will
|
I have played around a lot with refining and tuning the highs in my system/room just because the quality and quantity of the highs impact the whole of the sound in pretty big ways. And though the "just right" values and the actual make of caps and resistors needed to tune the tweeter output will vary between systems and rooms, and by tastes, finding synergy in how the tweeter is tuned really makes a mark.
When all is in balance, the information and character of the highs mix transparently with the information of the mids and bass, changing their character. Similarly, the levels and quality of bass in the balance effects the mids and feel of the highs. Roughly speaking, more bass...thicker, darker mids. More highs....more open textures, space, edge definition, etc, effecting the mids and bass feel. Over or under-doing the bass or high information defines the feel of the mids, so finding the best balance can be revelatory.
Bob designs speakers to be in balance, and in most cases, the balance he chooses will fit, but each system room is different, and each person's tastes are different, so tuning can be a nice tool. Especially if the sounds does not quite work in your setting.
In this case, hoping resistor value might make burnin more enjoyable, it is easy and inexpensive to explore with standard Wirewound type ceramic resistors. So I am glad you ordered some. Then, later, after burnin looking at better sounding resistors is a good option.
I don't know the cap value the ERRx tweeter has, but likely it does not go into the mids much if any. I have the same tweeters on the HR-1s and MG944s. On the HR-1s I am using 3.63 uf caps, and that rolls off the tweeter at about 8750 Hertz. Pretty high! But changing the overall sound balance by adjusting the quantity and quality of the tweeter information is amazing. By trying different resistor values and qualities, in a revealing system, the mids will feel harsher or smoother...unbalanced or complete, denser or more open...textured or defined, warm or lean, etc.
The resistor being a basic volume control, like different potentiometers, or attenuators, all sound different. It is the same with resistors and caps. This is why the caps and resistors chosen for the tweeter are so important.
So looking at resistors to balance the sound, ultimately the value is very important, but also how it is made will seriously influence on the sound in a revealing system/room. I ended up with 3 ohm Duelund silver resistors here after trying lots of values and several makes.
Once you find the resistor value you like most, you could then put in a Mundorf M-resist Supremes of that value, or either style of Duelund, and have three different midrange feels.
Though I would not go into better resistor exploration until the speakers have several hundred hours or more, playing around with the cheaper and decent Wirewound ceramic resistors to get a more comfortable balance as you wade through burn in is not a risk, and could make the speakers much more enjoyable as they burn in.
If you have some small gauge, flexible copper or silver wire around, to see how much adjusting the tweeter changes the overall sound, you could replace the 15 ohm resistors you have with straight wire and hear the tweeter unattenuated. You may like it better than what you have, and at the very least, it would provide a point of reference as to how the tweeter, unburned in as it is, effects the overall balance of sound.
In both of my speakers, the same tweeters you have were pretty rigid for 100 or more hours...They will smooth out and become more complex, influencing the mids with these qualities.
|