Scan Speak 21 W 8555-00 Aus einem alten Bauprojekt (Vollaktiver Manger-Center), ist immer noch einer der besten 8 Subs. Für ca. 25l geschlossen. Funktioniert technisch einwandfrei.Die Lötfahnen für Stecker sind ab, Kabel muss also angelötet werden.Siehe Bilder. T-S Parameters Resonance frequency [fs] 20 Hz Mechanical Q factor [Qms] 4.50 Electrical Q factor [Qes] 0.33 Total Q factor [Qts] 0.31 Force factor [Bl] 8.2 Tm Mechanical resistance [Rms] 0.89 kg/s Moving mass [Mms] 32 g Compliance [Cms] 1.98 mm/N Effective diaph. diameter [D] Effective piston area [Sd] 167 mm 220 cm² Equivalent volume [Vas] 134 l Sensitivity (2.83V/1m) 87 dB Ratio Bl/?Re 3.50 N/?W Ratio fs/Qts Notes: 65 Hz WOOFER 21W/8555-00 The Symmetric Drive (SD-1) concept with copper in the magnet system was invented by Scan-Speak. High-quality magnet system design has thus been a key feature of Scan-Speak design since the companys inception. The Classic woofers are highly praised, and are used in some of the worlds most exceptional high-end loudspeakers. Some feature Kevlar cones, others have the innovative carbon fibre paper cones. KEY FEATURES: · Patented Symmetrical Drive Motor Design · Low-Loss linear suspension · Low Damping SBR Rubber Surround T-S Parameters Resonance frequency [fs] 20 Hz Mechanical Q factor [Qms] 4.50 Electrical Q factor [Qes] 0.33 Total Q factor [Qts] 0.31 Force factor [Bl] 8.2 Tm Mechanical resistance [Rms] 0.89 kg/s Moving mass [Mms] 32 g Compliance [Cms] 1.98 mm/N Effective diaph. diameter [D] Effective piston area [Sd] 167 mm 220 cm² Equivalent volume [Vas] 134 l Sensitivity (2.83V/1m) 87 dB Ratio Bl/?Re 3.50 N/?W Ratio fs/Qts Notes: 65 Hz IEC specs. refer to IEC 60268-5 third edition. All Scan-Speak products are RoHS compliant. Data are subject to change without notice. Datasheet updated: March 6, 2013. · Low Resonance Freq. 20Hz · Air Dried Paper/Carbon Fibre Cone · 42mm Voice Coil Electrical Data Nominal impedance [Zn] 8 ? Minimum impedance [Zmin] 6.4 ? Maximum impedance [Zo] 80.5 ? DC resistance [Re] 5.5 ? Voice coil inductance [Le] Power Handling 100h RMS noise test (IEC 17.1) Long-term max power (IEC 17.3) Voice Coil & Magnet Data 0.4 mH 100 W- W Voice coil diameter 42 mm Voice coil height 19 mm Voice coil layers 2 Height of gap 6 mm Linear excursion ± 6.5 mm Max mech. excursion ± 12 mm Unit weight 2.2 kg N.C. Madsensvej 1 · 6920 Videbæk · Denmark · Phone: +45 6040 5200 · www.scan-speak.dk WOOFER 21W/8555-00 Advanced Parameters (Preliminary) Electrical data Mechanical Data Resistance [Re] 5.58 ? Force Factor [Bl] 7.81 Tm Free inductance [Leb] 0.158 mH Moving mass [Mms] 33.9 g Bound inductance [Le] 2.04 mH Compliance [Cms] 1.22 mm/N Semi-inductance [Ke] 0.033 SH Mechanical resistance [Rms] 0.70 kg/s Shunt resistance [Rss] 101 ? Admittance [Ams] 0.09 mm/N N.C. Madsensvej 1 · 6920 Videbæk · Denmark · Phone: +45 6040 5200 · www.scan-speak.dk

scan speak p21wo-20-08 8” woofer pair. Bought new from madisound around 2019 for a project that never happened. I’ve never applied voltage to these. In fact, I removed them from the packaging for the first time to take these pictures. I will pack in the same manner as madisound did

Scan-speak vintage sub woofer speakers 21W 3804 P2a in good condition. Removed from Saba cabinets which have been in my atic since 1993 (everything working when last coonected).Quality units from danish manufacturer Scan-SpeakAlso selling matched pair 2 tweeters, (see my other listings)

Scan-speak vintage sub woofer speakers 21W 3804 P2a in good condition. Removed from Saba cabinets which have been in my atic since 1993 (everything working when last coonected).Quality units from danish manufacturer Scan-SpeakAlso selling 2 mid range drivers & 2 tweeters, (see my other listings)

1x Scan Speak 21W4208 4B Tieftner Basstreiber. Aus Scansonic Boxen 1x voll funktionsfhig zweite ist mit defekte Membran ( siehe Bilder) funktioniert aber trotzdem und kann auf Wunsch mitgegeben werden. Keine Garantie Rcknahme etc