Divin Majestic Specs and design criteria

Elliot G.

Industry Expert
Jul 22, 2010
3,286
2,958
1,360
Fort Lauderdale, Florida
www.bendingwaveusa.com
Hi Elliot,

In the following you will find a list of the specialities, thoughts, solutions and explanations for the Divin Majestic loudspeaker, as well as the technical specifications:


The chassis:
All chassis of the Divin Majestic are extremely special. We had to totally developed the 8 inch and 18 inch chassis from the ground up, as there were no existing chassis on the market which met our requirements.
The tasks for the 8 inch and 18 inch chassis were:
- The basket should be very strong, rigid and non resonating and simultaneously extremely ventilated in order to produce less possible air resistance.
- The mechanical and electrical loss factors should be as less as possible. Hereby all micro details of the music signal are getting unveiled and you reach a max. fast transient response. For example the loss factor Rms of our 18 inch chassis is only 2.2 ! In order to reach this outstanding value we had to design a special surround and dampening material, a special spider and moving parts, an extremely vented design, glas fiber voice coil bobbin with special adaption to the membrane, …
- The ideal heat management. The chassis parameters always shifts massively when the voice coil gets warmer. Therefore we use big voice coil diameters. For the 8 inch midrange with 65 mm diameter and for the 18 inch with 90 mm diameter. Additionally we use inside/outside windings in order to double the heat dissipating surface. Also the complete motor parts are massively ventilated. Hereby the TS parameters are staying extremely stable and the music stays perfectly uncolored and time aligned, no matter at what volume you are listening to the music.
- Extremely light weight moving masses in order to reach an optimum impulse and transient response. The moving mass incl. air load for the 18 inch is only 111g! And for the 8 inch only 17g! And that very light weight Mms with a linear Xmax peak to peak of 16 mm for the 18 inch and 7 mm for the 8 inch. That is an outstanding light weight Mms and the results are a perfect impulse response, extreme attack, best possible time response and control.
- Reduction of the distortion. Amongst others we solved this with the usage of several shortening rings in the motors of the chassis, as well as special neodymium magnet motor alignments. Hereby the distortions are getting massively reduced. Additionally the impedance stays very flat also to the higher frequencies, so the crossover could perfectly work.
- A very even frequency response in the used frequency area and a perfect resonance behavior and control above the used frequency area. We achieved this by using a very light weight and stable membrane material mixture out of non pressed paper with carbon fibers and glass fibers. Additionally we applied a multi-stage treatment on the membranes and surrounds, which especially works above the used frequency area in order to perfectly control their resonance, phase and dispersion behavior. This treatment of the membranes and surrounds is based on our bending wave technology out of our Carbon Excellence bending wave drivers. Hereby we were able to bring the phase/time and dispersion behavior and the max. linear frequency response to perfection.
- also the tweeter gets a multi-stage treatment, especially of the rear closed chamber in order to bring the resonance-, frequency- and phase behavior to perfection.


