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Thread: DSP active crossover

  1. #81
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,177
    I'm Steve.

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    Have you tried time aligning left and right channels as well?
    System: Turntable : SP10 MKII slate plinth, Custom Ebony tonearm board, Arm : Fidelity Research FR64s, Cartridge : SPU Royal N. SUT : Lundahl 1:13. Phonostage : Icon Audio, Digital CD spinner, Serious USB->I2S streaming, ADC / DSP XO / Pre / 4 DAC's : WAF Najda, Poweramps : 3 x EL84 SET's, 2 x D class amps on bass channels, Speakers : 5 way front loaded horn system: 2 X Tapped sub 15" LF drivers / 2 X Exponential mid bass 15" drivers / Tractrix 200Hz mid horns with JBL2482's, / Tractrix 550Hz upper wooden horns with factory refurb'd Vitavox S2's / Raal Lazy Ribbons as high frequency tweeters. Wires: good silver or good copper where best suited. DIY RCM.

    Maker of counterweights, tonearm boards, Tannoy GRF style speaker cabinets, horn speakers and more.
    For more information about my creations and products please click below

    http://fosworld.wixsite.com/magna-audio & on Instagram https://www.instagram.com/magna_audio/

  2. #82
    Join Date: Mar 2017

    Location: London N2

    Posts: 990
    I'm Edward.

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    No not yet. I did change the gain a bit on one side. I'll try timings and see how I go.

    But the major constraints I have are the relative low quality of the Magnum drivers. But not yet prepared to step into the big time. Still learning and playing.

    Source: Tidal/Roon
    DAC: Metrum HEX NOS

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


  3. #83
    Join Date: Mar 2009

    Location: The New Forest

    Posts: 1,177
    I'm Steve.

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    Quote Originally Posted by Edwardlon View Post
    No not yet. I did change the gain a bit on one side. I'll try timings and see how I go.

    But the major constraints I have are the relative low quality of the Magnum drivers. But not yet prepared to step into the big time. Still learning and playing.

    Hehe, slippery slope to Vitavox, TAD, Raal Ribbon tweeters etc etc
    System: Turntable : SP10 MKII slate plinth, Custom Ebony tonearm board, Arm : Fidelity Research FR64s, Cartridge : SPU Royal N. SUT : Lundahl 1:13. Phonostage : Icon Audio, Digital CD spinner, Serious USB->I2S streaming, ADC / DSP XO / Pre / 4 DAC's : WAF Najda, Poweramps : 3 x EL84 SET's, 2 x D class amps on bass channels, Speakers : 5 way front loaded horn system: 2 X Tapped sub 15" LF drivers / 2 X Exponential mid bass 15" drivers / Tractrix 200Hz mid horns with JBL2482's, / Tractrix 550Hz upper wooden horns with factory refurb'd Vitavox S2's / Raal Lazy Ribbons as high frequency tweeters. Wires: good silver or good copper where best suited. DIY RCM.

    Maker of counterweights, tonearm boards, Tannoy GRF style speaker cabinets, horn speakers and more.
    For more information about my creations and products please click below

    http://fosworld.wixsite.com/magna-audio & on Instagram https://www.instagram.com/magna_audio/

  4. #84
    Join Date: Mar 2017

    Location: London N2

    Posts: 990
    I'm Edward.

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    Every time I go to a show I always look out for the TAD room. First time I heard a pair I was bowled over. The experience still lingers. Can't recall having heard Vitavox or Raal at shows but certainly both high pedigrees. For me the litmus test for a speaker is if it makes my spine tingle. I get that with a few speakers - TAD, Harbeth, MBL, Avantgarde and of course Tannoys. To name a few.

    Wish I had the space for some horns.
    Source: Tidal/Roon
    DAC: Metrum HEX NOS

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


  5. #85
    Join Date: Mar 2016

    Location: East Sussex

    Posts: 181
    I'm Nat.

