Dayton Audio RS225P-4A 8" Reference Paper Woofer 4 Ohm

Manufacturer Part Number: RS225P-4A

Dayton Audio Reference Series paper cone drivers combine class-leading low distortion performance with the use of a proprietary cone blend. Now with a flatter frequency response and smoother high frequency roll-off allowing for extended bandwidth and easier crossover integration.

Key Features:

• Now with improved frequency response for easier crossover integration
• Three-part paper composite diaphragm featuring paper, Kevlar, and glass fibers
• Low-distortion motor, 6-hole cast frame, rubber surround, and solid aluminum phase plug
• Perfect for use as a woofer, midwoofer, or dedicated midrange driver
• 92.9 dB sensitivity and 6 mm of excursion

Dayton Audio RS225P-4A 8" Reference Paper Woofer 4 Ohm

Now with improved frequency response - we tweaked the design and the result is a much a smoother high frequency roll-off allowing for extended bandwidth and easier crossover integration.

The performance of the original groundbreaking Reference Series from Dayton Audio, now available with a paper cone! The Reference Series Paper drivers use a proprietary paper cone formulation combining natural paper pulp and synthetic Kevlar and glass fibers to create an advanced non-woven fiber composite that delivers the perfect combination of excellent detail and smooth, natural sonic character, plus a distinctive, classy look.

Product Details

BrandDayton AudioModelRS225P-4APart Number295-567UPC848791002656Unit of MeasureEachWeight6

Product Specifications

Nominal Diameter8"Bolt Circle Diameter8.23Moving Mass Of Diaphragm (Mmd)25.0Power Handling (RMS)80 WattsPower Handling (MAX)120 WattsImpedance4ΩFrequency Response35 to 5,500HzSensitivity92.9dB 2.83V/1mVoice Coil Diameter1.52"

Thiele-Small Parameters

Resonant Frequency (Fs)37.7HzDC Resistance (Re)3.3ΩVoice Coil Inductance (Le)0.51mHMechanical Q (Qms)1.85Electromagnetic Q (Qes)0.48Total Q (Qts)0.38Compliance Equivalent Volume (Vas)1.61ft³Mechanical Compliance of Suspension (Cms)0.71mm/NBL Product (BL)6.4T·mMaximum Linear Excursion (Xmax)6mmSurface Area of Cone (Sd)213.8cm²

Materials of Construction

Cone MaterialPaper / KevlarSurround MaterialRubberBasket / Frame MaterialCast AluminumMagnet MaterialFerrite

Mounting Information

Overall Outside Diameter8.78"Baffle Cutout Diameter7.24"Depth3.5"# Mounting Holes6

Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)

Sealed Volume0.45ft³Sealed F383HzVented Volume0.97ft³Vented F349Hz