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Bohlender Graebener RD48 Planar Transducer

Bohlender Graebener RD48 Planar Transducer

Brand:| Model: RD48
The Bohlender Graebener RD48 was specifically designed as a replacement for the Carver line-source transducer.
A restocked/refurbished, or Open Box unit of the product is available -- see it now
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Weight: 27 lbs.  
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Product Details

Bohlender Graebener RD48 Planar Transducer

The Bohlender Graebener RD48 was specifically designed as a replacement for the Carver line-source transducer. They share the same electrical and acoustical characteristics, which ensures that the same performance and sound quality are maintained. The original Carver transducer was used in some of the Carver Amazing Loudspeaker Series as well as in several Genesis Loudspeakers models. Keep in mind that if you have a Carver element which has blown or otherwise catastrophically failed, there is a good chance the RD48 will suffer the same fate if no changes are made to the system. Be sure to evaluate amplifiers, crossovers, and connections before you install the new RD48! Also note that on some Carver speakers, a small spacer is needed between the mounting flange and the baffle, allowing the front face of the driver to sit flush with the surface.

Specifications: • Power handling: 70 watts RMS/270 watts max • Nominal impedance: 4 ohms • Re: 4.0 ohms • Frequency range: 150-18,500 Hz • SPL: 88 dB 1W/1m • Net weight: 25.2 lbs. • Dimensions: 48" L x 6" W x 1-1/2" D.

Bohlender Graebener RD Series Planar Transducers cannot be shipped or sold to customers that live outside of the United States. There is no warranty extended to customers outside of the United States that purchase any of the Bohlender Graebener RD Series (including the RD75, RD50, and RD40) Planar Transducers from Parts Express.

Product Specifications
  • Tweeter TypePlanar
  • Impedance4 ohms
  • Power Handling (RMS)70 Watts
Bohlender Graebener RD48 Planar Transducer
  • BrandBohlender Graebener
  • ModelRD48
  • Part Number264-704
  • UPC844632052996
  • Product CategoryPlanar / Ribbon Transducers
  • Unit of MeasureEA
  • Product Rating
    (4 Reviews)
  • Weight27 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Bohlender Graebener RD48 Planar Transducer
Bohlender Graebener RD48 Planar Transducer is rated 5.0 out of 5 by 4.
Rated 5 out of 5 by from Excellent product..I got this as a replacement for my old Carver ALS-III transducer. Beautiful clean sound. But when you hear this, you pretty much have to get two... :-)PS: Taking apart the old Carver transducers is also a lot of fun...
Date published: 2012-07-30
Rated 5 out of 5 by from rd48just want to thank the sales dept,dealing with Partsexpress for years! they will not let you down.this driver is killer in so many ways you can build a flag ship speaker that will take you to the event.compliment it with a good ribbon around 2.5 to 4k and a good fast mid bass drivers around 200 to 400hz passive and you are good to go.note a lot of people run active not an option for me i run tube amps.if you you can build a passive crossover you dont have to go active as others say. after all its just a driver and one of the best.also to get the best sound go dipole get out box you will never go back.
Date published: 2012-02-25
Rated 5 out of 5 by from Rd 48 ribbons interface for Genesis G350Best product, better than the original ribbons more details , more improvement. Sound you are not heard on the original ribbons.
Date published: 2010-03-18
Rated 5 out of 5 by from -BG #rd 48" ribbons for carver ALS [silver model]-sound youve not heard w/the stock Carver ribbons [new or rebuilt]-better power handling and longer service life-***REQIRED; [8] 1/4" spacers and [8] 1/4" longer mounting screws-SAFELY shipped and properly packaged ...a Blessing
Date published: 2009-02-16
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Product Q&A

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Bohlender Graebener RD48 Planar Transducer

Dear Sirs, Can i replace only one ribbon or as a pair? This is for Carver ALS 3 loudspeaker. Regards.

Asked by: soutzis1
it would be best to replace in pairs to maintain the correct stereo imaging.
Answered by: Chrisf
Date published: 2015-01-09

Is this an exact replacement for the Genesis 201 midrange ribbon?

Asked by: chien
Unfortunately only Genesis will be able to answer that. Companies often will take a driver like this and make minor changes to it for their own products and we have no way of knowing what those changes are.
Answered by: MattP
Date published: 2014-03-19

Is this an exact replacement for the Genesis 350 midrange?

I have a pair of Genesis 350se loudspeakers, with the BG48 midrange speakers. One of these has some ripples and possible damage, and I am thinking of replacing both. Is this an exact replacement, or does Genesis make some special modifications to the BG 48? Thanks
Asked by: Stan
The Bohlender Graebener RD48 Planar Transducer is not a direct equal replacement for the ribbons in your Genesis 350 speakers and even farther from a replacement if you have 350SE's.It is an excellant replacement for the Carver ribbon. When you reach this level, they all sound good, but the Genesis is flatter in actual responce and almost transparent in coloration.If you wish to exactly duplicate the performance of new then these will miss the target, however if you wish to improve the sound of ribbons that are damaged and get to an impressive sound at less than half the cost of OEM ribbons, then this would be a good choice. It really depends on your budget and drsired outcome.You should understand that if you did an A /B comparison of new Genesis 350's to a pair with replaced Bohlender Graebener RD48 Planar Transducers you will notice a difference. If you didn't have a pair to compare against, you most likely would not find a difference. It is subjective at this level.Good Luck
Answered by: Nitnub
Date published: 2014-05-01
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