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Old 19th October 2012, 11:51 AM   #1
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Default how important is damping factor of 1000

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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Old 19th October 2012, 12:03 PM   #2
Mooly is offline Mooly  United Kingdom
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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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Old 19th October 2012, 12:20 PM   #3
Boscoe is offline Boscoe  United Kingdom
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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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Old 19th October 2012, 12:28 PM   #4
AndrewT is offline AndrewT  Scotland
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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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Old 19th October 2012, 01:01 PM   #5
lineup is offline lineup  Sweden
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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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Old 19th October 2012, 03:58 PM   #6
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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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Old 19th October 2012, 04:31 PM   #7
AP2 is offline AP2  Italy
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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.

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Old 19th October 2012, 05:10 PM   #8
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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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Old 19th October 2012, 06:26 PM   #9
gk7 is offline gk7
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An old but nevertheless good paper:
DAMPING FACTOR DEBATE
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Old 20th October 2012, 12:03 AM   #10
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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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