DOCSLIB.ORG

2021 Product Catalog

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

2021 Product Catalog Updated January 1st, 2021 Contents | 1 About Us 2 FCS™ Technology 3 FCS SingleCore™ 8 FCS DualCore™ 13 FCS Micro™ 15 FCS Bidirectional™ 18 Licensed Partners 19 Connect “ About Us | Resonado Labs is an American multinational technology company that designs and licenses proprietary speaker driver technologies to brands and manufacturers. The company’s core pursuit is to develop speaker driver architecture that achieves optimal form and function, without compromise. The company’s flagship product, Flat Core Speaker™ (FCS™) technology, is the first manifestation of that pursuit. FCS technology is a novel type of electrodynamic speaker driver engineered with a low depth structural profile and high diaphragm aspect ratio as an alternative to the conventional conical driver type to meet the ever-expanding demand for innovative, space-efficient product designs without experiencing tradeoffs in sound performance. Developed to be completely scalable, FCS technology is an audio component solution that can be implemented in products ranging from consumer electronics, to vehicles, to architectural spaces. Resonado Labs was founded at the University of Notre Dame and is now headquartered in Chicago, Illinois. 1 Advantages Flat Core Speaker™ (FCS™) technology is a novel type of electrodynamic speaker transducer engineered and owned by Resonado, Inc. FCS technology’s proprietary architecture consists of a low profile parallel bar magnet and planar voice coil array mounted perpendicularly to a flat, high aspect ratio diaphragm that exhibits pistonic behavior with wide acoustic dispersion. Designed to address the rising demand of increasingly thin, innovative, and space-efficient Form Factor Freedom Wide Dispersion Large Area of Supported product designs, FCS technology is the gold standard of scalable flat speaker driver architecture Diaphragm that can deliver a slim form factor without compromising sound performance. 2 FCS SingleCore™ is FCS technology in its most basic form with a dual parallel bar magnet and planar voice coil array mounted perpendicularly to a flat diaphragm. Samples currently available. 2 3 Neo Mid 5 Honeycomb Paper Driver Model No. RS-13535-TL4 SKU: NM5TL06PRHCV1 Version: Honeycomb Description Featuring a high-coercivity neodymium flat core magnet structure, a honeycomb paper diaphragm, and a high-temperature plastic frame, this is a premium midrange driver that provides a lightweight, space efficient, sustainable speaker solution. It can be built into a variety of applications ranging from consumer electronics, vehicles, and architecture. Samples currently available. Frequency & Impedance Graph Specifications Mechanical Drawings No. ITEM. DESCRIPTION 1 Power Rating 30W (nominal) / 50W (max) 2. Impedance 4 Ohms 3. Resonance Frequency (F0) 120 Hz ± 20% at 1.0V 4. Frequency Range F0 ~ 15KHz 5. Sound Pressure Level 84.73 @ 1W/1M a. Reference Efficiency 0.179% 6. Speaker Size 134 x 36.7 x 25.5(T) (mm) / 5.28 x 1.44 x 1.00(T) (in.) 7. DC Resistance (Re) 3.4 Ohms 8. Mechanical Q Factor (Qms) 1.198 9. Electrical Q Factor (Qes) 0 .477 10. Total Q Factor (Qts) 0.341 11. Equivalent Volume (Vas) 0.517L 12. Moving Mass (mm) 2.493 (g) 13. Mechanical Compliance of 0.708 (mm/N) Suspension (Cms) 14. Force Factor (Bl) 3.64 (Tm) 15. Effective Diaphragm Area (Sd) 23 (cm²) / 3.6 (in²) 16. Magnet Size 83 x 6 x 7(T) (mm) / 3.27 x 0.24 x 0.28(T) (in.) 17. Total Weight 117 (g) / 0.26 (lb.) 18. Voice Coil 90 x 20.7 x 0.18(T) (mm) / 3.54 x 0.81 x 0.007(T) (in.) 19. Operating Temperature -20°C to +70°C 20. Storage Temperature -40°C to +85°C 21. Rub & Buzz Test NOM. 11.0V / Sine Wave Enclosure Recommendations A. Allow at least 5 (mm) front and back of the Enclosure Volume Standards: Sealed Box Enclosure Volume Standards: Ported Box driver for the excursion .25(L) .8(L) Vent Diameter: 20(mm)/.8(in.) B. Diaphragm should be positioned to face Vent Length: 134(mm)/5.3(in.) listener(s) 4 Neo Mid 5 Carbon Fiber Model No. RS-13535-TL4 SKU: NM5TL06PRCFV2 Version: Carbon Fiber Description Featuring a high-coercivity neodymium flat core magnet structure, a carbon fiber diaphragm, and a high-temperature plastic frame, this is a premium midrange driver that provides a light- weight, space efficient, sustainable speaker solution. It can be built into a variety of applications ranging from consumer electronics, vehicles, and architecture. Samples currently available. Frequency & Impedance Graph Specifications Mechanical Drawings No. ITEM. DESCRIPTION 1. Power Rating 30W (nominal) / 50W (max) 2. Impedance 4 Ohms 3. Resonance Frequency (F0) 110 Hz ± 20% at 1.0V 4. Frequency Range F0 ~ 12KHz 5. Sound Pressure Level 85 dB @2.83/1M 6. Speaker Size 134 x 36.7 x 25.5(T) (mm) / 5.28 x 1.44 x 1.00(T) (in.) 7. DC Resistance (Re) 3.87 Ohms 8. Mechanical Q Factor (Qms) 1.24 9. Electrical Q Factor (Qes) 0.6 10. Total