Forum: WAD General
13th April 2016, 12:21 PM
|
|
Replies: 71
Views: 15,120
Re: WD/WAD PSU PHONO II Choke upgrade
Ok, impressions are there is not a lot of difference. There may be a very slight improvement in clarity / separation of voices and instruments but nothing jaw dropping and I could be imagining it. ...
|
|
Forum: WD Amplifiers
10th April 2016, 11:32 AM
|
|
Replies: 8
Views: 1,969
Re: K5881 - New comer!
If it's an original it may have been built by Nick Lucas, anyhow there where three versions of this amp the Mk I with EF86 input valve, the over sensitive MKII with 7025 SRPP input and the Parallel...
|
|
Forum: WAD General
6th April 2016, 03:59 PM
|
|
Replies: 71
Views: 15,120
Re: WD/WAD PSU PHONO II Choke upgrade
I've only had a very brief listen yesterday Greg and can't say I noted any jaw dropping differences. I need more time with it, I only use it now to power my PhonoII which draw very little current so...
|
|
Forum: WAD General
5th April 2016, 09:40 AM
|
|
Replies: 71
Views: 15,120
|
|
Forum: WAD General
8th December 2013, 12:19 PM
|
|
Replies: 47
Views: 10,517
Re: Feedback fun with K5881 - Re-visited!
Brilliant description Richard! Apologies to David for not getting 'round to answering. There's another route you could take with this splitter design but its a more involved so I won't go into...
|
|
Forum: WAD General
29th November 2013, 06:24 PM
|
|
Replies: 47
Views: 10,517
Re: Feedback fun with K5881 - Re-visited!
V1 is a Cathode follower (DC connected in the K5881) so gain is less than unity, V2 is effectively a grounded grid stage so the gain differs between V1 and V2 hence the different load resistors. The...
|
|
Forum: WAD General
27th November 2013, 11:20 PM
|
|
Replies: 47
Views: 10,517
Re: Feedback fun with K5881 - Re-visited!
There's another tweak you can try, the kit is supplied with equal size anode resistors for the splitter R9/R10 at 150K 2 or 3W. This gives a slight imbalance to the phase outputs at high frequency....
|
|
Forum: WAD General
27th November 2013, 11:06 PM
|
|
Replies: 47
Views: 10,517
Re: Feedback fun with K5881 - Re-visited!
Wow that takes me back! Sheer coincidence finding this thread, I was following a link to another and just hit Todays Posts! I still have this mod on my K5881, and although I don't use the amp much...
|
|
Forum: WD Amplifiers
30th May 2012, 02:06 PM
|
|
Replies: 20
Views: 3,938
|
|
Forum: WD Amplifiers
29th May 2012, 11:02 PM
|
|
Replies: 20
Views: 3,938
Re: Phono 3 Cartridge Loading
Yes, thats right Greg, AFAIK they are 4K7, 10K, 15K, 22K, 33K, 47K...these where the values I had to hand...TBH I only use 47R and 100R for cartridge loading, Ortofon KB at 47R and DL103R at...
|
|
Forum: WD Amplifiers
29th May 2012, 10:50 AM
|
|
Replies: 20
Views: 3,938
|
|
Forum: WD Amplifiers
21st May 2012, 12:14 AM
|
|
Replies: 20
Views: 3,938
Re: Phono 3 Cartridge Loading
YMMV Greg but I prefer a lower load on the Kontra B, currently use 47R with the same SUT you have, its worth experimenting with... even try 10R...
|
|
Forum: WD Amplifiers
17th May 2012, 06:05 PM
|
|
Replies: 19
Views: 7,989
Re: Upgrading WAD Phono 2 to WD Phono 3
With the CCS Greg one thing I found that helped it even more was Richards added decoupling cap and resistor located in PhonoII along with a .1uF bypass cap. Seemed to improve the bass line and added...
|
|
Forum: WD Amplifiers
18th April 2012, 11:21 AM
|
|
Replies: 19
Views: 7,989
|
|
Forum: WD Amplifiers
17th April 2012, 09:10 PM
|
|
Replies: 19
Views: 7,989
Re: Upgrading WAD Phono 2 to WD Phono 3
Whoah there Colin, I only expressed my opinion I didnt say you are wrong :rolleyes: If you like them fine...I don't, I don't think they work in this application, in fact I prefer this cct without...
|
|
Forum: WD Amplifiers
17th April 2012, 05:06 PM
|
|
Replies: 19
Views: 7,989
Re: Upgrading WAD Phono 2 to WD Phono 3
Hi Greg, I use the 5751's and find them very good with low noise. For upgrades did you not put a CCS on the first stage? Fuzzy memory but I thought I made one for you yonks ago...for me this made...
|
|
Forum: News
21st July 2010, 03:45 PM
|
|
Replies: 121
Views: 24,631
Re: World designs closes
Hi all,
I've not posted for a very long time and only picked this up on another forum.
This is a very sad day indeed. WD taught me a lot as did the knowledgeable forum membership I've also...
|
|
Forum: Amplifiers
17th September 2009, 09:00 PM
|
|
Replies: 2
Views: 1,169
Re: Pre II cathode follower cap value
No, not critical Adrian. The original cct from WAD used 33nF, I've tried 33nF, 47nF and 100nF but I can't hear any difference.
--Neal
http://home.freeuk.com/wadfaq/images/PreII_Cathode_mod.jpg
|
|
Forum: WD Amplifiers
7th July 2008, 11:39 PM
|
|
Replies: 1
Views: 1,420
Re: 6.2 or 6.3 ?
It will make no difference whatsoever if it's 6.2 or 6.3. A tolerance of +/- 5% is perfectly acceptable.
|
|
Forum: General
17th June 2008, 02:13 PM
|
|
Replies: 29
Views: 3,944
Re: Burning in
So what's changing Rich? I strongly suspect it's the valves characteristics changinging slightly...
|
|
Forum: General
17th June 2008, 01:49 PM
|
|
Replies: 30
Views: 5,182
Re: new cdplyer or dac?!
Oh I think it is. You can re-clock the SB if you want with a Tent XO, I have as have many others.
|
|
Forum: General
17th June 2008, 09:00 AM
|
|
Replies: 30
Views: 5,182
Re: new cdplyer or dac?!
When streaming to an SB the PC isn't re-clocking anything. It's sending asynchronous data packets (Ethernet) to the SB. The SB strips the Ethernet Frame and re-constructs the data, if it's FLAC...
|
|
Forum: General
16th June 2008, 11:56 PM
|
|
Replies: 30
Views: 5,182
Re: new cdplyer or dac?!
Glad to read you know what you want but if the HD crashes and you have 80Gb worth of stored music then you *will* lose, you will lose time... a lot. Re-loading all that data is a PIA.
You don't...
|
|
Forum: General
16th June 2008, 10:54 PM
|
|
Replies: 30
Views: 5,182
Re: new cdplyer or dac?!
You don't need a super dooper PC to run a SB. There are many entry level servers to be had for under 150UKP new or even lower on the second hand market.
Load up something like Ubuntu Linux,...
|
|
Forum: General
14th June 2008, 10:52 PM
|
|
Replies: 214
Views: 56,332
Re: Fuses!
Lee, that's my site. I set it up ages ago during my moderating days on the old WAD BBS.
I took a BBS backup when things imploded on the old bbs (IE when Nick was still at WAD).
I still have...
|
