Hi I just got two used nad 2040 power amps and a pre amp .I want to use one amp per channel .i don't know how to do this,can some one help me.I have no idea if they are bridgable or not .The back of the amps has a choice of 4 or 8 ohm loads,speaker connections,and a pair of rca plugs>
There are no bridged specs listed so I doubt its bridgeable. I know the 2100 is bridgeable and its stated in the specs (see links below). Personally I'm not a fan of running bridged amps. The damping factor is halved and many amps don't like loads under 8ohms bridged. Depending on your goals you might want to look into bi-amping.
http://207.228.230.231/info/NAD_2240.pdf
http://207.228.230.231/info/NAD_2100.pdf
http://207.228.230.231/info/NAD_2240.pdf
http://207.228.230.231/info/NAD_2100.pdf
My goal is to use two 40 watt power amps and one pre amp to get the best sound from my acoustic research 93 speakers . So if thet are not bridgable .Can they be biamped and how do you do it?I am a newbe to the community so you explanation needs to be a simple one.Thanks for any help you can give me.
Are you referring to the AR-93's? If I'm not mistaken they are not bi-amp ready (They only have one set of binding posts so you would need to physically seperate the crossover network providing the crossover is a parallel type). Even if they had 2 sets of binding posts or you physically seperated the crossover network, this only seperates the LF and HF passive networks. This type of setup can be used to bi-wire or to passive bi-amp. The other solution would be to active bi-amp. With passive the filtering is done AFTER the amplifiers and active its done at the line level. The active setup becomes rather complex and requires an electronic crossover (bypassing the passive crossovers) with considerable skills to tune and balance everything. I'm honestly not sure what to tell you at this point. Do a search on biamping to start learning and decide if this is something you feel like tackling.
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