The cabinet and crossover:
1.) In total there are 3 separate cabinets per channel: 1 cabinet housing the 18 inch chassis at the top, followed by another cabinet containing the 8 inch midrange, the tweeter and the crossovers, plus another cabinet housing another 18 inch bass chassis at the bottom.
2.) Through the constraint layer dampening enclosure construction with tropical room proof resin bounded material together with the massive aluminum baffles, we accomplished a cabinet which is rock solid and max. quiet.
3.) Additionally we are using kinetic mass dampening devises on special locations behind the midrange cabinets in order to bring the resonance behavior to perfection.
4.) For the proprietary Göbel 8 inch midrange drivers we use a closed chamber design in order to reach the maximum speed and best time behavior.
5.) All internal walls of the internal enclosures (for the bass, for the midrange, for the tweeter) are not parallel. Hereby we totally avoid standing waves in the enclosures from the outset, which would result in the time and frequency behavior problems.
6.) For the internal damping of the closed midrange enclosures, we use a special combination of different damping materials (ceramic foams, different kind of fibers and compressing), in order reach a broad and constant damping behavior over the whole frequency range, but also to avoid energy saving effects which would result in time and phase problems.
7.) For the bass enclosures we designed a special bass reflex alignment with internal Helmholz resonators. Additionally the internal Helmholz resonators are coupled to the internal volume by ceramic foam layers. Hereby we were able to cancel the internal standing waves inside the enclosure and also minimizing the usage of damping materials. Through this we are avoiding energy saving effects and bringing the time, phase and frequency behavior to perfection.
8.) Additionally for the bass enclosure we are using a special symmetrical bass reflex enclosure alignment in order to bring the distortion behavior to perfection. Through this symmetrical arrangement, the bass chassis are seeing a symmetrical load in the back. Hereby the membranes doesn’t wobble even if the excursions are getting bigger. This unsymmetrical wobbling of the membranes are a big reason for rising distortions, as the voice coil hereby is also forced to wobble in the magnet field. We are totally minimizing this effect because of our symmetrical bass reflex alignment.
9.) The midrange and tweeter chassis are mounted in an up to 70mm thick aluminum front baffle. This front baffle with the chassis is then mounted to the 40mm constrain layer dampening enclosure. Hereby the units are perfectly decouple from the rest of the enclosure. In comparison thereto, the 18 inch bass chassis are directly mounted into the enclosure in order to directly couple them. Hereby we were able to bring the impulse and resonance behavior to perfection.
10.) Additionally this bass, midrange and tweeter chassis are mounted in a specific symmetrical array, with specific angulars, offsets and baffle dimensions. Hereby we were able to bring the time and phase behavior to perfection. Amongst others, through this the music can be reproduced in its real size and scale. Additionally the overall dispersion is linearized through this symmetrical arrangement. Also the dimensions and chamfers of the front baffles are playing a big part to bring the phase- and time behavior as well as the frequency and overall dispersion to perfection. Last but not least the reflections on the edges are hereby also eliminated.
11.) The dispersion of the tweeter is guided through a waveguide, which is milled out of full aluminum with a specific curve progression. Hereby we were able to bring the overall dispersion to perfection and to seamlessly adapt the tweeter to the 8 inch midrange chassis.
12.) All the internal wiring is based on our Lacorde Statement Speaker cables.
13.) For the crossovers we are only using the best parts available such as Duelund Cast capacitors and resistors, Mundorf Silver/Gold/Oil capacitors, foil inductors, air core inductors and a special gigantic inductor in the signal path of the 18 inch woofers for lowest possible resistance and distortions. All crossover parts and especially the gigantic inductor in front of the 18 inch woofers additionally are getting a multi-stage treatment with different epoxy resins in vacuum, in order to stay stable and maximum distortion free even when played at highest possible levels.
14.) The crossovers are located in a separate location of the middle cabinet. They are completely sealed inside the enclosure in ordert to exclude any air pressure inducted distortions.
15.) Additionally each crossover way (tweeter, midrange, bass) is housed in a separate box, sealed with an epoxy resin and mounted over silent blocks to the enclosure. Hereby we are avoiding any electrical and magnetic coupling, as well as any mechanical interferences between them and the enclosure.
16.) Last but not least, the stainless steel feet are especially designed and produced in order to minimize the contact area and therefore perfectly couple the enclosure to the ground. The whole construction is resting on big Siliciumnitrid ceramic balls of highest quality. So the contact area is really as minimal as it can be.


The technical specifications:

Principle: 3-Way, high sensitivity, symmetrical bass reflex loudspeaker
Driver: 2 pcs. Göbel® High End proprietary longthrow Bass chassis (18 inch), 2 pcs. Göbel® High End proprietary midrange chassis (8 inch), multi stage modified Mundorf AMT with Aluminum Wave Guide
Housing: Acoustically optimized, constraint layer dampening, resin bounded composite board with massive aluminum acoustic baffles of max. 110 mm thickness (max. 70mm aluminum + 40mm composite board)
Standard finish: Real piano lacquer black, aluminum parts in black ultra matt soft touch with silver colored high lights. Any finish possible on customer request!
Sensitivity: 98 dB / 1W / 1m
Frequency response: 21 - 24.000 Hz (-3dB)
Impedance: 6 Ohm
Impedance minimum: 3,3 Ohm at 100 Hz
Dimensions: 226 cm (H) x 79 cm (W) x 114 cm (D)
Weight: 530 kg without packaging
Packaging: 3 professional flight cases for each loudspeaker
 

Elliot G.

