Schiit Vidar Impression Thread - UPDATED WITH REVIEW (CHECK FIRST POST)

Discussion in 'Power Amps' started by Rotijon, Jul 17, 2017.

  1. Puma Cat

    Puma Cat Almost "Made"

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    Thanks, Gustavo. So, you were simply using the Sony to serve/stream files out to Bifrost for D/A conversion? If you have other videos, please send me the links via PM, I don't want to derail this thread with interesting, but off-topic content.
     
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  2. Marvey

    Marvey Loves sex and records

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    It's really not that hard. Just pad down tube amp (may not even be necessary as long as there is no clipping) into an active crossover. I did it here years ago. EC2A3mk4 on top and Crest CA2 on bottom. Cicada driver XO was passive. Bass driver XO was active, cheapo DCX2496, fed by EC2A3mk4 and feeding Crest CA2 to woofers.

    [​IMG]

    I am actually running the Oris horns and woofer box similiarly at home right now, but passive all the way around. Saga feeds JLH 69 amp on top for Lowther DX3 / Oris and Vidar on bottom for Beyma woofers in a box.
     
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  3. Metro

    Metro Rando

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    With the amps having different sound signatures, wouldn't there be an issue with cohesiveness and integration between the speaker drivers?
     
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  4. Gustavo

    Gustavo Rando

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    Thank you Mr Puma Cat, yes it is, the sony works like player, I send to you the videos links on PM or conversation! I have a new video with vinyl performance!
     
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  5. Marvey

    Marvey Loves sex and records

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    The effect is lessened in the case of the EC2A3 because the speaker outs are split into the active xover and widebanders. For Vidar and JLH3, the two amps have similar enough type sound signatures, and the bigger issue is horn / woofer integration.

    Good point and why I am a strong advocate of running sub plate amps via the speaker level inputs for music (HT has totally different demands).
     
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  6. Puma Cat

    Puma Cat Almost "Made"

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    Agreed, and one of the reasons I really like REL subs. Small side-note: I performed a DOE some years back to optimally integrate my REL sub into my speaker-based system. I should put that up in the Measurements section soon so folks can see the approach.
     
    Last edited: Sep 13, 2017
  7. Metro

    Metro Rando

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    Do you mean because of speaker level inputs? Does REL handle it differently from other subs?
     
  8. Puma Cat

    Puma Cat Almost "Made"

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    REL uses leads which connect directly to the output taps of the power amplifier to the sub. In RELs view, this is the best way to do this, and personally, I would agree. Many other Sub mfrs use an interconnect from the preamp to the sub.
     
    Last edited: Sep 13, 2017
  9. SineDave

    SineDave Friend

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    Those of us HT guys with top-end processors can also route the full-range signal without any LPF/HPF or bass management to the sub via the LFE output when listening to stereo content, so it's effectively the same thing without speaker inputs.
     
  10. Marvey

    Marvey Loves sex and records

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    No no. We are not talking about the same thing. What I am talking about is leveraging the signal from the power ampliifer that is already powering the main speakers as the input into the sub amplifier or sub processor. The rationale is that you want to carry forth the colorations / sonic character of the mains' power amplifier (or follow the chain to the main speakers as much as possible) to the sub to obtain the best integration. As a consequence of this, the mains are usually run full range without a high-pass, which also aids integration.*

    In HT, we would be expected to have better channel management at the front end. There would be no need to utilize the above approach, as it would be utterly ridiculous given the dynamic range / high-SPL / low distortion requirements of HT. Besides I'd probably buy a dozen Vidars (all same amps), all to be fed by a good front end processor.

    *The other option in a two channel setup would be to use separate line level outputs from the preamp, one into the mains' power amp, and the other into the sub plate amp; but in my experience this approach has never worked as well in terms seamless sub and mains integration.

    I also know that the power amp into power amp idea, and carrying forth distortions, may sound like absolute nonsense; but it is what it is.
     
    Last edited: Sep 13, 2017
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  11. Metro

    Metro Rando

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    REL makes some great subwoofers, but speaker level input is a common feature. I've been researching subwoofers for a possible purchase, and all of the ones I've seen (across different brands) have both line level and speaker level input jacks.
     
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  12. SineDave

    SineDave Friend

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    While I can appreciate why you might want to do that, to me it's a rather strange approach. I have significant doubts that anyone can hear the "character" of the amp behind the subwoofer's amplifier, as frequency decrease we get worse and worse at determining subtle differences.

    IMO, it is of far greater importance to manage your bass integration in the time and frequency domains (which we are very sensitive to, particularly time) - and as many hifi systems as I have heard that use the sort of setup you are describing (a couple dozen), I've yet to hear one where I wouldn't consider the bass integration "meh" at best compared to a well optimized/integrated line level subwoofer that's been properly EQ'ed and delayed.
     

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