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Amplificator Public Address Dayton Audio MA455
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Descriere
The Dayton Audio MA455 Multi-Zone On-Wall Amplifier provides four channels of distributed audio functionality in a convenient design. Featuring four input channels, each of the MA455's channels is assignable to one of four zones for a multi-room audio system. The compact design, complete with a lockable security cover, makes the MA455 perfect for small businesses, stores, restaurants, bars, and office spaces.
Highlights
- Four input, four zone amplifier perfect for multi-room audio in offices, businesses, restaurants, and retail stores
- Compact and easy to install on-wall design with a lockable security cover to prevent tampering
- Individualized sonic character with built-in channel tone, volume, source, and EQ control for each input
- Features an internal media player with USB, SD, Bluetooth, and FM radio playback options that can be assigned to any combination of zones
- On board playback and IR remote control functionality provides total system control
Product details
Dayton Audio MA455 Multi-Zone On-Wall 4 Channel Amplifier
The Dayton Audio MA455 delivers multi-zone Class AB amplification in an easy-to-use, set-and-forget design. With each of the amp's four input channels assignable to one of four zones, the MA455 is ideal for small businesses, stores, or restaurants that need a multi-room audio system. In a compact and secure housing, the MA455 provides reliable audio performance and a convenient and straightforward interface.
Versatility Across Zones
Inputs: Delivering four input channels, the MA455 gives you the ability to connect multiple sources for custom multi-zone audio. Each input channel provides an RCA and 1/4 line input as well as individual bass and treble controls.
Streaming: In addition to flexible input options, the MA455 has a built-in media player that includes USB and SD MMC ports, Bluetooth, and FM radio. The media player can be assigned to any combination of the four output zones and features playback controls via the front panel and included IR remote control.
Outputs: The MA455 not only has versatile input options but also gives you flexibility in output options. Each zone has a mono RCA line out for use with an external amp and a barrier strip connector to connect directly to your speakers. Needing a total speaker impedance of at least 4 ohms per zone, the MA455 allows you to integrate into almost any existing speaker system.
Tailor Your Sound
Each input channel has an individual volume, bass, and treble controls, giving you control over the sound sources. Accessible via the included IR remote control, the MA455 also provides seven EQ presets including normal, rock, pop, classical, jazz, country, and bass. When using smaller speakers, the MA455 also has an 80 Hz high-pass filter for each zone output to restrict source bandwidth delivered to your speakers.
Secure, Compact Design
The all-in-one design of the MA455 delivers all of the functionality that you need for multi-zone audio, all housed in a compact on-wall form factor. With the streamlined design, the amplifier is ideal for set-and-forget installations. In addition to the compact size, the MA455 also features a lockable security cover so that you can keep your settings consistent without fear of tampering.
Simplify Your Install
Placing emphasis on simplicity and high performance, Dayton Audio has engineered the MA455 with ease of use in mind. The on-wall design and set-and-forget functionality are an installers dream that save time and money. Packed with all of the features you need, the MA455 is the complete all-in-one amplifier for multi-zone audio.
Flexibility and Function
With a vast array of input options, the MA455 can accept many audio sources such as Wi-Fi audio streaming devices, AV receivers, computers, handheld devices, and microphones. The ability to add a microphone via the 1/4 jack allows you to ensure that announcements are heard on the zones you want. This feature is ideal for paging mics for offices, bars, restaurants, and stores.
Delivering on All of Your Audio Requirement
The MA455 delivers all of the functionality and quality you would expect from Dayton Audio in a simplified design. With convenience and function at the forefront of design, the MA455 is perfect for use in restaurants, bars, small businesses, stores, office spaces, and other applications in need of easy-to-use multi-zone audio.
Special Features: Bluetooth,FM Tuner,Remote Control,SD Card Input,USB Connectivity.
