Topic: Receiver shuts down after biwiring using speaker A and B...

[acostaml]

Hello, I biwired my speakers using the speaker a and b option on my yamaha 557. I noticed after a few minutes the receiver shuts down and prompts me of a Check SP cable. So yun yung ginawa ko naisip ko kasi baka shorted yung cables pero malinis naman yungpagkakabit ko. So what i did is lahat sa speaker A option lang tapos di na namamatay yung receiver.

Guys what do you think is the problem?

[ricky]

did you remember to remove speaker plate between speaker posts?

[acostaml]

yup i did i removed it:) cables are all clean...

Q: If you bi wire should it be speaker A and B option?

[av_phile1]

Bi-wiring using the speaker A and B terminals turned ON shouldn't be a problem.  They just engage the connection in parallel which is the same as putting both cable leads on a single speaker A terminal.

[el-el]

what's the impedance of the speakers you're using?

di po kaya you need to change the impedance setting of your 557? 

[acostaml]

what's the impedance of the speakers you're using?

di po kaya you need to change the impedance setting of your 557? 

Im using wharfedale 9.4 on a yamaha 557. Set at 4 ohms

[audibleillusions]

sir

at rxv557
RX-V557 Main Specifications
Maximum Output Power
(8 ohms, 1 kHz, 10% THD)
Front Channels 130 W + 130 W
Center Channel 130 W
Surround Channels 130 W + 130 W
Surround Back Channel 130 W
Minimum RMS Output Power
(8 ohms, 20 Hz–20 kHz, 0.09% THD)
Front Channels 90 W + 90 W
Center Channel 90 W
Surround Channels 90 W + 90 W
Surround Back Channel 90 W
Dynamic Power (1 kHz):
(8/6/4/2 ohms) 120/155/190/235 W
Damping Factor
(8 ohms, 20 Hz–20 kHz) 120 (speaker A)
Frequency Response 10 Hz–100 kHz +0, -3 dB
Total Harmonic Distortion (CD, Front Sp Out)
(40 W/8 ohms) 0.06%
Signal-to-Noise Ratio (CD) 100 dB (250 mV)



diamond 9.2
Specification
 Bass 6.5" 165mm B/M
 Tweeter 25mm tex
 Power 20-100W
 Nominal Impedance 6ohm
 Sensitivity 86dB
 Frequency 45-24k @ -6dB
 Crossover 2.0k
Frequency Fb 45Hz
 Dimensions 223x364x301

[acostaml]

sir

at rxv557
RX-V557 Main Specifications
Maximum Output Power
(8 ohms, 1 kHz, 10% THD)
Front Channels 130 W + 130 W
Center Channel 130 W
Surround Channels 130 W + 130 W
Surround Back Channel 130 W
Minimum RMS Output Power
(8 ohms, 20 Hz–20 kHz, 0.09% THD)
Front Channels 90 W + 90 W
Center Channel 90 W
Surround Channels 90 W + 90 W
Surround Back Channel 90 W
Dynamic Power (1 kHz):
(8/6/4/2 ohms) 120/155/190/235 W
Damping Factor
(8 ohms, 20 Hz–20 kHz) 120 (speaker A)
Frequency Response 10 Hz–100 kHz +0, -3 dB
Total Harmonic Distortion (CD, Front Sp Out)
(40 W/8 ohms) 0.06%
Signal-to-Noise Ratio (CD) 100 dB (250 mV)



diamond 9.2
Specification
 Bass 6.5" 165mm B/M
 Tweeter 25mm tex
 Power 20-100W
 Nominal Impedance 6ohm
 Sensitivity 86dB
 Frequency 45-24k @ -6dB
 Crossover 2.0k
Frequency Fb 45Hz
 Dimensions 223x364x301

Sir what is the point here? So should i set it to 8ohms?

[saltuhin]

most probably when using speaker a+b in bi-wiring your 9.4 it is presenting too low impedance for your amp to handle as sir av has suggested na nagpepresent ng parallel connection sa avr mo. if my memory serves me right magiging 3 ohms na lang and nominal impedance pag nagparallel ka ng dalawang 6 ohm speakers.
better na iconnect mo na nga lang sa speaker a yung both terminals mo to bi-wire.