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The 830855 SDS Series 4" woofer from Tymphany is perfect for use as a woofer in small format 2-way speakers, a mid in 3-way speakers, or as a compact subwoofer.

Key Features

  • Great all around woofer that works as a midrange or a compact subwoofer
  • Maximum motor venting for quiet operation and good power handling
  • Durable rubber surround and truncated cosmetic steel frame
BrandPeerless by Tymphany
Part Number264-1065
Unit of MeasureEach

Product Specifications

Nominal Diameter4"
Bolt Circle Diameter4.49
Power Handling (RMS)30 Watts
Power Handling (MAX)60 Watts
Frequency Response63 to 6,200Hz
Sensitivity84.8dB 2.83V/1m
Voice Coil Diameter1"

Thiele-Small Parameters

Resonant Frequency (Fs)63Hz
DC Resistance (Re)5.6Ω
Voice Coil Inductance (Le)0.24mH
Mechanical Q (Qms)4.66
Electromagnetic Q (Qes)0.49
Total Q (Qts)0.44
Compliance Equivalent Volume (Vas)0.11ft³
Mechanical Compliance of Suspension (Cms)92.3mm/N
BL Product (BL)5.58T·m
Diaphragm Mass Inc. Airload (Mms)6.9g
Maximum Linear Excursion (Xmax)3mm
Surface Area of Cone (Sd)50.3cm²

Materials of Construction

Cone MaterialTreated Paper
Surround MaterialRubber
Basket / Frame MaterialSteel
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter4.14" across the flats, 4.85"
Baffle Cutout Diameter3.75"
# Mounting Holes6

Recommended Enclosure Volume

Sealed Volume0.1ft³
Sealed F3115.4Hz
Vented Volume0.15ft³
Vented F355.2Hz

Peerless by Tymphany SDS Series 830855 4" Woofer 8 Ohm

SKU: SDS-P830855
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