The GUTZ

[gyraf]

Originally Posted by Peter Simonsen

This is a picture of my "new" all tube mic preamp prototype 001.

Tried your preamp in our studio this week - you're definitely on the right track there! Very transparent, yet at the same time lending a beautiful smooth tone to whatever it's used with. I sure hope you'll get production up and running sometime soon - there is bound to be a lot of clients for a unit like this..

Jakob E.

[Peter Simonsen]

Originally Posted by gyraf

Tried your preamp in our studio this week - you're definitely on the right track there! Very transparent, yet at the same time lending a beautiful smooth tone to whatever it's used with. I sure hope you'll get production up and running sometime soon - there is bound to be a lot of clients for a unit like this..

Jakob E.

Wow..Thank you very, very much for the kind words Jakob. I..erh wont go deeper into talking about my own stuff around here for the obvious reasons :-)

I deeply appreciate that you like what we have done ;-)

Kind regards

Peter

P.S..I have recived a couple of mails kindly asking me why? "I wont talk about my designs around here"! Please understand It´s not that I wont talk and/or answer any questions about The preamps etc ..I just felt.. it would be more appropriate to do so in an other topic. :-)

[Tim Farrant]

Originally Posted by Wavebourn

Nice modular design, but are that rails made of plastic or aluminium? If plastic, they may break from vibration.

They are not the only thing holding the board in place, some parts missing from that picture, and I'm pretty confident once it's all assembled, it's fairly robust.

[TAVD]

Have we seen one of these yet?

[Wavebourn]

Originally Posted by A27Hull

Out of curiousity, is that a magic eye tube on your avatar?

Yep, it is EM-80 that I prefer to use in my gear. Looks like a "cat's eye".


http://wavebourn.com/images/audio/wavebourntubepp.gif

[doodlebug1]

I still remember when a guy brought me one of these to work on back in the 70s. What impressed me was the level of workmanship that still just sings to me today. All those caps on one side, the resistors on the other. The extra shot 'Down the Slot' is really nice, too.

This one came in last year and belongs to one of the product managers over at Universal Audio.

Cheers,

David

[pan60]

sweet!
i love McIntosh amps!!!

[A27Hull]

Originally Posted by Wavebourn

Yep, it is EM-80 that I prefer to use in my gear. Looks like a "cat's eye".http://wavebourn.com/images/audio/wavebourntubepp.gif

Very Nice! thumbsup Are you in business or is that a personal item?

I'd love to find a kit like that...I put together a Mapletree Audio Design Cat's Eye/Magic Eye Stereo Monitor that uses 6E5C's. Since then I've been very interested in Magic Eye's and Nixies and such.

[Wavebourn]

Originally Posted by A27Hull

Very Nice! thumbsup Are you in business or is that a personal item?

It is a prototype of a tube stereo power amp. Very linear and nice sounding, designed to use any clones of 6L6 tubes since they work in a relaxed mode with lowered regulated screen voltage, 2 pairs for 50W output, i.e. 50W per channel. Though, with my line arrays it was enough for a festival in a campground with up to 1000 listeners. I would be glad to make a business on them, but they are not ready for manufacturing: too many details and handwork is required to assemble one.

I'd love to find a kit like that...I put together a Mapletree Audio Design Cat's Eye/Magic Eye Stereo Monitor that uses 6E5C's. Since then I've been very interested in Magic Eye's and Nixies and such.

I can help you with a "kit", if you drop me a private message.

[Peter Simonsen]

Originally Posted by doodlebug1

I still remember when a guy brought me one of these to work on back in the 70s. What impressed me was the level of workmanship that still just sings to me today. All those caps on one side, the resistors on the other. The extra shot 'Down the Slot' is really nice, too.

This one came in last year and belongs to one of the product managers over at Universal Audio.

Cheers,

David

Uhh yes..looks very nice..I´ve been thinkin`about going back to PP-wirering..It´s not that.. for what I.. do it would be "better" for the sound! Its just that..to me..its soo beutifull to look at!..PCB´s are great, fast etc...but hmm somehow for tubeamps..it just somehow does not look right to me..He-he..

Might let the power supply´s stay on pcb and handwire the gain and driver stages ..*S**

Kind regards

<Peter

[Wavebourn]

Originally Posted by Peter Simonsen

Uhh yes..looks very nice..I´ve been thinkin`about going back to PP-wirering..It´s not that.. for what I.. do it would be "better" for the sound! Its just that..to me..its soo beutifull to look at!..PCB´s are great, fast etc...but hmm somehow for tubeamps..it just somehow does not look right to me..He-he..

Might let the power supply´s stay on pcb and handwire the gain and driver stages ..*S**

Kind regards

<Peter

It is what I prefer: to mount tube sockets on a chassis. More mechanically stable, plus heat/cool cycles damage soldering of tube sockets to PCB. For microphone input tubes a pad made of a peace of a computer mouse pad is a good idea, to damp sound waves from chassis to a tube. I also glue big nuts to nuvistors to silence them on audio frequencies.

[poncival]

Borrowed Vipre

[Peter Simonsen]

Originally Posted by Wavebourn

It is what I prefer: to mount tube sockets on a chassis. More mechanically stable, plus heat/cool cycles damage soldering of tube sockets to PCB. For microphone input tubes a pad made of a peace of a computer mouse pad is a good idea, to damp sound waves from chassis to a tube. I also glue big nuts to nuvistors to silence them on audio frequencies.

Yeah..thats right ;-). I have been PP-wireing for years and have learned a lot by doing so. Layout, mechanical stability etc. It takes somewhat longer to do, but there are still somethings one cant do with pcb´s. especially when talking guitar amps.

