Originally Posted by jamiebosco
Thanks for checking in brother!
Hopefully the SubM cabinet ships out soon, I think Mark is working on adding to his already very good packaging to ensure that another shipping accident doesn't happen in transit, as I'm sure that would be equally heartbreaking for both of us!
The discounted 6Kw amp is still just a possibility, I think it may be a customer trade-in or someone that has upgraded to a SP rack amp. I think there is also an increased chance of hum/noise with the 240V 6000w amps, but I would be more than happy to purchase something like the BJC Isolation Transformer if it reduced the noise as the extra power would be nice to have on tap! To be honest though, I'm really needing the Auto On/Off, or 12v Trigger. The LF adjust will also be great or dialling in more of a house curve too
The 6kW amps are a tricky subject. In good conditions, they are pretty awesome, but the huge Voltages switching internally set a slightly higher absolute noise floor. If you have lots of efficient woofers in a very quiet basment, that might bump up the noise floor at the listening position. The amplifiers also expect an effective ground connection. There's a long way between a functional and a highly effective, low impedance ground. Areas with more sandy soil can make that low impedance ground trickier. Combine that with various consumer gear and widely varying grounding approaches, and we have some dead quiet, and some with issues. The original style amplifiers, which are actually MORE expensive to manufacture, having full isolation transformer on the input and less flexible, but very good quality circuitry, had fewer cases of nuisances, but not zero. The 120V 4000W amplifiers have had many fewer issues beyond expected system grounding interactions with gear not using the 3rd pin safety ground. All of the newer ICEpower based amplifiers can operate without the safety ground. You simply can't, or shouldn't, have an amplifier with more than ~2000W continuous without a safety ground. For those wondering, the "1920W" amplifiers used by Power Sound are based on pairing 2 ICEPower 700AS1 modules, rather than a single, large amplifier, where this power is available to drive 2 separate loads, rather than on a single pair of speaker leads. These modules, and most of the newer ICEpower modules are designed to allow operation without a 3rd pin ground connection, but can't provide quite the power available from the proprietary Torpedo designs from SpeakerPower (these are their own circuit design start to finish).
Jamie recalls correctly, that we were waiting on the amplifier mentioned to come back to us, which will be by early next week. His replacement SubMersive is now here ready and waiting. While the new amp features are nice, you could easily pay for a MiniDSP which is dramatically more flexible with the savings. Things to ponder.