Phone: 02-9798-9233 Fax: 02-9798-0017 Audio Speakers & PA 03-164 SB ACOUSTICS ¾" DOME TWEETER - SDC 20MMØ SOFT DOME TEXTILE - 92MMØ ACOUSTIC LIP REV.0 (04.04.2016) 100 95 90 85 80 75 70 65 60 55 50 45 40 16.0 14.7 13.3 12.0 10.7 9.3 8.0 6.7 5.3 4.0 2.7 1.3 0.0 Ohm dB Response Curve : (Blue) : on axis ( Green ) : ------ ------ 30° off-axis ( Red ) : 60° off-axis --------- (IEC baffle, mic. distance 31.6 cm, SPL shown for 2.83 V / 1 m) 100 200 300 500 1k 2k 3k 5k 10k 20k 40kHz Ø60.0 Ø92.0 26.5 31.6 3.3 Ø80.0 Ø80.0 (x4) Ø4.2 (x4) 75° 15° Large surround dome for increased acoustic output. Dual balanced compression chamber for improved dynamics. Copper cap for reduced voice coil inductance and minimum phase shift. Saturation controlled motor system for low distortion. Non-reflective rear chamber with optimized damping for improved dynamics. Flow optimized vented pole piece for optimum coupling to rear chamber. CCAW voice coil for low moving mass. Long life silver lead wires. Low resonance frequency. Impedance 4Ω (Re 3.1Ω) Power 40Wrms Sens. 91dB Fs 720Hz Coil 20.4mmØ Qms 2.41 Qes 1.55 Qts 0.95 Code SB21SDC-C000-4 SB ACOUSTICS ¾" DOME TWEETER - ST 19MMØ SOFT DOME TEXTILE - 88MMØ FACE PLATE Optimized damping in pole cavity to eliminate internal reflection. Fine weave soft fabric dome for smooth frequency response. Saturation controlled motor system for reduced distortion. CCAW voice coil for low moving mass. Long life silver lead wires. Impedance 4Ω (Re 3.4Ω) Power 30Wrms Sens. 88.5dB Fs 980Hz Coil 19.1mmØ Code SB19ST-C000-4 Ø 78.0±0.2 21.0 3.0 Ø 88.0±0.15 Ø 60.0 Ø4.0 (x4) Ohm 100 95 90 85 80 75 70 65 60 55 50 45 40 dB (IEC baffle, mic.distance 31.6 cm, SPL shown for 2.83 V / 1 m) REV. 3 (11.03.2016) Response Curve : (Blue) : on axis (Green) : 30° off-axis ( Red ) : ------ ------ ------ 60° off-axis 40.0 36.7 33.3 30.0 26.7 23.3 20.0 16.7 13.3 10.0 6.7 3.3 0.0 100 200 500 1k 2k 5k 10k 20 k 30kHz SB ACOUSTICS ¾" DOME TWEETER - SDCN • Large surround dome for increased acoustic output • Copper cap for reduced voice coil inductance and minimum phase shift • Compact low distortion neodymium motor system • Non-resonant rear chamber with optimized damping for improved dynamics • CCAW voice coil for low moving mass • Long life silver lead wires • Low resonance frequency Impedance 4Ω (Re 3.1Ω) Fs 850Hz Sens. 90dB Power 40Wrms Qms 2.44 Qes 2.45 Qts 1.22 Code SB21SDCN-C000-4 Ø6.0(x4) Ø3.2(x4) Ø50.0±0.10 3.2 Ø58.0 +0.1 -0.2 15.9 Ø38.25 24.0 REV.1 (26.03.2020) 16.0 14.7 13.3 12.0 10.7 9.3 8.0 6.7 5.3 4.0 2.7 1.3 0.0 Ohm dB Response Curve : (Blue) : on axis ( Green ) : 30° off-axis ( Red ) : 60° off-axis ------ ------ --------- (IEC baffle, mic. distance 31.6 cm, SPL shown for 2.83 V / 1 m) 100 200 300 500 1k 2k 3k 5k 10k 20k 40kHz 100 95 90 85 80 75 70 65 60 55 50 45 40 SB ACOUSTICS ¾" RING DOME TWEETER - RDCN • Non-resonant diaphragm design for minimum high frequency break-up • Copper cap for reduced voice coil inductance and minimum phase shift • Compact low distortion neodymium motor system • Non-resonant rear chamber with optimized damping for improved dynamics • CCAW voice coil for low moving mass • Long life silver lead wires • Low resonance frequency Impedance 4Ω (Re 3.1Ω) Fs 850Hz Sens. 89.5dB Power 40Wrms Qms 2.71 Qes 2.45 Qts 1.28 Code SB21RDCN-C000-4 3.2 Ø50.0±0.10 Ø3.2(x4) Ø6.0(x4) 15.9 Ø38.25 22.7 Ø58.0+0.1 -0.2 REV.1 (26.03.2020) Ohm dB Response Curve : (Blue) : on axis ( Green ) : 30° off-axis ( Red ) : 60° off-axis ------ ------ --------- (IEC baffle, mic. distance 31.6 cm, SPL shown for 2.83 V / 1 m) 100 200 300 500 1k 2k 3k 5k 10k 20k 40kHz 100 95 90 85 80 75 70 65 60 55 50 45 40 16.0 14.7 13.3 12.0 10.7 9.3 8.0 6.7 5.3 4.0 2.7 1.3 0.0
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