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GRS K-33-4 Replacement 15" Woofer for Klipsch Klipschorn, Belle Klipsch, Cornwall, and Lascala Speakers

GRSPart # 292-830
Model: K-33-4

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The GRS K33 is a 1:1 drop-in replacement for the Klipsch K-33 woofer designed to bring your old Klipsch heritage cabinets back to life! With the same suspension and cone characteristics as the original K-33, this driver performs and will retain the same crossover point, tone, and quality when used with the Klipsch crossover networks in a variety of cabinets.

Key Features

  • Drop-in 4 Ohm replacement woofer for the popular Klipsch K33
  • Fits popular Klipsch Heritage Cabinets: Klipschorn, Belle Klipsch, Cornwall, Lascala
  • Perfect visual match for restored Klipsch cabinets
  • Triple-roll surround and paper cone provide a perfect tonal match
  • Replacement for K-43-E, K-33-B, K-33-J, K-33-K and more.
Your Price: $104.98
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MSRP: $144.99
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Overview

GRS K-33-4 Replacement 15" Woofer for Klipsch Klipschorn, Belle Klipsch, Cornwall, and Lascala Speakers

GRS K33-4 Replacement 15" Woofer for Klipsch Speakers

A worry-free replacement for your favorite Klipsch cabinet

The GRS K-33 is a 1:1 drop-in replacement for the Klipsch K-33 woofer designed to bring your old Klipsch heritage cabinets back to life! With the same sensitivity, suspension, and cone characteristics as the original K-33, this driver performs and will retain the same crossover point, tone, and quality when used with the Klipsch crossover networks in a variety of cabinets.

Key Specs:

 
  • Nominal Diameter: 15"
  • Power Handling (RMS): 200W
  • Power Handling (MAX): 400W
  • Impedance: 4 Ω
  • Frequency Response: 33-5000Hz
  • Sensitivity: 97dB 2.83V/1m
  • Voice Coil Diameter: 2"
  • Maximum Linear Excursion: 8.25 mm

Frequency Response & Impedance Curve

The GRS K-33 was designed to have the same performance in free-air as the original in order to have the same performance in-cabinet for worry-free replacement.

Two-of-a-kind

The engineers at GRS understand that while performance is important when selecting replacement drivers for a restoration project, aesthetic is close behind in what dictates an appropriate replacement. Using the same materials and colors for paper cone, dustcap, and triple-roll surround, down to the design of the stamped frame, GRS guarantees mis-matched components won't get in the way of enjoying your favorite Klipsch heritage cabinets.

DIY-ers who do not own any of the classic cabinets will appreciate the high-sensitivity and subdued midrange for easy crossover and cabinet design.

Product Details

BrandGRS
ModelK-33-4
Part Number292-830
UPC848864070759
Unit of MeasureEach
Weight13.2

Product Specifications

Nominal Diameter15"
Bolt Circle Diameter14.65
Power Handling (RMS)200 Watts
Power Handling (MAX)400 Watts
Impedance4Ω
Frequency Response33-5500Hz
Sensitivity97dB 2.83V/1m
Voice Coil Diameter2"
Magnet Weight59oz.

Thiele-Small Parameters

Resonant Frequency (Fs)32.2Hz
DC Resistance (Re)3.52Ω
Voice Coil Inductance (Le)1.129mH
Mechanical Q (Qms)12.61
Electromagnetic Q (Qes)0.5458
Total Q (Qts)0.52
Compliance Equivalent Volume (Vas)9.68ft³
Mechanical Compliance of Suspension (Cms)0.267mm/N
BL Product (BL)10.93T·m
Diaphragm Mass Inc. Airload (Mms)91.55g
Maximum Linear Excursion (Xmax)8.25mm
Surface Area of Cone (Sd)855.3cm²

Materials of Construction

Cone MaterialPaper
Surround MaterialPaper
Voice Coil Wire MaterialCopper
Voice Coil FormerAluminum
Basket / Frame MaterialSteel
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter15.11"
Baffle Cutout Diameter13.85"
Depth5.82"
# Mounting Holes8

Parts Express Staff Recommended Enclosure Volume

Sealed Volume4.875ft³
Sealed F350.2Hz
Vented Volume8ft³
Vented F333.5Hz

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