Egglestone Andra 1 tweeter "crossover"

Vector, if that's your goal, I'd dig up 2 pots (potentiometers) of relatively low value (say, NMT 1000 Ohms) and wire one in series with the tweeter BEFORE the high-pass section of the crossover. Adjust it to be wide open (= no resistance), play some white noise (FM-tuner noise works very well) and adjust the pot so that the treble output is down just audibly. Live with that setting for a while to see if it's too much or not enough. Adjust the resistor higher or lower as desired for the sound you want. When you're satisfied, lift one wire from the pots, measure them and average those numbers, and order the resistor values you really need, then solder them in permanently. (I use the Mills noninductive wirewounds from Michael Persy.)

Remember, if you install these resistors AFTER the crossover caps, etc., you'll change the filter point of the crossover.

BTW, if your speaker is ported, you can run the pot's wires outside the box so you can adjust them without opening the boxes.

I've done this very thing to my car's system and also to my main home speakers; it works very well. In fact, I'm about to remove a couple pots from my car system so e-mail me if you want them for the cost of postage.
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Have you considered the possibility that the "bright" might be from the room surfaces and/or speaker positioning?

Thank to Jeffreybehr, Gs5556 and Audio999 for their comments and suggestions. The Andras haven't crossover (the drivers are directly connected to their imputs terminals). I think it is a good idea to use potentioneters intead of fixed resistors. NMT 1000 ohms pots (how many watts?)? Where can acquire them Jeffreybehr? I will take in consideration the room surface and the wall reflexions as well as speakers placements. Thanks again.

You're welcome. That may have been the only useful thing I did all day!

I bought my multiturn 1K pots at Radio Shack. I imagine most electronic-supplies stores would have something like them. Power rating is not important in my experience; tweeters use VERY little power (unless they're ribbons). Only if you're driving them continuously, as with sinewaves or whitenoise, will you need more than a 1-watt pot. Where are you? (I'm in Phoenix, Arizona, USA.) My 'take-outs' will be available in a few days if you can't find them anywhere else.

Your tweeters are driven full range? HUH?????????? The system is designed integral with an amp that is filtered on its frontend? Or the crossover is outboard?
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Jeffreybehr, I must commend you on your posts. You have been able to offer very good advice, and to the point.

That being said, I have been around this speaker enough to know that the treble is not bright. In my opinion, while I do agree with padding down a hot tweeter, the Dynaudio Esotar is definitely not hot, nor is the crossover of the Andra I. Rather, I think there must be something else in the system - room, amplification, source, or cabling which is causing the issue. If I were in this situation, I would leave the crossover alone, and look into what is actually the source of your more than valid complaint.