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1 ohm woofer is this future for cabinets ?
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DJ123 View Drop Down
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Joined: 02 March 2010
Location: UK
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Points: 60 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DJ123 Quote  Post ReplyReply Direct Link To This Post Topic: 1 ohm woofer is this future for cabinets ?
    Posted: 20 May 2017 at 11:42am

 B & C  PROFESSIONAL COMPONENTS

21iPAL - 21" EXTREME POWER WOOFER 

  • THE NEW B&C 21iPAL IS AN EXTREME HIGH POWER 21" WOOFER THAT HANDLES 2,500 WATTS AES STANDARD & 5,000 WATTS PROGRAM
  • FEATURES A LARGE 6" VOICE COIL, SUPER HIGH 22.0MM XMAX, HIGH SPL OF 99DB & LIGHTWEIGHT NEODYMIUM MAGNET
  • VERY STRONG TIGHT CHEST POUNDING INTENSE DEEP BASS SOUND
  • ALUMINUM DEMODULATION RING HELPS KEEP A FLAT CONTROLLED RESPONSE & VERY LOW DISTORTION
  • VENTILATED VOICE COIL GAP FOR LOWER POWER COMPRESSION
  • THE B&C 21iPAL 21"  WOOFER IS OPTIMIZED FOR EXTREMELY HIGH OUTPUT SUBWOOFER SYSTEMS IN CONCERT, SOUND REINFORCEMENT, THEATER, ETC.
  • AVAILABLE IN 1 OHM ONLY

VERY LARGE 6" VOICE COIL, ALUMINUM DEMODULATION RING, 5,000 WATTS POWER, LIGHT NEO MAGNET W/ 22.0MM XMAX!

21iPAL

1 Ohm

  

Item Price: $1,399.95

SPEAKER MODEL

21iPAL

SPECIFICATIONS

Nominal Basket Diameter

21" / 530mm

Impedance

1 ohm

RMS Power Rating

2,500 Watts

Program Power 5,000 Watts  

Frequency Response

37Hz - 1.0kHz

Sensitivity (1W/1m)

99dB

Voice Coil Diameter

6" / 152.4mm

Winding Depth 1.9" / 48mm
Magnetic Gap Depth.7" / 18mm
Flux Density1.35T

RECOMMENDED CABINET SPECIFICATIONS

Cabinet Volume6.8 cu. ft. / 192.6 Liters
Inside Cabinet Dimensions22" wide x 26" height  x 20.5" deep
Port Size22" wide x 2.5" height  x 13.875" deep
Tuning Frequency37Hz

MOUNTING INFORMATION

Overall Diameter21.5" / 547mm
Bolt Circle Diameter20.7" / 527mm
Baffle Cutout Diameter20" / 508mm
Depth10.59" / 269mm
Flange & Gasket Thickness.51" / 13mm
No. Of Mounting Holes8
Net Weight48.5 lbs./ 22 kg.
Shipping Weight54 lbs./ 24.5 kg.

MATERIALS

BasketCast Aluminum
ConePaper
Cone TreatmentWaterproof Front & Back
Cone ShapeRadial
SpiderDouble Silicone
Surround ShapeTriple Roll
FormerGlass Fiber
Pole DesignT-Pole
Winding Depth Aluminum
MagnetNeodymium

  THIELE-SMALL PARAMETERS

Resonant Frequency (fs)

37 Hz
Impedance (Re).7 ohms
Electrical Factor (Qes).22
Mechanical Q (Qms)4.9
Total Q (Qts) .21
Compliance Equiv. Vol. (Vas)155 Liters/5.47cu. ft.
Voice Coil Overhang (Xmax)22.0mm
Reference Efficiency3.2%
Surface Area of Cone.1680 m2
Diaphragm Mass (Mms)487 Grams
BL Factor19.1 T-M
Coil Inductance (Le).5mH
FREQUENCY RESPONSE IN BASS REFLEX CABINET
CABINET SPECS

  • Enclosure Type - Bass Reflex/Ported

  • Cabinet Size - 6.8 cu. ft. / 192.6 Liters

  • Tuning - 37Hz

  • Slot Port - 22 Wide x 2.5" Height

  • Port Depth - 13.875"

FREQUENCY RESPONSE
B&C 21iPal Frequency
IMPEDANCE CURVE
B&C 21iPal Impedance
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shagnasty View Drop Down
Old Croc
Old Croc


Joined: 30 July 2007
Location: Guildford, UK
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Points: 7683 		Post Options Post Options   Thanks (0) Thanks(0)   Quote shagnasty Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2017 at 7:25pm
Not seeing the 125A mini camlok connectors you are gonna need to get 35mm speaker lead onto this baby?
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krazyneil View Drop Down
Young Croc
Young Croc
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Joined: 06 December 2007
Location: Bolton ,lancs
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Points: 1206 		Post Options Post Options   Thanks (0) Thanks(0)   Quote krazyneil Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2017 at 7:43pm
are there amps capable of 1 ohm loading ?
GOD TOLD ME TO DO IT !!!!!
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BASSHORSE View Drop Down
Young Croc
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Joined: 19 September 2007
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Points: 1159 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BASSHORSE Quote  Post ReplyReply Direct Link To This Post Posted: 20 May 2017 at 7:52pm
just buy 4 & put them in series Big smile
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Ricci View Drop Down
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Joined: 13 March 2017
Location: Louisville, KY
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Points: 74 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ricci Quote  Post ReplyReply Direct Link To This Post Posted: 22 May 2017 at 10:09pm
I've been using these drivers for a few years. They are very expensive. There are a limited amount of amplifiers that are "happy" driving a single. It's easier to match them to amps if you run a pair or 4 in series. The Ipal-mod or M-force mod will run them in singles of course. A K10 or K20 will attempt it but current limits well before reaching the drivers potential. Things start to click with 4 in series on one bridged. The Speakerpower Torpedo or SP series amps will run these very well. If you match the loading on the amp with them, they do perform as advertised.

Edited by Ricci - 22 May 2017 at 10:13pm
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