Q Factor (Qts) 0.407 11. Equivalent Volume (Vas) 0.46 (L) 12. Moving Mass (mm) 3.16 (g) 13. Mechanical Compliance of .66 (mm/N) Suspension (Cms) 14. Force Factor (Bl) 3.72 (Tm) 15. Effective Diaphragm Area (Sd) 23 (cm²) / 3.6 (in²) 16. Magnet Size 83 x 6 x 7(T) (mm) / 3.27 x 0.24 x 0.28(T) (in.) 17. Total Weight 117 (g) / 0.26 (lb.) 18. Voice Coil 90 x 20.7 x 0.18(T) (mm) / 3.54 x 0.81 x 0.007(T) (in.) 19. Operating Temperature -20°C to +70°C 20. Storage Temperature -40°C to +85°C 21. Rub & Buzz Test NOM. 11.0V / Sine Wave Enclosure Recommendations A. Allow at least 5 (mm) front and back of the Enclosure Volume Standards: Sealed Box Enclosure Volume Standards: Ported Box driver for the excursion .25(L) .8(L) Vent Diameter: 20(mm)/.8(in.) B. Diaphragm should be positioned to face Vent Length: 134(mm)/5.3(in.) listener(s) 4 5 3” x 1” Neo Fullrange Driver (Prototype) Description This Neo-Series 10 watt 4 ohm full range driver with a flat pulp paper diaphragm, high temperature plastic frame, neodymium bar magnets, and aluminum bobbin with a cop- per-wound voice coil is designed to be a high performance driver perfect for compact applications such as small to medium sized consumer electronics, tight spaces in vehi- cles, or in architectural applications. Target Specifications No. ITEM. DESCRIPTIONS 1 Power Rating 10 Watt RMS / 15 Watt Max 2 Impedance 4-Ohms 3 Frequency Response 190Hz - 20KHz 4 Sensitivity (dB @ 2.83V/1M): 82 dB 5 Dimensions 88 x 25 x 22 mm /3.47 x .98 x .86 in 6 Effective Diaphragm Area (Sd) 15 cm²/ 2.3 in² Availability Samples available early 2021. 6 Product Applications We imagine a world where our Resonado® audio technologies foster innovation across industries, enabling companies to design and build products that challenge traditional design expectations. Resonado Labs’ FCS Technology can be applied across many industries including consumer electronics, automotive, architectural spaces, aviation, and marine. The concept products shown below serve as basic application examples. Soundbars Satellite Speakers Mini Bluetooth Speakers Sleek, compact, FCS-Enabled™ soundbars for small spaces. FCS-Enabled satellite speakers with minimal Portable FCS-Enabled Bluetooth speakers easily fill a room with Minimal size, uncompromised performance. size and maximum acoustic coverage. premium acoustics and 360° sound thanks to ultra-wide dispersion. 3” x 1” Neo Fullrange Neo Mid 5 Neo Mid 5 6 7 FCS DualCore™ technology represents the FCS speaker driver structure comprised of dual voice coils bonded to one diaphragm. The resulting larger surface area of the diaphragm is ideal for woofers and subwoofers. Samples available early 2021. 8 8” x 4” Neo Woofer Driver (Prototype) Description Resonado Labs’ flagship woofer is the world’s first and only woofer built with FCS technology. This driver packs a punch with a depth of only 44 mm, thanks to Resonado Labs’ proprietary FCS DualCore technology. FCS DualCore features a double voice coil design that maximizes supported driver surface area without sacrificing FCS technology’s signature thin profile. Target Specifications No. ITEM. DESCRIPTIONS 1 Power Rating 60 Watt RMS / 120 Watt Max 2 Impedance 4-Ohms 3 Frequency Response 43Hz to 2000Hz 4 Sensitivity (dB @ 2.83V/1M): 85 dB 5 Dimensions 210 x 110 x 44 mm / 8.3 x 4.3 x 1.7 in 6 Effective Diaphragm Area (Sd) 130.2 cm²/ 20.2 in² Availability Samples available early 2021. 8 9 12” x 5” Neo Subwoofer Driver (Prototype) Description A Neo-Series subwoofer built with FCS DualCore technology is coming soon. FCS DualCore features a double voice coil design that maximizes supported driver surface area without sacrificing FCS technology’s signature thin profile. Target Specifications No. ITEM. DESCRIPTIONS 1 Power Rating 200 Watt RMS / 300 Watt Max 2 Impedance 4-Ohms 3 Frequency Response 30Hz to 300Hz 4 Sensitivity (dB @ 2.83V/1M): 89 dB 5 Dimensions 305 x 127 x 50 mm / 12 x 5 x 2 in 6 Effective Diaphragm Area (Sd) 350 cm²/ 54.3 in² Availability Samples available mid 2021. 10 Product Applications We imagine a world where our Resonado® audio technologies foster innovation across industries, enabling companies to design and build products that challenge traditional design expectations. Resonado Labs’ FCS Technology can be applied across many industries including consumer electronics, automotive, architectural spaces, aviation, and marine. The concept products shown below serve as basic application examples. Bluetooth Speakers Sound Towers Powered Subwoofers An FCS-Enabled smart speaker concept featuring 2 Neo Mid 5 drivers FCS-Enabled sound towers featuring 5 Neo Mid 5 drivers each for a A powered subwoofer thin enough to fit under furniture and an 8 x 4” Neo Woofer driver could be the perfect way to deliver deep sleek, modern design in tandem with an FCS DualCore™ Neo Woofer for a subtle, yet powerful low frequency sound experience.
Recommended publications
  • White Paper Utopia & Elear White Paper

