Hello,

1) I somewhat know the answer to this question but just want to clarify. In order to design the impedance matching, I will need to know the load impedance and the source impedance to begin with. Correct?

2) Let's say I have a circuit designed which is the "load" circuit of my setup.

"I've just bought my budget headphones the HD668B's and the ear pads are a bit stiff and..."

I am learning about characteristic impedance. My question is if the characteristic impedance is 200 ohms at 1000 kilohertz what is the characteristic impedance at 2000 kilohertz.How do I calculate the answer; I can not find the information in the material I am reading.
Regards,
Walter

What is the input and output impedance of the circuit?
Attempt of solution:I can represent the transistors as their effective "on" resistance Ron so the input and output impedance can be derived by simple series and parallel connections of resistors and capacitors.
The problem is the transistors are not on at the same time.

hey, i found this old power amp at my cellar i tried it very quick with a speaker and the thing works... but the output impedance is not written any where.... the thing is so old that i not even know from which trademark that is from.....

now i want to use it but im afraid the impedance from both doenst match....

is there a way to find out the output impedance from a power amp?

cheers

I want to fully understand the following datasheet.....

http://www.tamuracorp.com/clientuplo...ocs/MET-23.pdf

I am trying to get an output wave close to its dielectric strength.

1. Primary Source Impedance. It is the impedance in the primary. Does the CT stand for coil turns? If so, doesn't that go against the definition?

"Hi fellow brothers, so I'm looking for a new headphone, I came across [Tek Syndicates..."

I am under the general understanding that a Bipolar Junction Transistor is a current controlled current source, while a Field-Effect Transistor is a voltage controlled current source. But I don't understand why.

The S4 has a well-known issue where <16 ohm impedance headphones (i.e. Ultimate Ears anything) cause severe crunchy distortion at normal listening levels. I've heard some rumors that a German TouchWiz firmware image has this problem fixed, suggesting that the issue may be software-related.

Does anyone know if it occurs on CM10.1?