Kind regards

Peter

[Peter Simonsen]

Originally Posted by poncival

Borrowed Vipre

wow..there´s a lot of electronics in that thing!. I really, really would like to hear one of those one day! I´m very, very suppriced to see so much in the Vipre! I think..to me it´s it just got to be the one tube preamp with the most electronics I´ve ever seen! wow *S*

Kind regards

Peter

[juledude]

Originally Posted by Peter Simonsen

Yeah..thats right ;-). I have been PP-wireing for years and have learned a lot by doing so. Layout, mechanical stability etc. It takes somewhat longer to do, but there are still somethings one cant do with pcb´s. especially when talking guitar amps.

Kind regards

Peter

And I thought I was the only one. :-)

As someone who has hand wired thousands of point to point chassis, I fully understand why large volume manufacturers stay away from it. It can not be done by a machine. It takes time. It requires a commitment to a highly skilled worker.

I have found those employer commitments to be fading fast - at least in my country.

For me, the technical payoff of hand wiring is well worth the effort. I am sincerely grateful to work with engineers and musicians who always ask for, "more" rather than less. Therein lies the payoff.

At the same time, I totally understand why it is not appropriate for most gear. I have had great difficulty in attempts to point to point a SMD. ;-)

It may be presumptuous of me, since I have not powered up any of your gear, Peter, but I feel I understand your commitment to a quality experience for your customers.

Jule

[doodlebug1]

For what its worth, I worked with the Universal Audio folks earlier this year. I can report to you that there is a small but absolutely talented team that works everyday still doing the Pt2Pt wiring on each UA LA2. They're still built just like the originals right down to the tube sockets that are used. Next time you see a new one for sale, drop the front panel and have a look.

So, Pt2Pt wiring still is done but all that labor does have a price these days.

Cheers,

David

[musicmind11]

hey will someone post the inside pics for an adesigns mp2a? I cant get the lid of mine to come off and I dont want to force it =) what I could see though was gorgeus. plz plz plz

[TAVD]

http://www.denyleguitars.com/images/cx1s.jpg

[Peter Simonsen]

Originally Posted by juledude

And I thought I was the only one. :-)

As someone who has hand wired thousands of point to point chassis, I fully understand why large volume manufacturers stay away from it. It can not be done by a machine. It takes time. It requires a commitment to a highly skilled worker.

I have found those employer commitments to be fading fast - at least in my country.

For me, the technical payoff of hand wiring is well worth the effort. I am sincerely grateful to work with engineers and musicians who always ask for, "more" rather than less. Therein lies the payoff.

At the same time, I totally understand why it is not appropriate for most gear. I have had great difficulty in attempts to point to point a SMD. ;-)

It may be presumptuous of me, since I have not powered up any of your gear, Peter, but I feel I understand your commitment to a quality experience for your customers.

Jule

Hi Jule,

Sorry for the slow reply time on my part. :-)..Yes I agree..Its a tough call sometimes...*S*..On the other hand I did P2P and SMD circuit once..**..Just for the fun of it ;-). Not on any production unit ! that should be said..and no..I would not recommend it .

Kind regards

Peter

[jeff deff]

DBX 160 or 161?
The face plate says 161 and the back plate says 160. Which is it???

[gyraf]

Originally Posted by doodlebug1

They're still built just like the originals right down to the tube sockets that are used.

Are you sure about that? - I found a Zener diode hidden in a piece of shrinkwrap in a new-production unit - apparantly doing the job of the neon lamp - which was in there alright, and lightened, but doing nothing..

Jakob E.

[zmix]

Dolby SR breadboarded prototype. Full size image here

[Fishmed]

Originally Posted by jeff deff

DBX 160 or 161?
The face plate says 161 and the back plate says 160. Which is it???

I would say since there are no RCA connectors on the back that it is a 160 unit.

Or split the difference and call it a 160.5

[Peter Simonsen]

Originally Posted by zmix

Dolby SR breadboarded prototype. Full size image here

Jesus Christ! where did you get that from? Is it the original?

wonderfull picture !

Kind regards

Peter

[pan60]

Originally Posted by zmix

Dolby SR breadboarded prototype. Full size image here

wow
very cool to see!

[Wavebourn]

Originally Posted by Peter Simonsen

Hi Jule,

Sorry for the slow reply time on my part. :-)..Yes I agree..Its a tough call sometimes...*S*..On the other hand I did P2P and SMD circuit once..**..Just for the fun of it ;-). Not on any production unit ! that should be said..and no..I would not recommend it .

I use small PCBs with SMD soldered to point-to-point amplifiers. However, I don't run any production yet, but I don't see why I can't use such approach for production. That PCBs are for proper anode load, buffering, and servo in tube preamps.
Also, I prefer to construct power supplies on PCBs: electrolytics, diode bridges, ICs, power transistors, trimmers: all is made for PCB mounting.

[Peter Simonsen]

Originally Posted by Wavebourn

but I don't see why I can't use such approach for production. .

then you should by any means do so! ;-)..

Kind regards

Peter

[Wavebourn]

Originally Posted by Peter Simonsen

then you should by any means do so! ;-)..

Thanks! thumbsup

But I'm not a fan of Recyclonomics, so you will not be able to see any advertisements until I say, "Now I can't optimize it anymore".

[zmix]

I found the SR prototype photo on Wikipedia of all places!!

Here is the link!

[zmix]

Here is a scan of one of the compressor cards from my beloved 1968 Dolby A301