4 Ω issues
dbayyz
Posts: 2
I have an Onkyo TX-SV727 Specs:
FEATURES:
DISCRETE OUTPUT STAGE: The TX-V940 employs an All Discrete Transistors in the output stage for effortless drive into low impedance loads
POWER COMPONENTS: Dual 6,800 uF Capacitors, Over-Sized Isolated High Power Low-Impedance Transformer and Extruded Aluminum Heat-Sink, which effortlessly drives 4 ohm loads
POWER OUTPUT: 100 Watts RMS x 2 @ 8 ohm/ 130 watts @ 4 ohms
Frequency Response: 20 Hz ? 30,000 Hz
THD: 0.08%
Signal to noise ratio: Tape/CD 100 dB, Phono 80 dB
Phono: MM output 120 mV
Damping Factor: 60 at 8 ohms
Video Dubbing capability
Adjustments: Bass, Treble, Balance
Selective Tone Control
Six Class Classifed tuning
Local/Dx auto/mono/Automatic Precision Reception (APR)
FM Quartz Synthesized Tuner
Battery Free memory backup
Direct Access Tuning
GE Universal Remote: Quality Metal face, lighted buttons works very well
Motorized Volume Control - Via Universal Remote
Audio Input: Phono, CD, Tape 1, Tape 2, Video 1, Video 2
30 AM/FM Presets
Impedance Selector: 8 ohm/4 ohms switch
Speaker Connection: Clip-Lock ? A, B, A & B 4 & 8 Ohm
Dimensions: 18" W x 13" D x 5 7/8" H (45 x 331 x 150mm)
Weight: 20.9 lbs (9.5 kg) without packaging.
Hooked up to MX-250 Cerwin Vegas which are 4 Ω. Does the receiver know the resistance or is there a way to select it? And what can I do to optimize the system?
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FEATURES:
DISCRETE OUTPUT STAGE: The TX-V940 employs an All Discrete Transistors in the output stage for effortless drive into low impedance loads
POWER COMPONENTS: Dual 6,800 uF Capacitors, Over-Sized Isolated High Power Low-Impedance Transformer and Extruded Aluminum Heat-Sink, which effortlessly drives 4 ohm loads
POWER OUTPUT: 100 Watts RMS x 2 @ 8 ohm/ 130 watts @ 4 ohms
Frequency Response: 20 Hz ? 30,000 Hz
THD: 0.08%
Signal to noise ratio: Tape/CD 100 dB, Phono 80 dB
Phono: MM output 120 mV
Damping Factor: 60 at 8 ohms
Video Dubbing capability
Adjustments: Bass, Treble, Balance
Selective Tone Control
Six Class Classifed tuning
Local/Dx auto/mono/Automatic Precision Reception (APR)
FM Quartz Synthesized Tuner
Battery Free memory backup
Direct Access Tuning
GE Universal Remote: Quality Metal face, lighted buttons works very well
Motorized Volume Control - Via Universal Remote
Audio Input: Phono, CD, Tape 1, Tape 2, Video 1, Video 2
30 AM/FM Presets
Impedance Selector: 8 ohm/4 ohms switch
Speaker Connection: Clip-Lock ? A, B, A & B 4 & 8 Ohm
Dimensions: 18" W x 13" D x 5 7/8" H (45 x 331 x 150mm)
Weight: 20.9 lbs (9.5 kg) without packaging.
Hooked up to MX-250 Cerwin Vegas which are 4 Ω. Does the receiver know the resistance or is there a way to select it? And what can I do to optimize the system?
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Onkyo TX-SV727 & Cerwin Vega MX-250
Post edited by dbayyz on
Comments
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If there is a switch generally it is on the back. On a receiver like this it would only serve to current limit the output. You can tell because the power output does not double from 8ohms to 4ohms. This tells me your receiver is probably not the best choice for 4ohm speakers.Main Surround -
Epson 8350 Projector/ Elite Screens 120" / Pioneer Elite SC-35 / Sunfire Signature / Focal Chorus 716s / Focal Chorus CC / Polk MC80 / Polk PSW150 sub
Bedroom - Sharp Aquos 70" 650 / Pioneer SC-1222k / Polk RT-55 / Polk CS-250
Den - Rotel RSP-1068 / Threshold CAS-2 / Boston VR-M60 / BDP-05FD -
Just connect them and don't switch anything if there is a switch. You'll be fine.CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