Industry Expert
Jul 22, 2010
3,286
2,958
1,360
Fort Lauderdale, Florida
www.bendingwaveusa.com
Hi Elliot,

In the following you will find a list of the specialities, thoughts, solutions and explanations for the Divin Majestic loudspeaker, as well as the technical specifications:


The chassis:
All chassis of the Divin Majestic are extremely special. We had to totally developed the 8 inch and 18 inch chassis from the ground up, as there were no existing chassis on the market which met our requirements.
The tasks for the 8 inch and 18 inch chassis were:
- The basket should be very strong, rigid and non resonating and simultaneously extremely ventilated in order to produce less possible air resistance.
- The mechanical and electrical loss factors should be as less as possible. Hereby all micro details of the music signal are getting unveiled and you reach a max. fast transient response. For example the loss factor Rms of our 18 inch chassis is only 2.2 ! In order to reach this outstanding value we had to design a special surround and dampening material, a special spider and moving parts, an extremely vented design, glas fiber voice coil bobbin with special adaption to the membrane, …
- The ideal heat management. The chassis parameters always shifts massively when the voice coil gets warmer. Therefore we use big voice coil diameters. For the 8 inch midrange with 65 mm diameter and for the 18 inch with 90 mm diameter. Additionally we use inside/outside windings in order to double the heat dissipating surface. Also the complete motor parts are massively ventilated. Hereby the TS parameters are staying extremely stable and the music stays perfectly uncolored and time aligned, no matter at what volume you are listening to the music.
- Extremely light weight moving masses in order to reach an optimum impulse and transient response. The moving mass incl. air load for the 18 inch is only 111g! And for the 8 inch only 17g! And that very light weight Mms with a linear Xmax peak to peak of 16 mm for the 18 inch and 7 mm for the 8 inch. That is an outstanding light weight Mms and the results are a perfect impulse response, extreme attack, best possible time response and control.
- Reduction of the distortion. Amongst others we solved this with the usage of several shortening rings in the motors of the chassis, as well as special neodymium magnet motor alignments. Hereby the distortions are getting massively reduced. Additionally the impedance stays very flat also to the higher frequencies, so the crossover could perfectly work.
- A very even frequency response in the used frequency area and a perfect resonance behavior and control above the used frequency area. We achieved this by using a very light weight and stable membrane material mixture out of non pressed paper with carbon fibers and glass fibers. Additionally we applied a multi-stage treatment on the membranes and surrounds, which especially works above the used frequency area in order to perfectly control their resonance, phase and dispersion behavior. This treatment of the membranes and surrounds is based on our bending wave technology out of our Carbon Excellence bending wave drivers. Hereby we were able to bring the phase/time and dispersion behavior and the max. linear frequency response to perfection.
- also the tweeter gets a multi-stage treatment, especially of the rear closed chamber in order to bring the resonance-, frequency- and phase behavior to perfection.


