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Bohlender Graebener Neo8 Planar Transducer
I want to operate these down to 800 hz in a 2-way configuration with the beyma 10G40 and be able to listen loud. What sort of slope would keep these safe? 18db? 24? Can it be done?
Is there a back wave that comes from the rear of the Neo 8 and 10? Dipole?
Yes these two models are open back and can be used for a dipole application.
Date published: 2014-06-11
mounting plate ?
where can i purchase a mounting plate for the neo8?
Not quite sure what you mean by mounting plate. The Neo 8 is designed to be either used open air back or in a sealed space. If open air - you would have a baffle with an opening and afix the driver to the face with thin speaker gasket under the edges. Then the sound would radiate front, and rear reflection offf the back wall - often referred to as bipolor or dipolar. In a sealed situation - you want at least 100 cubic inches of volume lightly stuffed. While the Neo 3 does have an optional mounting plate - there is no such plate available for the Neo 8
Date published: 2013-02-03
Use in a 2-way surround
I am considering using the neo10 in a 7.2 surround system. Im considering a mutitude of woofers and leaning towards something with fast transients. Maybe 2 - 6".. I want to keep the efficiency high while retaining dynamic responce. i will most likely high pass the entire speaker at around 80-90 - ish and xover the woof and transducer at 900-1000 at an 18 db slope.I would like some recomendations on my design thought and some suggestions for woofers.......
The NEO10 is a state-of-the-art driver. You will be impressed with the performance in a well integrated system. BG supplies drivers to companies retailing speakers of over $25,000 using variants on this design. While the driver has extended response to 20K, it beams and has impedance issues in the upper range. It's sweet spot is up to about 5000hz. Crossover from the NEO10 to a NEO 3PDR 6db/oct. If you use the NEO 10 down to 500, go with a 24db/oct crossover - more linear than an 18. If you cross at 800+, you can skate with a simpler 6db/oct and still have a lot of headroom. Without spending a fortune on woofers which is easy to do, yet getting a driver without compromise - check out the Morel MW164. It's a work horse and blends stunningly with the NEO series. I currently am running MW164 with NEO8 and NEO3PDR with 6db/oct at 500/5000. The mids and highs are open air and the woofs are in sealed enclosures with a Qts of .707. Have fun with your project
Date published: 2012-06-30
Use as a mid/tweeter?
I'd like to cross this at 800 Hz and use it as a midrange/tweeter in a 2-way. How well does it handle high frequencies, though? Assuming I used the recommended notch filter at 12k Hz, would it match a dedicated tweeter, or should I plan on a 3-way system?
I would suggest giving it a shot on its own, at least initially. I cannot dictate what will (or will not) sound "good" to you, specifically, but you can always add a tweeter later if you determine that the upper-octave performance of this product isn't sufficient.
Date published: 2012-03-08
Are the terminals compatible with push-on disconnects? I would like to avoid soldering on these drivers.
Yes, the terminals are male quick disconnects. However, rather than the 3/16" size you mentioned, you'll want the 0.205", which I've referenced below for your convenience. The 3/16" connectors will be too small.
Date published: 2012-10-23