Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => The Newcomer's Forum => Topic started by: dugg365 on April 01, 2011, 04:45:11 PM
I have an amp that has been converted to a head. It has a speaker out that is currently
the main output, a tap off of that jack was for the speaker in the combo cabinet which no longer exists. The jack is looking for 8 ohms. This leads me to believe it had an 8 ohm speaker and an 8 ohm extension jack. If i'm running a 2x10 speaker cab it should be 16 ohms??
It's likely that by plugging in the ext speaker, it switched off the int one. So, if the one that was inside the cab originally was 8 ohms, you should try to match this. Two 4 ohm speakers in series makes 8 ohms.
If in doubt, go higher with the impedance (for example: 16 ohms (two 8's in series) as opposed to 4 ohms (two 8's in parallel). Lower impedance draws more current from the amp and this can stress it.
WHAT did the amp used to be before it became a head?