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  1. Kerry Armes

    Bi-amping the CSS 3TD-X with DSP

    We've done some additional testing and here is where we are at currently. We've tried numerous different crossover points but right around 2700 Hz seems to be the sweet spot for minimizing off axis flare. This version is slightly smoother off-axis than the version I posted above but much flatter...
  2. Kerry Armes

    3TD-X Inductor Crosstalk Testing

    Ok, here's my take on this whole issue. We already know that inductors will act as a transformer and pass signal in this way. I'm a bit surprised at how far apart the affect is still happening but overall I think this is getting blown out of proportion in terms of any impact. First, in a...
  3. Kerry Armes

    3TD-X Inductor Crosstalk Testing

    There is a 3.0 mH inductor between them that is already at 90 degrees. Tilting one of the ones on the ends would necessitate flipping all of them, which is no different than it is now.
  4. Kerry Armes

    Bi-amping the CSS 3TD-X with DSP

    Yes, having some obstruction or sharp change at the distance of the wavelength is what causes diffraction. That's not what I was saying though. With the crossover at 2.7 kHz - and I haven't checked your math on the wavelength but going by that assumption that the surround is that wavelength away...
  5. Kerry Armes

    Bi-amping the CSS 3TD-X with DSP

    We chose the higher crossover frequency in the passive crossover because it resulted in a better power response and DI than every variation of lower frequency crossovers we tried. For the active, we saw something similar but haven't had enough time to play around to see if this is something we...
  6. Kerry Armes

    Bi-amping the CSS 3TD-X with DSP

    I would go with around a 20-30 uF
  7. Kerry Armes

    Bi-amping the CSS 3TD-X with DSP

    It's set at 10,000 Hz. No, the tweeter is not screechy at all. The 5 dB PEQ there is because there is a peak in the tweeter response that people don't like the look of on a graph. I actually think it sounds better without this. Please note that the mid and tweeter amps are not the same input...
  8. Kerry Armes

    CSS Criton 3TD-X Kit Speaker Review

    I meant 1” + 3/4” for 1.75” total vs double 3/4”.
  9. Kerry Armes

    CSS Criton 3TD-X Kit Speaker Review

    Make sure you chamfer out the back side of the woofer and midrange cutouts to avoid compression/distortion at higher outputs. You could always go with 1" thick MDF (which might have been what we were planning for) instead of a second 3/4" layer.
  10. Kerry Armes

    CSS Criton 3TD-X Kit Speaker Review

    I can’t remember if we were looking at only 1.5” or needed 2.25”
  11. Kerry Armes

    Bi-amping the CSS 3TD-X with DSP

    We are actually working on an active version of the speaker right now. You can try this as a starting point. The last node on the tweeter is at 10,000 Hz. I should also mention that the amps on the tweeter and mid have 2.5 dB more input gain than the woofer amps so you will have to scale...
  12. Kerry Armes

    DIY Home Theater based around CSS Criton 3TD-X + 3TD-XC (a build thread)

    All of those options can work. There are pros and cons to each. If you build it as a sealed enclosure, you won't ever be able to use them in a stand alone two channel system should your situation ever change (or if you just want to screw around to see how it sounds). None of these require a...
  13. Kerry Armes

    CSS Criton 3TD-X Kit Speaker Review

    I definitely find it annoying if the tweeter doesn't have a steep drop off axis. Tweeters like the XT25 or the SB29RDC I'm ok with a little lift there. Broader dispersion in that region with a lift can stand out a lot more to me.
  14. Kerry Armes

    CSS Criton 3TD-X Kit Speaker Review

    Thanks you and appreciate the feedback. I want to reiterate though that the peaking in the woofer and mid that is being measured here is a result of the other drivers not being disconnected during near field measurement. You can see we verified this in a post on our 1TD-X as well...
  15. Kerry Armes

    CSS Criton 3TD-X Kit Speaker Review

    The resistor in the woofer circuit damps the "knee" that can happen sometimes on woofer crossovers and reduces some output bump we would get in the summing around the woofer to mid crossover point. This is a fairly common practice in woofer circuits since you get this benefit and it can also...
  16. Kerry Armes

    CSS Criton 3TD-X Kit Speaker Review

    The one with the 0.47 uF is the correct version
  17. Kerry Armes

    CSS Criton 3TD-X Kit Speaker Review

    No worries and good for you for diving in headfirst. It would be helpful to see the raw files you’re using as well as the impedance and crossover network. There is definitely something off between what you have and the measurements for the center.
  18. Kerry Armes

    CSS Criton 3TD-X Kit Speaker Review

    It had the upgraded crossover in it. The finished version only ships with the upgraded crossover now. We used to offer the option for the standard crossover on finished speakers speakers, but only had a single customer over four years buy any with a standard crossover so we removed the option...
  19. Kerry Armes

    CSS Criton 3TD-X Kit Speaker Review

    This is really just luck that it ended up kind of close to the overall response. The individual driver responses are not actually close to the actual roll-off we have with the crossover. You can see the tweeter is operating with basically full output over essentially its whole bandwidth.
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