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  1. I'll let the Crown engineers anwser the specifics here, but my understanding is that the main difference is that the "02" series amps (ie: 2402) accept the newer PIP2 cards (ie: PIP2-USP2, PIP2-USP3, etc.) See the text below, it's from a web paged called "The 02 difference" (Which doesn't appear to be on the Crown web site anymore). As I recall, Crown switched from the "00" to the "02" series about 5-6 years ago, so any MA-2400 you find will be at least that old. ================================================ The Macro-Tech 02 Difference The Crown Macro-Tech 02 Series amps are enchanced versions of the Macro-Tech line. They offer the same features and performance of the original Macro-Techs while delivering key added benefits that continue to expand the versatility of this distinct product line. Here are a few examples: Enhanced PIP2 (Programmable Input Processor) connector accepts new accessory modules that tailor the amplifier for specific applications. Balanced XLR and 1/4-inch phone jacks for each channel on the standard PIP-FXQ module.. Full Protection from shorted, open and mismatched loads, general over-heating, DC, high-frequency overloads, and full internal fault protection are provided by our latest protection scheme: "Quad-Mute." HiQnet- compatible. =================================================
  2. My system is currently in a state of flux, but here are a couple highlights: Surround processing is done with a Lexicon processor. From there, the signal converted to balanced +4db by a Genelec line balancer (basically 8 active direct boxes in a 1U). Next, the signal goes through 3 BSS SoundWebs. These provide a 31 band eq for each channel, cross-overs and time correction for the bi-amped speakers, and a couple limiters (to keep from popping circuit breakers). The SoundWebs connect to the amps. The front speakers are a twin 12" with a 2" compression driver. The 4 surround channels are currently 8 JBL 4208 studio monitors (2 per channel). The LFE channel is a pair of single 18" bass bins. These are loaded with extended low frequency raw-frames. With a port tuning of 32Hz, they excel at reproducing the digital low end in movies. These subs are so sick that about the time the MA2402 is drawing 20-25 amps of AC and the thermal limiter is kicking in, the subs are barely past RMS! A bigger amp is in my future. Can you say I-tech? I'd love to tell you that my "work system" is some massive line array system. But the truth is that I sold off most of my live system years ago (after an incident with an amp rack put me in physical therapy for 6 months). By day, I work as a telecommunications consultant; I work with application developers around the world to build/tune their software to run efficiently on Ethernet/WAN networks. I still take the opportunity to do some live sound work, but only when someone else is setting up the gear.
  3. If your looking for audiophile grade sound, most "pro" amps probably won't stack up. They tend to have more signal noise (THD / lower signal to noise ratio) and have more fan noise. A good alternative here is to check out studio reference amps. That said, I am a big fan of using pro amps for a home theater application. If you go to most any major theater and look at what they are running, there is a good chance it will be a pro amp. (Side note here, several series of Crown amps are THX rated). Myself, I've been running Crown power in my home setup for years. 3x CTs1200 for left, center, and right (all biamp), a CTs4200 for the side and surround channels, and a MA2402 for the LFE. My next project is to get them all running IQ. As was stated in an earlier post, there are some challenges with matching "consumer" to "pro" gear. I'm using a consumer pre, then running it through a Genelec active balancer. This unit matches the impedances and boosts the signal level (to +4db pro levels). Since you mention a PC as your source, look into sound cards that have balanced XLR outputs. There are models out there that will produce +4db and will connect directly into a pro power amp. My bottom line opinion: It takes a little extra research and planning, but YES you can use pro amps in a home setup.