Search found 5702 matches

by simon
Fri Aug 03, 2007 1:17 pm
Forum: New Users
Topic: Aha! Found you!
Replies: 73
Views: 56330

Welcome Neal. Nick and Steve make good points. 2. It started to become hard work on the WD forum (IMHO), everytime you expressed an opinion, you were then expected to (or it was demanded) that you justify the opinion. IMHO, life it too short to expect or need everyone to agree with you. Completely a...
by simon
Fri Aug 03, 2007 9:01 am
Forum: New Users
Topic: Aha! Found you!
Replies: 73
Views: 56330

Welcome Tony.

It's rather pleasant here. :)

Simon.
by simon
Fri Aug 03, 2007 8:57 am
Forum: Valves
Topic: 845's
Replies: 11
Views: 12216

Actually, I think they have less of a "sound" than other 300b's, but this can possibly lead to the sound of the rest of the amp being more obvious. Yes, this is exactly what I suspect. I think they may well be inherently quite neutral, which in turn can be less forgiving of what's in fron...
by simon
Thu Aug 02, 2007 11:27 pm
Forum: Valves
Topic: 845's
Replies: 11
Views: 12216

On ther downside, they do sound a bit more sterile, less warm and romantic. You may well be right Nick, but I do wonder whether if they're quite transparent to how they're driven. I've heard my KRs sound quite cool driven by 5693s and a passive, but with a little more drive from Ed's Squeezebox ins...
by simon
Thu Aug 02, 2007 9:14 am
Forum: Headphones
Topic: what Headphone amp do you have
Replies: 105
Views: 140846

Funny, the more I think about PSUs, the more complicated they become. Sometimes simple is better, sometimes not. The phono I'm working on has a little hum. That could be the AC heaters, or HT ripple, or both. I have 3 chokes in the PSU at the moment - perhaps I should try just one and see what happe...
by simon
Thu Aug 02, 2007 8:55 am
Forum: Headphones
Topic: what Headphone amp do you have
Replies: 105
Views: 140846

Ah, okay. The amp's drawing about 40mA so that would make a lot of sense. To keep the hum in perspective it's very small. With my old 414SLs it wasn't noticeable, it's only the 650s which are obviously a fair bit more sensitive where I picked some up. I was interested as much in whether this was HT ...
by simon
Wed Aug 01, 2007 10:20 pm
Forum: Headphones
Topic: what Headphone amp do you have
Replies: 105
Views: 140846

I've had a play with the PSU tonight. Before I had: GZ30 -> 10H 82DCR -> 40uF Sprague -> 390R -> 94uF Cerafine And I've just tried: GZ30 -> 14H 429DCR -> 47uF Cerafine -> 14H 429DCR -> 47uF Cerafine They model pretty similarly in PSUD but the 2 14H chokes give a smaller ripple and approx 10V less HT...
by simon
Tue Jul 31, 2007 1:46 pm
Forum: Everyones Projects
Topic: EL509 OTL Amplifier
Replies: 83
Views: 79302

Nick wrote:Myself AND someone who knew what they were doing :-)
:lol:
by simon
Tue Jul 31, 2007 12:34 pm
Forum: Everyones Projects
Topic: EL509 OTL Amplifier
Replies: 83
Views: 79302

However as soon as the HT is applied to the output tubes BLAM BLAM BLAM BLAM we have a stunningly good low frequency oscillator. and I know you managed to sort Simon's Blatting 2A3 In my case the BLAM BLAM BLAM BLAM was due to lack of gridstoppers on the C3gs and it made the 0A2 VR tubes click like...
by simon
Sat Jul 28, 2007 6:09 pm
Forum: Speakers
Topic: ESS AMT1
Replies: 10
Views: 10805

I used to think my old Linn Keilidhs and Exposure amps were pretty heavy. But single ended valve amps and large full range horns are a different ball game. Now I'm starting to think of my hi fi to be a little like a Land Rover. It's incredibly heavy, is rather large, looks kind of functional (which ...
by simon
Fri Jul 27, 2007 4:54 pm
Forum: News
Topic: Rapid Last Column Day
Replies: 1
Views: 4725

Thanks fo sharing this Andrew. I managed to get my order in just in time. I'd been sat on it for a few weeks deliberating but I managed to save over £20. Enough in fact to build an inverse RIAA stage. :)
by simon
Thu Jul 26, 2007 12:37 pm
Forum: Everyones Projects
Topic: Colin's gm70 Boat Anchor monoblocs
Replies: 88
Views: 73136

Thanks for the perspective Dave. The amp I want to try is James D's circuit - he reckons it's the best sound he's ever achieved with his Quasars. Not sure why he isn't using one now, perhaps the quest to achieve something better? There's not a lot to it in the way of resistors and caps but there are...
by simon
Wed Jul 25, 2007 11:19 pm
Forum: Everyones Projects
Topic: DTBs 6B4G
Replies: 361
Views: 222851

Dave the bass wrote:You got loadsa class Simon, you had those turbo-nutter-XR3i-Ghia-GTI 300B's last time i saw ya.

Now thats class innit :D
Fanks geezer! I'm avin it large. :P

Thanks for the explanation Nick. I might try 10uF and see if I can hear any difference.
by simon
Wed Jul 25, 2007 11:12 pm
Forum: Everyones Projects
Topic: Colin's gm70 Boat Anchor monoblocs
Replies: 88
Views: 73136

Comrade Simonski is dabbling in very uncommunistic practices - we've just put the house up for sale. So all my mdf and clipleads have been packed away for a while. But the phono stage is slowly being fettled, and I've plans to build the mythical ECL82 spud amp, and a Steve Bench type series reg expe...
by simon
Wed Jul 25, 2007 12:32 pm
Forum: Everyones Projects
Topic: DTBs 6B4G
Replies: 361
Views: 222851

Thanks NickG, and a 10uF cap on the lower leg of the PD too. I saw Nick suggest this earlier in the thread. Just wondering how you choose the value of the cap - I've used a similar arrangement on my headphone and phono amps but only used 0.1uF (cos that's what Broskie showed :wink: ). Simon (Junior...