Are there any advantages if I use SAM Systems with an analogue mixing console?
In the case of SAM Systems, GLM AutoCal, the GLM control network and its user interface work with both analogue and AES/EBU digital input signals.
Can I connect SAM Systems to an Ethernet network and control them from another room?
No, do not connect the control network to an Ethernet signal. Even if SAM control network uses CAT cabling the data in the cables is not Ethernet data.
Can I install the GLM software on another computer?
The GLM Loudspeaker Manager Package comes with a site license. You are free to install GLM to as many computers as you need.
Can I mix Classic 8000 Series monitors with SAM Systems?
No with SAM Monitors. If the analogue input sensitivity of Classic 8000 Series and SAM Series monitors are the same, Genelec SAM Monitors exhibit a slightly larger latency (< 5 ms) than 8000 Series monitors. Therefore Classic 8000 Series and SAM Series monitors should not be mixed in a stereo pair or multichannel setup.
Yes with SAM Subwoofers. Any Classic 8000 Series monitors can be used with SAM Subwoofers, in any stereo or multichannel setup.
Can I upgrade my SAM monitor or subwoofer?
No. It is not feasible to upgrade old products. The main reason is the differences in internal mechanics and component designs.
Can I use a 7000 Series subwoofer with SAM monitors?
Yes, when an analogue signal source is used. The analogue signal first goes to the 7000A Series subwoofer and then onwards to the analogue inputs of the SAM monitors.
Can I use any microphone and pre-amplifier with SAM Systems?
The 8300A Calibration Microphone works with the GLM Network Interface. The microphone has been calibrated during manufactured by Genelec, and the data used by AutoCal to compensate for the microphone off-axis response. No other microphone will work accurately in this system, which is why the 8300A Calibration Microphone is included in the GLM User Kit Package.
Can I use S/P-DIF instead of AES/EBU digital audio?
The SAM Systems digital inputs have be designed for AES/EBU signals. S/P-DIF and AES 3-id signals may be used but the cable length from the audio source to the monitor must be short, preferably less than 2 meters, and the use of an impedance converter is recommended. The impedance converter allows the 75-ohm S/P-DIF source to work properly with a 110-ohm AES/EBU receiver.
Can I use SAM Subwoofers with Classic 8000 Series monitors?
The Classic 8000 Series monitors have an analogue input. The 7200 Series SAM subwoofers have AES/EBU digital outputs only. However, other 7300 Series SAM subwoofers have analogue inputs and outputs and can be used also with analogue monitors.
Can I use standard CAT5, CAT5e, or CAT6 Ethernet cable with SAM products?
Yes. The GLM network uses standard Ethernet cables to connect together all the loudspeakers and subwoofers on the network. The data rate used in the GLM Control network is low by Ethernet standards and is therefore an easy signal to transmit reliably.
Can I use the GLM 1.0 Network Interface Device and software with 8300 and 7300 Series SAM products?
No. All latest SAM products must be used together with the GLM 2.0 User Kit and this includes the 8300 Network Adapter and the 8300A measurement microphone.
Do I need all cables sent with SAM systems connected at all times?
No. The only cables that must be connected are the signal cables and mains power cables.
The USB cable, GLM Network Interface and the network cables only needs to be connected if the monitoring system is being run in Network Control mode with the GLM
The Genelec Calibration Microphone and measurement signal cable only needs to be connected when GLM AutoCal is being run.
Do SAM Systems sound the same as the Analogue products?
The differences are in the steepness of the crossover filters and the slightly tighter on-axis response. When using the GLM control network and AutoCal, the monitor can be integrated into the room with greater precision and the differences may be significant.
How do I connect a 7200 Series SAM subwoofer to an analogue source?
The way to connect an analogue source to a 7200 SAM subwoofer is to use an eight-channel analogue-to-digital AES/EBU (AD) converter.
How do I make settings for different positions in the room and switch between them?
AutoCal can be performed for different locations in the room, for example engineer’s position and producer’s position, and the settings stored in individual System Setup files which may be instantaneously recalled.
GLM 2.0 also contains the monitor group definitions. In one System Setup File you can now define and calibrate several listening positions, calibrations, and input types as groups.
