Thread: Marantz MA-500 Bridged for B&W 805S, is it safe?

Quote: Originally Posted by longhornguy Thanks for such detailed answers to my questions. Once again, this forum has helped me make the right decisions in building my HT and also educating me on the inner workings of Hi-Fi electronics. Appreciate the explanations and suggestions. I will definitely stay away from the bridged MA-500's and probably have my eye on an Emotiva XPA-2 or Rotel 1080. I naively was following the...

Thanks for such detailed answers to my questions. Once again, this forum has helped me make the right decisions in building my HT and also educating me on the inner workings of Hi-Fi electronics. Appreciate the explanations and suggestions. I will definitely stay away from the bridged MA-500's and probably have my eye on an Emotiva XPA-2 or Rotel 1080. I naively was following the manufacturer's specs on impedance literally and it...

Manufacture impedance specs mean nothing in my experience. Often, they are seemingly made up from thin air..... Most likely, with the driver configuration your speaker has, it dips to at least 4 Ohms such TLS Guy told you. I would use at least 300 watts at 4 Ohms rated amplifier for those speakers to get great dynamics. If you can afford it, 500 watts would be optimal. I recommend forgetting 'consumer' amps if money is tight. The...

Before saying "No it will not be safe. In bridged mode that MA 500 will need to see 8 ohms, or it will blow up", let's consider some facts: - If you look at most impedance/freq curves you will see the dips typically occur in narrow bands and not always in the power demanding low/mid low frequencies. Manufacturer's quoted 8 ohms nominal would actually be quite useful. - Most mid range amps and receivers can handle such dips...

Before saying "No it will not be safe. In bridged mode that MA 500 will need to see 8 ohms, or it will blow up", let's consider some facts: - If you look at most impedance/freq curves you will see the dips typically occur in narrow bands and not always in the power demanding low/mid low frequencies. Manufacturer's quoted 8 ohms nominal would actually be quite useful. - Most mid range amps and receivers can handle such dips...