Genelec 7370A PM Subwoofer

SKU: Genelec 7370A PM Subwoofer
$ 4,395.00 -10%
$ 3,950.00

Genelec 7370A PM Subwoofer

Created to deliver superb low-frequency definition, the 12 inch, 400W Class D 7370A represents the perfect blend of engineering expertise and Smart design.

At the core of the 7370A’s remarkable performance is Genelec’s Laminar Spiral Enclosure (LSE™) technology, delivering a low cut-off and pristine bass reproduction. Equally, the integration of Smart Active Monitoring (SAM™) technology delivers ultimate control; Genelec Loudspeaker Manager (GLM™) software offers fine adjustments of up to 30 individual Smart monitors and subwoofers, while AutoCal™ compensates for detrimental room influences to perfectly calibrate your set-up for your listening environment. Also supported is a distributed bass management architecture – a cost-effective solution for multi-channel audio, it offers 7.1 channel analogue XLR inputs and outputs together with stereo AES/EBU XLR inputs and outputs without the need for additional external A/D converters.

Created to serve in the most demanding applications, from recording rooms to broadcast suites and outside broadcast vehicles, the 7370A is the low frequency monitoring tool professionals trust.

Requires GLM V2.0 User Kit - Sold Separately


Key Technologies

Laminar Spiral Enclosure (LSE™) Technology

The demands placed on subwoofers over the last years have increased substantially to the point where traditional design concepts are no longer valid. For Genelec, in order to achieve the absolute best performance possible, bold initiatives must be taken.

Drawing on years of acoustic research and knowledge, Genelec's engineering group accepted the challenges placed upon them in the beginning of the 21st Century. The totally unique, curvilinear shape of the LSE™ Series Active Subwoofer enclosure is the revolutionary patented result of their efforts.

All of the Genelec LSE™ series subwoofers feature this innovative Laminar Spiral Enclosure™ (LSE™) bass reflex cabinet. It provides excellent laminar flow characteristics with minimal turbulence noise and enables an optimal packing of a very long reflex tube into a small space.

The learnings from the LSE Technology are also utilized in the reflex port design of our aluminium enclosure products.

The spiral-shaped design yields an extremely rigid enclosure exterior while also forming the subwoofer's integral port. The fact that one is part of the other means that air flow in and out of the enclosure's interior through the port is totally unrestricted. This results in an extraordinarily accurate and responsive low-frequency system with measured second and third harmonic distortion levels typically better than 30 dB below the fundamental.

When combined with Genelec stereo and multichannel bass management active electronics, the LSE™ Series Subwoofers provide a low-frequency listening experience like no other.

The result is a product range with impeccable technical performance and an LSE technology that is patent pending.

The Genelec LSE subwoofer range is unique, complete, functional, different from any other products on the market and consistent.

Bass Management System

The principle of bass management is that the bass content of the main channels and the Low Frequency Effect (LFE) channel are directed and reproduced only by loudspeakers capable of handling them, whether they are main system loudspeakers or one or more subwoofer(s).

In stereo reproduction, signals from 20 Hz to 20 kHz need to be replayed. Large multi-way monitoring systems will reproduce such a wide bandwidth evenly. With multichannel audio, professional and consumer audio systems must also be able to reproduce audio between 20 Hz and 20 kHz for each channel. To achieve this, main monitors, subwoofers and crossover electronics should work together.
A Bass Management system uses either analogue electronic circuitry or software based filtering which will filter low frequency information from the main channels and route that information to one, or more, subwoofer feed.

The dedicated LFE channel can also be monitored via that subwoofer and added to the low frequencies of the other main channels.  Therefore, the Bass Management’s basic and main goal is to ensure that the entire audio bandwidth of all channels can be accurately monitored.

Bass management benefits are:

  • The subwoofer extends the system frequency response down the lower limit of the audible range
  • Monitor can produce a higher maximum sound level when not reproducing low frequencies
  • Optimized low frequency reproduction by selecting adequate subwoofer location; monitors can also be placed more freely
  • Subwoofer’s output are aligned in level and phase with monitors allowing flat and accurate reproduction down to 19 Hz and across the crossover point
  • LFE channel output level (0 or +10 dB re. main channels) can be selected for accurate reproduction depending on the source type
  • The ability to bypass the subwoofer allows to evaluate the audible impact of the subwoofer

Optimized Amplifiers

Audio electronic crossovers allow to split the audio signal into separate frequency bands that can be separately routed to individual power amplifiers which then are connected to specific transducers optimized for a particular frequency band.

