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P.Audio · SN Series

P.Audio SN-12B

12″ driver of the SN series from P.Audio with 300 W (rms) and 99 dB according to the manufacturer; Thiele-Small parameters have not been preserved.

Availability not checked · Last checked: 2026-11-13

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Schematic cross-section: 12″ driver with ferrite motor Side section: on the left the motor with a large ferrite ring magnet, pole piece and top plate with the air gap. The voice coil sits in the gap on its former, held by the spider. To the right the cone opens out with its dust cap, with the surround at the edge of the basket. The drawing shows the construction, not the dimensions of a particular model.
Schematic cross-section of a driver with a ferrite motor. The drawing shows the construction, not the dimensions of this model; the manufacturer has a product photo.

General data

Link to section “General data”
Type
Woofer
Nominal size
12″
Nominal impedance
8 Ω Manufacturer
Minimum impedance
not available
Sensitivity
99 dB 1 W / 1 m Manufacturer
Frequency range
40 Hz – 3,000 Hz Manufacturer
Voice coil Ø
not available
Winding height
not available
Gap depth
not available
Flux density
not available
Magnet
not available
Weight
not available
Baffle cut-out Ø
not available
Overall diameter
not available
Mounting depth
not available
Displacement
not available
Recommended enclosure volume
not available

Sensitivity is given as an average at 1 W at 1 m; the page does not state which voltage corresponds to “1 W”. The frequency range (“Operating Bandwidth”) is given without a tolerance.

The archived product page does not give Thiele-Small parameters, the voice coil diameter or the magnet material; the linked detail PDF has not been archived. The datasheets of the later SN Series II state neodymium magnets for all models of this series; for the SN-12B itself the magnet material is not documented. The model is no longer listed on the current manufacturer page.

What can this driver do?

Link to section “What can this driver do?”

Simulation from the datasheet values above. The suggestions are calculated, not stated by the manufacturer.

The datasheet lacks values needed for a simulation: Fs, Re, Sd, Qes, Qms, Vas/Mms. We do not estimate values.

Thiele-Small parameters

Link to section “Thiele-Small parameters”

Small-signal parameters as stated by the manufacturer. They change with temperature and level.

Fs
not available
Re
not available
Le
not available
Qts
not available
Qes
not available
Qms
not available
Vas
not available
BL
not available
Mms
not available
Cms
not available
Sd
not available
Xmax
not available
Xdamage
not available
Vd
not available
EBP
not available
Efficiency η₀
not available

Power handling

Link to section “Power handling”
  • Continuous power (standard not stated)300 W

Build plans with this driver

Link to section “Build plans with this driver”

Sources

Link to section “Sources”
  1. Tier A · primary source

    P.Audio SN-12B – Product page (SN-Series, 2007)

    P.Audio System Co., Ltd. · accessed on 13 November 2026

    Only preserved as an Internet Archive copy from 5 July 2007. No Thiele-Small parameters; the linked detail PDF is not archived.

  2. Tier A · primary source

    P.Audio SN-10MB (SN Series II) – Datasheet with Thiele-Small parameters (PDF, 1 page)

    P.Audio System Co., Ltd. · 2007 · accessed on 13 November 2026

    Only preserved as an Internet Archive copy from 8 February 2016; a copy from 29 March 2017 (path uploads/pdf/products/SN-10MB.pdf) has the same content. Printed “All rights reserved by P.Audio System Co.,Ltd. 2007”. The sheet describes the “SN Series II”.

  3. Tier A · primary source

    P.Audio – official manufacturer page (product overview, datasheets)

    STH Professional Audio Co., Ltd. · accessed on 13 November 2026

    According to the footer “P.Audio Thailand by STH Professional Audio Co., Ltd.”; according to the “About” section, the brand is managed by STH Professional Audio. As of 2026-11-13, the former address p-audio.com is a parked domain (redirecting to a sales page). The site’s complete product list (including the “Discontinued” category) no longer contains the SN and SD models from around 2004–2007.

  4. Tier B · secondary source

    Speakerplans.com – MT 122 – 2 x 12" + 1 x 2"

    Speakerplans.com · accessed on 13 September 2026

    Four drawings without author or year and without any statement on usage rights.