    White Paper Utopia & Elear White Paper

    UTOPIA & ELEAR WHITE PAPER UTOPIA & ELEAR WHITE PAPER Focal’s DNA is, by essence, the com- bination of the absolute acoustic quest, total control of the manufacturing process and the “je ne sais quoi” brought by the com- pany’s designers into every single product. The extreme care paid to each detail, from the early stages of R&D, to utilizing the latest manufactu- ring techniques and thorough quality control sums up our philosophy. Since the very beginning, Focal has brought major innovations that pushed the limits of loudspeakers and their performance, thanks to the flagship pro- jects within the brand such as, Utopia III, Utopia Be car audio kits or SM9 studio monitors. During the development of these flagship products in each of their respective divisions, the amount of time and resources devoted to the research phase far ou- tweighed the actual production. These products were “born” thanks to this approach in order to reach the ultimate acoustic truth. > Grande Utopia EM > SM9 > Ultima kit UTOPIA & ELEAR WHITE PAPER However, to keep on innovating and to reach such a target requires a different way of thinking. We needed to be able to capitalize on our core know-how and past experiences, but also to challenge traditional thinking of what is possible and what could be achieved. This strategy resulted in the creation of numerous > "W" composite exclusive technology, such as “W” composite sandwich sandwich cone cones or IAL tweeters that brought major improvements in term of acoustic translation of the original audio signal. Before starting on the Focal flagship headphone project, we already had the relevant background with our in-house knowledge, thanks to the well-received Spirit headphone line.
  • Subwoofer Arrays: a Practical Guide