In a typical 2-way loudspeaker system, the active crossover needs two power amplifiers — one for the woofer and one for the tweeter. The power amplifiers are connected directly to the drivers of an active loudspeaker, resulting in the power amplifier’s load becoming much simpler and well known. Each driver-specific power amplifier has only a limited frequency range to amplify (the power amplifier is placed after the active crossover) and this adds to the ease of design.

The active design principle offers multiple benefits:

  • The power amplifiers are directly connected to the speaker drivers, maximizing the control exerted by the power amplifier’s damping on the driver’s voice coil, reducing the consequences of dynamic changes in the driver electrical characteristics. This may improve the transient response of the system.
  • There is a reduction in the power amplifier output requirement. With no energy lost in the passive crossover filter components, the amplifier power output requirements are reduced considerably (by up to 1/2 in some cases) without any reduction in the acoustic power output of the loudspeaker system. This can reduce costs and increase audio quality and system reliability.
  • No loss between amplifier and driver units results in maximum acoustic efficiency
  • Active technology can achieve superior sound output vs. size vs. low frequency cut-off performance
  • All loudspeakers are delivered as a factory aligned system (amplifiers, crossover electronics and enclosure-driver systems)

Intelligent Signal Sensing (ISS™) Technology

Introduced early 2013, Genelec’s Intelligent Signal-Sensing technology has been developed to meet with both European Union ErP Directives and the company’s own wider sustainability commitments.

The Intelligent Signal Sensing, ISS™ circuitry tracks the signal input of the loudspeaker and detects if it is in use. If the ISS circuit does not find any audio on the input for a period of time, it sets the loudspeaker to a low-power sleep state and the loudspeaker will consume less than 0.5 watts. When an input signal is detected, the loudspeaker immediately turns itself on. Basically, the loudspeaker system will start saving power as soon as work is interrupted.

Additionally an ‘ISS Disable’ switch is located on each product’s back plate next to the other room response controls. First, when the mains power switch of the loudspeaker is set to “ON”, the ISS™ auto-start function (low-power sleep state on/off) of the loudspeaker is active.

If this function is not desired, the ISS™ function can be disabled by setting the “ISS Disable” switch on the back panel to “ON” position. In this mode, the monitor is only powered on and off using the mains power switch.

Note that the mains power switch will always turn the monitor off completely.

Room Response Compensation

The interaction between room acoustic and loudspeaker radiation is complex. Each room changes somewhat the monitor’s response in a unique way, e.g. reflective vs. damped rooms, or placement against a wall vs. on a stand away from the walls.

All Genelec loudspeaker systems feature room response adjustments to compensate for the room influences and retrieve a flat frequency response at the listening position.

Analogue Systems

Genelec analogue loudspeaker systems provide versatile Room Response Controls. They include (depending on models):

  • Bass Roll-Off and Bass Tilt
  • Treble Tilt and Treble Roll-Off
  • Bass Level
  • Midrange Level
  • Treble Level
  • Desktop Control

At low frequencies two main controls are provided. The Bass Tilt control, which acts as a shelving filter together with the Bass Roll-off control allowing you to optimize the low and very low frequency response of the system in different installations. Bass, midrange and treble level controls are provided in large systems. These controls allow to optimize the relative balance between the various pass bands.

The operating manual and datasheet of each loudspeaker contains a list of preferred room response control settings for different installations. These have been specified out of long practical experience and measurements of various kind of typical acoustic environments.

Smart Active Monitor (SAM™) Systems

Genelec SAM Systems offer a comprehensive, solution-oriented, intelligently networked product range which all feature Genelec Loudspeaker Manager (GLM™) software and its automatic calibration system called AutoCal™.

Genelec AutoCal provides the industry’s first integrated process for complete automated measurement, analysis, and adjustment of every monitor on the GLM control network. The system measures the response in the listening area and applies relevant compensation in the low and low-mid frequencies to minimise the detrimental room acoustic anomalies as well as the differences between various listening positions. AutoCal also aligns relative levels, time-of-flight, as well as adjusts correct crossover phase (called AutoPhase) for all subwoofers on the network.

The Acoustic Response Editor provides accurate graphical display of the measured response, filter compensation and the resulting system response for each monitor, with full manual control of acoustic settings

Protection Circuitry

When working in critical audio production environments it is essential that monitoring systems remain reliable and functional at all times. One of the main reasons behind Genelec’s excellent success in broadcasting environments is the reliability of our products and a key element behind the reliability is the internal protection circuitry found in all products since 1978.

