[ABEX]

I have NEAR Inverted Tweeters . I think FOCAL's also made an Inverted Titanium Tweeter. Are the synergy issues the same?

[Danny Richie]

I have NEAR Inverted Tweeters . I think FOCAL's also made an Inverted Titanium Tweeter. Are the synergy issues the same?

I would tend to think so.

[eric the red]

that's exactly the problem Danny-I am getting too much side wall reflection in the room they are in right now but can't change rooms until I move. I have some good silver I/Cs between the amp and pre so I'll try and change some things like the preamp tubes for starters-thanks.

[Marbles]

ETR,

For less than $300 you can try the 8th Nerve room treatments....highly recomended, and you can take them to your new house......

[Danny Richie]

Eric,

Marbles is right. You could even build your own room treatment and take it with you when you leave.

Room treatment can be that best money you spend.

ABEX,

I upgraded a pair of Near speakers for a guy one time. I think they were M 15's. I remember they had a woofer with no suspension and a tweeter with a high Fs.

I threw the old network out a started over as the response was pretty rough and was out +/-3db. Sensitivity bounced between 80 and 85db too.

They left sounding much better and much smoother.

I still have all the data and measurements on them if you are interested.

[BrunoB]

I am a newbie in XO and capacitors. I wanted to find out by my self if a capacitor upgrade is worthwile or not (a capacitor upgrade for my speakers is quite expensive).  Threrefore, I upgraded my tweeter capacitors and  I was so surprised by the results that I would like to share my experience and ask a few questions.

My speakers are VMPS 626 Ribbon with the HET (high energy tweeter). I bought a  bunch of AudioCap Theta to replace the stock capacitors for the tweeters. The capacitor set I bought  is composed of two 1.0 uF (200V), two 0.33 uF (600V) and 10 0.01 uF (600V), all having 10% tolerance. My target capacitance is 1.37uF. For my left speaker, I combined three caps, one of each kind and measured a capacitance of 1.368 uF. For my right speaker, I combined only two caps, one 1.0 and one 0.33 and measured a capacitance equal to 1.367 uF. The sets of capacitors have almost identical capacitance. I installed the new capacitors and let my speakers play pink noise for two days.

Audition. My amplifier is the Sony AVD-S50ES digital amplifier. I played Chesky' "Introduction to SACD", track #6. The two speakers sound very different    . My left speaker treble is much more extended, has more "sparkle" and whereas my right speaker is a bit dull.  Could this difference be explained from the fact that my left speaker has a very small capacitors (0.01 uF) and my right speaker not?
Well, to find out I added one 0.01 uF capacitor to my right speaker. And indeed, now both speakers have this extended treble

What surprises me is  that a small high quality cap, an 0.33 uF AudioCap Theta , does not have an extended treble unless bypassed by a small value cap.
  I wonder

- if this is specific to my speakers?
 - if other capacitors brands (Auricaps, TRT, SoniCaps, MultiCap, ... ) would show the same characteristic?
 - if it would  be beneficial to add another 0.01 uF or may be a 0.001 uF cap?[/list:u]


Thanks,

Bruno

[_scotty_]

I am a newbie in XO and capacitors. I wanted to find out by my self if a capacitor upgrade is worthwile or not (a capacitor upgrade for my speakers is quite expensive).  Threrefore, I upgraded my tweeter capacitors and  I was so surprised by the results that I would like to share my experience and ask a few questions.

My speakers are VMPS 626 Ribbon with the HET (high energy tweeter). I bought a  bunch of AudioCap Theta to replace the stock capacitors for the tweeters. The capacitor set I bought  is comp ...

 Welcome to the weird world that speaker designers deal with. Your capacitors maybe compensating for nonlinearities in the rest of your system. It is hard to know for sure. The speakers  may no longer measure flat in the highest frequencies. You have obviously changed the energy distribution in this region. We can frequently change the sound of something in this hobby and have a very hard time measuring the reason for the change. If it sounds good to you at the playback level you use most often and you do not experience long term listening fatigue I 'd
it doesn't matter why it works.