Dayton Audio DMA70-8 2-1/2" Dual Magnet Aluminum Cone Full-Range Driver

Description

Dayton Audio DMA70-8 2-1/2" Dual Magnet Aluminum Cone Full-Range Driver
Dayton Audio DMA70-8 2-1/2" Dual Magnet Aluminum Cone Full-Range Driver
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 INFORMATION
Overall Outside Diameter
2.75″ x 2.75″
Baffle Cutout Diameter
2.51″
Depth
1.51″
# Mounting Holes
8
OPTIMUM CABINET SIZE (DETERMINED USING BASSBOX 6 PRO HIGH FIDELITY SUGGESTION)
Sealed Volume
0.013ft.³
Sealed F3
179 Hz
Vented Volume
0.036 ft.³
Vented F3
88 Hz
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 am
Shipping
Handling time:
Depending on ordering time, handling time will take 7-14 working days.
Usually we order items on Wednesday and ship them out on next Tuesday or Wednesday
We do not stock items. Only Europe customers can have next day shipping
Shipping cost:
Combined with every item you purchase
Delivery time:
Depends on shipping carrier. Usually 3-5 working days.
There is an option for faster shipping.
Payment
We accept the following payment methods:
Paypal
Please contact us if you have any questions.
Service
Customs - Ask about invoice declaration
Condition - New straight from the factory
Items location - EUROPE