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Descriere
Dayton Audio's DMA70-8 2-1/2” high performance full-range driver combines a rigid aluminum cone, powerful dual magnet neodymium motor, and a proprietary open frame to create a state of the art speaker that delivers low distortion, natural response, and amazing high frequency capability. Make the DMA70-8 the first choice for your next smart speaker, portable Bluetooth speaker, or even high output line array design.
Highlights
- Excellent high frequency response for true full-range applications
- Dual neodymium motor to create a symmetrical magnetic field for superb control
- Large copper cap lowers distortion while improving high frequency response
- Vented aluminum voice coil former with exceptional heat dissipation for high power handling
- Exclusive 8-spoke open frame design provides extensive venting and minimal reflection
- DIY friendly, oversized mounting flange makes installation simple
- Matching tunable passive radiators also available!
Product Details
Dayton Audio DMA70-8 2-1/2” Dual Magnet Aluminum Cone Full-Range Driver 8 Ohm
Providing high efficiency with low distortion, Dayton Audio's DMA70-8 2-1/2” aluminum cone full-range is an ideal driver for use in many of today's modern speaker designs. Whether you are designing a portable Bluetooth speaker, sound bar, compact desktop speaker, or even a high output line array the DMA70-8 is the perfect full-range for the job.
Designed for the highest performance while delivering maximum value, the no compromise design of the DMA70-8 produces true full-range output capability with minimal distortion. The motor uses dual neodymium magnets creating a strong and symmetrical magnetic field providing high efficiency with excellent cone control. The magnet assembly also includes a large copper cap and sleeve to lower inductance and distortion resulting in improved high frequency response. The 2-layer 1 voice coil is wound on an extensively vented aluminum former providing excellent heat dissipation for high power handling and low power compression. A rubber surround and large spider keeps the lightweight aluminum cone linear with superb mechanical damping. In addition, the aluminum dust cap is attached directly to the voice coil former to improve high frequency response with terrific off axis performance. Holding everything together is a proprietary 8-spoke frame with an extremely open design that has extensive venting under the spider and ample room for high excursion.
Furthermore, Dayton Audio designed the frame for all the DMA Series with DIY speaker builders in mind. The oversized mounting flange means that no precision cutouts are necessary. To ensure an easy installation, the terminals are oriented in such a way that no odd cutouts or notches are needed for connector or wire clearance. Finally, the corners have a 1/8 radius, meaning that for flush mounting you can get a perfect fit using any standard 1/8 straight cut router bit.
PRODUCT SPECIFICATIONS
Nominal Diameter
2-1/2”
Power Handling (RMS)
20 Watts
Power Handling (max)
30 Watts
Impedance
8 ohms
Frequency Response
110 to 20,000 Hz
Sensitivity
82.9 dB 2.83V/1m
Voice Coil Diameter
1
THIELE-SMALL PARAMETERS
Resonant Frequency (Fs)
113 Hz
DC Resistance (Re)
7.5 ohms
Voice Coil Inductance (Le)
0.47 mH
Mechanical Q (Qms)
2.06
Electromagnetic Q (Qes)
0.66
Total Q (Qts)
0.50
Compliance Equivalent Volume (Vas)
0.02 ft.³
Mechanical Compliance of Suspension (Cms)
0.73 mm/N
BL Product (BL)
4.7 Tm
Diaphragm Mass Inc. Airload (Mms)
2.6g
Maximum Linear Excursion (Xmax)
2.0 mm
Surface Area of Cone (Sd)
22.9 cm²
MATERIALS OF CONSTRUCTION
Cone Material
Aluminum
Surround Material
Rubber
Voice Coil Wire Material
Copper
Voice Coil Former
Aluminum
Basket / Frame Material
Polymer
Magnet Material
Neodymium
MOUNTING
Informații suplimentare
Producător | |
---|---|
Disponibilitate | La Comandă – Produsul se aduce la comandă in 3-6 zile! |
Tip Difuzor | Full Range |
Unitate Pret | Bucata |
Diametru Difuzor | |
Impedanta Difuzor | 8 ohmi |
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.
- 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 ceva 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.
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.
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.
Pentru detalii privind aceste aspecte de rodaj si nu numai, va rugam sa ne consultati!
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