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Bohlender Graebener RD50 Planar Transducer
The overview has the frequency range up to 18500hz but the product details say the speaker is usable to beyond audible range. Does this speaker ideally need to be paired with a tweeter or is the response flat all the way up to the top of the audible range
Whether this requires a tweeter or not is entirely up to the end user. 18,500 Hz is beyond most peoples audible range so a tweeter used above this frequency would likely be moot.
Date published: 2014-08-13
What do they mean by Program power handling of the RD50 driver is 135 watts. How does this differ from RMS/70 watt ?
Companies will rate their drivers differently. In this case, RMS is derived by using a single sine wave at a given frequency, which is harder on a driver than program material, IE: music. This is why program ratings are higher than RMS power because program material is generally a lighter thermal load on a driver.
Date published: 2014-05-19
I want a center channel speaker with the RD 50 . I have 2 -55" tall Line arrays that set on each side of my 60" plasma TV Seeing how the Planars have a vertical dispersion, will this work without waves crashing into the l-arrays ?
waves are going to crash regardless of orientation,placement or radiating characteristics,you cant stop that but you can change the net acoustical output(room response)by changes in proximity to room boundaries.
Date published: 2014-05-21
Can you give an example recommended enclosure?
What would a good closed enclosure look like? Can I incorporate a woofer in the same enclosure? Would a trapezoid shape with a woofer at the base be a workable design?
These drivers are closed back which means the enclosure will not affect the sound. These can share a chamber with a woofer.
Date published: 2012-12-12
What woofers would be a good choice to pair with these?
I like the idea of these. I am currently building a line array and since these have a wide freq response I was thinking of doing a Martin Logan Electrostatic-esque type build with these. 8" or 10" in a 1cft box and then these above them. I don't listen at very loud volumes, I just don't want the sub to do all the low end work. I'd want some low-mid punch. If Bohlender Graebener made woofers I'd get a pair of those but since they don't, who would compliment these guys for some low punch around 90-300hz?Thanks in advance!
We have many options that will work well in this passband. The Dayton Reference series mid-basses would work well and are our best sellers.
Date published: 2013-12-21
Can these be run open back? or do they need rear air loading??
I've owned neo 8pdr's for years open back. love em....
Yes, the RD50 can be mounted in an open-baffle configuration with no problems.
Date published: 2011-12-06