posted
Moisture? hehe Damping factor refers to the output impedance of the amplifier in ratio to a given load impedance. Nothing is missing from the amp with only 100 over a amp with 200. Just a difference in design. With damping factors in the 100's I would consider the DF argument rather unimportant and concentrate on other spechs. JMO
posted
Damping factor as Tech man explained has to do with impedance seen by the amplifier. It has to do with the amplifier being able to control the speaker's motion, after the signal has been given, and stop the inertia of the speaker from moving it. It works in relation to impedance, the more impedance seen by the amplifier, the more damping it has, typically amplifier's damping factor is rated at the amplifier's best operating impedance (4-8 ohms). When an amplifier's impedance is dropped, say below the manufacturer's specification, damping of the speaker is for all intensive purposes, eliminated or GONE!! Meaning the amplifier has no control over the cone's movement. How's that guys?
------------------
Posts: 1057 | From: Vancouver, British Columbia, Canada 'eh | Registered: May 1999
|
posted
I'm trying to recall this off the top of my head so I might be wrong but I think damping factor is the load impedance divided by the output impedance of the amplifier. So eli is correct when you halve the load impedance you halve the damping factor
posted
Yes jc2. Like I said it's a ratio. If you change the load impedance the DF changes with it. Halve the impedance (4 to 2 ohm) and you also cut the DF in half (100 to 50)
posted
It's a ratio of moisture (my favorite word:moist) to subwoofers in a Dukk pond...
------------------ members.tripod.com/Audiophyle Ba Chomp, Ba Chewy Chomp, Ba Chewy Chewy CHOMP!! Someday, we'll all look back on this, laugh nervously, and change the subject!!
Posts: 3120 | From: nowhere | Registered: May 1999
|
Even with Damping factor dropping with impedance, it would be a crap amp with a mega low impedance (an unlikely scenario) before it became a real issue...
------------------
Lord Dukk The Big Show The Dukk says: Know your bass: PORT your damn box!! Have HoleSaw, Will Travel!
posted
okay... i know what damping is.... and i know what the benefit is, but whats up with this new kenwood thing.... with their powerslide amps, and dbplus woofs... they say the amps have a damping factor of 9900.... yes, 9,900.. whats the deal there.. would that be useful or not... i think sometimes ppl get into specs too much, and buy something due to high numbers that dont matter is this the case here??
------------------ Punkin out with a killer system. sXe all the way!
posted
The Kenwood probably needs all the DF it can create, especially if it will ATTEMPT low impedance drive stability. It'll probably sound real quiet on the upper range, it's a good rating. Oh, and Damping Factor is an issue that some audiophiles seek to know, and keep in mind too much (of anything) DF isn't too good either. When in doubt, LISTEN.
------------------ ;)
Posts: 1057 | From: Vancouver, British Columbia, Canada 'eh | Registered: May 1999
|
posted
Kenwood achieved this artificialy high DF ratio by doing an active feedback circuit to compensate the amps output to keep the cone under rigid control. I haven't heard one so I don't know if the difference is really dissernable.
posted
I think T-Man is reffering to something like Luxman's Duo-beta circuit. Where 1 negative feedback loop was operating in the DC range, from 0-5Hz, and another was operating from 5-20Khz. This enabled their amplifiers to have spectacular control of the speakers, and was the main reason those amplifiers are so quiet. Or are you reffering to something else Tech??
------------------ ;)
Posts: 1057 | From: Vancouver, British Columbia, Canada 'eh | Registered: May 1999
|
posted
Something similar to that ELI. Only I imagine they only incorporated a single feedback circuit. I don't have experience with the Luxman you mentioned. I believe that DF may only be good with their sub.
posted
I agree with you TechMan, Kenwood probably did it because too many of their amplifiers were being "toasted" and "sauteed", when used to drive lower loads.
------------------ ;)
Posts: 1057 | From: Vancouver, British Columbia, Canada 'eh | Registered: May 1999
|
Printer-friendly view of this topic