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Search: Posts Made By: snowman_al
Forum: WD Amplifiers 1st December 2018, 08:00 AM
Replies: 10
Views: 264
Posted By snowman_al
Re: Kel84 transformer

Hi Orange light,
Good news about the new transformer.
Wonder if you have a use for the old 'buzzy' one? I'm looking for a KEL84 mains transformer for another project.
PM me if interested, Alan
Forum: Wanted 6th November 2018, 08:37 AM
Replies: 3
Views: 236
Posted By snowman_al
Re: KEL84 Mains Transformer (or similar).

Thanks guys,
This is the amplifier a Magnavox 88-02.
It is a 'low cost' project so I do not want to spend much on it. It is fun rather than high quality. All I have had to do so far is change the...
Forum: Wanted 5th November 2018, 09:54 AM
Replies: 3
Views: 236
Posted By snowman_al
KEL84 Mains Transformer (or similar).

I wonder if anyone has a spare mains transformer for a KEL84 or something similar gathering dust?
I have an American 110 volt, push pull, 6V6 stereo amplifier that I would like to convert to 240...
Forum: WD Amplifiers 24th October 2018, 08:44 AM
Replies: 8
Views: 446
Posted By snowman_al
Re: kel84 halved on two

No seriously?
Where will you 'split' the PWBA? You will have to hard wire instead.
You will need two new chassis etc. as stated.

So there is little choice other than to build from new and...
Forum: WAD General 2nd October 2018, 08:11 AM
Replies: 4
Views: 325
Posted By snowman_al
Re: K5881 bias

Morning Gary and welcome.
Your K5881 amplifier is a type known as Cathode Bias. (Better called Self Bias or Automatic Bias as well.)
The output valves use a fixed value cathode resistor to set the...
Forum: WAD Problems 16th September 2018, 04:46 PM
Replies: 10
Views: 732
Posted By snowman_al
Re: Fixing tear in HDA driver

Looks a good result.
Thing with the latex glue is you can seal the little holes you have left with a couple of brush strokes, letting it set between applications.
Did you colour the paper before...
Forum: WAD Problems 14th September 2018, 10:57 AM
Replies: 10
Views: 732
Posted By snowman_al
Re: Fixing tear in HDA driver

I would try a latex glue (e.g. Copydex) and a paper or thin plastic (cling film?) patch first. It will be light and flexible. Plus, if you mess up it will peel off easily and you can have another go....
Forum: WD Amplifiers 16th August 2018, 05:29 PM
Replies: 11
Views: 630
Posted By snowman_al
Re: K5881PSE schematics needed

If it is missing from the archive (?) I have Supplement No.13 and can scan it for future reference if required by Richard or Greg.
Alan
Forum: WD Amplifiers 15th August 2018, 05:42 PM
Replies: 8
Views: 480
Posted By snowman_al
Re: Speaker switching

If you feel you have to, search for ''B-Tech BT12 2-Way Speaker Control''.
There are two types, try and get the 'one switch' model.

Only detriment to the amplifier would be if you have no...
Forum: For Sale 4th August 2018, 11:52 AM
Replies: 1
Views: 515
Posted By snowman_al
Re: Kel84

Now Sold. Thanks.
Forum: For Sale 23rd July 2018, 03:47 PM
Replies: 1
Views: 515
Posted By snowman_al
Kel84

I have decided to sell on my KEL84. I need some more space and it does not get used as much as it should since I rebuilt an Audio Innovations 500.

I completely rebuilt this one in 2016, so...
Forum: WD Loudspeakers 4th July 2018, 08:02 AM
Replies: 18
Views: 1,099
Posted By snowman_al
Re: stereo imaging nightmare help

Sorry if this is going over previous events, but what have you done to ensure there is not a small source or pre / amp or speaker imbalance?
Have you tried swapping left and right leads round (one...
Forum: WAD Problems 18th June 2018, 08:41 AM
Replies: 5
Views: 740
Posted By snowman_al
Re: Update needed for heater bridge rectifier mod

Hi Greg,
I think the 'or equivalents' covers it pretty well. Specific makes or types are not important.

