Search found 436 matches

by billshurv
Mon Jun 11, 2018 8:15 pm
Forum: The Peabody Lounge
Topic: panel of speaker horn gurus
Replies: 6
Views: 8414

Re: panel of speaker horn gurus

I've come across a couple of people on the internet who use SH50s at home. Too big and too 'different' for most people to get their heads around for domestic use, but I think they are the missing piece of the puzzle in terms of the next steps forwards in reproduction. Last 10 years or so have been g...
by billshurv
Sun Jun 10, 2018 7:38 pm
Forum: The Peabody Lounge
Topic: panel of speaker horn gurus
Replies: 6
Views: 8414

Re: panel of speaker horn gurus

He did threaten it, but I don't think Tom has much time for the average audiophile :) Couple of links to Danley inspired DIY designs http://www.diyaudio.com/forums/multi-way/297620-xbush-mark-2-synergy-unity-horn-spherical-proportions.html http://www.diyaudio.com/forums/multi-way/312414-3d-printed-3...
by billshurv
Sun Jun 10, 2018 5:00 pm
Forum: The Peabody Lounge
Topic: panel of speaker horn gurus
Replies: 6
Views: 8414

Re: panel of speaker horn gurus

Thanks, will take a watch of that if when have some spare minutes. I have a lot of interest in the work that Tom Danley has done. A couple of people have made DIY Synergy horns and they work really well. If I were to build pair of speakers it would be of this type. But first I need a room big enough...
by billshurv
Wed Jun 06, 2018 5:02 am
Forum: Pro Audio Design
Topic: Tilt Equalizer
Replies: 35
Views: 66940

Re: Tilt Equalizer

http://www.linkwitzlab.com/about_me.htm Suggests he may not have long left :(
by billshurv
Sat May 19, 2018 4:54 pm
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 499
Views: 773219

Re: A Low Noise Balanced In Moving Coil Preamp Using the ZTX851

Argh factor of 1000 out, I knew I shouldn't have posted on Friday night :) I saw nF and read pF. Belt and braces is always good btw esp as this should be in use for quite a while in my system. I wouldn't say 'last MC stage' but penultimate for a while. (OT the ultimate for the time being is just a b...
by billshurv
Fri May 18, 2018 5:01 pm
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 499
Views: 773219

Re: A Low Noise Balanced In Moving Coil Preamp Using the ZTX851

Well handy to know that there is a very good reason most MCs are loaded between 100R and 1k even if people thought it was due to some flooby parameter they read about in a magazine. As it's only really there to damp the resonance I do wonder the angst some go through chosing a value and then a resis...
by billshurv
Tue May 15, 2018 10:21 am
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 499
Views: 773219

Re: A Low Noise Balanced In Moving Coil Preamp Using the ZTX851

You do have to admire their dedication to the cause to measure that many!
by billshurv
Tue May 15, 2018 8:28 am
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 499
Views: 773219

Re: A Low Noise Balanced In Moving Coil Preamp Using the ZTX851

It's certainly something to stock up on just in case for personal use. Luckily for my use a lifetime buy is a dozen. Oh and I realised the PNP is actually 14p more than the NPN. Horror.
by billshurv
Tue May 15, 2018 6:15 am
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 499
Views: 773219

Re: A Low Noise Balanced In Moving Coil Preamp Using the ZTX851

One other question I forgot to ask. Have you got any plans to try a configuration with the ZTX951. I realise it's t**d polishing to worry about any lower noise than you already have but the PNP is around 30% lower Rbb for no extra cost.
by billshurv
Mon May 14, 2018 7:18 pm
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 499
Views: 773219

Re: A Low Noise Balanced In Moving Coil Preamp Using the ZTX851

I don't see a small bias current as a worry, but I know some people get perturbed.