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NEW GRS 6-1/2" Woofer Surface Mount Poly Cone 4 Ohm 6SMP-4

GRSPart # 292-862
Model: 6SMP-4
1 Question, 1 Answer or
The GRS 6SMP-4 is a 6-1/2" 4 ohm woofer engineered for easy surface mounting and reliable performance. Its damped poly cone, paired with a durable rubber surround, ensures a natural and controlled sound. The motor incorporates a copper cap, significantly reducing inductance and distortion for clarity. Enhanced cooling is achieved through a vented pole piece and an aluminum voice coil former, keeping power compression to a minimum. Additionally, the lightweight 2-layer voice coil and powerful motor enhance efficiency. The GRS 6SMP-4 is a great choice for smaller 2 and 3-way designs, or for revitalizing older speaker systems.

Key Features

  • Damped poly cone with rubber surround controls resonance for a smooth natural response
  • Flexible enough for use in sealed or vented enclosures, great choice for 3-way designs
  • Vented pole piece and aluminum voice coil former improve cooling to limit compression
  • Low profile frame supports surface mounting for easy installation
  • Copper cap in the motor lowers inductance and distortion for more accurate response
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Overview

GRS 6-1/2" Woofer Surface Mount Poly Cone 4 Ohm 6SMP-4

The GRS 6SMP-4 is a 6-1/2" woofer with a low profile frame designed for easy surface mounting, making it a great choice for new installations or retrofits in older speaker systems. Its design focuses on accurate response and long-term reliability, ensuring that you can enjoy consistent performance for years to come.

Crafted with a damped poly cone and rubber surround, this woofer provides a natural and well-controlled response. The inclusion of a copper cap in the motor helps to reduce inductance and distortion, allowing for clearer and more accurate reproduction. Additionally, an integrated foam gasket ensures an airtight seal within the cabinet. The vented pole piece and aluminum former work together to keep the voice coil cool, minimizing power compression and maintaining sound integrity even at higher volumes. Thanks to a lightweight 2-layer coil the 6SMP-4 delivers good efficiency for high output without requiring a ton of power.

The 6SMP-4 is an excellent choice for both sealed and vented enclosures, making it a versatile addition to smaller 2 and 3-way speaker designs. Furthermore, its compatibility with many classic speaker systems opens the door to exciting possibilities for rejuvenating your existing audio setup.

Product Details

BrandGRS
Model6SMP-4
Part Number292-862
UPC848864079820
Unit of MeasureEach
Weight4.9

Product Specifications

Nominal Diameter6-1/2"
Bolt Circle Diameter6.625
Power Handling (RMS)50 Watts
Power Handling (MAX)100 Watts
Impedance
Frequency Response40 - 2,500Hz
Sensitivity90.2dB 2.83V/1m
Voice Coil Diameter1.5"

Thiele-Small Parameters

Resonant Frequency (Fs)45Hz
DC Resistance (Re)3.7Ω
Voice Coil Inductance (Le)0.29mH
Mechanical Q (Qms)2.73
Electromagnetic Q (Qes)0.45
Total Q (Qts)0.39
Compliance Equivalent Volume (Vas)0.53ft³
Mechanical Compliance of Suspension (Cms)0.6mm/N
BL Product (BL)7T·m
Diaphragm Mass Inc. Airload (Mms)21g
Maximum Linear Excursion (Xmax)5mm
Surface Area of Cone (Sd)136cm²

Materials of Construction

Cone MaterialPoly
Surround MaterialRubber
Voice Coil FormerAluminum
Basket / Frame MaterialSteel
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter6.875"
Baffle Cutout Diameter5.7"
Depth3.125"
# Mounting Holes4

Parts Express Staff Recommended Enclosure Volume

Sealed Volume0.2ft³
Sealed F398Hz
Vented Volume0.4ft³
Vented F356Hz

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