Specifications: Amplifier type: Class AB · Power output (RMS): 4 x 55W @ 4 ohms, all channels driven · Speaker impedance: 4 ohms minimum per zone · Frequency response: 20-20,000 Hz · Channel input connections: Stereo RCA line, 1/4 line · Output connections: Mono RCA line / zone, barrier strip · Channel controls: Volume, zone selection, bass / treble, mic / line switch · Zone output controls: Volume, high-pass filter · Mic input sensitivity: -35 dB · Mic input impedance: 2 kohms · Line input sensitivity: -3 dB · Line input impedance: 20 kohms · THD: <0.1% @1 kHz, 0 dB · Mic SNR: <75 dB rated output · Line SNR: <80 dB rated output · Line output: +3 dB · Bass & treble control: ±12 dB · High-pass filter: 80 Hz · Media player: USB, SD, Bluetooth, FM radio · Media player file support: MP3, SBC, WAV, FLAC, APE, WMA · Media player controls: Play / pause / folder, repeat, track select · Media player sample rate: 16-bit/44.1 kHz · Bluetooth: Version 5.0 · Remote control functions: Power, stop, mute, repeat, EQ, play / pause, track select, volume, skip, media player mode · Power supply: 110/220 VAC, 50/60 Hz · Certifications: CE, RoHS · Includes: Amplifier, 4 x screws and anchors, IR remote control, IEC power cable · Weight: 18.7 lbs. · Dimensions: 18.7 H x 15.1 W x 3.7 D.
Rated power output (RMS)4 x 55W @ 4 ohms, all channels driven
Minimum load
Efficiency
Signal-to-noise ratio (SNR)
Distortion
Frequency response20-20,000 Hz
Gain
Input sensitivity-35 dB
Input impedance4 ohms minimum per zone / Mic input impedance: 2 kohms
Amplifier ClassificationClass AB
Circuit Topology
Speaker output channelsVolume, zone selection, bass / treble, mic / line switch
Input connection typeStereo RCA line, 1/4 line
Speaker output connection typeMono RCA line / zone, barrier strip
DSP function
BluetoothVersion 5.0
EQ Adjustment
Power Requirements110/220 VAC, 50/60 Hz
Power inlet connector
Current limit
Under/over voltage protection
Dimensions (L x W x H)18.7 H x 15.1 W x 3.7 D
Informații suplimentare
| Producător | |
|---|---|
| Disponibilitate | La Comandă – Produsul se aduce la comandă in 3-6 zile! |
| Unitate Pret | Bucata |
Explicatii in ceea ce priveste rodajul echipamentelor, cat si al cablurilor, asezarea optima a echipamentelor in camera de auditie, importanta acusticii camerei si nu in ultimul rand sistemul de alimentare a intregului echipament:
PENTRU BOXE:
- Pentru performante optime este necesara pozitionarea boxelor la o distanta de minim 30-40cm de peretele din spate pentru boxele cu bass-reflex in spate, pentru cele cu bass-reflex in fata, recomandam pozitionarea la o distanta de 10-20cm fata de peretele din spate, dar totodata la o distanta de cel putin 50cm fata de peretii laterali. Tineti cont de faptul ca orice piesa de mobilier din incapere, joaca rol de absorbtie fonica, dar si de difuzie fonica daca acestea din urma sunt din materiale ceramica sau oglinzi, geamuri sau alt material reflectorizant. In acest sens, gasiti pe blogul nostru, multiple articole care va pot ajuta
- Boxele vor ajunge sa functioneze in parametrii recomandati de producator, dupa minim 50 de ore (ideal 100 ore) de functionare la volum mediu. In aceasta perioada de timp, de “rodaj a boxelor”, sunetul va fi la inceput mai artificial, bass-ul nu va fi inca controlat, inaltele rigide iar vocile usor retinute, pe masura ce boxele vor functiona, veti remarca cum bas-ul devine mai controlat, mai prezent si mai voluminos, vocile si sunetele medii devin naturale si mai echilibrate, iar inaltele devin rafinate si detaliate. Exista boxe care necesita un „rodaj” mai amplu de minim 300 de ore mai ales in cazul celor care au difuzoare de kevlar, carbon sau alte materiale de acest tip. Boxele care se „rodeaza” cel mai repede sunt cele care au difuzoare de celuloza.
