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Audio and Video Talk
General Discussion
low attack, low dynamic range, weak soundstage
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<blockquote data-quote="croak" data-source="post: 76374" data-attributes="member: 361"><p>Passive attenuators as volume controls are not as simple as they seem. The role of properly driving the power amp becomes that of your source and it depends on its design and the power amp on how it copes with that task. (and it is imo not a reflection on its quality, many better CDPs are designed as part of a system concept and the system may well include an active pre.)</p><p></p><p>A passive pre/attenuator unit in my experience can in fact be very undynamic sounding.</p><p>If the source has a rugged low impedance output and the pre was poor, passive may sound better but best of breed against best of breed, I still prefer an active pre.</p><p></p><p>A badly chosen pot value and low load impedance vs high source impedance can even affect frequency response.</p><p></p><p>Some Rotel gear inverts absolute phase. (RC960 and RB960 did for eg iirc).</p><p>Try inverting +/- on the speaker cables on either the speaker or amp side for both channels.</p></blockquote><p></p>
[QUOTE="croak, post: 76374, member: 361"] Passive attenuators as volume controls are not as simple as they seem. The role of properly driving the power amp becomes that of your source and it depends on its design and the power amp on how it copes with that task. (and it is imo not a reflection on its quality, many better CDPs are designed as part of a system concept and the system may well include an active pre.) A passive pre/attenuator unit in my experience can in fact be very undynamic sounding. If the source has a rugged low impedance output and the pre was poor, passive may sound better but best of breed against best of breed, I still prefer an active pre. A badly chosen pot value and low load impedance vs high source impedance can even affect frequency response. Some Rotel gear inverts absolute phase. (RC960 and RB960 did for eg iirc). Try inverting +/- on the speaker cables on either the speaker or amp side for both channels. [/QUOTE]
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Audio and Video Talk
General Discussion
low attack, low dynamic range, weak soundstage
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