Phone: 02-9798-9233 Fax: 02-9798-0017 Audio Speakers & PA 03-172 • Vented pole piece for reduced compression Impedance 4Ω (Re 3.1Ω) 8Ω (Re 5.9Ω) Power 50Wrms 50Wrms Sens. 89.5dB 86.5dB Fs 34.5Hz 36.5Hz Qms 3.58 3.48 Qes 0.3 0.37 Qts 0.28 0.34 Vas 20.5L 20L Code SB15NRX2C30-4 SB15NRX2C30-8 Impedance 8Ω (Re 5.7Ω) Fs 38Hz Sens. 88dB Power 50Wrms Qms 4.8 Qes 0.35 Qts 0.33 Vas 20.7L Materials Uncoated Code SB15NRXC30-8-UC Impedance 8Ω (Re 5.7Ω) Fs 38Hz Sens. 88dB Power 50Wrms Qms 4.8 Qes 0.35 Qts 0.33 Vas 20.7L Materials Coated Code SB15NRXC30-8 SB ACOUSTICS 5" MID-WOOFER - NRXC ALUMINIUM CHASSIS - NOREX FIBRE CONE COATED Ø138.0±0.10 4-Ø8.50 4-Ø4.30 Ø 150.0±0.4 6.5 Ø 100.0 Ø 123.9 78.9 68.3 (IEC baffle, mic. distance 31.6 cm, SPL shown for 2.83 V / 1 m) Response Curve : (Blue) : on axis (Green) : 30° off-axis ( Red ) : ------ ------ ------ 60° off-axis Proprietary cone material with natural fibres made in-house with an optional thin polyurethane protection coating. Low damping SBR rubber surround with high exertion and resilience. Open structure cast frame for reduced reflections and compression. Aluminium alloy for light weight, non-magnetic and extra rigidity. Shorting Copper cap on pole piece. Non-inductive CCAW fibre glass 30mm coil former. Silver lead wires. Vented pole piece. Impedance 4Ω (Re 3.1Ω) Fs 41Hz Sens. 91dB Power 50Wrms Qms 5.3 Qes 0.31 Qts 0.29 Vas 16.7L Materials Coated Code SB15NRXC30-4 Ø138.0±0.10 Ø8.5 (x4) Ø4.3 (x4) Ø 123.9 78.9 Ø100.0 6.5 Ø150.0 68.3 (IEC baffle, mic. distance 31.6 cm, SPL shown for 2.83 V / 1 m) Rev.2 (26.02.2019) Response Curve : (Blue) : on axis (Green) : 30° off-axis ( Red ) : 60° off-axis ------ ------ ------ 100 95 90 85 80 75 70 65 60 55 50 45 40 20 50 100 200 500 1k 2k 5k 10k 20kHz 160 147 133 120 107 93 80 67 53 40 27 13 0 Ohm dB SB ACOUSTICS 5" MID-WOOFER - NRX2C • Vented cast aluminium chassis for optimum strength and low compression • Norex® proprietary cone material with natural fibres made in-house • Soft low damping rubber surround for improved transient response • Non-conducting fibre 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 Impedance 8Ω (Re 5.7Ω) Fs 39Hz Sens. 87dB Power 50Wrms Qms 4.4 Qes 0.4 Qts 0.37 Vas 17.7L Code SB15MFC30-8 Ø138.0 4-Ø8.50 4-Ø4.30 Ø 150.0±0.4 6.5 Ø 100.0 Ø 123.9 79.0 68.4 (IEC baffle, mic. distance 31.6 cm, SPL shown for 2.83 V / 1 m) Response Curve : (Blue) : on axis (Green) : 30° off-axis ( Red ) : ------ ------ ------ 60° off-axis 100 95 90 85 80 75 70 65 60 55 50 45 40 20 50 100 200 500 1k 2k 5k 10k 20kHz 160 147 133 120 107 93 80 67 53 40 27 13 0 dB Ohm SB ACOUSTICS 5" MID-WOOFER - MFC ALUMINIUM CHASSIS - POLYPROPYLENE CONE Vented cast aluminium chassis for optimum strength and low compression. Unique mineral filled polypropylene cone material, made in-house. Soft low damping rubber surround for improved transient response. Non-conducting fibre glass CCAW voice coil former and extended copper sleeve on pole piece for low inductance and low distortion. Long life silver lead wires. Vented pole piece for reduced compression. Impedance 4Ω (Re 3.1Ω) Fs 35.5Hz Sens. 90dB Power 50Wrms Qms 5.26 Qes 0.3 Qts 0.28 Vas 19.4L Code SB15MFC30-4 NRX2 is the new version of the NRX Series of speaker drivers. NRX is the "Norex" proprietary paper cone drivers by SB Acoustics. Through the development phases of some newer generation drivers with different cone materials (Carbon fibre, Polypropylene, Aluminium, Ceramic etc.) other improvements were made to the suspension system, damping, voice coil and coil former. All newer generations included a variety of subtle improvements summing-up over the years to quite a few improvements. The NRX2 takes the learning from many years of further development and brings all of that to the market as a new, but very similar driver series. NRX2 is more detailed, open, dynamic and with lower distortion. In most cases you can substitute NRX to/from NRX2 without the need for crossover modifications. 30mm Voice coil, Norex paper cone. Low damping SBR rubber surround with high exertion and resilience. Open structure cast frame for reduced reflections and compression. Aluminium alloy for light weight, non-magnetic and extra rigidity. Shorting Copper cap on pole piece. Non-inductive CCAW fibre glass 30mm coil former. Silver lead wires. Vented pole piece. Available in 4 or 8Ω version.
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