I am glad the resistor change has made a difference.
The treble level of the tweeter is what really dictates your listening comfort level. By reducing it, you will raise the volume on the amp and in turn will raise the level of the bass and mids bringing things into balance. You need to try the different options until the tweeter disappears and you no longer hear treble. Just nice smooth music. Or whatever pleases you.
As for the speaker, I’m not sure what your options are. You can go over it again and try to find your mistake or maybe send a detailed picture of the crossover to Troels.
My guess is that you have missed a link or something simple. If possible, change the crossovers over and see if the issue persists in the same speaker or switches to the other narrowing it down to the crossover or a driver.
Yeah, It’s really the only way forward. You need to isolate where the problem is. It could be a faulty component but first you need to narrow it down to the crossover.
I have designed & rebuild a lot of speakers over the years & I’ve always used a SPL meter with a tone generator.
I can’t imagine doing anything with drivers levels & crossovers changes without this.
And reading those last few posts, you are in bad need of this. First thing I would do is check & double check both your cover circuits & components are wired & installed exactly as per Troels schematic.
Your crossover will split the sound into different frequency ranges for the different drivers. So the bass driver will go to, e.g., 90 Hz, the mid driver from 90 to 2000 Hz, and the tweeter takes over at 2000 Hz. The splits are of course not sharp, but there is a slope.
So if you pick frequencies that are not close to the handover frequencies, you should be able to find some that the crossover sends exclusively to one driver.
E.g., if the crossover frequencies are like in the above examples at 90 and 2000 Hz, then a, say, 60 Hz tone should only come out of the bass driver, 400 Hz should only come out of the mid driver, and 4000 Hz should only come out of the tweeter.
Maybe this way you can narrow down which drivers play at less volume in one of the speakers
I use 1/3 octave white sound tones to plot the levels.
See the graphic pic. This show open field (no room) plus close mic in room that shows better how the room affects the levels
This can be developed further to show each individual drivers rise & fall.
After this it gets complicated moving into electrical impedance.
@Retm, there’s really no need to be messing around with a tone generator, you know something is wrong as you can hear it. Troels has already done the hard work and developed a good crossover. All you need to do is make sure it’s wired correctly and you’ll be fine. I recommend to get the crossovers out of the cabinet and study them for a mistake. If you can’t find anything then contact Troels and Michael from Jantzen and send some pictures of your crossover. They are really helpful.
I found the problem! It was on the crossover
The solder did not cover the whole connection and so i had do redo it… now everything is working fine!! Did a small db test again and they have almost the same measurements… my ear can’t hear a difference now.
Now I started to really enjoy the music coming out of the speakers!
Really really happy with the faital! There is a soundstage now and when I close my eyes I can tell exactly where the instrument is coming from. Left, right, middle… I really enjoy this!
And the bass is definitely more present! I think I would be fine selling the svs subwoofer… will figure that out over the coming weeks.
Another phono preamp since the powercord of my Vincent is making strange noises… maybe a rega but I‘m not really liking the looks…
And I would love to get some advice or recommendations for speaker stands… I dont know if I can open a topic in this naim forum since its about a speaker and not about naim gear…
thank you for your interest! Sure thing I will post about my speakerbuild. But don’t blame me I don’t have as many (interesting/good) pictures of my build as @Mark84 does
I will try my best but give me a few more days… very busy right now…
@Retm I’m really glad it all worked out for you! I knew it would be something simple. It’s easy to do and hard to spot. I remember doing it in one of my first builds. You know when it’s right. Same for tweeter adjustment too so make sure you play and get that right. That can only be done by ear. Looking forward to seeing some pictures of your speakers build. Hope you enjoy your Atom.