How I saved £895 on a PSU for my 401.

[Wakefield Turntables]

I looked into getting a Long Dog Audio PSU @ £895.

The main benefits for buying this PSU are :-

1. You can control the voltage and in theory control / lessen vibration getting into the platter from the motor.
2. You can generate a more or less perfect sine wave for 50Hz which if variable will cause platter speed differences.
3. It generates a clean supply with very little total harmonic distortion.

So what did I do? Well I cheated I used a PS Audio P10 and smart plinth design.

My PS Audio P10 allows me to control voltage to specific plugs. So I now run 220 Volts into my 401 and I decoupled my 401's motor from the main chassis so
the motor generates even less vibration and it still does not get into the platter. This was done via the Martin Bastin plinth. The P10 generates a very clean electrical signal with ~0.1% distortion alongside a near perfect 50Hz sine wave, so virtually nil platter variations. The 401 runs between 33.3 and 33.4 RPM.

So the £895 still sits in the bank and I'm one less box and power cable in my listening room.

[Made in 1968]

I should tthinks so how much they cost.

[Old boy]

Andrew would this cheat work on the Garrard 301 too?

[Wakefield Turntables]

Andrew would this cheat work on the Garrard 301 too?

Can't see why not I have a 301 as well. My 301 does have a Phoenix Engineering Tachometer so platter speed control is within 0.01 RPM.

[graham67]

Excellent solution. I have also used a power inspired 1500ag high works well no I don't it's as good as the p 10. The LDA PSU is better but the power inspired is a cost effective solution that can also be used to power other components.

[Mikeandvan]

I looked into getting a Long Dog Audio PSU @ £895.

The main benefits for buying this PSU are :-

1. You can control the voltage and in theory control / lessen vibration getting into the platter from the motor.
2. You can generate a more or less perfect sine wave for 50Hz which if variable will cause platter speed differences.
3. It generates a clean supply with very little total harmonic distortion.

So what did I do? Well I cheated I used a PS Audio P10 and smart plinth design.

My PS Audio P10 allows me to control voltage to specific plugs. So I now run 220 Volts into my 401 and I decoupled my 401's motor from the main chassis so
the motor generates even less vibration and it still does not get into the platter. This was done via the Martin Bastin plinth. The P10 generates a very clean electrical signal with ~0.1% distortion alongside a near perfect 50Hz sine wave, so virtually nil platter variations. The 401 runs between 33.3 and 33.4 RPM.

So the £895 still sits in the bank and I'm one less box and power cable in my listening room.

Be interesting to see what a decoupled motor on a 401 looks like. Pics please!

[Wakefield Turntables]

Be interesting to see what a decoupled motor on a 401 looks like. Pics please!

No can do sorry. I'd have to completely disassemble the 401, why not talk to Martin Bastin.

[Wakefield Turntables]

Excellent solution. I have also used a power inspired 1500ag high works well no I don't it's as good as the p 10. The LDA PSU is better but the power inspired is a cost effective solution that can also be used to power other components.

Your getting pretty much the same solution. Your getting a near perfect sine wave. Can you control voltage?

[ost_]

Thank you for your explanation Andrew, it makes more sense now. However, unless of course you got a great deal on the PS10 I'd hardly call it saving money!!! ;)

[Wakefield Turntables]

Thank you for your explanation Andrew, it makes more sense now. However, unless of course you got a great deal on the PS10 I'd hardly call it saving money!!! ;)

I already had the PS10 and was thinking about splashing out another £895. A little cable management and better plinth design saved the wedge.

[ost_]

I already had the PS10 and was thinking about splashing out another £895. A little cable management and better plinth design saved the wedge.

Thank you for sharing Andrew, it makes perfect sense. All very informative! :)