So plenty of choice out there, for example CPC Farnell have stock of
1N5820 = SC07427...
Forum: General 30th May 2018, 09:02 AM
Replies: 5
Views: 658
Posted By snowman_al
Re: Chinese Stepped Attenuators

I have used several of the 'valab' 23 way attenuators on projects in the past 6 or 7 years. (Years before that I made one of my own from one of the WAD articles. That cost a small fortune in...
Forum: The Coffee Bar 22nd May 2018, 10:49 AM
Replies: 4
Views: 504
Posted By snowman_al
Re: Goonybird-New to Forum...

Yes Welcome.

Bob beat me to it. So which made the best / most noise, the Cadet, the Omega or the inverter squealing...?

Alan
Forum: The Coffee Bar 12th May 2018, 08:13 AM
Replies: 111
Views: 14,390
Posted By snowman_al
Re: Windows 10 Pro

Glad they fixed it for you.

Luckier here, 2 PCs and 1 laptop updated to 1803 (before the 'patch') and they had no issues.
A big plus was they All did their updates first time too which is a...
Forum: WAD General 7th May 2018, 10:06 AM
Replies: 11
Views: 1,142
Posted By snowman_al
Re: WAD Pre II Conversion to Cathode Follower

Zak, Bob,
It really is still there if you enable the 'fix' in your browser extensions.
I have just copied it off there... Alan


http://i66.tinypic.com/amp2sp.jpg
Forum: WAD General 7th May 2018, 07:51 AM
Replies: 11
Views: 1,142
Posted By snowman_al
Re: WAD Pre II Conversion to Cathode Follower

Hi Zak,
The circuit is still there and you can see it if you add an extension to your browser. Look for 'Photobucket Hotlink Fix' or 'Photobucket Embed Fix' and once installed you will see...
Forum: WD Amplifiers 20th March 2018, 10:13 AM
Replies: 47
Views: 3,355
Posted By snowman_al
Re: KEL84XL build

Hi everyone,
These are the pictures from Bonky (aka Richard).
Please give them a 'once over' for him.

http://i65.tinypic.com/23t43te.jpg

http://i63.tinypic.com/25gaz35.jpg
...
Forum: WD Amplifiers 20th March 2018, 08:49 AM
Replies: 47
Views: 3,355
Posted By snowman_al
Re: KEL84XL build

If you are not already sorted.
Happy to take a look and or post a link to your pictures.
You have a PM. Alan
Forum: General 30th January 2018, 04:36 PM
Replies: 20
Views: 1,670
Posted By snowman_al
Re: help tapping screw threads

First you need some 2.5mm drills.
A set of 3mm / M3 taps (3 normally for aluminium, a starter, a middle and a finish) and a tap wrench that fits the square end of the tap. Old boys often hammer a...
Forum: General 4th January 2018, 09:09 AM
Replies: 3
Views: 578
Posted By snowman_al
Re: Valve storage

As Bob says, dry storage is most important.
I've always kept my valves in A4 paper boxes. Cut the bottom section down to about 4 or 6 inches in height and put the lid on. If the valves are not...
Forum: Amplifiers 7th December 2017, 09:32 AM
Replies: 11
Views: 1,482
Posted By snowman_al
Re: Help Required to Find a Transformer

Mark,
Looks as if there is little choice out there other than the AnTek.
Otherwise you could try Terry at Canterbury Windings and have one made?

If you need a 6080 / 6AS7GA, I have a couple...
Forum: Amplifiers 6th December 2017, 08:25 AM
Replies: 11
Views: 1,482
Posted By snowman_al
Re: Help Required to Find a Transformer

Hi,
You cannot use the Hammond 269 in the UK, it only has a 115 volt primary for the US market.
The 369BX has dual primaries and can be configured for 240 volt mains. (Specs:...
Forum: General 16th May 2017, 08:57 AM
Replies: 10
Views: 1,832
Posted By snowman_al
Re: Starting a vinyl collection is it worth it for classical music?

Like you I have all my CD collection on hard drive now (flac) and 90% of my listening is on that format. It is so convenient.

But being a child of the 1950s I was brought up on LPs and still have...
Showing results 1 to 25 of 38

 
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