How many Ohms?

carwashguy
carwashguy Posts: 131
edited March 2011 in Basic Hookup/Wiring Questions
I have the choice between four and six ohm on my receiver setup. Hate to sound dumb but which way is best. Running a pair of RTi A7's through an Onkyo Tx NR1008. Any wisdom is appreciated.
Living Room
LSi 15
LSi7
LSiC
LSiFX
2 EPIK Empire
2 W4S Sx-1000
Monster HTPS 7000 MKII
Parasound 5250
Onkyo PR-SC5508
Oppo BDP-95
Pro-Ject RM 1.3
LG 55 LED

Bedroom
RTi A7
CSi A6
FXi A6
2 PSW 125
Onkyo TX-NR1008
Panasonic 60 Plasma
Post edited by carwashguy on
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Comments

  • blehmbo
    blehmbo Posts: 179
    edited March 2011
    the RTI A7s are rated as 8ohm speakers, so 6 ohms on the receiver should suffice. You don't really have to worry about overheating the amplifier with A7s.
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  • rdb2001
    rdb2001 Posts: 791
    edited March 2011
    That switch really doesn't matter since you have that parasound amp. Your receiver is not powering your speakers.
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  • carwashguy
    carwashguy Posts: 131
    edited March 2011
    True, but upgraded the pre on the Parasound to a Onkyo SC-5508. Have moved the old RTi setup along with the Nr-1008 to the bedroom. So more ohms, more power is being used? The more power the better the sound?
    Living Room
    LSi 15
    LSi7
    LSiC
    LSiFX
    2 EPIK Empire
    2 W4S Sx-1000
    Monster HTPS 7000 MKII
    Parasound 5250
    Onkyo PR-SC5508
    Oppo BDP-95
    Pro-Ject RM 1.3
    LG 55 LED

    Bedroom
    RTi A7
    CSi A6
    FXi A6
    2 PSW 125
    Onkyo TX-NR1008
    Panasonic 60 Plasma
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  • mdaudioguy
    mdaudioguy Posts: 5,165
    edited March 2011
    Yeah.... uh, no, not really.
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  • Tour2ma
    Tour2ma Posts: 10,177
    edited March 2011
    Surprised there's not an 8-ohm default...

    I'm thinking the 4-ohm setting would be current limiting to protect the receiver when connected to lower impedance speakers. And lower current definitely does not head you in the direction of better sound.

    Ditto for the 6-ohm, excepting it would be less limiting.
    More later,
    Tour...
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