DBX 223xl flaking after 12 years, what crossover to get next?

Discussion in 'Monitoring' started by zerosin, Dec 14, 2019.

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Which crossover to get?

  1. DBX 223xl

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  2. Ashley XR1001

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  1. zerosin

    zerosin Active Member

    Joined:
    Apr 6, 2005
    Location:
    West Michigan
    Question at bottom.

    Channel 1 on my 223xl dropped the lows, like engaging its Butterworth low cut. But it did it all on it's own and the low cut switch operates normally. When I pushed on the faceplate on ch1 side, the lows came back, until I let off. So odd.

    So I disassembled the whole thing, the XLR jacks sprung back towards the IC when unscrewed from the chassis. Yikes! The IC is anchored to the chassis in the middle and then the front pots and rear jacks are each screwed to the front and rear plates, respectively. The tension is notable, and for old school tin soldering and all that heating and cooling with vibration. All the traces and joints looked good.

    So, I put it back together and it works. Like I trust it now, but at least when it goes bad it is obvious. That's an engineer's blessing. I think I notice some distortion, after 12 years the caps are probably a bit dry. I can patch my Apogee direct to the DBX and that feeds the KRKs through about 4 feet of Mogami Neglex. The sound is amazing but both the KRKs and the DBX are older now. I recapped the major and secondary cap sets on the 6s, that helped with presence. I can definitely notice bypassing my Soundcraft mixer, also 12 or so years old, and going direct to the DBX. All gear has light use and had been behind a Furman AR-1215.

    I can tell the difference between better highs from my Shure SRH840s plugged into my Apogee and those of the Rokit 6s though it via the DBX crossover. So, I'm wondering if I should replace the crossover, at the very least with a new model of the same. As my ears are trained for it. I was also looking at an Ashly XR1001, thinking it may give me more sculpting ability when tuning the room. I have some treatment but have not measured yet, all by ear for now.

    I may get a Macike Big Knob to switch between the Apogee direct to the KRK 6s or the Apogee direct to the DBX. Then I can tell if the DBX is a limiting factor or not. And, how much any crossover I add will make vs going direct to monitors without the sub. Will also come in handy because I need a second speaker set on my left hand keyboard stack.

    Any thoughts? Until I can remodel the room I'll wait for the expensive monitoring gear/reference monitors, trying to get the same or a bit better. Maybe a tick above what my monitors can reproduce. I'll get some reference monitors later and set them to patch direct to my Apogee for detail work and troubleshooting.

    The right wall in the pic is studded but has only a thin plywood, it needs to get drywalled. Thinking of a combination sauna/vocal/foley room on the other side.
     

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  2. kmetal

    kmetal Kyle P. Gushue Distinguished Member

    Joined:
    Jul 21, 2009
    Location:
    Boston, Massachusetts
    Home Page:
    Does the krk sub have a crossover built in, like the jbl and yamaha models in its class.

    If so i don't see any reason for an external crossover.

    Id also be wary of the mackie big knob. I used it along with apogee conversion and it significantly degraded the sound. Perhaps the new model has improved but i think its something to pay close attention to. SPL and Coleman both make good monitor controllers at a relatively lower cost than the grace, cranesong, and dangerous models.

    Since monitor controllers need to be high quality to preserve your signal, they can't effectively be "cheap". Its for this reason i think its best to avoid them and just use the interface volume functions, unless you have several pairs if speakers and high end converters, where a monitor controller can save channels and cash.

    Some subs have a remote on off switch, some might pass signal while powered off, so you can toggle that way.
     
  3. zerosin

    zerosin Active Member

    Joined:
    Apr 6, 2005
    Location:
    West Michigan
    Thanks. Yes, the Rokit 10 has a built-in analog crossover but I noticed it muddied the sound instantly so I added the 223xl. I noticed the improvement immediately. I need to do some A-B'ing of the KRKs through the 223xl and direct from the Apogee Duet 2. Recapping the Rokit 6's with Nichicon audio grade caps brought out the mid presence and highs are solid at all volumes, I'm wondering if the 223xl is the weak link now.

    I suppose I'll make the monitors patchable separate from the crossover to start. The 223xl is affordable enough, I may pick up a fresh one to see if mine's aged noticeably. Also time for an oscilloscope.
     
    kmetal likes this.
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