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Thread: Spectral DMC-30 SV

  1. #101
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    I see the 30SV has a user selectable gain setting of 15 or 21db for each input. Does anyone know the factory default setting?
    Is there an optimum range of volume control (ie 35-55% or 60-80%) for normal listening or is it equal across the board?

  2. #102
    VIP/Donor [WBF Founding Member] ack's Avatar
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    High gain is the default on all preamps and there is a very small loss of resolution at the lower setting. The preamp is very linear and acts like a dynamic headroom control rather than a volume/loudness control.
    Sources: mod. VPI Aries 3;mod. JMW 10.5i/Ortofon A90;mod. Pass XP-25;Spectral 3000SL xport/mod. Alpha DAC;mod. Magnum Dynalab Etude;mod. Revox B-77II Amplification: Spectral DMC-30SV/DMA-400RS Speakers: Heavily mod. MartinLogan (custom Mundorf xover, cabling, woofers; structural mods);mod. REL Cabling: MIT Oracle 50ic,MA-X/Oracle 90.1 Power: MIT Z-Strip, Magnum Z-Trap; Shunyata Black Mamba CX HC cords, Typhon Tweaks: EAR Isodamp c1002 References: Live unamplified music
    System link WBF

  3. #103
    Quote Originally Posted by rjc1845 View Post
    I see the 30SV has a user selectable gain setting of 15 or 21db for each input. Does anyone know the factory default setting?
    Is there an optimum range of volume control (ie 35-55% or 60-80%) for normal listening or is it equal across the board?
    I am aware that this exists, though I believe it’s best to work with the dealer to determine best for your particular system. In prior versions the optimal playback range was more limited, and therefore there was clear benefit in having this done. The new SV is not nearly as sensitive. So, I’d think only the extremes might prove less than optimum.
    Steve Schaffer
    MacMini / QNAP NAS / Sonore microRendu / Berkeley Audio Design Alpha USB and Reference DAC v2
    / Spectral DMC-30SV reference preamp / Spectral DMA-400 RS monoblocks / Wilson Audio Alexia speakers

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