Search found 464 matches

by izzy wizzy
Sat Oct 20, 2018 5:28 pm
Forum: Everyones Projects
Topic: Filters , poles, interaction, resonance
Replies: 24
Views: 2515

Re: Filters , poles, interaction, resonance

Thought I'd post an update on my travels with glow tubes. I was using one in the line stage/headphone amp. I then tried doing the same in the phono output stage which is also a diff amp like the line stage. I thought it was better ... well it sounded more impressive so I thought, let's live with it ...
by izzy wizzy
Tue Aug 21, 2018 1:50 pm
Forum: Suppliers, recommended or not
Topic: Primary Windings
Replies: 4
Views: 204

Re: Primary Windings

Dunno about Danbury but from an invoice another poster had ...

John Wilkinson - Transformer Designer
Primary Windings
61 Windsor Road
Chichester
PO19 7XG

Cheers,

Stephen
by izzy wizzy
Tue Aug 21, 2018 12:31 pm
Forum: Suppliers, recommended or not
Topic: Primary Windings
Replies: 4
Views: 204

Primary Windings

Another email message board I'm part of mentioned the above. Any experience? Prices seem good.

http://primarywindings.com/

Cheers,

Stephen
by izzy wizzy
Fri Aug 03, 2018 12:49 am
Forum: Valves
Topic: Finished and working - 12 valve all DHT PP 26-71a-45
Replies: 49
Views: 1582

Re: Finished and working - 12 valve all DHT PP 26-71a-45

Impressive work. Love every aspect from schematic to build. Well done!

Cheers,
Stephen
by izzy wizzy
Thu Jul 26, 2018 12:51 am
Forum: Assorted Stuff
Topic: Yorkshire Hi-Fi Club
Replies: 463
Views: 35824

Re: Yorkshire Hi-Fi Club

Oh you mean the one the dealer didn't even know was there ;)
by izzy wizzy
Fri Jul 13, 2018 8:08 am
Forum: Everyones Projects
Topic: Niobium - Valve pre for SS Power Amp
Replies: 44
Views: 2352

Re: Niobium - Valve pre for SS Power Amp

To eliminate the CCS as a cause, you could sub it with a resistor. I like battery bias and use it in my phono. Best place would be in series with the grid so avoiding an input cap. I hate battery bias with a rechargeable in the cathode. Some LEDs have quite a high Z so might contribute more to the s...
by izzy wizzy
Mon Jul 09, 2018 5:09 pm
Forum: Computer Audio
Topic: squeezelite
Replies: 4
Views: 329

Re: squeezelite

picoreplayer uses squeezelite. I use it on all my RPi players for ages now and it is ace. Don't know about the volume issue but I think it uses a number of volume control options https://sites.google.com/site/picoreplayer/home/news

cheers,

Stephen
by izzy wizzy
Wed Jul 04, 2018 8:36 am
Forum: Everyones Projects
Topic: Adventures in LCR Phonos
Replies: 16
Views: 773

Re: Adventures in LCR Phonos

Thanks Stephen, the last attachment was particularly helpful. And as far as I know Thorsten designed the Cole. He also was involved with the design of the Steven's and Billington MC step up, TVC and LCR module. I wish I had got the LCR module back then as they were cheap (comparatively). I regret s...
by izzy wizzy
Tue Jul 03, 2018 9:04 pm
Forum: Everyones Projects
Topic: Adventures in LCR Phonos
Replies: 16
Views: 773

Re: Adventures in LCR Phonos

LCR modules come in 3 varieties. Some with a path to ground from theinput and some not
by izzy wizzy
Tue Jul 03, 2018 6:41 pm
Forum: Everyones Projects
Topic: Adventures in LCR Phonos
Replies: 16
Views: 773

Re: Adventures in LCR Phonos

It looks like Thorsten Loesch designed the Cole or had a hand in it. He used the S&B LCR in his own http://www.izzy-wizzy.com/audio/phono/Toccatafinal6xz.gif He started in another direction earlier in its design http://www.izzy-wizzy.com/audio/phono/Toccata20026xz.gif These cover both choices: drive...
by izzy wizzy
Mon Jun 25, 2018 9:10 pm
Forum: Stacks
Topic: LT Spice Basics
Replies: 5
Views: 801

Re: LT Spice Basics

I use the drop down .asy files from this thread http://www.intactaudio.com/forum/viewtopic.php?t=523 which makes things nice and easy.

cheers,

Stephen
by izzy wizzy
Sun Jun 24, 2018 2:52 pm
Forum: Stacks
Topic: LT Spice Basics
Replies: 5
Views: 801

Re: LT Spice Basics

I have the main program directory on the C: drive as you but keep the sim files in a completely different place on the NAS; in sub dir in my audio folder along with all other things audio. Program association seems to keep things going which is I guess what you did. I use Stephie's drop down tube mo...
by izzy wizzy
Fri Jun 22, 2018 1:21 pm
Forum: Everyones Projects
Topic: Tweeter Amp for OB or Horns
Replies: 97
Views: 4004

Re: Tweeter Amp for OB or Horns

I realise you're using stuff you already have. To get you going first, you could even go resistive load for the ECC40. Not ideal as you see things today. Or you could put a full range choke in there to avoid "issues" if you have one of course. Then once it's going, sub in the planned choke. I like d...
by izzy wizzy
Wed Jun 20, 2018 1:54 pm
Forum: Assorted Stuff
Topic: What's your mains voltage ?
Replies: 61
Views: 2751

Re: What's your mains voltage ?

242V at lunch time on the Kent coast

cheers,

Stephen
by izzy wizzy
Sun Jun 17, 2018 6:32 pm
Forum: Everyones Projects
Topic: Tweeter Amp for OB or Horns
Replies: 97
Views: 4004

Re: Tweeter Amp for OB or Horns

It's actually not quite the first time I've built something that looks like an amp. However it could force me to improve the main power amp packaging a bit ... D'Oh ! The choke ( 10H ) fits nicely inside the box at a 45 degree angle, given that there are wooden reinforcing wedges in each corner of ...