Imbunatatirea sunetului unui sistem audio stereo (Partea I)
Imbunatatirea sunetului unui sistem audio stereo – (Partea II)
PENTRU AMPLIFICATOARE, DAC-URI, PREAMPLIFICATOARE, RECEIVER STEREO & HOME CINEMA, SURSE DIGITALE AUDIO-VIDEO:
- Pentru performante optime este necesar „rodarea” echipamentului, In functie de complexitatea componentelor din aparatul dumneavoastra acesta poate dura intre 30-200 ore.
- Rodajul se face la volum minim, fiind astfel suficient faptul ca acesta este alimentat corect conform manualului de utilizare la 220-230 Volti si trece semnal audio sau video dupa caz prin el.
- Echipamentul supus „rodajului” va ajunge sa functioneze in parametrii recomandati de producator, dupa perioada mai sus mentionata. In aceasta perioada de timp, de “rodaj”, sunetul va fi la inceput ceva mai artificial, bass-ul nu va fi inca controlat, inaltele rigide iar vocile usor retinute, pe masura ce echipamentul va functiona, veti remarca cum bas-ul devine mai controlat, mai prezent si mai voluminos, vocile si sunetele medii devin naturale si mai echilibrate, iar inaltele devin rafinate si detaliate.
- In ceea ce priveste echipamentul video precum videoproiector, TV, media player, blueray player, necesita un "rodaj" de cel putin 50 de ore. Lipsa acestuia nu va poate oferi maxim de performanta. "Rodajul" se efectueaza prin simpla utilizare a acestuia, intr-un mod conform specificatiilor mentionate de producator.
PENTRU CABLURI:
- Pentru performante optime este necesara „rodarea” cablurilor, In functie de complexitatea conductorului folosit, cat si geometriei acestuia, „rodajul” poate dura intre 30-100 ore.
- Rodajul se face la volum minim, fiind astfel suficient faptul ca va trece semnal audio sau video dupa caz prin el.
- Cablul supus „rodajului” va ajunge sa functioneze in parametrii recomandati de producator, dupa perioada mai sus mentionata. In aceasta perioada de timp, de “rodaj”, sunetul va fi la inceput ceva mai artificial, pe masura ce cablul va functiona, veti remarca cum bas-ul devine mai controlat, mai prezent si mai voluminos, vocile si sunetele medii devin naturale si mai echilibrate, iar inaltele devin rafinate si detaliate.
Articole indrumatoare:
Tratamentul Acustic si Izolarea Fonica
Pentru un sistem echilibrat, trebuie tinut cont pe langa asezarea corecta a boxelor in incapere, al echipamentelor, sistemul de alimentare al acestora, tinand cont de instalatia electrica a locatiei.
Pentru detalii privind aceste aspecte de rodaj si nu numai, va rugam sa ne consultati!
DaytonAudio - Excelenta pe bani putini
Existamulte marci care reusesc sa propuna pietei produse de buna calitate la preturifoarte accesibile, dar raportul calitate/pret la care ajung inginerii de laDayton Audio depaseste imaginabilul. Cu peste 20 de ani de experienta indomeniu, Dayton Audio a devenit unul dintre varfurile de lance cu care Hi-Fi-ulieftin iese la atac in eterna disputa cu mai marii industriei.
Principiulde la care nu se face niciun fel de rabat este acela de a respecta cele treielemente considerate esentiale: inovatie, valoare, calitate. Misiunea propusaeste aceea de a calibra la milimetru raportul dintre tehnologie si arta, pentruobtinerea unor rezultate sonore imbatabile chiar si pentru clase de pret multsuperioare.
Cuo gama larga de componente audio in portofoliu (boxe, amplificatoare, sistememulticanal, subwoofere, sisteme de prindere etc), compania din Springboro,Ohio, este considerata una dintre cele mai bune pe segmentul de boxe, multedintre seriile purtand marca Dayton Audio primind notele maxime atat din parteajurnalistilor, cat si a utilizatorilor. Dupa cum spune chiar sloganul companiei - awesomely affordable - excelenta pe bani putini.
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