If 500W are specified for a 4 ohm load, you will only obtain 250W for each channel over a 8 ohm speaker. In bridged mode, it is not true that basically one channel drives the upper part of the sine and the other the lower: they operate in push-pull, supplying each side of the speaker with opposite phases so you will obtain the double peak-to-peak voltage value over the load than in the single ended configuration. Double voltage would mean four-times power, so the amplifier surely is not rated for the same load in bridged mode than in single-ended two-channel mode. If minimum load for each channel is 4 ohm in single-ended mode, usually it is 8 ohm for two channels in bridged mode.
So if you have 8 ohm speakers... use it in single ended mode (better reliability also, as Poul-Henning pointed), and you will get 250W per channel. In brigde mode, you could only put the two speakers in parallel if the amplifier is rated for 4 ohm loads in bridged mode. Regards, Javier Jim Palfreyman escribió: > OK I have an interesting but simple problem that has nothing to do with > time. But I'm sure someone on this list will know. And besides I can't be > stuffed finding another list with such a good S/N ratio. > > In my spare time I play in a band. > > I have a 1000W amplifier that can be either two 500W stereo channels or a > single 1000W mono running in "bridged" mode. (Basically one channel > amplifies the upper part of the sine curve and the other the lower.) > > The amp can drive speakers down to 4 ohms. > > I have two 8 ohm speakers. > > The source is mono. > > Do I run each 8 ohm speaker on its own 500W channel? > > or > > Do I run in bridged mode and put the two speakers in parallel onto the 1000W > amplifier? > > Any takers? > > Regards, > > Jim > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > -- ------------------------------------------------------------------------ Javier Herrero EMAIL: [EMAIL PROTECTED] HV Sistemas S.L. PHONE: +34 949 336 806 Los Charcones, 17A FAX: +34 949 336 792 19170 El Casar - Guadalajara - Spain WEB: http://www.hvsistemas.com _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