The cabinet and crossover:
1.) In total there are 3 separate cabinets per channel: 1 cabinet housing the 18 inch chassis at the top, followed by another cabinet containing the 8 inch midrange, the tweeter and the crossovers, plus another cabinet housing another 18 inch bass chassis at the bottom.
2.) Through the constraint layer dampening enclosure construction with tropical room proof resin bounded material together with the massive aluminum baffles, we accomplished a cabinet which is rock solid and max. quiet.
3.) Additionally we are using kinetic mass dampening devises on special locations behind the midrange cabinets in order to bring the resonance behavior to perfection.
4.) For the proprietary Göbel 8 inch midrange drivers we use a closed chamber design in order to reach the maximum speed and best time behavior.
5.) All internal walls of the internal enclosures (for the bass, for the midrange, for the tweeter) are not parallel. Hereby we totally avoid standing waves in the enclosures from the outset, which would result in the time and frequency behavior problems.
6.) For the internal damping of the closed midrange enclosures, we use a special combination of different damping materials (ceramic foams, different kind of fibers and compressing), in order reach a broad and constant damping behavior over the whole frequency range, but also to avoid energy saving effects which would result in time and phase problems.
7.) For the bass enclosures we designed a special bass reflex alignment with internal Helmholz resonators. Additionally the internal Helmholz resonators are coupled to the internal volume by ceramic foam layers. Hereby we were able to cancel the internal standing waves inside the enclosure and also minimizing the usage of damping materials. Through this we are avoiding energy saving effects and bringing the time, phase and frequency behavior to perfection.
8.) Additionally for the bass enclosure we are using a special symmetrical bass reflex enclosure alignment in order to bring the distortion behavior to perfection. Through this symmetrical arrangement, the bass chassis are seeing a symmetrical load in the back. Hereby the membranes doesn’t wobble even if the excursions are getting bigger. This unsymmetrical wobbling of the membranes are a big reason for rising distortions, as the voice coil hereby is also forced to wobble in the magnet field. We are totally minimizing this effect because of our symmetrical bass reflex alignment.
9.) The midrange and tweeter chassis are mounted in an up to 70mm thick aluminum front baffle. This front baffle with the chassis is then mounted to the 40mm constrain layer dampening enclosure. Hereby the units are perfectly decouple from the rest of the enclosure. In comparison thereto, the 18 inch bass chassis are directly mounted into the enclosure in order to directly couple them. Hereby we were able to bring the impulse and resonance behavior to perfection.
10.) Additionally this bass, midrange and tweeter chassis are mounted in a specific symmetrical array, with specific angulars, offsets and baffle dimensions. Hereby we were able to bring the time and phase behavior to perfection. Amongst others, through this the music can be reproduced in its real size and scale. Additionally the overall dispersion is linearized through this symmetrical arrangement. Also the dimensions and chamfers of the front baffles are playing a big part to bring the phase- and time behavior as well as the frequency and overall dispersion to perfection. Last but not least the reflections on the edges are hereby also eliminated.
11.) The dispersion of the tweeter is guided through a waveguide, which is milled out of full aluminum with a specific curve progression. Hereby we were able to bring the overall dispersion to perfection and to seamlessly adapt the tweeter to the 8 inch midrange chassis.
12.) All the internal wiring is based on our Lacorde Statement Speaker cables.
13.) For the crossovers we are only using the best parts available such as Duelund Cast capacitors and resistors, Mundorf Silver/Gold/Oil capacitors, foil inductors, air core inductors and a special gigantic inductor in the signal path of the 18 inch woofers for lowest possible resistance and distortions. All crossover parts and especially the gigantic inductor in front of the 18 inch woofers additionally are getting a multi-stage treatment with different epoxy resins in vacuum, in order to stay stable and maximum distortion free even when played at highest possible levels.
14.) The crossovers are located in a separate location of the middle cabinet. They are completely sealed inside the enclosure in ordert to exclude any air pressure inducted distortions.
15.) Additionally each crossover way (tweeter, midrange, bass) is housed in a separate box, sealed with an epoxy resin and mounted over silent blocks to the enclosure. Hereby we are avoiding any electrical and magnetic coupling, as well as any mechanical interferences between them and the enclosure.
16.) Last but not least, the stainless steel feet are especially designed and produced in order to minimize the contact area and therefore perfectly couple the enclosure to the ground. The whole construction is resting on big Siliciumnitrid ceramic balls of highest quality. So the contact area is really as minimal as it can be.


The technical specifications:

Principle: 3-Way, high sensitivity, symmetrical bass reflex loudspeaker
Driver: 2 pcs. Göbel® High End proprietary longthrow Bass chassis (18 inch), 2 pcs. Göbel® High End proprietary midrange chassis (8 inch), multi stage modified Mundorf AMT with Aluminum Wave Guide
Housing: Acoustically optimized, constraint layer dampening, resin bounded composite board with massive aluminum acoustic baffles of max. 110 mm thickness (max. 70mm aluminum + 40mm composite board)
Standard finish: Real piano lacquer black, aluminum parts in black ultra matt soft touch with silver colored high lights. Any finish possible on customer request!
Sensitivity: 98 dB / 1W / 1m
Frequency response: 21 - 24.000 Hz (-3dB)
Impedance: 6 Ohm
Impedance minimum: 3,3 Ohm at 100 Hz
Dimensions: 226 cm (H) x 79 cm (W) x 114 cm (D)
Weight: 530 kg without packaging
Packaging: 3 professional flight cases for each loudspeaker

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