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Wim M

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About Wim M

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    Belgium, Temse

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  1. RF-7II Owners Thread

    Agreed. I'd add a separate 2 ch power amp to power those 7s.
  2. Active Bi-Amping/Tri-Amping FAQ

    It is most likely you blow a speaker when it is underpowered. When this is the case and you crank it up to loud levels, the amp will start to distort (clip), and distortion is actually something speakers don't like at all. I don't see any problem bi-amping with the AVR you mentioned, as long as you don't go up to really stupid loud levels. Note that the Denon you mentioned, puts out 95 Watts/ch with only 2 channels in use. If you use all of its channels, this number will decrease significantly. When you connect the rest of the speakers you mentioned, you 'll see the Denon break into a sweat rather soon. This is where it gets tricky as for damaging speakers. I'd recommend adding a separate 2 ch power amp to power your 2 biggest speakers, this will relief your AVR a lot, and make the rest sound cleaner.
  3. Active Bi-Amping/Tri-Amping FAQ

    Yeah, Chris helped us too. I'm still trying to figure out how he came to his results based upon the measurements I sent him. The only thing I can say is that our LSIIs sing like never before since Chris' results are loaded in the Xilica. @Chris A, big thanks! Wim
  4. Active Bi-Amping/Tri-Amping FAQ

    I saw some guys selling their Xilica XP 4080, because they are upgrading to an XD model. I know that the difference between the two models is that the XD models have FIR filters. Did some research on FIR filters but I think it is still a bit over my head. So, without going too much into technical detail, is there an audible difference between the two (XP vs. XD) that is worth the trouble of upgrading? I use an XP 4080 on a pair of bi-amped La Scala IIs and a pair of THT subs, should it make sense to use an XD model on this setup? Wim
  5. Active Bi-Amping/Tri-Amping FAQ

    Hey Maarten, I’ve seen several xp4080s on 2ehands, and it appears there ‘s little interest in them. Wim
  6. What fans do you use as replacements? We use 2 QSC DCA series amps and are looking for replacement fans which are a bit more quiet.
  7. Tuba Home Theatre Low Profile...

    Glad to hear you finally got things running! I'd suggest trying different X-over points, slopes, delays, cut off your mains, etc... I'm sure you'll find a setting which will put a big smile on your face.
  8. DIY Bass cab - KP 480 style

    If I'm not mistaken, I believe he said he uses 48 dB slopes.
  9. DIY Bass cab - KP 480 style

    Jason, I think I'm not completely getting this. If you high pass your La Scalas at 200, and lowpass your THTLP at 45, what do you use in the 45-200Hz range?
  10. DIY Bass cab - KP 480 style

    You 're probably right. It just sounded fun building those extra bass cabs, the only thing I'm missing right now are the passive radiators. In our region you can often hear those JBL drivers in PA applications, and I really love the sound of those 18s, that's why I bought them in the first place. Could you expand this a bit please?
  11. DIY Bass cab - KP 480 style

    Is it because I'm going to put a direct radiator in between two horns?
  12. DIY Bass cab - KP 480 style

    Currently we are running a pair of La Scala IIs combined with a pair of Tuba HTLPs (big thanks goes to @jason str) The LSIIs are bi-amped, time aligned and EQed flat (with the enormous appreciated help of @Chris A) Two years ago I did a DIY project with a pair of 18 "JBL 2242 drivers (specs) which didn't work out very well. The major problem was that I didn't realize the JBLs are bass drivers, and actually not usable for sub applications in a bass reflex cab, where they have problems to keep up with the high efficiency of Klipsch speakers. Also, at that time, I didn't have the proper DSP and amplification. Now I have a Xilica XP 4080, with 2 unused outputs, and a spare QSC DCA series amp. The JBL 2242s are on a shelf in our basement in their original packaging, and I want to put them to use. Klipsch made the KP 480 a number of years ago, a bass cab loaded with an active 18" and a passive 15". They were to go with the industrial La Scalas. So I came with the idea of building a pair of bass cabs in the style of the KP 480, each loaded with a JBL 2242 and a Dayton Audio 18" passive radiator (specs) The bass cabs should have the same footprint as our LSIIs, so the bass cabs can be put under each LSII. Height should be minimum so that the top cab of the LSII is not raised too high. This will give a net internal volume of around 5,8 cu ft. The PR can fire backwards into a corner. I will let the bass cab handle the 40 - 120 Hz region, below 40 Hz can be done with our Tubas. Great idea or a definite no go? Thanks in advance for sharing your thoughts with me!
  13. Tuba Home Theatre Low Profile...

    I have my LSIIs high passed and Tubas low passed all at 55 Hz. To my ears slopes of 48 dB sounded best, I could see this also in the measurements I did when determining delays. 48 dB provided the smoothest response in the critical crossover region, as @jason str already mentioned. Speaking of delays: also an important factor to let a sub blend well with your mains.
  14. RF-7 III amp pairing

    Parasound is indeed a fine choice, certainly with RF 7s, I know from experience. If you really want to add a sub, my vote would lean towards a pair of Klipsch R115 SWs. When you decide to go with a Parasound Halo Integrated you can have your mains cut off somewhere in the 50 - 60 Hz region (the Parasound has a built in crossover). Then you can let the subs handle everything below this freq. I'm sure this will be an impressive combo!
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