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    Very interesting thread I started a thread on another forum asking for advice on building a Reggae soundsytem type valve pre amp that incorporates a 3 way active cross over with kill switches for all three so Im wondering if your dsp could be incorporated perhaps with a valve output stage similar to those used within a dac.
    Your work on your speaker is also very helpful as I would need to do the same.

  6. #86
    Join Date: Apr 2016

    Location: souf east for work

    Posts: 988
    I'm paul.

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    Quote Originally Posted by Magna Audio View Post
    Hehe, slippery slope to Vitavox, TAD, Raal Ribbon tweeters etc etc
    Raal are a no brainer. What I liked about deqx was three different set ups available on the fly. Finding best crossover points is instantaneous by ear. Maybe not for the purist, but different set ups for different music genre.
    Sony STR 6055 Denon DP80 Stax UA-70 Shure Ultra 500 in a Martin Bastin body with jico stylus Zu omen

    Office system, DIY CSS fullrange speakers with aurum cantus G2 ribbons Najda dsp as dac Akai AM-U02 Jvc QL-A51 direct drive turntable
    SAE1000LT leema sub. JVC Z4S cart is in the house

    Garage system another Sony receiver, cassette deck and full range drivers in free air


    System components are subject to change without warning and at the discretion of the owner.

  7. #87
    Join Date: Mar 2017

    Location: London N2

    Posts: 990
    I'm Edward.

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    Quote Originally Posted by Natara View Post
    Very interesting thread I started a thread on another forum asking for advice on building a Reggae soundsytem type valve pre amp that incorporates a 3 way active cross over with kill switches for all three so I’m wondering if your dsp could be incorporated perhaps with a valve output stage similar to those used within a dac.
    Your work on your speaker is also very helpful as I would need to do the same.
    Hi Nat

    Well I'm just learning. But perhaps describe in more detail what you have and what you are trying to achieve so other in this thread may offer some hints.

    Removing a crossover from a speaker and wiring each driver up directly is relatively easy. A bit of desoldering and new soldering is as complicated as it gets. Just have to be methodical.

    Edward
    Source: Tidal/Roon
    DAC: Metrum HEX NOS

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


  8. #88
    Join Date: Mar 2017

    Location: London N2

    Posts: 990
    I'm Edward.

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    Quote Originally Posted by paulf-2007 View Post
    Raal are a no brainer. What I liked about deqx was three different set ups available on the fly. Finding best crossover points is instantaneous by ear. Maybe not for the purist, but different set ups for different music genre.
    There is someone not far away from me () who has a 3 way custom speaker system gathering shed dust. Maybe I will ask him if I can play around with it and find the optimum crossover points.

    Was your 3 different set ups one speaker system with 3 different DSP profiles or 3 different speaker systems?
    Source: Tidal/Roon
    DAC: Metrum HEX NOS

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


  9. #89
    Join Date: Apr 2012

    Location: London

    Posts: 387
    I'm james.

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    It's three per speaker setup, plus an uncorrected reference. Unlimited speakers.

    Sent from my BLA-L09 using Tapatalk

  10. #90
    Join Date: Apr 2016

    Location: souf east for work

    Posts: 988
    I'm paul.

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    Quote Originally Posted by Edwardlon View Post
    There is someone not far away from me () who has a 3 way custom speaker system gathering shed dust. Maybe I will ask him if I can play around with it and find the optimum crossover points.

    Was your 3 different set ups one speaker system with 3 different DSP profiles or 3 different speaker systems?
    I used the three profiles with one speaker multi amp set up. It's possible to have one profile for different speaker set ups I guess, but not connected at the same time.
    Sony STR 6055 Denon DP80 Stax UA-70 Shure Ultra 500 in a Martin Bastin body with jico stylus Zu omen

    Office system, DIY CSS fullrange speakers with aurum cantus G2 ribbons Najda dsp as dac Akai AM-U02 Jvc QL-A51 direct drive turntable
    SAE1000LT leema sub. JVC Z4S cart is in the house

    Garage system another Sony receiver, cassette deck and full range drivers in free air


    System components are subject to change without warning and at the discretion of the owner.

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