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Thread: Pre-Amp/Linestage With Subwoofer Outs

  1. #51
    Member Sponsor Addicted to Best! dallasjustice's Avatar
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    Quote Originally Posted by Fitzcaraldo215 View Post
    Maybe. But, I am a dedicated Mch music listener, and I have eliminated the Mch preamp-processor from my system entirely. Actually, Nial gave me the inspiration in some posts in some threads in another forum years ago. I am quite happy, and have been with this setup for a couple of years, a few inconveniences aside. It has been more than well worth it in sonic terms.

    Like dallasjustice, I use JRiver in a 7.1 system. It is my only library and player tool. My DAC is an Exasound e28, which synchronizes with the volume control in JRiver, although I do not know how important that volume control integration is. I doubt it is significant. I am not clear on why he cannot just use the JRiver volume control or why he wants an analog volume control. My own personal goal is to get as much analog processing eliminated from my system as possible. Personally, I think properly designed, bit shifting digital volume controls are superior to most any analog volume control in terms of noise, tracking accuracy, etc. And, that is even well before the typical analog control's mechanical contacts start to get dirty.
    I have been using jriver volume control as well. I think digital volume control is okay, if properly setup. There are a variety of reasons I would prefer to have volume control inside a component. This isn't a thread about what's better; digital or analog volume control. To me, it's more safety/convenience driving this preference toward component volume control. Notice, I say component volume control. I don't say analog volume control. I'm fine with digital volume control.

    The exa is fine, but doesn't function well with the software I use. I think we've talked about that before. It can't do a synchronous in/out. I know you use DIRAC LIVE and it has a method for synchronizing two different clox in/out. But Acourate does not and Audiolense has something to compensate, but I don't really trust it. It's not ideal.

    We can go through the list of MCH DACs, I've seen them all and none of them work, other than pro gear. The problem with pro gear is that it's designed for pro environment. So, it's all mixers. I'm okay with looking at a mixer. I think they look cool and I have learned how to use one. But I don't want my wife to get anywhere near one.

    Believe it or not, I've blown a few drivers over the years. Yes, it's all my fault and I must be the dumbest audiophile on the planet. Looking at a huge mixer which interfaces with at least two additional pieces of software and multiple ASIO drivers before sending several 15hz-24khz logsweeps, one may find that a lot CAN go wrong. When it does go wrong, it's a huge PITA.

    It may be the case that I do as Nyal suggested (offline) and just find some inline resistors to protect myself when I do the sweeps. Then I can use digital volume control for normal listening.

    Michael.
    MUSIC IS GOOD

  2. #52
    Quote Originally Posted by dallasjustice View Post
    No. I have a 6 channel system. There are 6 discrete channels coming out of my DAC (Lynx Hilo). Four of those channels go to subs and then R/L. I am looking for a component which can volume control at least 6 channels. I prefer something which could control up to 8 channels, since I will likely add a couple of rear surround speakers later on.
    I know how dedicated you are to your multi-subwoofer architecture. I also understand that your DAC is limited to 8 channels. BUT, you might be doing an eventual shift to Mch a substantial disservice by ignoring the importance of the center channel. Obviously, on video material, the center carries most of the dialogue. It does that better with a true center speaker. Even so, as a huge Mch music fan, I can tell you that the center channel is quite important. Phantom imagining of the center is several steps down IMHO from having a true center channel. Phantom imaging is not terrible, but with music, the center channel provides not just a better "anchor" to the image center, it also provides better resolution and image depth in that region of high sensitivity where both ears are focused.

    The ideal, of course, is to have a center channel identical to the main LR pair. But, I am quite happy using a similaly voiced (same mfr. and DSP EQ full range target curve), but horizontal center channel. Mine happens to be over my video monitor. I find that better sounding and worthwhile vs. no center in comparative listening. I would not be without it.

  3. #53
    Member Sponsor Senior Member Barry's Avatar
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    To everyone, it would helpful to me, and maybe the group, if you folks could explain your objective, what you're actually trying to do here with multiple subs (Yes, I have read Geddes et al.). I understand that digital FIR filters will give you both flat frequency response and linear phase relative to your mains, but also, that adding subs can smooth frequency response too. Since every room is different, it would help us to understand this in practice - both objectively (with numbers e.g. dB, phase, ms ) and ultimately subjectively (what you're listening for).

    -- When using FIR EQ, why would you add more subs if you already have flat frequency response and linear phase? Is there a sonic tradeoff in your opinion between more subs v. more digital EQ?
    - For your subs, what amount of measurable group delay relative to your mains in ms are you targeting? What have you been able to achieve?
    - At what ms level does group delay for your subs in your room become audible relative to your mains and at what frequencies?

    If I'm asking the wrong questions, please enlighten me.

  4. #54
    Member Sponsor Addicted to Best! dallasjustice's Avatar
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    Mark Levinson's brand new no.526.
    http://m.news.harman.com/releases/ha...nd-phono-stage

    It has sub outs and crossover. It also has digital ins (including Ethernet) with a nice ESS SABRE DAC.

    It would not work for my setup but it's great that Levinson is working to properly incorporate subs into their systems.
    Last edited by dallasjustice; 01-16-2016 at 07:16 AM.
    MUSIC IS GOOD

  5. #55
    Member Sponsor Addicted to Best! dallasjustice's Avatar
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    Volume control

    Nice remote! I can control many basic functions in Jriver by assigning keystrokes to the various buttons/wheels. It works great and volume control is really sweet. It's not wireless but I've given up on wireless solutions.
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    MUSIC IS GOOD

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