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  #1  
Old 22nd February 2020, 03:46 AM
Riggers Riggers is offline
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Location: Brisbane, Queensland. Aus
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Default WD Phono 3 R35

Hi All
After opening up my phono 3 (for the first time in ages) to test square wave response through an inverse RIAA filter recently (having had a good re-read of the build manual) I discovered that I still had the original R35 value fitted (10K 3W) all this time. For the first year or so it was the sole device powered from the WD PSU prior to me building a pre 3. R35 is in series from the power supply and I take it that it compensates for how much current draw the PSU deals with based on what is connected to it.

The manual states that if PSU powers both phono and pre a 1K should be fitted at R35. I have just completed this swap.

My question is is there likelihood of any damage due to running for so long long with high value R35?

Thanks as always
Phil.
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  #2  
Old 22nd February 2020, 03:27 PM
bob orbell bob orbell is offline
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Default Re: WD Phono 3 R35

None, the Phono would have been working at a lower voltage, and would be quite happy, I doubt you will here any difference now you have fitted the correct resistor. Bob
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Old 22nd February 2020, 05:16 PM
bikerhifinut bikerhifinut is offline
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Default Re: WD Phono 3 R35

Quote:
Originally Posted by bob orbell View Post
None, the Phono would have been working at a lower voltage, and would be quite happy, I doubt you will here any difference now you have fitted the correct resistor. Bob
And conversely, if you'd been running the Phono3 on its own with the 1k resistor you'd be very unlikely to cause any damage.
Bobs on the button here.

A.
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