Ivan Beaver wrote on Sat, 13 November 2010 20:38 |
One thing I would like to see that you didn't post-was how well the amps did producing a sine wave for an "extended" period of time. Say 1 or 2 seconds. Yes regular "music" doesn't have usually have durations that long, but electronic music often does, and at very low freq. |
Langston wrote about the Powersoft K10 |
Oh my - this beast is ready for your welding rods and sine waves masquerading as music. One rack space of pure attitude - it's squirrel fans will go into overdrive if necessary, much like the old Crest 9001's, but this amp will just keep belting out continuous power unlike any amp I've ever come across. It also is solid on the Keele short-term tests. |
Phillip Graham wrote on Tue, 16 November 2010 08:27 |
I personally see little point in the extended sine wave tests, unless you were working in a very specific area of music, but your suggestion of a 1 second sine wave test seems reasonable. |
Phillip Graham wrote on Sat, 13 November 2010 16:38 |
A single post that is more useful than a year of issues from any of the trade rags, Production Partner excepted. |
Langston Holland wrote on Sat, 13 November 2010 23:15 |
:Optional DSP card available with FIR filtering, but not on the order of either the Crown HD or Lab PLM series. |
Eytan wrote on the 20th: | ||
Thanks Langston for this great review. What did you actually mean in this comment of the K10 DSP? |
Langston wrote |
The net result of the amp upgrade will be approx. 3dB more output from the same loudspeaker arrays from 200Hz downward. Same truck pack, same weight, same size, but more rig for the gigs. Just need to pony up around $10k (assuming sales of my existing amps) and I’m in. Is 3dB under 200Hz worth 10 grand for my (24) KF730’s and ( TH118’s? Heck yes. |
Lanston also wrote |
As a side point, I think advanced limiter topologies that simultaneously deal with long-term heating and peak mechanical issues of loudspeakers in a sonically pleasing way are the next area of serious improvement in the quest for high SPL and good sound. Driver design will need to go hand-in-hand with this. NEXO is a forerunner here. |
Langston wrote regarding PowerSoft |
Optional DSP card available with FIR filtering, but not on the order of either the Crown HD or Lab PLM series |
Langston Holland wrote on Sat, 20 November 2010 14:35 |
One advantage of this is that you incur less of a latency hit with this approach vs. using high slope FIR filters at the low to mid crossover region. |
John Roberts {JR} wrote on Tue, 16 November 2010 07:00 |
PS: You could do this null in real time, but many amps already do..... look for a flashing red LED. |