GRS 6PR-8 6-1/2" polypropylene cone woofers with butyl rubber surrounds are great replacement speakers, but also provide excellent performance in new projects.
Key Features
Polypropylene cone for perfect balance of stiffness, mass, and self-damping
Butyl rubber surround ensures high excursion and long term durability
Stamped steel frame keeps components in perfect alignment
Optimized motor features high-energy ceramic ferrite magnet, vented pole piece
Brand
GRS
Model
6PR-8
Part Number
292-426
UPC
844632088513
Unit of Measure
Each
Weight
2.85
Product Specifications
Nominal Diameter
6-1/2"
Power Handling (RMS)
60 Watts
Power Handling (MAX)
120 Watts
Impedance
8Ω
Frequency Response
60 to 8,000Hz
Sensitivity
87dB 2.83V/1m
Voice Coil Diameter
1.5"
Thiele-Small Parameters
Resonant Frequency (Fs)
69Hz
DC Resistance (Re)
7.1Ω
Voice Coil Inductance (Le)
1.1mH
Mechanical Q (Qms)
3.51
Electromagnetic Q (Qes)
1.16
Total Q (Qts)
0.87
Compliance Equivalent Volume (Vas)
0.37ft³
Mechanical Compliance of Suspension (Cms)
0.38mm/N
BL Product (BL)
6.1T·m
Diaphragm Mass Inc. Airload (Mms)
14.2g
Maximum Linear Excursion (Xmax)
3mm
Surface Area of Cone (Sd)
140cm²
Materials of Construction
Cone Material
Poly
Surround Material
Rubber
Magnet Material
Ferrite
Mounting Information
Overall Outside Diameter
6.5"
Baffle Cutout Diameter
5.625"
Depth
3.0625"
# Mounting Holes
4
 Recommended Enclosure Volume
Sealed Volume
0.5ft³
Sealed F3
70.5Hz
Vented Volume
0.5ft³
Vented F3
54.6Hz