I'm currently using Aleph 1.2 monoblocks on Apogee Studio Grand ribbon speakers (with Aragon Palladium II monos on the subwoofers). These run around 5-6 ohms. Prior to my acquisition of the Studio Grands I ran them with Apogee Duetta Signatures (3-4 ohms).
Both speakers have fairly constant mostly resistive impedance curves and the minimum impedances lie right in the optimal portion of the Aleph 1.2 power/impedance curve.
The Alephs are magic on both speakers. The Studios have much better dynamics than the Duettas and the Aleph/Studio combination provides slam as well as sweetness and delicacy.
The downside is that they are space heaters. Each amp pulls a constant 600 watts from the power lines and most comes back as heat. I need suntan oil and a beach chair for winter listening sessions when the A/C is off.
Both speakers have fairly constant mostly resistive impedance curves and the minimum impedances lie right in the optimal portion of the Aleph 1.2 power/impedance curve.
The Alephs are magic on both speakers. The Studios have much better dynamics than the Duettas and the Aleph/Studio combination provides slam as well as sweetness and delicacy.
The downside is that they are space heaters. Each amp pulls a constant 600 watts from the power lines and most comes back as heat. I need suntan oil and a beach chair for winter listening sessions when the A/C is off.