    Subwoofer Arrays: a Practical Guide

    Subwoofer Arrays A Practical Guide VVVeVeeerrrrssssiiiioooonnnn 111 EEElEllleeeeccccttttrrrroooo----VVVVooooiiiicccceeee,,,, BBBuBuuurrrrnnnnssssvvvviiiilllllleeee,,,, MMMiMiiinnnnnneeeessssoooottttaaaa,,,, UUUSUSSSAAAA AAApAppprrrriiiillll,,,, 22202000009999 © Bosch Security Systems Inc. Subwoofer Arrays A Practical Guide Jeff Berryman Rev. 1 / June 7, 2010 TABLE OF CONTENTS 1. Introduction .......................................................................................................................................................1 2. Acoustical Concepts.......................................................................................................................................2 2.1. Wavelength ..........................................................................................................................................2 2.2. Basic Directivity Rule .........................................................................................................................2 2.3. Horizontal-Vertical Independence...................................................................................................3 2.4. Multiple Sources and Lobing ...........................................................................................................3 2.5. Beamforming........................................................................................................................................5 3. Gain Shading....................................................................................................................................................6
  • Rsxpassive Loudspeakers

    Rsxpassive Loudspeakers

    RSX PASSIVE LOUDSPEAKERS RSX110 RSX112 RSX118S RSX115 RSX215 OWNER'S MANUAL Copyright 2013, Samson Technologies Corp. v2.2 Samson Technologies Corp. 45 Gilpin Avenue Hauppauge, New York 11788-8816 Phone: 1-800-3-SAMSON (1-800-372-6766) Fax: 631-784-2201 www.samsontech.com Speakon® is a registered trademark of Neutrik AG Safety Instructions WARNING: To reduce the risk of fire or electric shock, do not expose this unit to rain or mois- ture. To reduce the hazard of electrical shock, do not remove cover or back. No user serviceable parts inside. Please refer all servicing to qualified personnel. The lightning flash with an arrow- head symbol within an equilateral triangle, is intended to alert the user to the presence of unin- sulated "dangerous voltage" within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product. Important Safety Instructions 1. Please read all instructions before operating the unit. 2. Keep these instructions for future reference. 3. Please heed all safety warnings. 4. Follow manufacturers instructions. 5. Do not use this unit near water or moisture. 6. Clean only with a damp cloth. 7. Do not block any of the ventilation openings. Install in accordance with the manufacturers instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9. Do not defeat the safety purpose of the polarized or grounding-type plug.
  • Loudspeaker Nonlinearities. Causes, Parameters, Symptoms

    Loudspeaker Nonlinearities. Causes, Parameters, Symptoms

    Loudspeaker Nonlinearities – Causes, Parameters, Symptoms Wolfgang Klippel, Klippel GmbH, Dresden, Germany, [email protected] ABSTRACT This paper addresses the relationship between nonlinear distortion measurements and nonlinearities which are the physical causes for signal distortion in loudspeakers, headphones, micro-speakers and other transducers. Using simulation techniques characteristic symptoms are identified for each nonlinearity and presented systematically in a guide for loudspeaker diagnostics. This information is important for understanding the implications of nonlinear parameters and for performing measurements which describe the loudspeaker more comprehensively. The practical application of the new techniques are demonstrated on three different loudspeakers. 1. INTRODUCTION Loudspeakers and other kinds of actuators which produce sound or vibrations behave differently at small and high amplitudes. The dependency on the amplitude is an indication of nonlinearities inherent in the system. A second nonlinear effect is the generation of additional spectral components which are not in the exciting stimulus. Those components are generally integer multiples of the applied fundamentals and thus labeled as harmonic and intermodulation distortion. The results of those distortion measurements highly depends on the properties of the stimulus such as the selected frequency, amplitude and phase of the exciting tones. The results do not completely describe the large signal performance but should be understood as symptoms. This is the major
  • Sound Reinforcement

