QUAD 909 Mono, voltage converting.

KOL69 · 15th March 2009, 03:24 PM

Hello!

I have two QUAD 909 Mono amps that I would like to convert from 220V (Kina), to 230-240V (EC) (I'm not shure if it's required because the voltage in my house is 230V).
The main transformer have 4 wires on the primary side (Black, Brown, Blue and White). Black and Brown are connected to the swich/fuse and the Blue and White are connected together. The transformer is made by ToroidAudio (Noratel UK) and have no markings regarding voltage. I gues it's possible to convert it by mixing some of these wires, but how???

Anyone that can help me?

KOL69

analog_sa · 15th March 2009, 03:54 PM

It sounds like there are only two options if wires are connected together - 110 and 220v. In any case 10v above rated input voltage is not a problem.

15th March 2009, 03:24 PM	#1
KOL69 diyAudio Member Join Date: Sep 2007	QUAD 909 Mono, voltage converting. Hello! I have two QUAD 909 Mono amps that I would like to convert from 220V (Kina), to 230-240V (EC) (I'm not shure if it's required because the voltage in my house is 230V). The main transformer have 4 wires on the primary side (Black, Brown, Blue and White). Black and Brown are connected to the swich/fuse and the Blue and White are connected together. The transformer is made by ToroidAudio (Noratel UK) and have no markings regarding voltage. I gues it's possible to convert it by mixing some of these wires, but how??? Anyone that can help me? KOL69

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15th March 2009, 03:54 PM	#2
analog_sa diyAudio Member Join Date: Aug 2002 Location: Sofia	It sounds like there are only two options if wires are connected together - 110 and 220v. In any case 10v above rated input voltage is not a problem.

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