Recent content by dkfan9

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    Review and Measurements of Sony STR-ZA1100ES AVR

    Actually I'm more interested in the lossless codecs, and not so much the codec performance (which should be perfect in itself), but the signal processing performance of AVRs when decoding lossless content. I'd like to see what, if any, additional noise and distortion is produced relative to an...
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    Review and Measurements of Sony STR-ZA1100ES AVR

    @amirm I'm not sure how to interpret this comment--THD+N for amp looks ~7dB worse with digital input vs RCA direct (and ~9dB worse than the pre-out). Almost like coherent summing of the two D+N numbers plus a little extra. Was the digital measurement taken in direct mode as well? I realize this...
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    Powerline noise on hifi linear power supply ?

    I have no technical answer but some practical experience. In a rented house, the router was placed near the AVR (Denon X2100W). Powerline adapter was run to a printer and/or second router upstairs. I don't remember if the router, adapter, and AVR were on the same or different outlets. No noise...
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    How far have ss amps really come in the last twenty years??

    I wonder if the situation would be different in a wider room with more separation, where dispersion plays more of a role to overall sound and the sound sources are further apart.
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    Review and Measurements of Paradigm PW Amp

    Setting 80hz on both looks correct to me as well. Looks like those graphs should cross properly.
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    Review and Measurements of Purifi 1ET400A Amplifier

    And 2-10hz is still more beneficial than 20+kHz. Where and when it's there in high quantities (and intended?), it's perceptually significant. A number of folks at AVS have reference level sub 10hz reproduction as a significant system aim. Unless our systems are also meant to entertain pets. I...
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    How far have ss amps really come in the last twenty years??

    Don't feel bad. Plenty of folks who have no desire for tube equipment, including I would guess many here, prefer some sort of house curve, and a house curve is a distortion by choice and by definition. Once you stray from recreating the recording as put on disc, you're into the subjective weeds...
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    How far have ss amps really come in the last twenty years??

    And then there's mating with speakers, rooms, systems, and listening habits: how the amp performs across various loads, resistive and reactive; the speaker's own distortion profile--whether those distortion products are simply reproduced or further distorted at the power levels used; and any...
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    How far have ss amps really come in the last twenty years??

    The Premier 12 looks pretty similar to the one I linked, with a higher output impedance. The Eico looks quite colorful. Impressive scale on the tone controls. All three have relatively high bass distortion, the Eico especially. If you like the sound these amps are giving you, I can see why you...
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    This audio cable business is getting out of hand...

    "It's one thing" is meant here to indicate surprise--it's not often low dollar cables spread cable myths so prominently. Break-in is the myth here--directionality is a property of the cable @amirm purchased, due to bonding of the shield at one end and not the other.
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    How far have ss amps really come in the last twenty years??

    Oh, and akin to @MattHooper's disappointment with missing low frequency richness when trying out solid state amps, sometimes you find people disappointed with subwoofer upgrades when perusing forums. Better subwoofers have lower harmonic distortion, and thus produce a little less volume at a...
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    How far have ss amps really come in the last twenty years??

    Couldn't get the link to paste from my phone. Here it is: https://www.stereophile.com/content/conrad-johnson-premier-eleven-power-amplifier-measurements Also added into the original post
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    How far have ss amps really come in the last twenty years??

    I don't know what CJ amp you have but here is a set of Stereophile measurements for a CJ Premier Eleven stereo tube amp from 1994. The low end roundness and warmth you speak of sounds a lot like the high harmonic distortion at LF. SS amps won't have this, and frequency response EQ won't...
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    Review and Measurements of Benchmark AHB2 Amp

    Ok thanks for the clarification. I swear I learn more on this forum... high signal to noise ratio here.
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    Review and Measurements of Benchmark AHB2 Amp

    Bias voltage? Or is that only present at higher frequencies or not at all in a class D amp?
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