How to upgrade the GLM software?
Software updates and upgrades will be clearly announced on the Genelec web site.
I am used to a high level of bass in the monitoring so can I have it?
The goal of a monitoring system is to faithfully convert the electrical signal presented to its inputs to sound pressure at the listening position. It should add nothing to the sound nor take anything away. AutoCal equalizes the response of the system to be as flat as possible thereby trying to get as close to the goal as possible.
If your target response is not the flat magnitude response, the acoustical settings in the GLM setup can be adjusted as required. You can always do this manually.
Is network termination required on the control network?
Termination is recommended if the total control network length is longer than 100 meters (330 ft). Termination is done by running a CAT5/CAT6 cable from the last vacant GLM control network connector back to the termination connector (labelled 'Terminator') on the GLM 2.0 Network Adapter device.
If a termination is not done for very long cables, some of the products may not appear on the network or receive all commands. If this happens, use a termination.
If the total network cabling exceeds 300 m (1000 ft), please contact your local Genelec distributor to find a specific network and termination solution.
Is there any software that conflicts with the GLM software?
Extensive testing has been done to ensure the GLM software does not conflict with any other software.
My SAM system is not working, what should I do?
There are a number of ways you can try to get your system working again:
- Read the System Operating Manual or the contact-sensitive help in the GLM software
- Read more of these FAQ’s
- Contact the DSP Product Specialist at your distributor
If there is a bug in the software, please report it so it can be replicated.
What about the phase shift from the filters?
Well-treated listening rooms and good quality monitors can be considered to be minimum-phase systems (small energy storage due to resonances). In a minimum-phase system the magnitude response and phase response are linked. Any change in the magnitude response affects the phase response and vice versa. Generally, the object of equalization is to flatten the magnitude response. This has the side-effect of improving the linearity of the phase response. Listening rooms introduce phase shifts and corresponding changes to the magnitude response, so the filters used to equalize a monitor in a room can improve the total system phase response.
What are the advantages of SAM Systems compared with Analogue ones?
If digital outputs are available at the source, the signal remains in the digital domain until after all the processing in the subwoofer or monitor is complete. The signal is finally converted to analogue just before the power amplifiers. This ensures that the best gain staging is used to maximize the signal-to-noise ratio, dynamic range and overall filter quality in the signal processing.
- AutoCal ensures that the Acoustical Settings in the monitors and subwoofers are optimally set for a large variety of acoustic conditions. This enhances consistency of reproduction both within and across facilities.
- All aspects of an acoustic system of multiple monitors such as response flatness, time of flight, subwoofer crossover phase, and level alignment are fully automated and optimized.
- Wizards ensure a pain-free and thorough setup together with extensive system documentation
- EQ stages in each monitor and subwoofer.
- System compensation delays for use with video displays.
- System Setup files for saving and recalling all settings.
- Genelec SAM systems support all standard AES/EBU formats of digital audio.
- The SAM Series will accept sampling rates ranging from 32 kHz to 192 kHz.
- SAM Series also accepts analog signals and perform with all the features and benefits.
- The Genelec Loudspeaker Manager (GLM) is a computer program that provides control of all monitors on the network.
- Up to 30 monitors and subwoofer can be defined and controlled via standard CAT cabling.
- Functions and settings are stored in System Setup files or directly into each monitor.
- AutoCal is an automated algorithm that runs within GLM using a calibrated Genelec measurement microphone (included).
- Correctly sets levels, distance delays, phase (for subwoofers) and room response equalization.
- SinglePoint and MultiPoint microphone locations for one, two or three-person mixing environments.
- Interactive Response Editor provides visual readout of measured and corrected response curves.
What are the differences between 82xx and 83xx Series SAM products?
There are several improvements in the new 83xx products. The capability to adapt to the room acoustics has been improved greatly, and, for example, 8320 and 8330 products provide four to five times higher number of tools for room response compensation compared to the 82xx products. The delay alignment capability has been expanded from about 80 ms to about 200 ms in 83xx. 83xx have been time-equalized internally to have a constant input-to-output delay above 400 Hz. 83xx products can level align by 60 dB.
