question about Traynor bass head and ohms?

[JazzbassJenks]

Hi, so i have a new Traynor dynabass 400h on layaway, and its 400 watts at 4 ohms, 4 ohms minimum impedence, but i cant find anywhere what the wattage is through 8 ohms, does anyone know what it is or how i can figure it out? thank you

[Rick Auricchio]

I just looked at the manual at Traynor's web site (shocking idea), and they say 250w at 8 ohms.