Hello Everyone;
You all have great thoughts. Maximizing the audio attributes means working with the system in areas of acoustics, power and signal cabling, power cleansing, etc. Something as simple as furniture placement can reek havoc on depth and width. Vibration control is vital.
In response to Tonyangel, I went right to the manufacturer for the unlisted specs:
Hello,
Thank you for your interest in Emotiva. 4 ohms is not the minimum impedance that the XPR-1 monoblocks are able to support. That is just the lowest power rating that we provide. Customers are using the XPR-1 monoblocks to support Martin Logan speakers such as the Montis which drop to 0.52 ohms at their minimum impedance and the XPR-1 handles them with ease. The XPR-1 monoblocks have a 2.5 kVA toroidal transformer and 240,000µF of secondary capacitance in order to support current swing of demanding speakers. Yes, Thiel speakers do like a lot of current but there are certainly more current demanding speakers on the market and the XPR-1 monoblocks will be able to power them. Since you already have the 20 amp circuits installed there will not be an issue to operate these amplifiers to their full potential. I disagree with this persons comment about being a lower class product as I have personally replaced Krell, Bryston, and McIntosh amplifiers in our customers systems with our amplifier of both the XPR and XPA line of amplifiers. The XPR-1 monoblocks is a fully balanced, fully differential design that is going to compete with other monoblocks 10x their cost. If you have any further questions please let us know. Thank you for your consideration.
Nick Kaumeyer
Sales Representative
Emotiva Audio Corporation