The Crowns are good amplifiers, and if you can get them for 600 and under, why not?. I would even take a few QSC 4050 hd for that price. Any amplifier will do 2 ohm loads if it is made for it, but if you do not have enough transistors, when you go full power, the more the peaks overtest the max on those transistors the more they slowly break down and wear out.
Qsc was always a company that has bragged about two ohm load capability. For some reason it is a selling feature, but like I have said before, better off working things out so your pushing 3600 watts bridged into 8 ohms rather than 5000 into 4, (two ohm load equivelent. The actual difference in loudness is almost non existent, vs the amplifier wear out that will occur. The only reason the QSC rmx 4050 hd is better for 2 ohm load performance, is because it is simply a RMX 5050 HD with smaller toroidals, and governed to not test the max on the transistors. They did the same thing with the RMX 2450 when they made the RMX 1850 HD. Same amplifier with max power throttled.
There is no Cerwin Vega CV 4000. However HPA makes the 4000, and the American Audio V 5001 is the same unit. This unit has 12 transistors much like the XLS 5000 and QSC RMX 5050 However they left the rest of the amplifier with full balls. 2500 va transformer.
I found it surprising over time to find that all the HPA units provide fully rated toroidals, yet big name manufacturers, who claim they use better parts etc, (without ever telling you what those parts are of course,) appear to use transformers underrated by at least 500 va if not more. This under rating thing I learned from Randy Slone, who provides much unbiased information about amplifiers.
The whole Crest CA series and the QSC series, that are suppose to be their highest quality amps, all have underated transformers to put more money in the pocket of the manufacturer. It is so common place that it is almost impossible to find amplifiers with fully rated transformers, yet all these Cerwin vega, Samson, American audio, and other HPA series version amps have the full monty, for half the cost.
QSC is so tired of incurring the warranty costs from advertising two ohm load capability now, that they now
make amplifiers advertised for 2 ohm separate from 4 ohm, more than they ever did before. Further they
have backed off on the warranty to only three years, making you pay cash up front for the other three.
The costs of advertising and supporting 2 ohm load capability, has turned out to be too much for them, and
I am not surprised. It has always been just a gimmick in the hopes of selling more amplifiers.
There is no such thing as a two ohm stable amplifier, but it is easier for some to SAY, such as behringer with it's ep 4000. After a year, they do not have to worry about your fried amplifier.
A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are
least under rated if at all.
Last edited by johnplayerson; 02-08-2015 at 12:31 AM.