Dayton Audio Reference RS225

Discover the Reference RS225, an 8" (20cm) mid-woofer from Dayton Audio known for its outstanding performance and quality. Part of the renowned Dayton Audio Reference series, this mid-woofer offers powerful 4 and 8 ohm impedance options and sets new standards for high-performance loudspeaker chassis. Equipped with a black anodized cone, a robust 6-hole cast frame, a low-loss rubber surround and a solid aluminum phase connector, the RS225 offers exceptional performance and durability. Its quality and design make it the perfect choice for both serial pairs in MTM and for center speakers.

• 4 ohm and 8 ohm impedance are perfect for serial pairs in MTMs and center speakers
• Excellent car audio midrange/woofer
• High-quality, low-distortion motor with two short-circuit paths to reduce inductance
• Designed and manufactured in the USA

The Dayton Audio Reference Series sets new standards in high performance loudspeaker drivers. By using a low distortion motor system with two short circuit paths and a rigid aluminum diaphragm, the Reference Series outperforms drivers costing many times its price. The low distortion characteristics and high excursion provide exceptional clarity, detail and dynamics. The woofer has a black anodized diaphragm, a heavy-duty 6-hole cast frame, a low loss rubber surround and a solid aluminum phase connector.

• 8" (20cm) woofer
• Power handling: 80 watts RMS
• Max load capacity: 160 watts
• Impedance (Z): 4 Ohm
• Sensitivity: 91 dB @ 2.83V/1m
• Frequency response: 35 - 2,300 Hz
• Voice coil diameter: 38 mm
• DC resistance (Re): 3.2 Ohm
• Voice coil induction (Le): 0.49 mH @ 1 kHz
• Resonance frequency (Fs): 33 Hz
• Mechanical quality class (Qms): 2.02
• Electrical quality class (Qes): 0.52
• Overall quality (Qts): 0.41
• Moving mass (mms): 32.2g
• Suspension compliance (Cms): 0.72 mm/N
• Membrane area (Sd): 213.8 cm²
• Displacement volume (Vd): 128.2 cm³
• Power factor (BL): 6.38 tm
• Equivalent volume (Vas): 46.4 liters
• Maximum deflection (Xmax): 6.0 mm
• Material cone / membrane: Black anodized aluminum cone
• Bead material: rubber
• Voice coil wire material: copper
• Voice coil molding material: aluminum
• Basket/frame material: cast aluminum
• Magnetic material: Ferrite
• Outer diameter: 223 mm
• Total depth: 92 mm
• Diameter of the cutout: 184 mm
• Mounting holes: 6
• Closed volume: 14.15 liters
• Closed F3: 70 Hz
• Bass reflex volume: 45.87 liters
• Bass reflex F3: 36 Hz

• 8" (20cm) woofer
• Power handling: 80 watts RMS
• Max load capacity: 160 watts
• Impedance (Z): 8 Ohm
• Sensitivity: 86.8 dB @ 2.83V/1m
• Frequency response: 28 - 2,400 Hz
• Voice coil diameter: 38 mm
• DC resistance (Re): 6.5 Ohm
• Voice coil induction (Le): 0.86 mH @ 1 kHz
• Resonance frequency (Fs): 28.3 Hz
• Mechanical quality class (Qms): 1.46
• Electrical quality class (Qes): 0.51
• Overall quality (Qts): 0.38
• Moving mass (mms): 35.8g
• Suspension compliance (Cms): 0.88 mm/N
• Membrane area (Sd): 213.8 cm²
• Displacement volume (Vd): 149.7 cm³
• Power factor (BL): 9.05 tm
• Equivalent volume (Vas): 56.8 liters
• Maximum deflection (Xmax): 7.0 mm
• Material cone / membrane: Black anodized aluminum cone
• Bead material: rubber
• Voice coil wire material: copper
• Voice coil molding material: aluminum
• Basket/frame material: cast aluminum
• Magnetic material: Ferrite
• Outer diameter: 223 mm
• Total depth: 89 mm
• Diameter of the cutout: 184 mm
• Mounting holes: 6
• Closed volume:  12.45 liters
• Closed F3: 66 Hz
• Bass reflex volume: 33.13 liters
• Bass reflex F3: 38 Hz