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Eminence CB158 8-Ohm 300W Bass Guitar Speaker

Eminence CB158 8-Ohm 300W Bass Guitar Speaker

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LEGEND CB158 Recommended for professional bass guitar applications in a sealed or vented enclosure.
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Product Details


Recommended for professional bass guitar applications in a sealed or vented enclosure.
  • Nominal Basket Diameter 15", 381mm
  • Nominal Impedance* 8 ohms
Power Rating**
  • Watts 300W
  • Music Program 600W
  • Resonance 34Hz
  • Usable Frequency Range 47Hz - 3kHz
  • Sensitivity*** 98.24dB
  • Magnet Weight 80 oz.
  • Gap Height 0.37", 9.53mm
  • Voice Coil Diameter 2.5", 63.5mm
  • Resonant Frequency (fs) 34Hz
  • DC Resistance (Re) 6.15
  • Coil Inductance (Le) 0.33mH
  • Mechanical Q (Qms) 5.9
  • Electromagnetic Q (Qes) 0.36
  • Total Q (Qts) 0.34
  • Compliance Equivalent Volume (Vas) 336.1 liters / 11.87 cu.ft.
  • Peak Diaphragm Displacement Volume (Vd) 411cc
  • Mechanical Compliance of Suspension (Cms) 0.31mm/N
  • BL Product (BL) 16 T-M
  • Diaphragm Mass Inc. Airload (MMs) 69.8 grams
  • Efficiency Bandwidth Product (EBP) 95
  • Maximum Linear Excursion (Xmax) 4.8mm
  • Surface Area of Cone (Sd) 856.3 cm2
  • Maximum Mechanical Limit (Xlim) 9.5mm
Recommended Enclosure Volume
  • Sealed Acceptable
  • Vented Acceptable
  • Driver Volume Displaced 239 / 3.92 liters
  • Overall Diameter 15.22", 386.5mm
  • Baffle Hole Diameter 13.99", 355.2mm
  • Front Sealing Gasket Fitted as standard
  • Rear Sealing Gasket Fitted as standard
  • Mounting Holes Diameter 0.28", 7.1mm
  • Mounting Holes B.C.D. 14.56", 369.9mm
  • Depth 6.5", 165mm
  • Net Weight 17.3 lbs, 7.9 kg
  • Shipping Weight 19.4 lbs, 8.8 kgs
  • Coil Construction Copper voice coil
  • Coil Former Polyimide former
  • Magnet Composition Ferrite magnet
  • Core Details Vented and extended core
  • Basket Materials Die-cast aluminum basket
  • Cone Composition Paper cone
  • Cone Edge Composition Cloth cone edge
  • Dust Cap Composition Solid composition paper dust cap
* Please consult for specifications of models with alternative impedances.
** Multiple units exceed published rating evaluated under EIA 426A noise source and test standard while in a free-air, nontemperature-controlled environment.
*** The average output across the usable frequency range when applying 1W/1m into the nominal impedance. ie: 2.83 V /8 ohms, 4 V /16 ohms. Eminence response curves are measured under the following conditions: All speakers are tested at 1W/1m using a variety of test set-ups for the appropriate impedance | LMS using 0.25" supplied microphone (software calibrated) mounted 1m from wall/baffle | 2 ft. x 2 ft. baffle is built into the wall with the speaker mounted flush against a steel ring for minimum diffraction | Hafler P1500 Trans-Nova amplifier | 2700 cu. ft. chamber with fiberglass on all six surfaces (three with custom-made wedges).
**** BETA 8CX, 10CX, 12CX and ACOUSTINATOR™ CX 2008 are coaxial speakers with tweeter sold separately. Published Usable Frequency response contingent upon use of APT 50 HF Driver.
***** Multiple units exceeded published rating evaluated under AES 500 and AES 800 noise sources and test standards while mounted on Eminence's TI-2000 horn in a nontemperature-controlled environment.
****** The average on axis output across the entire usable frequency range when applying 1W/1m into the nominal impedance while mounted on a Community SH 494 horn measured with: LMS (software calibrated) using a 0.25" [6.4mm] supplied microphone mounted 1m from horn mouth, Hafler P1500 Trans-Nova amplifier, 2700 cu.ft. chamber w/fiberglass on all six surfaces (three with custom made wedges). Plane-wave tube response and impedance curves measured with LMS on a 0.75" [19.1mm] diameter tube with adapter to allow for smooth transition to throat diameter and 1W/1m into nominal impedance. Prices and Specifications Subject to Change Without Notice.
Name Eminence CB158 8-Ohm 300W Bass Guitar Speaker
Brand Eminence
Condition New
Shipping Option Free Shipping to the Continental U.S.

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