Speakers

Part Number	Description / PDF	Quantity
ASE04508MR-LW150-WP-R PUI Audio, Inc.	SPEAKER ENCLOSURE 2 W 8 OHM 80 D	597
AS03808PR-R PUI Audio, Inc.	SPEAKER 8OHM 100MW TOP PORT 82DB	0
AR01232MS-SC12-WP-R PUI Audio, Inc.	RECEIVER 20 MW 32 OHM 116 DB 450	515
CMS-151125-076L100B-67 CUI Devices	15 X 11 MM, RECTANGULAR FRAME, 0	396
SP-JEN-C12N-16 TubeDepot	JENSEN C12N OHMS 16	0
28A1050-32B0428 RDI Inc.	28 MM SPEAKER	720
DTEC-30008-000 Knowles	SPEAKER 31.5OHM SIDE PORT RECT	100
PLS-P830985 Vifa (Peerless by Tymphany)	SPEAKER 4OHM 30W TOP PORT 82.3DB	1015
ED-26598-000 Knowles	SPEAKER 395OHM SIDE PORT 102.5DB	0
AS03608MR-LW100-R PUI Audio, Inc.	SPEAKER 1 W 8 OHM 91 DB 500 HZ	107
ASX04008-R PUI Audio, Inc.	EXCITER 8OHM 3W 83DB ROUND	23
93004 MISCO	2" KEVLAR WIDE RANGE SPEAKER	200
S350SA International Components Corp.	SQUARE SPEAKER, 8 OHM	600
K 50 WP - 16 OHM VISATON	K 50 WP - 16 OHM	260
AS07104PO-WR-R PUI Audio, Inc.	SPEAKER 4OHM 3W TOP PORT 86DB	513
SP-JEN-MOD12-70-8 TubeDepot	JENSEN MOD 1270 OHMS 8	7
DK 121 FE EB - 8 OHM VISATON	RE-ENTRANT HORN SPEAKER	76
AS05008PR-6-R PUI Audio, Inc.	SPEAKER 8OHM 400MW TOP PORT 85DB	88
RVA-90120-N07 Knowles	SPEAKER	0
PHF-23854-000 Knowles	SPEAKER 155OHM SIDE PORT 120DB	0

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