How does the S5m’s bass-reflex system compare to the sealed-cabinet mode?
In bass-reflex mode, the S5m achieves a theoretical in-room bass extension down to approximately 29 Hz; in sealed (acoustic suspension) mode, this is extended to about 32 Hz, with slightly tighter low-frequency response.
What does the DPC Array do in the S5m, and why is that important?
The DPC-Array combines a single 28 mm beryllium tweeter with two 28 mm Textreme (TPCD) midrange drivers to deliver astonishing accuracy, controlled direct radiation, and minimal distortion in the critical vocal and high-frequency ranges.
What is the recommended amplifier power for the S5m?
Amplifiers ranging from 50 to 300 W RMS are recommended to allow the S5m to deliver optimal performance in terms of dynamics, low distortion, and high sound pressure level.
What about the impedance, and is the S5m difficult to drive?
The nominal impedance is 4 Ω, with a minimum impedance of approximately 3.0 Ω; amplifiers must be capable of delivering sufficient current and remain stable at lower loads.
What are the dimensions and weight of the S5m, and what does that mean for placement?
The S5m measures approximately 600×240×400 mm (HxWxD) and weighs 19 kg; this means that sturdy stands or shelves are required, and that sufficient space behind the speaker is important (for the bass reflex port).
Is the S5m suitable for use in a home theater in combination with other S-Series speakers?
Yes, the S5m shares technologies such as the DPC Array with other S-Series models, making it easier to achieve consistent sound for left/right or surround applications; thanks to its THX Ultra / THX Dominus certification, it is suitable for reference-level performance in larger rooms.
What types of connections or connectivity does the S5m offer?
The S5m is a passive speaker with no built-in amplification or DSP; it must be connected via conventional speaker terminals, with no electronic inputs such as XLR or RCA on the cabinet itself.
Can the S5m’s bass reflex port be sealed, and what effect does that have?
Yes, the ports can be completely blocked, causing the speaker to operate in sealed mode; this results in a slightly reduced bass response but provides a tighter response and can offer advantages in rooms with challenging acoustics.
How sensitive is the S5m, and what does this mean for the required amplifier quality?
Sensitivity is 89.6 dB (2.83 V / 1 m); this requires an amplifier with a robust power supply and low distortion to deliver high sound pressure levels without sound distortion.
What is the S5m’s frequency response, and what range can be expected at low frequencies?
Within the listening window (±1.5 dB), the S5m performs between 80 Hz and 20 kHz; at −10 dB, it reaches approximately 35–37 Hz in bass-reflex mode and approximately 41–37 kHz in sealed mode. In a living room environment, bass depth is perceived down to approximately 29–32 Hz.