    Sound Reinforcement

    A Shure Educational Publication Microphone Techniques for Live Sound Reinforcement echniques T Mic SoundReinforcement Index MicTechniques for Live Sound Reinforcement INTRODUCTION . 4 MICROPHONE CHARACTERISTICS . 4 MUSICAL INSTRUMENT CHARACTERISTICS . 11 ACOUSTIC CHARACTERISTICS . 14 MICROPHONE PLACEMENT . 22 STEREO MICROPHONE TECHNIQUES . 32 MICROPHONE SELECTION GUIDE . 34 GLOSSARY . 35 3 MicTechniques for Live Sound Reinforcement Introduction ties of the microphone. The two most common types are Dynamic and Condenser. Microphone techniques (the selection and place- ment of microphones) have a major influence on Dynamic microphones employ a diaphragm/ Reinforcement the audio quality of a sound reinforcement sys- voice coil/magnet assembly which forms a tem. For reinforcement of musical instruments, miniature sound-driven electrical generator. there are several main objectives of microphone Sound waves strike a thin plastic membrane techniques: to maximize pick-up of suitable (diaphragm) which vibrates in response. A sound from the desired instrument, to minimize small coil of wire (voice coil) is attached to the pick-up of undesired sound from instruments or rear of the diaphragm and vibrates with it. The other sound sources, and to provide sufficient voice coil itself is surrounded by a magnetic field gain-before-feedback. “Suitable” sound from the created by a small permanent magnet. It is the desired instrument may mean either the natural motion of the voice coil in this magnetic field sound of the instrument or some particular which generates the electrical signal correspond- sound quality which is appropriate for the appli- ing to the sound picked up by a dynamic micro- cation. “Undesired” sound may mean the direct phone. or ambient sound from other nearby instruments Sound or just stage and background noise.
  • Public Address System 1. Microphone

    Public Address System 1. Microphone

    Public Address System A system of microphones, amplifiers, and loudspeakers used to amplify speech or music in a large building or at an outdoor gathering. 1. Microphone A microphone, colloquially nicknamed mic is an acoustic-to-electric transducer or sensor that converts sound into an electrical signal. Electromagnetic transducers facilitate the conversion of acoustic signals into electrical signals. Microphones are used in many applications such as telephones, hearing aids, public address systems for concert halls and public events, motion picture production, live and recorded audio engineering, two-way radios, megaphones, radio and television broadcasting, and in computers for recording voice, speech recognition, VoIP, and for non-acoustic purposes such as ultrasonic checking or knock sensors. Most microphones today use electromagnetic induction (dynamic microphones), capacitance change (condenser microphones) or piezoelectricity (piezoelectric microphones) to produce an electrical signal from air pressure variations. Microphones typically need to be connected to a preamplifier before the signal can be amplified with an audio power amplifier and a speaker or recorded. The sensitive transducer element of a microphone is called its element or capsule. Except in thermophone based microphones, sound is first converted to mechanical motion by means of a diaphragm, the motion of which is then converted to an electrical signal. A complete microphone also includes a housing, some means of bringing the signal from the element to other equipment, and often an electronic circuit to adapt the output of the capsule to the equipment being driven. A wireless microphone contains a radio transmitter. Moving-coil microphones use the same dynamic principle as in a loudspeaker, only reversed.
  • The M&K Sound Technology Handbook

    The M&K Sound Technology Handbook

    ® ® The M&K Sound Technology Handbook www.mksound.com Rev. 2 · 2016 Rev. Contents TThe Legend Lives On . .3 The Vision and the Mission. 4 M&K In The Professional Audio World . .5 The M&K Sound Advantage. 6 M&K Sound History. 9 Satellite-Subwoofer Concept. 10 Satellite Advantages . 11 Phase-Focused Crossovers . 12 Satellite Cabinets. 13 Exclusive Tripole Surrounds . 14 MX Subwoofer Technology . 17 Sealed Box vs. Vented . 19 Push-Pull Deep Bass. .20 No Servo Feedback. .22 Installing M&K Sound Subwoofers . 23 Deep Bass Subwoofer Drivers and Amplifiers. 25 M&K Sound Subwoofer Q and Low-Pass Filters. .26 Using Multiple Subwoofers . 27 Home Cinema Setup . 28 2 The Legend Lives On Aimed at music recording, post production and broadcast applications, M&K Sound Professional loudspeaker systems have been used by the world’s leading recording engineers, mixers, sound designers, editors and music composers for more than 35 years. M&K Sound Professional speakers are designed as essential creative tools for mixing engineers and artists to let them do their job easier, faster and better with no unpleasant surprises along the way to a perfect mix that will translate seamlessly between studio, cinema and home. Created for state-of-the-art recording/mixing studios, M&K Sound Professional Systems are ideal for a wide range of demanding and critical audio applications, including near-field music composition, recording and mixing, sound design, broadcast monitoring, voice-over booths and quality control. Throughout our storied history, M&K Sound’s uncompromising products have consistently broken down barriers between pro and consumer audio with loudspeakers that shed clear, natural daylight on any recording, regardless of source (analog or digital), format (two-channel or multi-channel), playback environment (studio or domestic) or application (movies or music).
  • Live Sound – Pa Systems and Powered Mixers

