Punchy yes. Wide dynamics, NO.
I've owned a pair in the past and at the time they sounded great on some of the classic McIntosh receivers, Marantz, Yamaha, and even Pioneer and Harmon Karden. I still own a pair of L65 Jubals. Although not the same as the L300s I find them at least a cousin (some here may disagree). I do recall them fondly.
When I play through the L65 Jubals in direct comparison to the McIntosh XR7s and XR5s I have from the same era, the JBLs immediately show their weaknesses, PLUS, they cannot even handle the full music range in anywhere close to the Macs before they "peak out" at high volume. [And I must say that these Macs don't get a lot of Audiophile respect themselves.]
To me they only perform satisfactorily within a limited bandwidth. They sound best with rock and certain jazz music.
I recall the JBLs as good studio equipment but just above average for home reproduction.
I've owned a pair in the past and at the time they sounded great on some of the classic McIntosh receivers, Marantz, Yamaha, and even Pioneer and Harmon Karden. I still own a pair of L65 Jubals. Although not the same as the L300s I find them at least a cousin (some here may disagree). I do recall them fondly.
When I play through the L65 Jubals in direct comparison to the McIntosh XR7s and XR5s I have from the same era, the JBLs immediately show their weaknesses, PLUS, they cannot even handle the full music range in anywhere close to the Macs before they "peak out" at high volume. [And I must say that these Macs don't get a lot of Audiophile respect themselves.]
To me they only perform satisfactorily within a limited bandwidth. They sound best with rock and certain jazz music.
I recall the JBLs as good studio equipment but just above average for home reproduction.