Normal 0 21 false false false EN-US X-NONE AR-SA I am selling a pair of these legendary speakers from the audiophile company Scan Speak, model 21W-3804-P2A, with alnico magnet. Diameter 8” (21 cm), weight 1,1 kg - Aluminium cast frame - 2-layer voice coil dia. 38 mm - Impedance 4 Ohm - Coated rubber suspension - Alnico magnet - Technically 100% functional, original and unrepaired. These speakers are labeled “SD” for Symmetric Drive. In 1993, Scan-Speak A/S filed a patent application for a magnet system with three Faraday rings. The original SD concept is based on an electrically conductive extended cap (typically copper), as described and patented by Ragnar Lian, 1972, then working at Scan-Speak, and presented in AES papers in 1974 and 1988. Prior to this a copper cap had been used by others, e.g. Philips.

All 4 speakers are in good used condition - have been tested and are working properly - everything pictured comes with purchase ABOUT USFaith Farm Ministries has been standing on the front lines in the war against addiction for 69 years. Our 10-month, men’s and women’s addiction recovery program, focuses strongly on the believer’s Biblical identity in Christ and being transformed by the renewing of the mind to the amazing Truth of the Gospel.Our program operates by a “thrift store” model, depending upon the Lord to provide our resources through donations of used saleable furniture, clothing, other household goods and unrestricted cash donations by the people in our community. This allows us to provide the program free of charge to those who come seeking recovery. “The Farm” serves up to 450 men and women from all walks of life, from every corner of the country, from every ethnicity and denominational background, who all come to seek recovery through a life in union with Jesus Christ and the power of the Holy Spirit. Our curriculum is accredited through our close partnership with a local Bible College & Seminary and we believe we are the only recovery mission in the world with college-accredited curriculum.Your purchase today provides direct support to the recovery of hundreds of sons, brothers, husbands, dads, daughters, sisters, wives & moms, and helps us to continue to minister salvation, healing, restoration, and hope. Thank you for bidding, thank you for buying, thank you for your prayers, and thank you for supporting Faith Farm Ministries.© 2020 Faith Farm Ministries. | All Rights Reserved |9538 US Hwy 441 Boynton Beach, FL 33472 | Fort Lauderdale Rescue Tabernacle, Inc., d/b/a Faith Farm Ministries is a 501(c)(3) organization.

All 4 speakers are in good used condition - have been tested and are working properly - everything pictured comes with purchase ABOUT USFaith Farm Ministries has been standing on the front lines in the war against addiction for 69 years. Our 10-month, men’s and women’s addiction recovery program, focuses strongly on the believer’s Biblical identity in Christ and being transformed by the renewing of the mind to the amazing Truth of the Gospel.Our program operates by a “thrift store” model, depending upon the Lord to provide our resources through donations of used saleable furniture, clothing, other household goods and unrestricted cash donations by the people in our community. This allows us to provide the program free of charge to those who come seeking recovery. “The Farm” serves up to 450 men and women from all walks of life, from every corner of the country, from every ethnicity and denominational background, who all come to seek recovery through a life in union with Jesus Christ and the power of the Holy Spirit. Our curriculum is accredited through our close partnership with a local Bible College & Seminary and we believe we are the only recovery mission in the world with college-accredited curriculum.Your purchase today provides direct support to the recovery of hundreds of sons, brothers, husbands, dads, daughters, sisters, wives & moms, and helps us to continue to minister salvation, healing, restoration, and hope. Thank you for bidding, thank you for buying, thank you for your prayers, and thank you for supporting Faith Farm Ministries.© 2020 Faith Farm Ministries. | All Rights Reserved |9538 US Hwy 441 Boynton Beach, FL 33472 | Fort Lauderdale Rescue Tabernacle, Inc., d/b/a Faith Farm Ministries is a 501(c)(3) organization.

2 Stück ScanSpeak Lautsprecher 21W/7554ca. 22 x 10cm rund liegen schon längere Zeit auf Lagerwaren noch nicht verbautZeit und Lagerschäden sind nicht auszuschließen!Privatverkauf!keine Garantie oder Gewährleistung!

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