    Live Sound – Pa Systems and Powered Mixers

    order/info: 1·800·426·8434 • www.bswusa.com Yamaha StagePAS 500-Watt PA Yamaha’s StagePAS 500 is a lightweight, easy- to-use 500-Watt PA system boasting a pair of high-performance 2-way passive speakers and a built-in 10-channel mixer powered by dual 250-watt amps. It sets up in seconds, while offering excellent sound quality and versatility with plenty of advanced features to make the most of your performance. The versatile mixer has its own compartment in one of the speakers and can be detached for extra flexibility. It gives you 10 input channels in all: four mono microphone/line inputs and three stereo line inputs. The additional stereo channel can used for either a stereo or mono source. In addition to the main speaker outputs the mixer has line outputs that can be used to connect additional powered speakers for monitoring, and to send the mixer's output to a recording device. It also boasts an auto limiter to prevent overload damage to power amplifier and speakers and an LED output level meter. It comes with 2 speaker cables so you can use it right out of the box. FeatURES: • Complete 500-watt PA system: weighs less than 53 lbs. • 2 top quality speakers with 10" LF and 1" HF drivers • Detachable 10-channel powered mixer STAGEPAS300PKG • 4 mono mic/line inputs (XLR and 1/4") with switchable phantom power; 3 stereo line inputs (RCA and 1/4") • Main speaker, Monitor and Record outputs Yamaha StagePAS 300-Watt PA System • 2-band EQ on every channel; Limiting/Compression on channels 1 and 2; Reverb on channels 1-4 Yamaha’s StagePAS 300 PA system has the power to go with you no matter where your gig takes you.
  • Large Diaphragm Condenser Microphones

    Large Diaphragm Condenser Microphones

    PRO AUDIO LARGE DIAPHRAGM CONDENSER MICROPHONES Large Diaphragm Condenser Microphones A go-to mic choice for tracking vocals, voice overs, string instruments such as acoustic guitars and violins, percussion, and more, B&H carries a wide variety of large diaphragm condensers to suit a variety of needs and budgets. Available selections provide polar patterns ranging from supercardioid (very narrow pick up path) to omnidirectional (360 degree pick up), while many can handle SPL levels as high as 150dB for use on louder sound sources. Many selections include stands, cases, and cables, and come in a wide variety of finishes. Brand AKG Aston Audio-Technica Behringer Blue CAD Lewitt MXL Microtech Gefell Polsen Model P420 C 414 XLII P220 Origin AT2020 AT2035 C-1 BlueBird SL Spark SL E100S LCT-440-Pure V67G M 930 PCR-65 Diaphragm Size 1” 1” 1” 1” .63” .96” .63" — — 1” 1” 1.26” 1” 1” Polar Pattern Multi Multi Cardioid Cardioid Cardioid Cardioid Cardioid Cardioid Cardioid Super Cardioid Cardioid Cardioid Cardioid Cardioid Freq Response 20Hz-20kHz 20Hz-20kHz 20Hz-20kHz 20Hz-20kHz 20Hz-20kHz 20Hz-20kHz 40Hz-20kHz 20Hz-20kHz 20Hz-20kHz 40Hz-18kHz 20Hz-20kHz 30Hz-20kHz 40Hz-18kHz 20Hz-20kHz Dynamic Range — 134dB — — 124dB 136dB — 126dB 119dB — — — 135dB — S/N Ratio 79dB 88dB 78dB 76dB 74dB 82dB — 82dB 73dB — 87dB 74dB — — Pad -20dB -6db,-12dB,-18dB -20dB -10dB N -10dB — -20dB -20dB -10db — N N N HP/LC Filter YYYYNYNYYYNNNN Max SPL 155dB 140dB 155dB 127dB 144dB 148dB 136dB 138dB 136dB 150dB 140dB 130dB — 125dB Included Acc. SM, HC SM, HC, PF SM, CC —
  • Public Address System

