>>I looked at the anticable site, but it seemed like the autoformers were made for dividing the ohms to a smaller number...8 ohm tap on an amp to 4 ohm speakers...the issue with the super fly's is they are designed for 16 ohm taps and my amp has 8 ohm taps, in this scenario is the autoformer still an option?<<
You're right that the autoformers are intended to multiply the speaker impedance that an amp sees. But if you wire them "backwards," your amp will see 1/2 the Superfly's rated impedance. From Paul Speltz' web site FAQ:
"10) What happens if I run them backwards?
Most everybody uses the ZEROs to MULTIPLY the speaker's impedance by connect the BLACK and WHITE leads to the speaker, and connecting two of the other four leads to the amplifier. In contrast, you can use the ZEROs to DIVIDE the speaker's impedance. This can be used to optimize your speaker's impedance to the rare amplifier that prefers a low impedance speaker, like the Decware Zen tube amplifier that has only a 2 ohm output tap. This can be done by connecting the BLACK(-) and WHITE(+) leads to the AMPLIFIER, and connecting two of the other four leads to the SPEAKER.
-Divide speaker's impedance by 2 = YELLOW (+) & BLUE (-) to Speaker (ie. 8 ohm speaker becomes 4 ohms)
-Divide speaker's impedance by 3 = YELLOW (+) & BROWN (-) to Speaker
-Divide speaker's impedance by 4 = GRAY (+) & BROWN (-) to Speaker
You will notice the only thing that changed is that the connections to the speaker and to the amp are FLIP-FLOPPED...thus making it an impedance DIVIDING autoformer, instead of an impedance MULTIPLYING autoformer.
Please experiment for best sound. As your speaker's impedance is reduced, the Zen amplifier will be able to source more and more power into the speaker down to the maximum power point of 2 ohms (Zen amp). Best sound will be achieved when a balance between most power and "critically" damping the speaker is achieved. Reducing the speaker's impedance to low will under damp the drivers causing an overly blooming bass. Trust your ears, and when you achieve the best sound possible, you are done. An interesting article on critically damping your speakers can be found here: www.otlamp.com/articles/tomcik/index.html"