Dynaco A25 Multiple Speaker Hookup

From Sound Thinking DIY - electronic links topics :

http://www.aaroncake.net/electronics/math.htm

QUOTE (itlldue @ August 04, 2009 09:06 pm)

Series adds impedance, parallel inverses.

8 ohms + 8ohms in series = 16 ohms
Two set like that, run in parallel, will get you back to 8 ohms.

You also need to know if your amp series or parallels the A/B switch.

An ohm meter is your friend. Better safe than sorry.

Another calculator link:

http://pr.erau.edu/~newmana/imped.html

Series: LT = L1 + L2

Parallel: LT = (L1L2)/(L1 + L2)