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what guideline to match pre and amp?
what guideline to match pre and amp?
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Old 31st May 2008, 03:14 AM   #1
milen007 is offline milen007  Indonesia
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Default what guideline to match pre and amp?

someone mentioning about damping factor of each associated gear, whats the guideline for that? some 10 times of the other? pre damping factor has to be around 10x of amp damping factor or vice versa?

or any other guideline?

will tube pre and SS power amp can preserve the tubey sound?
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Old 31st May 2008, 04:04 AM   #2
milen007 is offline milen007  Indonesia
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my pre output impedance is 200ohm while input impedance of my power amp is 500k ohm. thats 2500 x bigger. is this an ideal fit? they are from the same manufacturer. thx
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Old 31st May 2008, 11:10 AM   #3
Gordy is offline Gordy  United Kingdom
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Hi,

From the perspective of impedance loading, then 200 Ohms feeding into 500 k Ohms is excellent.

G.
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Old 31st May 2008, 12:29 PM   #4
tubewade is offline tubewade  United States
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There is generally no need for concern. As long as the input impedance of a device exceeds the output impedance of the preceding device everything will be OK. It is generally recommended to have a minimum ratio of 2:1 and it is usually preferred that the ratio be 10:1 or more.

Wade
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Old 31st May 2008, 12:56 PM   #5
ray_moth is offline ray_moth  Indonesia
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Damping factor is relevant only for the output of the power amp to the speaker. It's the speaker that needs damping, by having a low impedance source.

Think of the speaker as a motor. If a low impedance power source is connected to a motor, then when the power is cut off the motor stops quickly - it is well damped electrically, If the power source is high impedance, then the motor will run on for a while if the power is cut off.
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Old 2nd June 2008, 06:58 AM   #6
milen007 is offline milen007  Indonesia
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so, is that mean that OTL T16 which has 1 ohm output impedance can drive any speaker thats 8 ohm and above?
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