Quote Originally Posted by K-High-Fi View Post
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Is equlizer better or necessory?
Please note i avoid it because i thought adding hardweare and connections between source and preamp would add noise.
Any different thoughts! ...
K, I was speaking of a digital equalizer in my computer music player -- nowadays I listen to computer files (vs. CDs or LPs) almost exclusively. Personally I wouldn't consider an analog equalizer or an digital equalizer box that sits between source or preamp and amp.

Quote Originally Posted by K-High-Fi View Post
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About chokes, are they safe? and shall i use two chokes in parallel or choke in parallel with a resistor? and how many piece i need? ...
Chokes are safe for quasi-ribbon tweeters if you use appropriate values -- I'm not sure about true ribbons. The purpose of a choke -is to prevent RFI/EMI from feeding back from the tweeter/midrange into your amp. I use one myself although I don't think it makes much of a difference in my case. Use a Bourns 5502-RC which is 10 uH, 9 amps max.

The choke and resistor must be in series; (parallel isn't dangerous but the resistor will have little effect).

Quote Originally Posted by K-High-Fi View Post
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Also where i can buy non-inductive resistor of different values? ...
I usually by these sorts of components from Newark.com. Other popular sources are Mouser.com and Digikey.com