The Dayton Audio DS175-PR 6-1/2" passive radiator is excellent
general-purpose radiator which allows lower tuning frequencies in smaller
enclosures, suitable for replacement or for new construction.
Highlights
Long-throw suspension system for clean excursion
Rugged stamped frame design with rear spider for stability
Durable coated paper cone and rubber surround
M5 threaded hole simplifies adding mass for lower tuning frequency
The Dayton Audio DS175-PR 6-1/2" passive radiator is an excellent
general-purpose radiator suitable for replacement or for new construction. A
built-in mass disc offers a good starting point for most designs, and a
convenient M5 threaded hole (screw included) allows different types of weights
to be added if desired. Cosmetically and mechanically, the passives match the
Designer Series line of drivers, with a poly coated paper cone and medium-roll
rubber surround for clean excursion and long life. The possibilities with these
passives are endless, from floor standing two-ways to small active/passive
subwoofer systems.
Recommended for use in passive radiator enclosure alignments with active
drivers from 3" to 6.5" in diameter. Dual passive radiators are recommended for
use with 6.5" active drivers.
Specifications:
• Fs: 24.5 Hz
• Vas: 0.95 cu. ft.
• Qms: 5.57
• Cms: 1.15 mm/N
• Rms: 1.0 kg/s
• Mms: 36.6 g
• Sd: 128.7 sq. cm.
• Xmax: 8 mm
• Dimensions: Overall diameter: 6.94", Cutout diameter: 5.63", Depth:
1.88"
Note: Adding mass to the passive radiator will decrease Fs and increase
Qms.
Tip: As a general rule the passive radiator(s) should be able to move
double the volume of air as the active woofer(s)/subwoofer(s) in the system. For
example: A passive radiator system for a 6-1/2" woofer/subwoofer that has 8mm of
Xmax would require 2 6-1/2" passive radiators with 8mm of Xmax. For single
passive radiator systems, it is common to use a passive that is larger than the
active woofer(s)/subwoofer(s).
Product Specifications
Nominal Diameter - 6-1/2"
Thiele-Small Parameters
Resonant Frequency (Fs) - 24.5 Hz
Mechanical Q (Qms) - 5.57
Compliance Equivalent Volume (Vas) - 0.95 ft.³
Mechanical Compliance of Suspension (Cms) - 1.15 mm/N
Diaphragm Mass Inc. Airload (Mms) - 36.6g
Maximum Linear Excursion (Xmax) - 8 mm
Surface Area of Cone (Sd) - 128.7 cm²
Materials of Construction
Cone Material - Paper
Surround Material - Rubber
Basket / Frame Material - Steel
Mounting Information
Overall Outside Diameter - 6.94"
Baffle Cutout Diameter - 5.63"
Depth - 1.88"
Bolt Circle Diameter - 6.54"
# Mounting Holes - 5