Designed For Active OEM Multi-Way Systems Where Each Speaker is Powered By One Specific Amplified Channel! 4-Channel Stereo Passive Mixer Stereo passive mixer (Unpowered) featuring 4 input channels and 2 output channels, designed for active OEM multi-way systems where each speaker is powered by one specific amplified channel. 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. 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. Specifications: RMS Power: 25W Peak Power: 50W Output Gain: -3dB, % (100Hz) 0.5 T.H.D: (Input Power Max) % (1kHz) 0.05, % (10kHz) 0.05 Bandwidth: (-3dB) 15 ÷ 75kHz Crosstalk: (10kHz) > 55dB Input Impedance: 32Ω Out Impedance: 10kΩ Phase Inverter: CH1 (Left & Right) Dimensions: (W) 103.5mm x (H) 36.5mm x (D) 86.5mm Weight: 0.40kg
