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Σκέψη αλλαγής ATC 19
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<blockquote data-quote="_tzo_" data-source="post: 1058064751" data-attributes="member: 5807"><p><strong>Re: σκέψη αλλαγής ATC 19</strong></p><p></p><p></p><p></p><p><u>Πλεονεκτήματα των ενεργών:</u></p><p>Direct control of each driver by each amp channel </p><p>Simple and easier impedance loading on amp </p><p>No parasitic power losses </p><p>No loss of damping (driver control) </p><p>Less likelihood of clipping with clipping limited to single driver </p><p>Consistent crossover behavior regardless of power level or signal content </p><p>Less loading on each amp with load divided among multiple amps </p><p>Less distortion</p><p>Στα SCM40A υπάρχει και limiter. Και να θέλεις, δεν θα τα υπεροδηγήσεις.</p><p><u></u></p><p><u>Μειονεκτήματα των παθητικών:</u></p><p><u></u></p><p>Generally, the high signal streams require massive components of the frequencyseparating</p><p>filters. These massive components inevitably cause distortions and</p><p>phase shifts. To put it differently: Exactly because the original signal is being</p><p>amplified before it reaches the crossover network, its components (resistors,</p><p>spoolings, condensers, etc.) have to be quite voluminous to be capable to</p><p>withstand the amperage. So, a strong signal hits strong resistances.</p><p>Inescapably, this signal will be impaired and distorted.</p><p> </p><p>The most important specific deprivation caused by passive filters is the so-called</p><p>‛damping factor’. This factor indicates the precision with which an amplifier is able</p><p>to control the movements of the membranes (of the drivers). A bad damping factor</p><p>means that the amplifier is not capable of controlling (the vibrations of) the</p><p>membrane(s) in an exact way. Distortions concerning the sound are inevitable. Up</p><p>to date high-class amplifier achieve excellent damping factors, but the passive</p><p>crossover network impairs this factor drastically. To put it simple: In passive</p><p>loudspeakers, the frequency-separating filters are located in</p><p>between the amplification and the driver units and necessarily cause</p><p>a loss of precision with which the amp can control the drivers.</p><p>The best (and therefore quite expensive) crossover networks available today can reduce this</p><p>impairment but never avoid it. Even the best ones diminish the damping factor drastically,</p><p>on average down to five (yes, 5!) percent of the original value!</p></blockquote><p></p>
[QUOTE="_tzo_, post: 1058064751, member: 5807"] [b]Re: σκέψη αλλαγής ATC 19[/b] [U]Πλεονεκτήματα των ενεργών:[/U] Direct control of each driver by each amp channel Simple and easier impedance loading on amp No parasitic power losses No loss of damping (driver control) Less likelihood of clipping with clipping limited to single driver Consistent crossover behavior regardless of power level or signal content Less loading on each amp with load divided among multiple amps Less distortion Στα SCM40A υπάρχει και limiter. Και να θέλεις, δεν θα τα υπεροδηγήσεις. [U] Μειονεκτήματα των παθητικών: [/U] Generally, the high signal streams require massive components of the frequencyseparating filters. These massive components inevitably cause distortions and phase shifts. To put it differently: Exactly because the original signal is being amplified before it reaches the crossover network, its components (resistors, spoolings, condensers, etc.) have to be quite voluminous to be capable to withstand the amperage. So, a strong signal hits strong resistances. Inescapably, this signal will be impaired and distorted. The most important specific deprivation caused by passive filters is the so-called ‛damping factor’. This factor indicates the precision with which an amplifier is able to control the movements of the membranes (of the drivers). A bad damping factor means that the amplifier is not capable of controlling (the vibrations of) the membrane(s) in an exact way. Distortions concerning the sound are inevitable. Up to date high-class amplifier achieve excellent damping factors, but the passive crossover network impairs this factor drastically. To put it simple: In passive loudspeakers, the frequency-separating filters are located in between the amplification and the driver units and necessarily cause a loss of precision with which the amp can control the drivers. The best (and therefore quite expensive) crossover networks available today can reduce this impairment but never avoid it. Even the best ones diminish the damping factor drastically, on average down to five (yes, 5!) percent of the original value! [/QUOTE]
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