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#1 |
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diyAudio Member
Join Date: Jul 2010
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I intend to by CROWN 5002 for my sealed subwoofer system. Its rated 1300W per channel into 8 Ohm. it states a damping factor of 1000 , my question is that would it make significant sonic difference in bass,,,,what if i am compare it with krell FPB 600 ?
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#2 |
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diyAudio Moderator
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Significant difference... no
![]() The damping factor is an electrical "specification" that is pretty meaningless when applied to real world installations. For an 8 ohm speaker that implies an output impedance of 0.008 ohms. So the question is, how do you connect your speaker to the point in the amplifier that the damping factor is measured and quoted at. You need cables that will not add to the 0.008 ohms. Superconducting cables maybe ![]() Only when damping factors are deliberately made low by an amplifier designer (say a DF of 20 or 30) might you begin to experience audible effects.
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------------------------------------------------------- A simulation free zone. Design it, build it, test it. |
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#3 |
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diyAudio Member
Join Date: Feb 2010
Location: England
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Higher damping = better control over the driver = less boom and lower distortion produced by the driver. But unless you have amp inside the same box as the driver it's hard to keep the R low with long cables and connectors on both ends.
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I thought about it once, but then thought again. |
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#4 |
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diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
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Not at all.
DF = 1000 indicates that the amplifier has an output impedance of 8milli-ohms at the test frequency. I guarantee that this same manufacturer will not be honest and reveal the DF over the range 10Hz to 40kHz. Now implement a speaker circuit and make allowance for all the other resistances in that circuit. The effective DF will now be <<1000 and could be as low as 20. Just as good (and arguably better) to start with an amplifier with a DF = 80 +-10% over the 10Hz to 40kHz frequency range. |
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#5 |
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diyAudio Member
Join Date: Dec 2005
Location: the north
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It is not important.
Nelson Pass has designed some amplifiers with rather low DF. Very good amplifiers.
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lineup |
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#6 |
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diyAudio Member
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I don't think that one can describe it in more detail than here:
Damping - Wikipedia, the free encyclopedia as well as here: Damping factor - Wikipedia, the free encyclopedia
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Kindest regards Nico |
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#7 |
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diyAudio Member
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Hi,
The DF values very high, are almost always obtained as a result in solving other things. In my opinion, not to alter the instrumental timbre, especially the bass, the DF should not exceed 200. (i love DF range 40-100) the woofer to reproduce the oscillations contained in the song, not the ones I make up myself, with super fast control. Regards |
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#8 |
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diyAudio Member
Join Date: Apr 2010
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It is only a marketing thing. Do not even bother looking at/thinking about this specification, as it cannot tell you anything meaningful.
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#9 |
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diyAudio Member
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An old but nevertheless good paper:
DAMPING FACTOR DEBATE
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Regards, Georg |
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#10 |
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diyAudio Member
Join Date: Sep 2002
Location: Lakewood, Ohio
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In most cases a "Damping Factor" of 5 will be acceptable.
In all cases a "Damping Factor" of 10 will be good. http://www.cartchunk.org/audiotopics/DampingFactor.pdf
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Kevin |
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