hooking a twin reverb to a bxr 4x10 cab

sorrow503 · Newbie Alert Joined: 29 Jul 2008 Posts: 4

i have a twin reverb that is 260 watts.the extention speaker is 85 watts at 4 ohms total.my fender bxr cab is 8 ohms 300 watts per eia.is it even a good idea to hook these together?ive never hooked a combo amp to a cab before,any help is appreciated

davidmenke · Newbie Alert Joined: 28 Jul 2008 Posts: 3

One Definition of wattage:
RMS stands for "Root Mean Square", which is fancy mathematical formula for finding the average amount of power an amplifier can continuously produce. There is no legal standard for calculating RMS watts for an amplifier. Most amplifier makers get a "UL" Rating from the Underwriters Labratories to obtain the most 'true' RMS rating.

Since most amps sound their best when they are 'cranked', some musicians look at the Peak wattage more than the RMS rating. Also, tube-amplifiers are usually not rated by RMS.

Another definition:
Amplifier watt ratings are determined by a calculation called “root mean square,” or RMS. It simple terms, RMS is a measurement of the average, or “effective,” voltage your amp can produce continuously under normal playing conditions without clipping (what happens when you crank up your amp and it starts to distort). Some manufactures give their amps a power rating that’s closer to the peak output—that is, the highest wattage that the amp is capable of producing. This isn’t a very accurate way to measure wattage, because amps don’t operate (or shouldn’t be operated) at peak levels for an extended period of time. If you were to operate an amp at its peak output, I assure you, not only would your tone suffer but the amp itself, including its speaker, would burn out very quickly.

The Fender Twin Reverb is typically 85watts RMS and when purchasing speakers, follow the RMS ratings.