Bi-Amping what is the ohms...

Tollaksen
Tollaksen Posts: 71
edited October 2008 in Speakers
My 15 minutes are up (searching the web with no real understanding) so I'll post my question.

When a speaker is rated at 8 ohms (I assume that is with the brass jumpers), What happens to the load on the amp when the jumper is removed and you bi-amp the speaker? I hope that this is not a stupid questions but I can find the anwser anywhere. I assume that the passive crossover keeps the load at 8 ohms to the amp with or with out the jumpers.

What are the total watts the the speaker is reciving with 100 watts to the high and 100 watts to the lows. It can't be as simple and adding the two, can it?

Do the high and lows use different amounts of power?

I have notice that the sound of the material is a lot more punchy (alive, clear) and not as boomy (slow, mixed) , (punchy and boomy, I wish that I had more vocab) when i bi-amped rather than jumped.

Thanks in advance.

Tollaksen
Reciver Pre/Pro - H/K AVR-347
Amplifier - Adcom-7400 5 Channel
Amplifier - Adcom-7400 5 Channel
Speakers - SRT's
Projector - Sony Avl-aw15
Post edited by Tollaksen on
· Share on FacebookShare on Twitter

Comments

  • Systems
    Systems Posts: 14,872
    edited October 2008
    Tollaksen wrote: »

    When a speaker is rated at 8 ohms (I assume that is with the brass jumpers), What happens to the load on the amp when the jumper is removed and you bi-amp the speaker?
    Each amp will only see the load of the section its driving.
    I hope that this is not a stupid question
    Not at all.
    I assume that the passive crossover keeps the load at 8 ohms to the amp with or with out the jumpers.
    Yes the individual load of each driver will be the same with or without jumpers.The drivers don't behave as though they were connected in paralleled when the jumpers are is installed.
    What are the total watts the the speaker is reciving with 100 watts to the high and 100 watts to the lows. It can't be as simple and adding the two, can it?
    Yes you just add power ratings for the specific impedances.Also its essential when bi amping that the amplifiers be the same or atleast have the same gain/input sensitivity or you will have a mismatch between the hi and low frequency ranges.
    Do the high and lows use different amounts of power?
    Yes,bass frequencies especially below about 300 hz requires far more power than what a tweeter would need.
    Testing
    Testing
    Testing
    · Share on FacebookShare on Twitter
  • Tollaksen
    Tollaksen Posts: 71
    edited October 2008
    GV#27 wrote: »
    Each amp will only see the load of the section its driving.Not at all.Yes the individual load of each driver will be the same with or without jumpers.The drivers don't behave as though they were connected in paralleled when the jumpers are is installed.

    Yes you just add power ratings for the specific impedances.Also its essential when bi amping that the amplifiers be the same or atleast have the same gain/input sensitivity or you will have a mismatch between the hi and low frequency ranges.

    Yes,bass frequencies especially below about 300 hz requires far more power than what a tweeter would need.

    Thanks for the responce. Wow. Gone are the days when I just plug wires into the speakers and not think about a thing or even care.
    Reciver Pre/Pro - H/K AVR-347
    Amplifier - Adcom-7400 5 Channel
    Amplifier - Adcom-7400 5 Channel
    Speakers - SRT's
    Projector - Sony Avl-aw15
    · Share on FacebookShare on Twitter
  • Systems
    Systems Posts: 14,872
    edited October 2008
    Tollaksen wrote: »
    Thanks for the response.
    Your welcome.
    Testing
    Testing
    Testing
    · Share on FacebookShare on Twitter
  • treitz3
    treitz3 Posts: 20,119
    edited October 2008
    Tollaksen wrote: »
    Gone are the days when I just plug wires into the speakers and not think about a thing or even care.
    For many folks here, that's where the fun begins.
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
    · Share on FacebookShare on Twitter