Hi....I had AR-5 speakers. 8Ω, 10-inch woofer otherwise similar to the AR-3a. Probably more sensitive but I was able to get them real loud with a Dynaco Stereo 120 with 60wpc. The Rotel is rated 35wpc into 4Ω and would be more than capable of driving the speakers for most listening. When one wants it loud, you need more power. Having more power will allow the use of more bass or the loudness if so desired.
Driver impedances for AR3a?
in Acoustic Research
Posted
Hi....I had AR-5 speakers. 8Ω, 10-inch woofer otherwise similar to the AR-3a. Probably more sensitive but I was able to get them real loud with a Dynaco Stereo 120 with 60wpc. The Rotel is rated 35wpc into 4Ω and would be more than capable of driving the speakers for most listening. When one wants it loud, you need more power. Having more power will allow the use of more bass or the loudness if so desired.