Jump to content



Sign up for a free account to remove the pop-up ads

Signing up for an account is fast and free. As a member you can join in the conversation, enter contests and remove the pop-up ads that guests get. Click here to create your free account.

Photo

Passive biamping


This topic has been archived. This means that you cannot reply to this topic.
1 reply to this topic

#1 of 2 OFFLINE   John*DII

John*DII

    Auditioning



  • 9 posts
  • Join Date: Dec 31 2002

Posted March 24 2003 - 11:00 AM

Is there really any benefit of biamping the speakers in avpassive setup? Sending full range to both speakers from different amps. To throw in a second question, would it be better to bi-wire the speakers.

John

#2 of 2 OFFLINE   Jonathan M

Jonathan M

    Second Unit



  • 267 posts
  • Join Date: Jul 23 2002

Posted March 24 2003 - 11:22 AM

John,

It would be cheaper to biwire, but even cheaper again to single wire.

With passive biamping one must be careful to make sure each amp has the same gain, and each has the same phase (ie. they're both inverting, or both non-inverting) so that the output is that which is desired.

Each amp could have less of a load, as the tweeter amp will be driving a high impedance at low frequencies (Easy), and the woofer amp will be driving a high impedance at high frequencies. This ofcourse is a reactive load (Capacitance for the tweeter amp, inductance for the woofer amp) which it may not like, thus this may be a moot point.

Overall ofcourse, you have more power available. IMO though, if you have a decent amp in the first place, you probably won't notice too much difference.

Biwiring, although some scientific arguments can be made (Mainly to do with ground currents), I have found that there is no audible improvement, just a cost of extra cable. Far better is to purchase a thicker gauge thus minimizing any impedance issues. It's also less cable to purchase and run.

Hope this has been of benefit.
"Price and quality are not correlated"

DIY Home Theatre