Highline Bobby M
A SPEAKER THAT GROWS WITH YOUR NEEDS
HIGHLINE BOBBY M
The HighLine Bobby M is a sophisticated floorstanding speaker system that is created by combining the HighLine Bobby S and the HighLine Bobby Bass Extension.
This 240-watt all-passive set surprises the listener with a clarity and structure in the lower octaves that is completely unusual for its size. At the same time, it focuses on authenticity and presence in the midrange and treble.
The Bobby Bass Extension is specifically designed to perfectly extend the capabilities of the Bobby S and Bobby S Signature monitor speakers to the size and power of a floorstanding speaker.
The Bobby Bass Extension is a passive box with an integrated crossover that is perfectly matched to the Bobby S horn speakers. It has just the right height to serve as a stand for the Bobby S horn speakers.
Just like the Bobby S, the body of the Bass Extension is trapezoidal and tapers from the back to the front.
Power
SPL: 89 dB
Impedance: 4 Ohm
Crossover Frequencies: 80 Hz, electrically 18 dB; 2400 Hz, electrically 6/12 dB
Together with the mechanical filters this gives a very uniform phase and frequency range.
Frequency range: 34 Hz – 24800 Hz
design
Material: Wood
Colors: The colors of the housing and horn can be chosen individually
Weight: 30 kg (per piece)
Dimensions: height 1015mm, width front 230mm, width rear 280mm, depth 290mm
HIGHLINE BOBBY HORN LOUDSPEAKERS: A MODULAR SYSTEM
As already mentioned, the Bobby Bass Extension is a passive speaker with integrated crossover to adjust the bass range of the Bobby S. If you put the Bobby S on the Bobby Bass Extension, a compact horn speaker becomes a veritable floorstanding speaker, which we call Bobby M.
The Bobby M combination can penetrate up to 34 Hz deep into the bass range and thereby sound even larger rooms subtly. But there’s more: If you put another bass extension on top of the Bobby M, you have the mighty Bobby L.
So you are now spoiled by 5 bass speakers per side. Even in the lowest range, the Bobby L will still be able to reproduce every instrument and every voice in great detail.
Also in the Bobby M and L version, the Hi-Fi boxes with their noble design have a positive effect on any room. As floorstanding speakers, the Bobby M horn speakers are far more eye-catching than the Bobby S. As the Bobby L, they can dominate a room visually as much as they do acoustically.
The trapezoidal body tapers from back to front to a mere 23 centimeters. With subtly rounded corners and the prominent tweeter horn, this high-end speaker is a feast for the eyes of the hi-fi enthusiast.
As far as the color scheme is concerned, the customer’s wishes are decisive. Thus, the box can also be adapted to the future environment in terms of color.
Reviews
Julie Mullins – The Absolute Sound
“it is special, indeed, offering beautifully pure and natural, airy sound in a unique and versatile modular package”
“As a horn speaker, the HighLine “Bobby” M captivates the listener with its reproduction of voices and solo instruments. As before, the “Bobby” M with its sound selector switches offers the possibility to make an adjustment to the listening room or one’s own taste, the differences are now, in the three-way version, even more pronounced.”
Driver
— FINELY SELECTED AND MODIFIED
As bass speakers we use 2 pieces of the same 6” speaker with a carbon coated natural fiber cone, and extremely little mechanical losses as in the Bobby S. By this we ensure to get a sonic characteristics which perfectly fits to the Bobby S. The diaphragms of the bass is also treated with SteinMusic Maestro lacquer.
This treatment gives a very natural sonic signature, which is equal all over the entire frequency range that the Bobby M or L is able to reproduce. We source those drivers from one of the best manufacturers, and besides the cone treatments we further modify and optimize them in many aspects to reduce mechanical losses and get an open sound with lots of detail and no colorations.
