2016. You can do great things with a planar mid. I hope the GRS drivers work with your woofers.
RonComment
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Thanks Ron. Did you mean to attach a photo or something? I don’t see the speakers and I can’t find your Cherry Pi’s. I see the picture of speakers I assume are them in the media tab of your account, but I don’t see a sig or any links. Sorry if this is a dumb post, I just don’t use techtalk that much.Comment
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Make sure that you have "show signatures" selected in your preferences. I see the C-Notes and Cherry Pi's in Ron's signature and this is the link for the Cherry Pi's...Originally posted by satx View Post
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Beautiful speakers Ron! And it seems like they sound as good as they look.
lt looks like the mid ended up about 90db on your baffle, is that about right? I think the 8S is more sensitive than the regular 8, if that holds true for the GRS then they may not be quite sensitive enough for my woofers. I believe the GRS 8 and 10 are advertised as about the same.Comment
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The data sheet for the 8S rates them at 94dB and if you look at their graphs they tend to pick the peaks. I don't have anything that I trust to measure actual SPL.
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The data sheet for the 8S rates them at 94dB and if you look at their graphs they tend to pick the peaks. I don't have anything that I trust to measure actual SPL.
NEO-8S-Data-Sheet.pdf
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