All 83xx and 73xx products support distributed bass management, enabling the audio signal to be passed unmodified from the source and through the subwoofer into the monitors. 73xx subwoofers support a multichannel analogue audio signal and stereo AES/EBU digital audio signal.
What determines the calibration used? Do the switches sum with the internal settings?
Monitors and subwoofers are under network control when there is an operating GLM Network connected to them. Then, the System Setup file loaded into GLM apply. If the settings have been stored inside monitors and subwoofers, they are used when a switch is set to select “Stored Settings”. The switches on a monitor or subwoofer have effect when one this switches is set to select “Manual Control”.
What do I gain if I choose SAM instead of Analogue monitoring?
The Genelec Loudspeaker Manager (GLM) Package provides all necessary components to establish connectivity to SAM monitors. Complete network system setup and control of up to 30 monitors and subwoofer is possible via a standard CAT5 or CAT6 cabling.
The GLM includes simple to use step-by-step setup wizards to ensure a pain-free and thorough installation, access to extensive Acoustical Settings in each monitor, and System Setup files for saving and recalling of all settings.
As an essential part of the GLM software, GLM AutoCal is a fully automated acoustical calibration tool for a single room multi-monitor system which combines decades of acoustic research along with our proprietary DSP and network control. The AutoCal system produces monitor-generated test signals recorded by a calibration microphone to determine correct acoustical alignments for every monitor and subwoofer on the GLM control network.
What is the delay (latency) through SAM monitors?
The latency (delay) of analogue monitors depends on the frequency. The latency is usually of no significance. It starts increasing towards the low frequencies, notably close to the low corner frequency. All analogue monitors, both passive and active, exhibit this behaviour.
In SAM monitors the latency for a digital AES/EBU input, the delay is 3.75 – 4.5 ms, depending on the sample rate (shorter delay for higher sample rate). The delay in the analogue input is fixed to about 4 ms.
What is the network for?
The GLM Control Network allows for communication, control and monitoring (telemetry) with the monitors and subwoofers.
What is the quality and performance of the digital AES/EBU input and the A/D - D/A converters?
Monitoring of digital audio in AES/EBU supports sampling rates up to 192 kHz and word length up to 24 bits. The digital audio is sample rate converted to ensure synchronization with all sources. An AES/EBU thru output provides daisy-chaining to more monitors.
For the analogue audio input and output of the processed audio to the power amplifiers, Genelec uses professional quality A/D and D/A converters with at least 24 bit nominal resolution. Depending on the monitor model, the digital and analogue audio signals are internally processed at 96 kHz, and there is a true 48 kHz wide audio path from the input to the acoustic output, with the tweeter system equalized up to about 40 kHz.
In smaller products and subwoofers the internal sample rate is 48 kHz and the audio path is 24 kHz wide. All audio, including the analogue audio, goes through the digital signal processing and the internal dynamic range of the signal processing is always better than the equivalent of 24 bit resolution.
When should I run GLM AutoCal?
AutoCal can be run at any time; however, there is little reason to repeat the process unless:
- The monitors have been moved
- The listening position has changed
- There is a change in the acoustic conditions – equipment moved, acoustic treatments applied, walls moved, etc.
- You wish to calibrate for another listening position
- You wish the verify that the system is still working correctly
Where does the volume control happen in SAM Systems?
Genelec SAM monitors and subwoofers implement the volume control as a part of the DSP processing. Decreasing the value makes the audio sample values smaller. This is done using proper dithering and with sufficient dynamic range so that there is no increase of distortion or noise at any setting of the volume control. Because of this, using an analogue volume control cannot bring any further benefit.
The command to set the volume to a certain level is created in the computer user interface software GLM and mediated into all monitors and subwoofer using the Genelec GLM control network. No audio data travels on the control network.
Who makes the SAM measurement microphone?
The GLM Calibration Microphone has been designed by Genelec for use with GLM AutoCal and is manufactured and calibrated by Genelec in Finland.
Who should I contact if I run into troubles with SAM setup?
Each country has a distributor with a SAM Product Specialist who has been trained by Genelec. Contact details are available under Where to Buy.