The bass speakers in detail
– Vented cast aluminum chassis for optimum strength and low compression
– Proprietary cone material with natural fibers
– Soft low damping rubber surround for transient response
– Non-conducting fiber glass voice coil former for minimum damping
– Extended copper sleeve on pole piece for low inductance and low distortion
– CCAW voice coil for reduced moving mass
– Long life silver lead wires
– Vented pole piece for reduced compression
The tweeter in detail
– Copper cap for reduced voice coil inductance and minimum phase shift
– Non-reflective rear chamber with optimized damping for improved dynamics
– Flow optimized vented pole piece for optimum coupling to rear chamber
– Fine weave soft fabric dome for smooth frequency response
– Saturation controlled motor system for low distortion
– CCAW voice coil for low moving mass
– Long life silver lead wires
– Low resonance frequency
Wiring
The internal wiring is made of the finest solid core copper conductors. The diameter for the bass is 1mm, for the tweeter we use exactly the same style of conductors but decreased the diameter to 0,5mm. The result is a better resolution of the higher frequencies, maintaining a coherent overall reproduction. All cables we use in our horn loudspeakers are produced on our own braiding machines in order to constantly achieve the best result.
Crossover
— HANDMADE AND DEVELOPED INHOUSE
Before designing a crossover, we have carefully matched and adjusted the drivers so that we can achieve the best results with a simple configuration here, which ensures that no details of the music are lost in this area of the speaker.
Each component of the crossover was selected after extensive listening tests. The most critical capacitor for the tweeter is an oil-impregnated film capacitor. We chose our favorite capacitor in terms of sound from the Mundorf range. We receive these as raw windings and process them in our factory according to our ideas and experience to produce a capacitor with a unique, fine, expressive sound without discoloration. The coil in the bass section consists of individually insulated strands, and as resistors we use exclusively our preferred film resistors from Beyschlag.
In addition to the classic components used in a crossover, we also work here with our self-developed InLine Matrix components to avoid magnetic distortion.
Cabinet
— MANUFACTURED IN OUR WORKSHOP
Cabinet Bobby S
The cabinet is a ventilated cabinet with short tubes in the front behind the high frequency horn. It is wider at the back than at the front in a precisely defined ratio, which we have empirically found to be the best solution. An important aspect of this construction is that there are no standing waves between the side walls. Secondly, in combination with the 40mm thick rear panel, it gives the cabinets enormous stability against unwanted resonances. This allows us to work without any internal damping material, which not only absorbs unwanted resonances, but also takes energy out of the music. The Bobby S are equipped with solid walnut feet for a transparent but organic sound.
Cabinet Bobby Bass Extension
The housing is a vented box. The bass reflex tunnels are located close to the bottom, and we have chosen a contour that changes its diameter slowly over the length. Be this we get a much better contour of the bass. The housing is wider in the back than in the front in an exactly defined ratio that we empirically found out to be the best solution here. One important aspect of this construction is that we will not have standing waves between the sidewalls, which in addition are stiffened with a bar. This gives the housings an enormous stability against unwanted housing resonances. This allows us to work completely without any internal dampening material, which does not only absorb unwanted resonances but also always sucks out energy from the music. Also the Bobby Bass Extension are equipped with solid walnut feet for a transparent but organic sound.
Terminals
There are two toggle switches on the connection plate of the Highline Bobby S horn speakers. These can be used to adjust the character and volume of the high frequencies, depending on the positioning, characteristics of the listening room and personal preferences. No additional switches are necessary with the Bobby Bass Extensions.
If the Bass Extension and the Bobby S are combined into a Bobby M or a Bobby L, they are automatically included in the adjustments. However, depending on the positioning and characteristics of the listening room and personal preferences, you can use the supplied acoustic foam parts in one or both bass reflex channels for adjustment.
Components
Each component of the crossover is of the best quality and was chosen after extensive listening tests. The most critical capacitor for the tweeter is an oil-impregnated film capacitor.
We have opted for our favourite Mundorf capacitor in terms of sound. We receive these as raw windings and process them in our company according to our ideas and experience to a capacitor with a unique, fine, expressive sound without discolouration. The coil in the bass range consists of individually insulated strands, and we use only our preferred Beyschlag film resistors as resistors. In addition to the classic components used in a crossover, we also use our proprietary InLine Matrix components to avoid magnetic distortions.
Specials
All drivers, crossover components, terminals and cables are processed with a special in house developed technology reduce material stress, and so increase the conductivity for complex signals. In addition, we do use our unique quantum physical approach that you also find in our E-Pads. Bobby S and Bobby Bass Extensions are equipped with solid walnut feet for a transparent but organic sound. In addition the Bobby Bass Extensions have receptions for these feet from the Bobby S in their top, and the contact surface is massive mahogany.