Speakers

Part Number	Description / PDF	Quantity
CLS0231MA3E-L152 CUI Devices	SPEAKR 32OHM 200MW TOP PORT 84DB	66
3968 Adafruit	SPEAKER - 40MM DIAMETER - 4 OHM	398
AS05008PR-2-R PUI Audio, Inc.	SPEAKER 8OHM 200MW TOP PORT 90DB	65
AS06004PS-R PUI Audio, Inc.	SPEAKER 4OHM 10W TOP PORT 99DB	11
AS09008PO-2-WR-R PUI Audio, Inc.	SPEAKER 8OHM 5W TOP PORT 86DB	3052
93012 MISCO	2" X 3" WIDE RANGE SPEAKER	200
PSR40N08AK Mallory Sonalert Products	SPEAKER 8OHM 1W TOP PORT 102DB	280
GBS-135F25AL02-04 Vifa (Peerless by Tymphany)	SPEAKER 4OHM 35W TOP PORT 85.3DB	282
AS05008MR-R PUI Audio, Inc.	SPEAKER 8OHM 200MW TOP PORT 80DB	17
CMS-15113-078S-67 CUI Devices	SPEAKER 15 X 11MM ENCLOSED	154
CMS-16093-078L100-67 CUI Devices	SPEAKER 16 X 9 MM ENCLOSED	0
RVA-90063-N12 Knowles	SPEAKER 96.3OHM 99.1DB	0
SP-CEL-SEVENTY80-16 TubeDepot	CELESTION SEVENTY 80 OHMS 16	0
SP-JEN-P12R-16 TubeDepot	JENSEN P12R OHMS 16	3
SP500408-1 DB Unlimited	DYNAMIC SPEAKER	495
CMS-151125-078L100A-67 CUI Devices	15 X 11 MM, RECTANGULAR FRAME, 0	397
FH-23469-000 Knowles	SPEAKER 564OHM SIDE PORT 96DB	0
40A5758BIP1J11M RDI Inc.	SPEAKER	50
BK-29725-000 Knowles	SPEAKER 640OHM SIDE PORT 122.5DB	0
CLS0281MAE-L152 CUI Devices	SPEAKER 8OHM 2W TOP PORT 87DB	8319

Speakers

1. Overview

Speakers are electroacoustic transducers that convert electrical audio signals into sound waves. As critical components in audio systems, they reproduce audible frequencies (typically 20Hz-20kHz) with controlled directivity and fidelity. Modern speaker technology integrates materials science, electromagnetism, and digital signal processing to deliver immersive audio experiences across consumer, professional, and industrial applications.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Dynamic Speakers	Electromagnetic driver with cone diaphragm, wide frequency response	Home theaters, PA systems
Electrostatic Speakers	Thin membrane with electrostatic field, excellent transient response	High-end audiophile systems
Planar Magnetic	Flat diaphragm with printed circuits, precise sound imaging	Studio monitoring, headphones
Coaxial Speakers	Multiple drivers on single axis, improved phase coherence	Car audio systems
Subwoofers	Specialized for low-frequency reproduction (20-200Hz)	Cinema sound systems

3. Structure and Components

Typical speaker systems consist of:

Transducer Elements: Voice coil, magnet assembly, diaphragm
Cabinet: Made from MDF, aluminum, or composite materials
Crossover Network: Passive/active filters directing frequencies to drivers
Connectors: Binding posts, TRS/XLR inputs, or wireless modules
Damping Materials: Acoustic foam for resonance control

4. Key Technical Specifications

Parameter	Description	Significance
Frequency Response	20Hz-20kHz 3dB	Defines audible range accuracy
Sensitivity	85-100 dB/W/m	Efficiency in sound production
Impedance	4 , 6 , 8 nominal	Matching with amplifiers
Power Handling	20-1000W RMS	Maximum safe operating level
THD	<0.5% at 1W	Audio signal purity

5. Application Areas

Consumer Electronics: Smart speakers (Amazon Echo), soundbars
Professional Audio: Studio monitors (Yamaha HS8), live sound systems
Automotive: Door speakers, active noise cancellation systems
Commercial: Distributed audio in retail spaces, emergency PA systems
Immersive Systems: Dolby Atmos home cinema setups

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Innovation
Bose	901 Direct/Reflecting Series	Omni-directional sound field
KEF	LS50 Wireless	Uni-Q concentric driver
Bowers & Wilkins	800 Series Diamond	Matrix internal bracing
Yamaha	HS8 Studio Monitor	Neutral sound reproduction
Harman Kardon	Invoke	Cortana integration

7. Selection Recommendations

Key selection criteria:

Match impedance/power handling with amplifier specifications
Room size vs. speaker sensitivity (e.g., 88dB+ for large spaces)
Crossover frequency alignment in multi-way systems
Material durability for environmental conditions (humidity, temperature)
Budget allocation: 30-50% of total audio system cost recommended

8. Industry Trends Analysis

Emerging developments include:

Integration of AI-powered room calibration (Dirac Live, Audyssey)
Multi-directional transducers for 3D audio in VR/AR applications
Development of micro-speakers using graphene diaphragms
Adoption of wireless mesh networks (WiSA technology) for speaker arrays
Growth of automotive audio systems with headrest-integrated transducers