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  #1  
Old 9th October 2017, 05:20 PM
Daft Fader Daft Fader is offline
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Location: Loughborough UK
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Post WAD 300B mono blocks

Hi everyone.

I am trying to locate all PDF documentation on this product.
I am also looking to find a pair of power switches - ideally with the cap tops.

Could anyone help me? Thanks.
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  #2  
Old 10th October 2017, 09:11 AM
Richard Richard is offline
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Default Re: WAD 300B mono blocks

Hello and welcome!

Which monoblocs are they, Push Pull or Parallel Single Ended? (Both look the same externally.)

Drop Matthew an email and preferably a picture of your power switches. IIRC they are simple rotary on/off on the front panel and the switches and chrome knobs should be same as still used on WD PSU3,

sales@world-designs.co.uk

Be careful working inside if you're not experienced as there's 500V in there.
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  #3  
Old 10th October 2017, 12:54 PM
Daft Fader Daft Fader is offline
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Default Re: WAD 300B mono blocks

Hi Richard.

Thanks for your reply.

I have half of what seems a mono bloc instruction manual with 300B PSE so it looks parallel single ended.

The previous owner bypassed the on off switch to always on - apparently because he was running his whole rig through a power conditioner so powered on the whole rig at the socket.

So with this in mind, may I ask a further couple of questions?

Where can I get and how much are the rotary power switches and caps?
What would you say the current value is for a pair of average condition but fully Woking mono blocs (as I need to know what they are worth before investing anymore in these units).

Many thanks again.
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  #4  
Old 10th October 2017, 02:15 PM
Richard Richard is offline
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Default Re: WAD 300B mono blocks

Hi again,

Do you have the valves? A quick check is that,
300BPP used 6au6, 5687, and 2x 300B
300BPSE used 6au6, ECC82, and 2x 300B

If no valves you'll need to check the circuit inside.

Are the switches not there at all? Seems strange the previous owner didn't just leave them switched on at the switches or hardwire them inside.

Anyway, what do you mean by the caps? Not being pedantic but we use caps as short for capacitors so best if we know what you want. Do you mean the chrome knobs for the switches?

Matthew will be able to supply the switches themselves for a few pounds as I've just had a look at a spare one and they are the WD PSU3 ones. The knobs (if it is them you need) will be quite expensive as they are solid with mirror chrome finish so you'll need to ask him.

I sold the pair of PP in the pic maybe 5 years ago for about £550 iirc and the PSE go for similar money. Valves are expensive though so the price will vary accordingly
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  #5  
Old 10th October 2017, 02:31 PM
Daft Fader Daft Fader is offline
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Smile Re: WAD 300B mono blocks

Thanks mate.

Yes all valves present and correct (I am listening to them as we speak with a bit of old soul).

I will undo the front later and have a look - he may had just capped them off and hopefully the switch is behind it.

You be as padantic as you like! I appreciate your help. Yes indeed it is the knob tops I may also need.

I will give him an email once I know what’s inside!

All the best and thanks again. I hope you won’t mind me tapping you for more info if I get stuck.

Great site! Thanks again.
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  #6  
Old 10th October 2017, 08:50 PM
Daft Fader Daft Fader is offline
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Smile Re: WAD 300B mono blocks

Hello. Another question please?

I have been running the amps for several hours now and the rear transformers are hot but the front are cold. If this correct?

Also - what is the maximum input signal as my phone only provides 600mw from the headphone output.

Thanks.
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