Search found 11710 matches

by Nick
Wed Jun 26, 2019 8:44 am
Forum: Everyones Projects
Topic: Inverted OTL with 6SN7/6AS7
Replies: 7
Views: 143

Re: Inverted OTL with 6SN7/6AS7

I would guess a DC servo with protection diodes at the front to cope with higher than rail voltages, and then use the output of that to drive a LDR to replace the 250k resistor in your circuit may work.
by Nick
Mon Jun 24, 2019 5:31 pm
Forum: Your Fave Artists
Topic: What Are You Listening To Right This Minute?
Replies: 3236
Views: 234439

Re: What Are You Listening To Right This Minute?

West Coast smooth AOR sounds
Ignoring the fact that Steely Dan were about as much a New York band as you could get. :-)
by Nick
Sun Jun 23, 2019 9:59 pm
Forum: Beginners
Topic: Phono Hum
Replies: 10
Views: 148

Re: Phono Hum

You might want to try isolating the step up cases from the chassis. There is a lot of potential for hum loops there. I will take a look in the hammond case my pair of those stepus are in how I did the earthing.
by Nick
Sun Jun 23, 2019 6:19 pm
Forum: Beginners
Topic: Phono Hum
Replies: 10
Views: 148

Re: Phono Hum

Being 50Hz instead of 100Hz makes me think its pick up instead of supply related. I would try removing the input transformer and just leave the 10k grid to ground and see if that makes any difference.
by Nick
Sun Jun 23, 2019 12:47 pm
Forum: Assorted Stuff
Topic: North West Audio Show - Cranage Hall
Replies: 17
Views: 278

Re: North West Audio Show - Cranage Hall

I doubt you would find many customers. Not that many musicians at this sort of show. Come along for the day and you will see.
by Nick
Sun Jun 23, 2019 10:46 am
Forum: Assorted Stuff
Topic: North West Audio Show - Cranage Hall
Replies: 17
Views: 278

Re: North West Audio Show - Cranage Hall

Looks like an interesting day out. Will see what I'm up to that weekend. Anyone got a ballpark price for a room, and know whether any furniture is provided? - Might be interesting to exhibit. Chris When you add accommodation for the two days the going rate in the UK for a small room is around the £...
by Nick
Sat Jun 22, 2019 11:44 pm
Forum: Assorted Stuff
Topic: North West Audio Show - Cranage Hall
Replies: 17
Views: 278

Re: North West Audio Show - Cranage Hall

I think Dave intends we should use the 833 amps he has. I think we may melt. Or just use the NCore amps Ali is bringing as a backup.
by Nick
Sat Jun 22, 2019 11:42 pm
Forum: Your Fave Artists
Topic: What Are You Listening To Right This Minute?
Replies: 3236
Views: 234439

Re: What Are You Listening To Right This Minute?

Just found another version

by Nick
Sat Jun 22, 2019 3:50 pm
Forum: Speakers
Topic: Chinese Loudspeaker Drive Units
Replies: 4
Views: 113

Re: Chinese Loudspeaker Drive Units

There were lots of full range drive units at Munich this year, many Chinese, many field coil. I went out of my way to listen to as many as I could. The depressing result was that I prefer the sound of AER drive units over everything else I heard (in the full range wizzer cone type type)
by Nick
Sat Jun 22, 2019 3:46 pm
Forum: Everyones Projects
Topic: Latest DSD Decoder Project
Replies: 34
Views: 2242

Re: Latest DSD Decoder Project

you'd need a quantum bit, neither 0 nor 1, or both...... Well, neither is it in a dithered stream. DSD's point is that you will never get a full-scale to 0 transition in that short a space of time, so the filtering is designed to cope with what is expected to happen.Its a thread about someone build...
by Nick
Sat Jun 22, 2019 10:50 am
Forum: Your Fave Artists
Topic: What Are You Listening To Right This Minute?
Replies: 3236
Views: 234439

Re: What Are You Listening To Right This Minute?

Dave the bass wrote:
Fri Jun 21, 2019 9:11 pm
Nick wrote:
Thu Jun 20, 2019 8:23 pm
Yep, its good isn’t it.
Is that the live recording album you played at Owster's that had a version of 'Use Me' on it?
Yes.
by Nick
Sat Jun 22, 2019 10:29 am
Forum: Everyones Projects
Topic: Latest DSD Decoder Project
Replies: 34
Views: 2242

Re: Latest DSD Decoder Project

Which I guess is one of the reasons higher sample rates or bit rates sound better? Well, its much more complex with DSD than PCM. All PCM has to do is go from one level to a zero in the space of two samples. DSD has to emit 0's to ramp the output down over a number of samples. Of course the DSD sam...
by Nick
Fri Jun 21, 2019 11:54 pm
Forum: Everyones Projects
Topic: Latest DSD Decoder Project
Replies: 34
Views: 2242

Re: Latest DSD Decoder Project

Continuous stream of 1 and 0 would do it. Looking at the noise floor of DSD, it may be you get the odd 1 1 0 0 and so on. Depends on the filter used to create it. I have never found an actual definition of the encoder. yes, I thought that as well...for a long time...then lying in bed one night I po...
by Nick
Fri Jun 21, 2019 4:36 pm
Forum: Everyones Projects
Topic: Latest DSD Decoder Project
Replies: 34
Views: 2242

Re: Latest DSD Decoder Project

Continuous stream of 1 and 0 would do it. Looking at the noise floor of DSD, it may be you get the odd 1 1 0 0 and so on. Depends on the filter used to create it. I have never found an actual definition of the encoder.
by Nick
Fri Jun 21, 2019 8:45 am
Forum: Stacks
Topic: DHT Heater Group Buy notes.
Replies: 35
Views: 6120

Re: DHT Heater Group Buy notes.

I use these all the time

https://uk.farnell.com/stmicroelectroni ... t=STPS1045

Slightly higher Vf, but don't know if 60mv matters.