The protection circuitry prevents driver failures by detecting signal levels, and in case of sudden peaks or constantly too high levels, taking the signal level down automatically. Of course this feature does not affect the sound quality in any way when working within the specifications of the loudspeaker, but only prevents inadequate input signals from breaking the loudspeaker.

Protection circuitry features and benefits:

  • Reduces the output level when required, (e.g. when driver voice coil temperature reaches the safe limit) which highly improves the system reliability
  • Appropriate protection circuitry design in every loudspeaker and subwoofer enables to maximise system output sound level.

Active Crossovers

Audio electronic crossovers allow to split the audio signal into separate frequency bands that can be separately routed to individual power amplifiers which then are connected to specific transducers optimized for a particular frequency band.

Active crossovers come in both digital and analogue varieties. Genelec digital active crossovers include additional signal processing, such as driver protection, delay, and equalization.

Genelec analogue active crossover filters contain electronic components that are operated at low signal levels suitable for power amplifier inputs. This is in contrast to passive crossovers that operate at the high signal levels of the power amplifier's outputs, having to handle high currents and in some cases high voltages.

In a typical 2-way system the active crossover needs two power amplifiers — one for the woofer and one for the tweeter.

The active crossover design offers multiple benefits:

  • The frequency response becomes independent of any dynamic changes in the driver's electrical characteristics or the drive level.
  • There is an increased flexibility and precision to adjust and fine tune each output frequency response for the specific drivers used.
  • Each driver has its own signal processing and power amplifier. This isolates each driver from the drive signals handled by the other drivers, reducing inter-modulation distortion and overdriving problems.
  • The ability to compensate for sensitivity variations between drivers.
  • The possibility to compensate for the frequency and phase response anomalies associated with a driver’s characteristics within the intended pass-band.

The flat frequency response of a high-quality active loudspeaker is a result of the combined effect of the crossover filter response, power amplifier responses and driver responses in a loudspeaker enclosure.

Using the active approach enables frequency response adjustments and optimization of the full loudspeaker system, placed in various room environments, without expensive external equalizers. The end result is a simpler, more reliable, efficient, consistent and precise active loudspeaker system.



        • Lower cut-off frequency -6 dB: 19 Hz
        • Upper cut-off frequency -6 dB (main channel/LFE): 100 Hz/150 Hz
        • Accuracy of frequency response +/-3 dB: 19 Hz-100 Hz
        • Driver: 12 in (305 mm)
        • Harmonic distortion at 1 m on axis in half space, 30 to 85 Hz: ≤ 3% @ 90 dB SPL
        • Maximum short term sine wave SPL output, 30 to 85 Hz, at 1 meter: ≥ 113 dB SPL
        • Maximum peak SPL output, at 1 meter: ≥ 118 dB SPL
        • Self generated noise at 1 m (A-weighted): < 5 dB
        • Weight: 106 lbs (48 kg)
        • Dimensions: 24 5/8 x 21 7/8 x 19 1/2 in
        • Short term amplifier output power: 400W
        • Amplifier system THD at nominal output: < 0.01%
        • Mains voltage: 100-240 VAC 50/60 Hz
        • Power consumption: <1 W, 20 W, 400 W
        • Analog input: XLR female, balanced 10 kOhm
        • Maximum analog input signal: +25.0 dBu
        • Analog input sensitivity (100 dB SPL at 1 m) rotary level adjustment: +12 to -6 dBu
        • Digital input: XLR female 110 Ohm, AES/EBU Single Wire
        • Digital output/Thru connector: XLR male 110 Ohm, AES/EBU Single Wire
        • Digital word length: 16 - 24 bits
        • Digital sample rate: 32 - 192 kHz
        • Digital input sensitivity(100 dB SPL at 1 m ) rotary level adjustment: -30 dBFS
        • Subsonic filter (18 dB/octave) below: 19 Hz
        • Control network type: Proprietary GLM network
        • Control network connection: 2 RJ45, CAT5 cables
        • GLM software frequency response adjustment parametric notch filters: 20
        • System calibration: Genelec GLM AutoCal
        • Centralized Bass Management crossover: Subwoofer: low pass 85 Hz, output: high pass 85 Hz
        • Distributed Bass Management (GLM control only) crossover: Subwoofer: low pass 50-100 Hz, output: no filtering
        • LFE cutoff: 150 Hz
        • Midband rejection >400 Hz: ≥ 50 dB
        • Bass Roll-Off control operating range in 4 dB steps: 0 to -12 dB at 20 Hz
        • Phase matching control: 90° steps with dip switch controls, 15° steps with GLM control
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