Passive bi-amping!! Does the power to the high/mids need to be the same as to the LF?

[MRWILLL]

Hello...


I bi-amp in a passive mode with 225 watts to the highs/mids and 250 watts to the lows. If I increased the power (450 watts) to the lows, would this present any problems? Thanks!!




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[ThomasW]

You can run higher power to the woofers if you want. Yes, you can run lower power to the HFE speakers. 450 watts/side is overkill and a waste of power for normal woofers, unless your HT is the size of a municipal auditorium




theAudioWorx
Klone-Audio

[KennyG]

Actually the pro system we ran for medium venues had a 3,000 wpc Crest amp for the subs, 3,000 wpc Crest on the mid bass, 1,000 wpc crown amps for the mids, and 250 wpc JBL Urei's for the highs!!!
Each stack had two cabinets per frequency band, one channel per cabinet, that's 19,000 watts for a stereo setup!!!
As you can see, your wattage can vary tremendously, and you can mix and match so the strong points of each amp are used to their best advantage.

[Lexman]

Yes, I had long heard that the bass consumed most of the power in a single feed situation. So 450 bass, and 100 treble, is not out of touch with the realm of possibilities.

Lex

[Ricky]

Hi Guys!

My first post here!

Will,
The differences between the wattages for high/mids vs lows is one issue. When I told you that biamping the bridged Citation 7.1's 450 watts with your Nakamichi's 225 watts might create problems...I was referring to the huge potential "gain" differences. For example, for an given SPL level, your lows could be playing 5-6 dB higher than your mids/highs and you have no way of adjusting this.

Pretend the mids/highs are bookshelfs and your lows are subwoofers placed under the bookshelfs. If you could use pink noise to calibrate the speakers, it's very unliked that all four would be set to "zero" on your prepro speaker levels.
When I drive my mains and/or rears with one unbridged citation amp channel, then drive my center with the bridged 300 watts, I need to set the center to "minus 5" or so.

Hi Lex!
How's my Parasound 1500A doing