EasyManua.ls Logo

EarthQuake EQ88 User Manual

EarthQuake EQ88
1 page
Page #1 background imageLoading...
Page #1 background image
Specification
Nominal Basket Diameter
Nominal Impedance
Power Rating
Resonance
Usable Frequency Range
Sensitivity
Magnet Weight
Voice Coil Diameter
8-1/4", 209.5mm
8-Ohms
80 Watts
86.6Hz
86.6Hz - 10kHz
94.1 dB
42.2 oz.
2", 50.8mm
Thiele & Small Parameters
Resonant Frequency (Fo)
DC resistance (Re)
Coil Inductance (Le)
Mechanical Q (Qms)
Electromagnetic Q (Qes)
Total Q (Qts)
Compliance Equivalent Volume (Vas)
Mechanical Compliance of Suspension (Cms)
BL Product (BL)
Diaphragm Mass (Mmd)
Maximum Linear Excursion (Xmax)
Surface Area of Cone (Sd)
86.6Hz ±15%
7.2 Ohms
463.207m mH
8.067
0.454
0.429
11.696 Ltr / 0.41 cu.ft.
175.843m mm/N
12.884 T-M
17.399 grams
3.2 mm
216.424 sqM
Mounting Information
Recommended Enclosure Volume
Sealed
Vented
Overall Diameter
Cut Out Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Depth
liters/ ft3
liters/ ft3
8-1/4", 209.5mm
7 1/16", 180mm
fitted as standard
fitted as standard
3-4/8", 88mm
Materials of Construction
Copper voice coil
Polyimide former
Ferrite magnet
Vented and extended core
Stamped steel basket
Paper cone
Cloth surround
Solid composition paper dust cap
Earthquake EQ88 Pro Audio Series
8-5 x 9mm
Sound That Will Move You
Earthquake Sound Corporation
2727 McCone Avenue • Hayward, CA 94545 • phone: 800-576-7944
fax: 510-732-1095 • www.earthquakesound.com
SPL vs Freq
20 Hz 50 100 200 500 1K 2K 5K 10K 20K
dBSPL
20
30
40
50
60
70
80
90
100
Ohm
7
8
9
10
20
30
40
50
60
70
80
90
100
200
Question and Answer IconNeed help?

Do you have a question about the EarthQuake EQ88 and is the answer not in the manual?

EarthQuake EQ88 Specifications

General IconGeneral
BrandEarthQuake
ModelEQ88
CategorySpeakers
LanguageEnglish

Summary

Speaker Specifications

Nominal Basket Diameter

Speaker basket size, diameter in inches and mm.

Nominal Impedance

Electrical resistance of the speaker coil in Ohms.

Power Rating

Maximum continuous power handling capacity in Watts.

Resonance Frequency

Fundamental resonant frequency of the speaker (Fo) in Hz.

Usable Frequency Range

Frequency spectrum the speaker can reproduce, from low to high.

Sensitivity

Sound output level (dB) for a given input power and distance.

Magnet Weight

Weight of the magnet assembly in ounces (oz).

Voice Coil Diameter

Diameter of the speaker's moving voice coil in inches and mm.

Thiele-Small Parameters

Resonant Frequency (Fo)

Free-air resonance frequency, indicating bass response.

DC Resistance (Re)

Electrical resistance of the voice coil winding.

Coil Inductance (Le)

Electrical inductance of the voice coil.

Mechanical Q (Qms)

Measure of mechanical damping in the suspension system.

Electromagnetic Q (Qes)

Measure of electrical damping provided by the motor.

Total Q (Qts)

Overall damping factor, combining Qms and Qes.

Compliance Equivalent Volume (Vas)

Volume of air equal in compliance to the speaker suspension.

Mechanical Compliance of Suspension (Cms)

Measure of the suspension's flexibility or stiffness.

BL Product (BL)

Motor strength factor, indicating force per ampere.

Diaphragm Mass (Mmd)

Mass of the speaker cone and surround.

Maximum Linear Excursion (Xmax)

Maximum cone displacement before significant distortion.

Surface Area of Cone (Sd)

Effective radiating surface area of the speaker cone.

Mounting Information

Recommended Enclosure Volume

Suggested cabinet volumes for sealed and vented designs.

Overall Diameter

Total external diameter of the speaker unit.

Cut Out Diameter

Required diameter of the mounting hole in the baffle.

Front Sealing Gasket

Gasket provided for a tight seal at the front mounting surface.

Rear Sealing Gasket

Gasket provided for a tight seal at the rear enclosure.

Mounting Holes Diameter

Specifications for the speaker's mounting screw holes.

Mounting Depth

Required depth for installation behind the mounting surface.

Materials of Construction

Copper Voice Coil

Material used for the voice coil winding.

Polyimide Former

Material of the voice coil's support structure.

Ferrite Magnet

Type of magnetic material used in the speaker's motor.

Vented and Extended Core

Design feature for improved cooling and airflow.

Stamped Steel Basket

Construction material of the speaker's chassis/frame.

Paper Cone

Material of the speaker's diaphragm for sound projection.

Cloth Surround

Material of the speaker's suspension system.

Solid Composition Paper Dust Cap

Material of the speaker's dust cover.

Related product manuals