Master of Sound

The MOS system, Master of Sound

Behind the creation of an extraordinary product there are many ideas, emotions and choices, and there is passion. The final result of all this elements is MOS, the new high end speaker line, designed to celebrate the 25th anniversary of Macrom, with the aim to be the best speaker ever designed in our labs.

The MOS line in addition to the superb sound performance stands out for its ease of fit and the high configurability of the system. MOS 2 ways systems are available in two variants with 6 "or 5" woofers and a further variant represented by the choice between a traditional woofer or a kick-panel variant. This way they can be met various requirements of installation of a "no compromise" system. The components of the MOS series are not sold as a kit, so is possible to buy the necessary components without duplication of costs.

MOS standard system

As all Macrom products also MOS have been developed on the principle that to listen music in your car there is no need to radically and irreversibly change it's interiors. MOS is a 2 way system easy to fit and to calibrate due to a crossover that allows you to adjust the output level of the tweeter to 5 positions and if necessary use a notch filter made from a equalizing cell centered at 5 kHz. Dedicated to installation into the doors MOS woofers are characterized by a regular and extended response in the midrange and large emission angle. The MOS tweeter depth is extremely reduced (15mm) to extend at the maximum the choice of positions for the installation. The system consists of a tweeter, which combine with a woofer, 5 "or 6" size and the crossover MOS.X2P.

MOS Kick Panel system

The kick panel variant use a dedicated crossover and is designed for fitting woofers near wheel level of front dashboard. This smart solution allows the creation of a front soundstage well located and enjoyable by both front passengers. It is proposed with the same tweeter as the standard series, two variants of woofer 5" and 6" size and a specific crossover MOS.X2K.

Silk dome tweeter with neodynium magnet

Description:

26 mm silk dome tweeter in aluminium housing without Ferrofluid with acoustic volume for a very low crossover point and therefore a brilliant wide and spacious front staging
Dome hand-coated with sound coating to improve frequency response.
High temperature neodymium magnet for stable SPL also at highest volume and temperature.
Special venting system inside the tweeter for voice coil cooling and balanced chamber pressure.

Technical specifications:

DC Resistance Rdc [ohm] 3.6
Impedance ZN [ohm] 4
Resonance Frequency fs [Hz] 900
SPL [dB 1W / 1m] 89
Frequency Response [Hz] 900 to 25.000
Nominal Power Handing [Watt] 5 without crossover.
Peak Power Handling [Watt] 150 with crossover only.
Recommended Crossover Frequency [Hz] 2.700 @ 12 dB / Octave
Dome Material: Silk
Voice Coil Cooling: Vented volume
Magnet Material: N35H Neodymium

5" woofer for mid bass

Description:

Aluminium die-cast basket with high stiffness for rattle free operation.
Aluminium compound cone on a polymer cellulose base for authentic sound reproduction.
Machined aluminium phase plug for phase correction around the crossover frequencies and additional cooling for magnet motor.
High temperature 32 mm voice coil former for minimal current loss and maximum excursion.
Woven-in lead wires for rattle free operation.
Copper cap on Yoke for impedance linearization and lowering harmonic distortions.
Stainless steel screw terminal for long-term rust free operation.
Triple vented magnet system.

Technical specifications:

DC Resistance Rdc [ in ohm] 3,6
Impedance ZN [in ohm] 4,7 @ 1kHz
Resonance Frequency fs [in Hz] 60
Mechanical Qualtiy Factor Qms 4,32
Electrical Quality Factor Qes 0,61
Total Quality Factor Qts 0,53
Equivalent Volume Vas [in dm 3 ] 7,41
SPL SPL [dB 1W/1m] 88
Peak Power Rating Pmax [in W] 160
Nominal Power Rating P [in W] 85
Frequency Response [in Hz] 60 ﾐ 8.000

5" woofer for mid bass kick panel

Description:

Aluminium die-cast basket with high stiffness for rattle free operation.
Aluminium compound cone on a polymer cellulose base for authentic sound reproduction.
Special design dust cap for better frequency response.
High temperature 32 mm voice coil former for minimal current loss and maximum excursion.
Woven-in lead wires for rattle free operation.
Copper cap on Yoke for impedance linearization and lowering harmonic distortions.
Stainless steel screw terminal for long-term rust free operation.
Triple vented magnet system

Technical Specifications:

DC Resistance Rdc [in ] 3,6
Impedance ZN [in ] 5,0 @ 1kHz
Resonance Frequency fs [in Hz] 55
Mechanical Qualtiy Factor Qms 4,13
Electrical Quality Factor Qes 0,59
Total Quality Factor Qts 0,51
Equivalent Volume Vas [in dm 3 ] 7,70
SPL SPL [dB 1W/1m] 87
Peak Power Rating Pmax [in W] 160
Nominal Power Rating P [in W] 85
Frequency Response [in Hz] 55 ﾐ 8.000

6" woofer for mid bass

Description:

Aluminium die-cast basket with high stiffness for rattle free operation.
Aluminium compound cone on a polymer cellulose base for authentic sound reproduction.
Machined aluminium phase plug for phase correction around the crossover frequencies and additional cooling for magnet motor.
High temperature 32 mm voice coil former for minimal current loss and maximum excursion.
Woven-in lead wires for rattle free operation.
Copper cap on Yoke for impedance linearization and lowering harmonic distortions.
Stainless steel screw terminal for long-term rust free operation.
Triple vented magnet system

Technicals specifications::

DC Resistance Rdc [in ohm] 3,6
Impedance ZN [in ohm] 5,3 @ 1kHz
Resonance Frequency fs [in Hz] 55
Mechanical Qualtiy Factor Qms 3,52
Electrical Quality Factor Qes 0,49
Total Quality Factor Qts 0,43
Equivalent Volume Vas [in dm 3 ] 12,90
SPL SPL [dB 1W/1m] 89
Peak Power Rating Pmax [in W] 200
Nominal Power Rating P [in W] 100
Frequency Response [in Hz] 55 ﾐ 8.000

6" woofer for mid bass kick panel

Description:

Aluminium die-cast basket with high stiffness for rattle free operation.
Aluminium compound cone on a polymer cellulose base for authentic sound reproduction.
Special design dust cap for better frequency response.
High temperature 38.5 mm voice coil former for minimal current loss and maximum excursion.
Woven-in lead wires for rattle free operation.
Copper cap on Yoke for impedance linearization and lowering harmonic distortions.
Stainless steel screw terminal for long-term rust free operation.
Triple vented magnet system

Technical specifications:

DC Resistance Rdc [in ohm] 3,6
Impedance ZN [in ohm ] 5,4 @ 1kHz
Resonance Frequency fs [in Hz] 50
Mechanical Qualtiy Factor Qms 3,50
Electrical Quality Factor Qes 0,50
Total Quality Factor Qts 0,44
Equivalent Volume Vas [in dm 3 ] 12,60
SPL SPL [dB 1W/1m] 88
Peak Power Rating Pmax [in W] 200
Nominal Power Rating P [in W] 100
Frequency Response [in Hz] 50 ﾐ 8.000

2 ways crossover for MOS system

MOS.X2P

2 way crossover for MOS with phase plug series (MOS.6 - MOS.5)

MOS.X2K

2 way crossover for MOS Kick series (MOS.6K - MOS.5K)

Technical specification and manual (PDF)

Extensive crossover with large and low resistance air coils for dynamic and fast mid-bass as well as foil capacitors for the trebles.
Low noise MOX resistors with low inductance.
Various possibilities for individual adjustments of tweeter level as well as crossover point for woofer.
Audiophile listeners have the possibility to disable the halogen bulb tweeter protection.
Four pin input for large cable diameters (8 mm²) or additional crossover (Kick-Bass) connection.
Peak power handling up to 180 Watt.
Required minimum power 50 Watt RMS, recommended 75 Watt RMS or more.