top of page

The GRS 8PT-8 8” professional paper cone woofer will deliver high output midbass and midrange response without breaking the bank. Packed with features like a 2” voice coil, inductance reducing copper cap, under spider venting, and gap vents; this driver is built for high performance, low distortion, and incredible reliability. Whether you need a drop-in replacement for a damaged loudspeaker or you are designing a high output 2-way system, the 8PT-8 is the perfect driver for budget builds.

Key Features

  • Lightweight ribbed paper cone allows high efficiency with minimal resonance
  • Smooth on and off axis response up to 3,000 Hz for use in high output 2 or 3-way designs
  • Extensive venting keeps cool air flowing across the voice coil to minimize power compression
  • Inductance lowering copper cap reduces distortion and extends high frequency response
  • Spring-loaded push-button terminals makes wire connections quick and easy
  • Foam front gasket ensures an airtight seal for rear mount installations

Product Details

Part Number292-802
Unit of MeasureEach

Product Specifications

Nominal Diameter8"
Bolt Circle Diameter7.75
Power Handling (RMS)150 Watts
Power Handling (MAX)300 Watts
Frequency Response55 to 9,000Hz
Sensitivity92dB 2.83V/1m
Voice Coil Diameter2"

Thiele-Small Parameters

Resonant Frequency (Fs)59Hz
DC Resistance (Re)7.1Ω
Voice Coil Inductance (Le)1.5mH
Mechanical Q (Qms)9.93
Electromagnetic Q (Qes)0.59
Total Q (Qts)0.55
Compliance Equivalent Volume (Vas)0.71ft³
Mechanical Compliance of Suspension (Cms)0.31mm/N
BL Product (BL)10.2T·m
Diaphragm Mass Inc. Airload (Mms)23g
Maximum Linear Excursion (Xmax)7mm
Surface Area of Cone (Sd)212.6cm²

Materials of Construction

Cone MaterialPaper / Glass Fiber
Surround MaterialCloth
Voice Coil Wire MaterialCopper
Voice Coil FormerKapton® / Polyimide
Basket / Frame MaterialSteel
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter8.22"
Baffle Cutout Diameter7.13"
# Mounting Holes8

 Recommended Enclosure Volume

Sealed Volume0.63ft³
Sealed F385.3Hz
Vented Volume0.88ft³
Vented F352.8Hz

GRS 8PT-8 8" Paper Cone Professional Woofer 8 Ohm

SKU: 8PT-8
Expected 2/27/24
    bottom of page