Adding resistor to 16Ohm speakers when powered by Pass Labs' 30W amp

Accordind to a video by 'Steve Guttenberg Audiophiliac', Nelson suggested putting a 16Ohm resistor with Zu Audio speaker (16Ohm) when driven by First Watt SIT 3. The results were supposedly great.

The Audiophiliac finds bliss with a 30 Watt amp - YouTube

I have a similar situation. My amp is Pass Labs Aleph 3 and my speakers are Rogers LS3/5A 16Ohm. Shall I also put a resistor parrellel to the speaker to reduce the impedance to 8Ohm?