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Thread: DSP active crossover

  1. #91
    Join Date: Aug 2018

    Location: Northants

    Posts: 7
    I'm Damian.

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    I've started to play with active crossovers and DSP with my UMIK-1 and miniDSP. I have removed the crossovers from my 3-way Heybrook Sextets and by using two miniDSP 2x4HD reproduced the original crossover parameters. The next stage was to use REW (Room Equalisation Wizard, an amazing piece of free software) to analyse my room to see the peaks and troughs.

    By taking this curve and applying the required profile (ie. slight bass rise, flat mid, gentle treble rolloff) REW will create the necessary filters to apply to miniDSP, once applied you can sit back and listen to your results.

    My next stage will be profile each drive unit to create the 'perfect' response for each unit and then bring them all together.

    I'm very impressed with the results so far, just got to sort out my amplification....but that's a big can of worms.

  2. #92
    Join Date: Mar 2017

    Location: London N2

    Posts: 1,005
    I'm Edward.

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    Hi Damien

    Sounds like you are taking a similar path to mine - the difference being that you are using minidsp to do the crossovers whilst I'm using Roon to do that. And you have built REW profiles.

    But I'm confused. You say you are very impressed with the results so far but you still need to sort out the amplification. What amps are you using so far and why is that not good enough?

    In my experiments I've used a multi-channel Sony AV amp and whilst not state of art gives very acceptable results.
    Source: Tidal/Roon
    DAC: Metrum HEX NOS

    Amp: Sugden Masterclass 2018 spec, Radford Revival STA25,
    Speakers: Tannoy Eaton


  3. #93
    Join Date: Aug 2018

    Location: Northants

    Posts: 7
    I'm Damian.

    Default

    Quote Originally Posted by Edwardlon View Post
    Hi Damien

    Sounds like you are taking a similar path to mine - the difference being that you are using minidsp to do the crossovers whilst I'm using Roon to do that. And you have built REW profiles.

    But I'm confused. You say you are very impressed with the results so far but you still need to sort out the amplification. What amps are you using so far and why is that not good enough?

    In my experiments I've used a multi-channel Sony AV amp and whilst not state of art gives very acceptable results.
    Hi Edward,

    Yes, I'm currently using my Marantz 2285B receiver to provide the highs, Quad 405 low, Marantz MA22s mid. The 2285B isn't ideal for many reasons, so I'm on the lookout for something low powered, high quality for the highs. I've got a Rotel RB-970BXII coming as a makeshift solution.

  4. #94
    Join Date: Mar 2017

    Location: London N2

    Posts: 1,005
    I'm Edward.

    Default

    Quote Originally Posted by Damian View Post
    Hi Edward,

    Yes, I'm currently using my Marantz 2285B receiver to provide the highs, Quad 405 low, Marantz MA22s mid. The 2285B isn't ideal for many reasons, so I'm on the lookout for something low powered, high quality for the highs. I've got a Rotel RB-970BXII coming as a makeshift solution.
    How are you controlling volume?
    Source: Tidal/Roon
    DAC: Metrum HEX NOS

    Amp: Sugden Masterclass 2018 spec, Radford Revival STA25,
    Speakers: Tannoy Eaton


  5. #95
    Join Date: Aug 2018

    Location: Northants

    Posts: 7
    I'm Damian.

    Default

    My Marantz SC22 preamp, one DSP per channel, split 3 ways. The miniDSP can attenuate but I haven't needed to alter the volume to cater for amp differences.

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