Hi,
I've measured my Quad 306 idle power consumption, which measures 17w. Quad specify that it is 30w. Can someone please confirm what the power consumption is of their 306 at idle? I just want to make sure there isn't a fault. All in circuit measurements check our fine. The sound quality is great in the low end, however, the upper end isn't brilliant.
I've measured my Quad 306 idle power consumption, which measures 17w. Quad specify that it is 30w. Can someone please confirm what the power consumption is of their 306 at idle? I just want to make sure there isn't a fault. All in circuit measurements check our fine. The sound quality is great in the low end, however, the upper end isn't brilliant.
Page 8 of the service manual.
AC QUIESCENT CURRENT: Test under no signal conditions.
240v Typicaly 60mA AC current.
Place a 1R 2W resistor in series with the neutral lead of the mains supply and measure the AC voltage across the resistor. That will give you an accurate measurement of power draw from the amplifier at idle.
Placing the resistor in the neutral lead, reduces the risk of electric shock hazard!
AC QUIESCENT CURRENT: Test under no signal conditions.
240v Typicaly 60mA AC current.
Place a 1R 2W resistor in series with the neutral lead of the mains supply and measure the AC voltage across the resistor. That will give you an accurate measurement of power draw from the amplifier at idle.
Placing the resistor in the neutral lead, reduces the risk of electric shock hazard!
The Quad 306 manual states from 30-250w consumption. But, Thanks for your responses. Glad 17w is right. Thanks
‘30-250W depending on signal level.’ With no signal it’s given by the quiescent current spec above.
Small plug in energy monitors can be inaccurate at very low levels (if that is what you are using) and even more so with a reactive load like a transformer that will be drawing a 'spiky' current as it keeps topping off the reservoir caps each half cycle. The loading on the large transformer at idle is minimal and so the PF (power factor) will be very low.
https://www.electricalvolt.com/why-is-power-factor-of-transformer-is-poor-at-no-load/
