RS225-8 8" Reference Woofer 8 Ohm

One of the lowest distortion, highest resolution driver

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Dayton Audio Reference Series RS225-8 8" woofers deliver exceptional clarity, detail, and dynamics—and of course, incredibly low distortion.

The Dayton Audio Reference Series was conceived with one goal in mind—low distortion. Each speaker was carefully designed and optimized to offer the highest performance with the lowest distortion levels. At the same time, by focusing on features that contribute to sound quality and eliminating unnecessary frills, the drivers offer value unparalleled in the industry. Dayton Audio Reference Series RS225-8 8" woofers deliver exceptional clarity, detail, and dynamics—and of course, incredibly low distortion.



Sealed Volume 0.44 ft.³
Sealed F3 66 Hz
Vented Volume 1.17 ft.³
Vented F3 38 Hz
* Enclosure volume/F3s based on BassBox "optimum" calculations



• One of the lowest distortion, highest resolution driver series available
• Low-distortion high-excursion motor system with two short-circuit paths
• Compliant suspension and rigid black anodized aluminum cone for strong bass performance
• Heavy-duty 6-hole cast frame, low-loss rubber surround, and solid aluminum phase plug

Speaker Series Reference Series
Model Number RS225-8
Color Black
Unit of Measure Each
UPC 844632088766
Warranty - Parts 5 Years
Warranty - Labor 5 Years
Product Shipping Weight (lbs.) 6.1000
Speaker Type Woofer
Nominal Diameter 8"
Power Handling (RMS) 80 watts
Power Handling (max) 160 watts
Continuous Program Power --
Impedance 8 ohms
Sensitivity 86.8 dB @ 2.83V/1m
Frequency Response 28 - 2,400 Hz
Voice Coil Diameter 38 mm
Magnet Weight --
DC Resistance (Re) 6.5 ohms
Voice Coil Inductance (Le) 0.86 mH @ 1 kHz
Resonant Frequency (Fs) 28.3 Hz
Mechanical Q (Qms) 1.46
Electromagnetic Q (Qes) 0.51
Total Q (Qts) 0.38
Diaphragm Mass Inc. Airload (Mms) 35.8g
Moving Mass Of Diaphragm (Mmd) --
Mechanical Compliance of Suspension (Cms) 0.88 mm/N
Surface Area Of Cone (Sd) 213.8 cm²
Volume of Displacement (Vd) 149.7 cm³
BL Product (BL) 9.05 Tm
Compliance Equivalent Volume (Vas) 56.8 liters
Maximum Linear Excursion (Xmax) 7.0 mm
Driver's Mechanical Losses (Rms) --
Cone / Diaphragm Material Black Anodized Aluminum Cone
Entry / Exit Diameter --
Surround Material Rubber
Voice Coil Wire Material Copper
Voice Coil Former Aluminum
Basket/Frame Material Cast Aluminum
Magnet Material Ferrite
Overall Outside Diameter 223 mm
Overall Depth 89 mm
Baffle Cutout Diameter 184 mm
# Mounting Holes 6
Mounting Hole Diameter --
Bolt Circle Diameter --
Product Weight --
SKU 844632088766
Model # RS225-8
Barcode # 844632088766
Brand Dayton Audio
Shipping Weight 2.7060kg
Shipping Width 0.235m
Shipping Height 0.235m
Shipping Length 0.127m
Shipping Cubic 0.007011000m3
Assembled Length 0.127m
Assembled Height 0.235m
Assembled Width 0.235m

Postcript to my previous review

By: on 17 December 2014
I purchased a DATS measuring system the other day and I measured a number of run-in Dayton RS255-8 drivers. I have to say the proximity of the measured spec's to the manufacturer spec's is quite a revelation. It leaves me with a lot of confidence to look at other Dayton drivers for future products.

Bang for buck!

By: on 6 December 2014
These drivers are a low distortion unit. Their specifications are excellent and they sound great in a range of different enclosures. If you need more sensitivity then the 4ohm version is worth a look. Low inductance, reasonably smooth response - considering the stiff cone material. The large cone area and long throw mean that the driver can keep up with some heavyweight (expensive!) drivers. Try to find another driver that offers all these features at even twice the price! Check of Zaph's tests on his blog.

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