    Public Address System

    Hkkjr ljdkj &GOVERNMENT OF INDIA jsy ea=ky;& MINISTRY OF RAILWAYS ¼dk;kZy;hu iz;ksx gsrq½& (For official use only) MAINTENANCE HANDBOOK ON PUBLIC ADDRESS SYSTEM CAMTECH/S/PROJ/12‐13/HB‐PA/1.0 December 2012 MAHARAJPUR, GWALIOR – 474 005 CONTENTS Sr. No. Description Page No. 1. Introduction 1 2. Acoustic 2 3. Microphones 7 4. Loudspeaker 16 5. Amplifier 24 6. Audio Mixer Pre-Amplifier 37 7. Coference System 40 8. Maintenance 47 9. Wiring and Cabling 49 10. Earthing and other Safety Precautions 51 11. PA System at Railway Stations 53 12. Fault Finding 55 13. Precautions 58 ISSUE OF CORRECTION SLIPS The correction slips to be issued in future for this handbook will be numbered as follows: CAMTECH/S/PROJ/2012-13/HB-PA/1.0/C.S.# XX date-------------------------------- Where “XX” is the serial number of the concerned correction slip (starting from 01 onwards) CORRECTION SLIPS ISSUED Sr. No. of Date of Page No. and Item no. Remarks Corr. Slip issue modified CAMTECH/S/PROJ/12‐13/HB‐PA/1.0 1 PUBLIC ADDRESS SYSTEM 1. Introduction Public Address System (PA system) is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public, for example for announcements of movements at large and noisy air and rail terminals. The simplest PA system consist of a microphone, an amplifier, and one or more loudspeakers is shown in fig 1. A sound source such as compact disc player or radio may be connected to a PA system so that music can be played through the system.
  • The Legend of EL PIPE-O

    The Legend of EL PIPE-O

    The Legend of EL PIPE-O By Kent English and Nelson Pass, (c) 2002 Pass Labs Intro is used to damp out this uncontrolled motion and turn it to getting a little more bass out of the speaker. The two Most woofers just don’t quite do the lowest octave. You most popular approaches are the bass-reflex enclosure read the specs that say “usable response: 20 Hz – 20 and the transmission line. KHz” and you know that the 20 Hz part of it is wildly optimistic. Achieving very low frequencies at reasonable The bass-reflex enclosure has the woofer mounted in a power levels is not an easy job; the acoustic impedance box that has a specific internal volume and an opening experienced by a speaker cone declines as the inverse to the outside. Any box with an opening has its own of the square of the frequency. As a practical matter, acoustic resonance, known as Helmholtz resonance, woofers and their enclosures need to be very large to which you experience when you blow into the opening properly reproduce the lowest octave. Even when of a beer bottle. Varying the volume of the box or you compensate with frequency equalization and more the size of the opening (called the port) adjusts the amplifier power, the performance suffers as you reach frequency of resonance, and you can tune it to the same the excursion and power handling limitations of a small frequency as the resonance of the woofer. cone in a small box. When the box’s resonance is the same as the woofer’s Let’s face it.
  • The Study on the Woofer Speaker Characteristics Due to Design Parameters

    The Study on the Woofer Speaker Characteristics Due to Design Parameters

    The study on the woofer speaker characteristics due to design parameters Byoung-sam Kim1; Jin-young Park2; Xu Yang3; Tae-keun Lee4; Hongtu Sun5 1 Wonkwang University, South Korea 2 Wonkwang University, South Korea 3 Wonkwang University, South Korea 4 Daeduk College, South Korea 5 Ludong University, China ABSTRACT In the vehicle speaker, because the sound characteristics are changed by the space of vehicle which mount the speaker, the speaker elements should be determined according to sound field. In this study, the nonlinear characteristics, the frequency response and the sound pressure for the same size speakers which is adapted to domestic vehicle model are investigated. The vehicle model is classified to semi-midsize, midsized, full size vehicle in order to change the vehicle space. As a result, we can investigate the differences of the force factor and the stiffness of suspension system for speaker. According to the change of the speaker characteristics, the sound pressure is changed, also. In the future, these data will be used to investigate the correlation between the sound quality and measurement data. Keywords: Woofer speaker, Force factor, Stiffness of suspension system, Mechanical mass of moving system, Resonant frequency I-INCE Classification of Subjects Number(s): 76.9 1. INTRODUCTION The speaker is conversion device from electrical energy to acoustical energy like a sound. The speaker sound level is appear differently depending on strength of electric current and signal frequency, loudness is determined to depend on displacement of diaphragm inside the speaker. Speaker can be classified as a Cone type, Dome type, Flat type, Ribbon type, Horn type, Micro speaker and etc.