Speakers

Part Number	Description / PDF	Quantity
SW360308-1 DB Unlimited	WATERPROOF DYNAMIC SPEAKER	248
RVA-90120-N01 Knowles	SPEAKER	0
SP520104-1 DB Unlimited	DYNAMIC SPEAKER	1376
T1220 TubeDepot	CELESTION G12M GRNBACK OHMS 8	4
AST-01532MR-R PUI Audio, Inc.	SPEAKR 32OHM 300MW TOP PORT 87DB	1701
SM280632-1 DB Unlimited	HIGH TEMP DYNAMIC SPEAKER	11
DX20BF00-08 Vifa (Peerless by Tymphany)	TWEETER 8OHM 60W TOP PORT 86.3DB	714
CMS-3520-18N CUI Devices	35 X 20 MM, RECTANGULAR FRAME, 1	992
AR027150MR-2-R PUI Audio, Inc.	SPEAKER 150OHM 15MW TOP PORT	5832
CMS-151135-076L100B-67 CUI Devices	15 X 11 MM, RECTANGULAR FRAME, 0	396
AS01808MS-SC18-WP-R PUI Audio, Inc.	SPEAKER .5W 8 OHM 88 DB 850 HZ	74
ES-23207-000 Knowles	SPEAKER SIDE PORT 107.5DB RECT	0
SP-3005Y Soberton, Inc.	SPEAKER, 87DB SENSITIVITY, 30MM	34
PHUA3030-049B-00-000 TDK Corporation	PIEZO PRODUCT FOR SOUND SPEAKER,	97
SP-3205-1 Soberton, Inc.	8 OHM, 1.5W, 90DB, 650HZ,32MM DI	269
SP-2040 Soberton, Inc.	SPEAKER 8OHM 1W TOP PORT 86DB	329
W 250 S - 4 OHM VISATON	HIFI LOW-MIDRANGE DRIVER	6
PLS-65F25AL04-04 Vifa (Peerless by Tymphany)	SPEAKER 4OHM 25W TOP PORT 82.9DB	0
FR 8 WP - 8 OHM (WHITE) VISATON	FR 8 WP - 8 OHM (WHITE)	105
GF0501M CUI Devices	SPEAKER 8OHM 250MW TOP PORT 86DB	1109

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