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Room EQ Wizard

Speakers

Desktop Bass Stands with Tang Band W6-1139SIF and Linkwitz Transform

by nihtila
written by nihtila

Small sealed subwoofer stands for desktop monitor speakers

  • Tang Band W6-1139SIF 6.5″ woofer
  • Sealed cabinet with around 10 litre volume
  • Form factor to fit behind computer monitors; white paint and black fabric finish to fit desktop environment
  • Linkwitz Transform and digital room correction on miniDSP
  • Woofer size and cabinet size limit performance but gives solid boost for small speakers
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DevicesObsolete

SharcDSP – miniSHARC-based 8-Channel Digital Signal Processor

by nihtila
written by nihtila

Digital signal processor designed for my 4-channel DIY system.

  • 6 digital stereo inputs: 2 toslinks, 2 coaxial RCAs, 1 coaxial BNC and AES/EBU (XLR)
  • 4 coaxial BNC stereo outputs offering 8-channel output where channels are mixed/filtered from two input channels
  • All electrical connectors are transformer-isolated
  • Can be used for crossover filtering for multi-way active speakers, parametric equalisation, digital room correction; filters are given in parameters (PEQ), biquads and/or FIR coefficients; also includes level, delay, polarity, compressor/limiter
  • DSP-solution from miniDSP: miniSHARC OEM/DIY-board and miniSHARC plugin software; outputs with CS8406

Note that this is one of my “old” projects and is kind of obsolete. I do have bare PCBs if someone wants but I have no intentions to further develop the design, documentation, or measurements, which are not really comprehensive. However, the device was fully functional so feel free to pick tips for your own implementation.

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