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About Murmel

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  1. I'm not overly confident in explaining the differences but my guess is has to do with duty cycle and crest factor. When testing amps and voicecoils many use a test signal that somewhat reassemble music which is 33% duty cycle, where 100% duty cycle has much more power density hence the long term tolerable VC wattage is much lower. If you use VERY conservative calculations you use a very high duty cycle signal to measure tolerable long term limiting but the output will suffer and subs not reach their max potential is my take on it. I'm not sure under what conditions b&c came up with th
  2. Let's assume for a second that the 21ipal is as robust of a driver as the 18sw115 within it's given specifications (I'm not sure whether it is or not, it's an older design). I'm considering limiting the 18sw115 to 67% of the nominal powerhandling to be safe for very heavy techno, as I've been running them with these settings for many hundreds of hours. I've even limited them to 81% of the nominal powerhandling for two hours and they did not sound strained during peak hour, would it survive that for more extended periods of use? I don't know. One of the reasons I'm not very keen on trying
  3. I've got a pair of keystrones with 18sw115-8 drivers, I'm generally running them with a driverack pa+ for filters/limiting and a sae pxm 1450 amp which, when paired with a robust power source, is quite a performer. I've been running very demanding techno music (Enrico Sangiuliano, Joseph Capriati and the likes, low crestfactor and continuous basslines) for hours to an end with appropriate filters, 30-100hz for that box, and a limited setting to 87 volts. I've even run them at about 95 volts long term limit for two hours during peak hour at full throttle. That would be equivalent of about 1150
  4. How big is the risk of skram dancing around in a high powered club situation? They have bigger piston area/sqft of cab volume compared to my keystrones, which move around on all floors I've tried them on if nothing significantly weighty is strapped onto them.
  5. Dual loaded or two single loaded? Ricci is in the design process of a single driver version of the Skhorn, don't know when it's gonna be(or if, but probably from the very generous person he is) it's gonna be available, last time I read something about it it was rather close to being finished tho.
  6. Skhorn with one or two ports blocked. Do you have an amp already?
  7. Thanks a lot for that detailed answer! One thing I have in concern, a lot of the venues we tend to work in rarely provide stable 32A feeds, which possibly could favour the ffa10k (seem to be compared to somewhere between a k8/k10 in power) in that regard, if you have good 32A feed I presume k20 is very hard to beat.
  8. Hi Josh & All. I wonder what would be appropriate amp power to justify using most of the potential of 21ipal in this cab, for example if the k20/ffa10k could drive two 1 ohm models wired in series on each side of the amp good enough for it to be worth considering 21ipal, or if it would be considerably better to try and find 2 ohm models(maybe complicated) wired in series and a bridged k20 per cab. I read the cab makes quite a bit of noise with only about 500w of power each driver so I figure it could work rather fine? Thanks!
  9. IPAL loaded that is I presume? Does it dance around in it's own footprint or do the dual-driver-config cancel the forces out?
  10. Hi Josh! Very interesting design thread to follow. Thank you for that With drivers more similarly priced to the 21sw152(21ds115, 18xl1800?) Would there be any benefit using skhorn rather than othorn? Will be interesting to read your notes!
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