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Audison SPM4 - 4 Channel Stereo Passive Mixer

£144.99

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SKU: 8018823118538N/ACategories: Audison - Car Audio Systems, Digital Signal Processors

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The Audison SPM 4 - Stereo Passive Mixer (unpowered) features 4 input channels and 2 output channels, designed for active OEM multi-way systems where each speaker is powered by one specific amplified channel.

The SPM4 mixes audio through 4 audio transformers specifically developed to achieve very low distortion and highly linear acoustic response.

SPM4 provides the ability to mix the midrange/woofer and tweeter channels coming from the amplifier and supply one single mid-high channel. The Ch1(L/R) channels feature two inputs, one features an inverting input compared to Ch2 (L/R) channels; the mixing process often gives better results when one of the two channels undergoes a 180° dephasing.

The SPM4 is especially recommended to extend the number of inputs of the Audison digital processors or amplifiers with built-in DSP because they feature a De-equalizer (De-Eq). In that case, any possible non-linear acoustic emissions due to the mixing of the pre-existing filtered channels are duly compensated.

Technical Specifications

  • Max input power - 25w RMS, 50w Peak
  • Output Gain - -3 dB
  • T.H.D. (input power max) - 0.5% (100Hz), 0.05% (1kHz), 0.05% (10kHz)
  • Bandwidth - 15 ÷ 75kHz (-3dB)
  • Crosstalk - > 55 dB (10kHz)
  • Input impedance - 32 Ω
  • Out impedance - 10 kΩ
  • Phase inverter - Ch1 (left & right)
  • W x H x D - 103.5mm x 36.5mm x 86.5mm (4.07" x 1.43" x 3.40")
  • Weight - 0.24kg, 0.53 lb

Further Information

Audison SPM 4 - Tech Sheet

Audison SPM 4 - User Manual

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The products we use and sell are of the highest quality and we trust them wholeheartedly, but every now and again a product has a fault that is covered under the manufacturers warranty.

In the event of such an occurance please contact us via email at info@studioincar.co.uk to proceed with the warranty process.

Below is a list of all the Manufacturers warranty timeframes with any special instructions for extended warranties:

Amphion

  • 5 Years standard Manufacturers warranty

AudioControl

  • 5 Years with Installation by an Authorised Installer (Studio Incar is an Authorised Installer)
  • 1 Year if you are doing your own Installation
  • 2 Years if you register the product with the UK supplier

AudioLab

  • 2 Years standard Manufacturers warranty

Auralic

  • 1 Year Standard Manufacturers Warranty
  • 2 Year Extended Warranty - Product Registration within 30 days of Purchase

Audison

  • 1 Year standard Manufacturers warranty
  • 2 Years if you register the product with the UK supplier

Blackvue

  • 6 Months standard Manufacturers warranty

Blaupunkt

  • 1 Year standard Manufacturers warranty

Chord Company

  • Lifetime Warranty

Dynaudio

  • 2 Years on Car Audio Products - No Extendable Warranty
  • 2 Years standard Warranty on Home Audio Products
  • up to 8 Years Extendable Warranty on Home Audio Products when you register at Dynaudio

Focal

  • 1 Year Standard Manufacturers Warranty
  • 2 Years Extended Warranty when registered with Focal

Hegel

  • 2 Years Standard Manufacturers Warranty

Hertz

  • 1 Year standard Manufacturers warranty
  • 2 Years if you register the product with the UK supplier

HiFi Rose

  • 2 Years Standard Manufacturers Warranty

JL Audio

  • 1 Year for Speakers and Subwoofers
  • 2 Years for Amplifiers and Processors

Ortofon

  • 1 Year Standard Manufacturers Warranty

Peachtree Audio

  • 2 Years Standard Manufacturers Warranty
  • 3 Years Extended Warranty if Registered with Peachtree

Pro-Ject

  • 2 Years Standard Manufacturers Warranty
  • 3 Years Extended Warranty if Registered with Pro-Ject

Q-Acoustics

  • 4 Years for Passive Loudspeakers
  • 1 Year for Active Loudspeakers / Subwoofers
  • 5 Years for Passive Loudspeakers if Registers with Q Acoustics
  • 2 Years for Active Loudspeakers / Subwoofers if Registered with Q Acoustics

SolidSteel

  • 1 Year Standard Manufacturer Warranty

Sony

  • 1 Year Standard Manufacturer Warranty

Wharfedale

  • 2 Years Standard Manufacturers Warranty
  • 3 Years Extended Warranty if registered with Wharfedale
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