BMS BMS8C250H 8 C 250 H – 8″ Coaxial Speaker 200 W + 80 W 16 Ohm

• 93 dB sensitivity 1 W / 1 m
• 200 W + 80 W Power Handling
• 2" + 1.75" Sandwich Voice Coil
• Single Point Source providig coherent Wave Front
• 90° conical Dispersion
• Optimal for compact 2- or 3-way Systems

50 mm (2 in) copper voice coil
70 - 3000 Hz response
94 dB sensitivity
Neodymium magnet allows a very light yet powerful motor assembly
Shorting copper cap for extended HF response
400 W continuous program power capacity
Ventilated voice coil gap for reduced power compression

Compatible with NEXO PS8

• Specifications
  • Nominal diameter200 mm (8.0 in)
  • Nominal impedance8 Ω
  • Minimum impedance6.6 Ω
  • Nominal power handling *200 W
  • Continuous power handling *400 W
  • Sensitivity (1W/1m) *94.0 dB
  • Frequency range65 - 3000 Hz
  • Voice coil diameter51 mm (2.0 in)
  • Winding materialCopper
  • Former materialGlass Fibre
  • Winding depth17 mm (0.65 in)
  • Magnetic gap depth8 mm (0.31 in)
  • Flux density1.05 T
• Design
  • Surround shapeDouble Roll
  • Cone shapeExponential
  • Magnet materialNeodymium Inside Slug
  • SpiderSingle
  • Pole designStraight Pole
  • Woofer cone treatmentTWP Waterproof Both Sides
  • Recommended enclosure14.0 dm3 (0.49 ft3)
  • Recommended tuning65 Hz
• Parameters *
  • Fs66 Hz
  • Re5.3 Ω
  • Qes0.41
  • Qms3.6
  • Qts0.37
  • Vas14.0 dm3 (0.5 ft3)
  • Sd220.0 cm2 (34.1 in2)
  • η₀1.0 %
  • Xmax7.0 mm
  • Xvar7.0 mm
  • Mms28 g
  • Bl12.4 Txm
  • Le0.5 mH
  • EBP160 Hz
• Mounting And Shipping Info
  • Overall diameter225 mm (8.8 in)
  • Bolt circle diameter210 mm (8.3 in)
  • Baffle cutout diameter187.0 mm (7.4 in)
  • Depth90 mm (3.5 in)
  • Flange and gasket thickness11 mm (0.4 in)
  • Air volume occupied by driver1.1 dm3 (0.04 ft3)
  • Net weight1.8 kg (4.0 lb)
  • Shipping units1
  • Shipping weight2.2 kg (4.8 lb)
  • Shipping box300x160x180 mm (11.8x6.3x7.1 in)

ALPHA- Serie 100W- 200W

Recommended for professional audio and bass guitar applications as a mid-range. Sealed basket makes this
woofer independent of enclosure design.

• Nominal Basket Diameter 8“, 203.2 mm
• Nominal Impedance 8 ohms
• Power Rating Watts 125 W / Music Program 250 W
• Resonance 514 Hz
• Usable Frequency Range 400 Hz - 4.8 kHz
• Sensitivity 100.9
• Magnet Weight 20 oz.
• Gap Height 0.25“, 6.35 mm
• Voice Coil Diameter 1.5“, 38.1 mm

• Resonant Frequency (fs) 514 Hz
• DC Resistance (Re) 7.32
• Coil Inductance (Le) 0.34 mH
• Mechanical Q (Qms) 4.48
• Electromagnetic Q (Qes) 2.08
• Total Q (Qts) 1.42
• Compliance Equivalent Volume (Vas) 0.8 liters / 0.03 cu.ft.
• Peak Diaphragm Displacement Volume (Vd) 0cc
• Mechanical Compliance of Suspension (Cms) 0.01 mm/N
• BL Product (BL) 8.9 T-M
• Diaphragm Mass inc. Airload (Mms) 6.9 grams
• Efficiency Bandwidth Product(EBP) 247
• Maximum Linear Excursion (Xmax) 1.6 mm
• Surface Area of Cone (Sd) 205.9 cm²
• Maximum Mechanical Limit (Xlim) 3.0 mm

• Recommended Enclosure Volume
  Sealed N/A
  Vented N/A
• Overall Diameter 8.22“, 208.8 mm
• Baffle Hole Diameter 7.19“, 182.5 mm
• Front Sealing Gasket fitted as standard
• Rear Sealing Gasket fitted as standard
• Mounting Holes Diameter 0.22“, 5.5 mm
• Mounting Holes B.C.D. 7.75“, 196.9 mm
• Depth 3.25“, 83 mm

• Copper voice coil
• Polyimide former
• Ferrite magnet
• Pressed steel basket with closed back
• Paper Cone
• Paper cone edge
• Solid composition paper dust cap

• 94 dB sensitivity 1 W / 1 m
• 250 W Power handling
• 2" voice coil
• Double treated cone for water protection
• Neodymium magnet system
• Tripie aluminum demodulating rings for ultra low distortion
• Optimal for compact 2-way systems
• Light weight carbon fibre diaphragm

Nominal Specifications

    * Nominal Diameter 8“, 200 mm
    * Overall Diameter 8.81/8.18“, 223.8/203.9 mm
    * Bolt Circle Diameter 8.27“, 210 mm
    * Baffle Cutout Diameter 7.24“, 184 mm
    * Depth 4.59“, 116.7 mm
    * Flange and Gasket Thickness 0.42“, 10.7 mm


Electrical Specifications

    * Minimum Impedance 6.4 Ohm
    * Nominal Impedance 8 Ohm
    * Nominal Power Handling*** 200 W
    * Maximum Power Handling**** 400 W
    * Sensitivity (1W/1m) 95 dB
    * Frequency Range 60 - 5000 Hz
    * Voice Coil Diameter 2“, 52 mm
    * Winding Material Aluminium
    * Former Material Glass Fiber
    * Winding Depth 0.76“, 19.3 mm
    * Magnetic Gap Depth 0.35“, 9 mm
    * Flux Density 1.15 T


THIELE & SMALL Parameters

    * Resonant Frequency (fs) 58 Hz
    * DC Resistance (Re) 5.1 Ohm
    * BL Product (BL) 11.3 N/A
    * Diaphragm Mass inc. Airload (Mms) 24 grams
    * Mechanical Compliance of Suspension (Cms) 0.31 mm/N
    * Rms 0.93 Kg/s
    * Electromagnetic Q (Qes) 0.34
    * Mechanical Q (Qms) 9.4
    * Total Q (Qts) 0.35
    * Compliance Equivalent Volume (Vas) 0.62 ft³, 17.6 dm³
    * Surface Area of Cone (Sd) 30.8“², 199 cm²
    * Maximum Linear Excursion (Xmax)* 8.15 mm
    * Xdamage** 13.5 mm
    * Coil Inductance (Le) 0.55 mH
    * Diaphragm mass (Mmd) 22 g
    * Eta Zero 1.02 %

Notes

    * *Xmax = [(winding depth - magnetic gap depth) / 2] + (magnetic gap depth / 3)
    * **Maximum excursion before permanent damage
    * ***2 Hours Test According to AES 2-1984 Rev. 2003
    * ****Maximum power is defined as 3dB greater than nominal power