Bi-amp front af 7.2

 wernermeyer skrev:

Fordelen ved at bi-ampe på en receiver er at man kan bruge den ene kanal til bassen, og en anden til diskanten. Det betyder at evt. forvrængning i den ene kanal ikke forstyrrer i den anden. Så når din receiver får problemer med at håndtere bassen i den ene kanal, lyder din diskant stadig som den skal i den anden kanal. Men mere kraft får du ikke.

Jeg bi-amper selv på min Anthem mrx 710. her er hvad der står i manualen:

MAIN FRONT BIAMP SETTING:
This can be useful with up to 5.1 speakers in the main zone and no speakers in Zone 2
if the front Left/Right ones allow biamping (not to be confused with biwiring, where two 
sets of cables are used by one amplifier channel).  Bi-amplification is where two amplifier 
channels are connected to one speaker, with one powering the speaker’s woofer section 
and the other the mid/tweeter section.  Speakers that allow this have two sets of connection 
terminals.  The jumpers between the terminal pairs must be removed before the system is 
connected, otherwise permanent damage to the amplifier may result.

Keep in mind that best practice is to use amplification with enough power for the application 
and that the purpose of biamping is to get the most out of existing equipment should a 
situation arise where the amplifier may be at its output limit.  If one channel is doing so, the 
other speaker section, still operating within its limit, is immune from distortion generated by 
the overworked section.  By contrast, in a conventional setup with one amplifier channel 
amplifying the entire range, the distortion that may result, for example, from excessive bass, 
can affect the entire frequency range through the midrange driver and tweeter instead of 
being confined to the woofer.

Common misconceptions are that the purpose of this configuration is to increase maximum 
output, and that the speaker’s passive crossover is subject to excess levels of unneeded 
frequencies, thus wasting the amplifier’s power.  In reality, power delivery outside of the 
section’s frequency range is negligible due to its rising impedance (no wasted power), and 
the total power delivery across both speaker sections is no different than in the conventional 
setup (no power increase)

Sagen er bare, at forstærkeren sender det fulde frekvensområde videre til højttalerne - uanset om de er bi-ampet eller ej. Og er forstærkeren bragt i knæ eksempelvis, fordi den er eksempelvis er udfordret i basområdet, vil det også have konsekvenser for diskantsignalet. 


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