Name:    Steve Kennedy
Email:   steve@pacair.com  
Subject: 212-HD 130
Thread:  94
Time:    Thu, 31 May 2001 05:06:37 UTC

Are you saying that EACH DRIVER is a 4 ohm or the combined total of BOTH drivers is 4 ohm?


If the individual drivers are 4 ohm, then you can wire them in series for a total of 8 ohms. This would allow you to run an 8 ohm extension cabinet when running the amp impedance selector at 4 ohms.


Realistically, well made amps with tube output stages (like the Music Man amps) can easily and routinely withstand a 100% mismatch. This means that in the 4 ohm position, it can tolerate from 2 ohms to 8 ohms. In the 8 ohm position, 4 ohms to 16 ohms would be the allowable range.


Since speaker load impedance is not constant with frequency, the impedance is constantly changing and usually only hits its' minimums at extreme low frequencies. This might be a more severe problem if you were playing balls-out on a Bass, but the mismatch range is greater if playing guitar.


Steve