Difuzor Dayton Audio UM18-22
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Descriere
Dayton Audio’s Ultimax Series DVC subwoofers are purpose-built to move tons of air and create clean, articulate, fast bass. Experience the apex of subwoofer design!
Highlights
· 18 design for enormous air movement
· Over 2 of total cone travel!
· 1000 watts RMS power handling
· Dual mirror-imaged linear spiders ensure distortion-free excursion
· Dual 2 ohm, 2-layer copper voice coils
· Large vented pole piece and under-spider venting
Product Details
Dayton Audio UM18-22 18 Ultimax DVC Subwoofer 2 ohms Per Coil
If you want outrageous amounts of bass, you gotta move some air
With the UM18-22 Ultimax 18 driver, Dayton Audio has taken everything about the respected Dayton Audio Ultimax subwoofers to the extreme! Providing over 2 of peak-to-peak excursion, the Ultimax 18 sweeps over six liters of air with each stroke! Truly not for the faint of heart!
An audio bulldozer with the finesse of a sports car
Like the rest of the Ultimax series, the UM18-22 plays it clean, low, fast, and LOUD. Designed to excel in either sealed or vented enclosures, it features an ultra-powerful triple stack of high-grade ferrite ceramic magnets for ultra-high force and exceptional control, plus dual aluminum shorting rings above and below the magnetic gap for minimized inductance, faster-sounding bass response, and perfect magnetic symmetry. The voice coil diameter has been increased to 3 inches, for even more thermal dissipation area that allows the 18 model to withstand 1,000 watts of punishing bass power continuously without thermal fatigue. Dual 2-ohm voice coils allow for stereo 2 ohm operation, or mono operation in 1 ohm or 4 ohm configurations, for true design flexibility.
Built to produce massive low frequency output and keep on doing it
The huge 18 Nomex honeycomb composite curved cone features woven fiberglass outer skins for the ultimate in rigidity and resistance to damage, while the tall-boy rubber surround with integral gasket supports extreme stroke with linearity and durability. Dual 8 spiders are mirror-imaged, to keep the 2 of excursion completely linear and provide cancellation of distortion due to compliance asymmetry, for ultra-low mechanical distortion even at the outer limits of travel. And it's all held in perfect alignment by a rigid cast aluminium 12-spoke frame, for stability in any mounting position.
Put your home's construction to the test with the phenomenal bass output of this 18 beast!
Car audio recommended alignments:
· Sealed 3 cubic ft. (net internal, not including driver) for an f3 of 32 Hz with a Qtc of .78
· Vented 4 cubic ft. (net internal, not including driver or vent ) tuned to 22 Hz, with 2 flared vents 4 diameter by 32 long, for an f3 of 24 Hz
Home theater/stereo recommended alignments
· Sealed (home theater/music): 4 cubic ft. (net internal, not including driver) for an f3 of 31 Hz, f10 of 18 Hz with a Qtc of 0.72
· Sealed (music): 7 cubic ft. (net internal, not including driver) for an f3 of 31 Hz, f10 of 15.8 Hz with a Qtc of 0.62
· Vented (home theater): 8 cubic ft. (net internal, not including driver or vent) tuned to 20 Hz, with 3 flared vents 4 diameter by 28.5 long, for an f3 of 18 Hz
· Vented (infra-sub): 12 cubic ft. (net internal, not including driver or vent) tuned to 15.5 Hz, with 3 flared vents 4 diameter by 32 long, for an f3 of 15 Hz
· Infinite Baffle: Approved (reaction force cancellation recommended)
Note: All specifications are derived with voice coils wired in series.
Woofer SeriesUltimax Series
Woofer TypeSubwoofer
Nominal Diameter18
Power Handling (RMS)1,000 watts
Power Handling (max)2,000 watts
Continuous Program Power
Impedance4 ohms
Sensitivity88.6 dB @ 2.83V/1m
Frequency Response19 – 500 Hz
Voice Coil Diameter75 mm
Magnet Weight
DC Resistance (Re)4.4 ohms
Voice Coil Inductance (Le)2.22 mH @ 1 kHz
Resonant Frequency (Fs)19.5 Hz
Mechanical Q (Qms)3.82
Electromagnetic Q (Qes)0.62
Total Q (Qts)0.53
Diaphragm Mass Inc. Airload (Mms)655g
Moving Mass Of Diaphragm (Mmd)
Mechanical Compliance of Suspension (Cms)0.1 mm/N
Surface Area of Cone (Sd)1,219 cm²
Volume of Displacement (Vd)2,681.8 cm³
BL Product (BL)23.8 Tm
Compliance Equivalent Volume (Vas)212 liters
Maximum Linear Excursion (Xmax)22 mm
Driver's Mechanical Losses (Rms)
Cone / Diaphragm MaterialNomex Cone
Surround MaterialRubber
Voice Coil Wire Material
Voice Coil Former
Dual Voice CoilYes
Basket / Frame MaterialCast Aluminum
Magnet MaterialFerrite
Shielded
Overall Outs
Informații suplimentare
Producător | |
---|---|
Disponibilitate | La Comandă – Produsul se aduce la comandă in 3-6 zile! |
Tip Difuzor | |
Unitate Pret | Bucata |
Diametru Difuzor | |
Impedanta Difuzor | 4 ohmi |
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!
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