KeithL
Administrator
Posts: 9,937
|
Post by KeithL on Feb 28, 2019 12:40:48 GMT -5
Have fun guys......
|
|
novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,223
|
Post by novisnick on Feb 28, 2019 13:02:31 GMT -5
Emotiva Tubes at a VTA Bob Latino price point would be very inviting. Rather difficult to achieve perhaps! Add a little bling and they would be a good seller over the long term. Maybe limited run productions.
|
|
DYohn
Emo VIPs
Posts: 18,347
|
Post by DYohn on Feb 28, 2019 13:13:38 GMT -5
Hey I know, Emotiva should team up with Bob Carver for tube amps. Oh, wait...
|
|
novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,223
|
Post by novisnick on Feb 28, 2019 13:34:14 GMT -5
Hey I know, Emotiva should team up with Bob Carver for tube amps. Oh, wait...
|
|
|
Post by 405x5 on Feb 28, 2019 14:14:06 GMT -5
I wonder how many of the “Kids” here know that automobiles from the early 60’s going back as far as a few from the 1920’s, were running around with TUBE radios! A perfect example of the need because back then, there was no other way to do it.
Bill
|
|
KeithL
Administrator
Posts: 9,937
|
Post by KeithL on Feb 28, 2019 14:15:04 GMT -5
OK.... just to set the record straight.... I really wouldn't be expecting any Emotiva tube products any time soon.... It's too expensive to build, there's limited demand, and plenty of folks already making it...
(Of course, you never know... things could change.)
But feel free to talk about it to your heart's content.... And, for anybody who wonders... or cares... Yours truly knows quite a bit about tube equipment... And that includes both designing, building, and fixing it... I just prefer the sound of good low distortion solid state gear for listening to... Ahh.... well.....
|
|
KeithL
Administrator
Posts: 9,937
|
Post by KeithL on Feb 28, 2019 14:17:27 GMT -5
Errr..... yeah..... It seemed like a good idea at the time... But it just didn't work out...
Hey I know, Emotiva should team up with Bob Carver for tube amps. Oh, wait...
|
|
|
Post by 405x5 on Feb 28, 2019 14:39:44 GMT -5
Here’s one! Of course like any other tube radio, It didn’t come on right away and when it did, it wasn’t very good. Bill
|
|
novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,223
|
Post by novisnick on Feb 28, 2019 14:42:42 GMT -5
Errr..... yeah..... It seemed like a good idea at the time... But it just didn't work out...
Yep, stuff happens!
|
|
novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,223
|
Post by novisnick on Feb 28, 2019 14:52:47 GMT -5
I wonder how many of the “Kids” here know that automobiles from the early 60’s going back as far as a few from the 1920’s, were running around with TUBE radios! A perfect example of the need because back then, there was no other way to do it. Bill They also incorporated tubed tires as well! 😋
|
|
|
Post by donh50 on Feb 28, 2019 14:53:36 GMT -5
When I went through school we had to analyze tube circuits as well as transistor circuits (including those new-fangled MOSFET thingies).
Damn I feel old...
|
|
|
Post by geeqner on Feb 28, 2019 15:04:58 GMT -5
|
|
DYohn
Emo VIPs
Posts: 18,347
|
Post by DYohn on Feb 28, 2019 15:10:00 GMT -5
My dad also repaired electronics for a while when I was a kid. We had a large tube tester in his shop, and a bin full of literally hundreds of tubes for 1950's vintage televisions... He's probably why I love electronics...
|
|
KeithL
Administrator
Posts: 9,937
|
Post by KeithL on Feb 28, 2019 15:31:19 GMT -5
You bring up a VERY important point for folks hoping to start playing with tubes... And especially for anyone who plans to build, rebuild, or repair a tube amplifier...
High-powered solid state amplifiers often have voltages inside that can give you a nasty shock and even be dangerous.... TUBE AMPLIFIERS run at voltages that can absolutely positively kill you.... And, in a damaged or taken apart amplifier, those voltages may show up in places that aren't that difficult to touch by accident...
Not to mention the fact that, while small tubes usually don't get all that hot, some output tubes normally run hot enough that you can strike a match off the glass....
So, IF YOU WANT TO PLAY AROUND INSIDE TUBE AMPS, BE VERY CAREFUL, AND BE SURE YOU KNOW WHERE THE DANGEROUS VOLTAGES AND HOT SURFACES ARE LOCATED. (And, to be quite blunt, if you aren't sure where the dangerous parts are, then you really shouldn't be messing around in there.)
|
|
|
Post by 405x5 on Feb 28, 2019 15:51:18 GMT -5
My dad also repaired electronics for a while when I was a kid. We had a large tube tester in his shop, and a bin full of literally hundreds of tubes for 1950's vintage televisions... He's probably why I love electronics... Oh I’m sure! When we were kids it was a candy 🍭 store if you were fascinated at all by electronics. I miss “Nunzio”. Nunzio, was that TV repair guy that came to your house with a big travel box of tubes and tools and a mirror. Of course with that mirror, he tweaked the tv 📺 from the back while watching the mirror image. Until I got my first solid state gear, I brought my tubes to a place that had one of those testers that customers could use. Bill
|
|
|
Post by 405x5 on Feb 28, 2019 16:04:45 GMT -5
You bring up a VERY important point for folks hoping to start playing with tubes... And especially for anyone who plans to build, rebuild, or repair a tube amplifier...
High-powered solid state amplifiers often have voltages inside that can give you a nasty shock and even be dangerous.... TUBE AMPLIFIERS run at voltages that can absolutely positively kill you.... And, in a damaged or taken apart amplifier, those voltages may show up in places that aren't that difficult to touch by accident...
Not to mention the fact that, while small tubes usually don't get all that hot, some output tubes normally run hot enough that you can strike a match off the glass....
So, IF YOU WANT TO PLAY AROUND INSIDE TUBE AMPS, BE VERY CAREFUL, AND BE SURE YOU KNOW WHERE THE DANGEROUS VOLTAGES AND HOT SURFACES ARE LOCATED. (And, to be quite blunt, if you aren't sure where the dangerous parts are, then you really shouldn't be messing around in there.
]Painful lesson learned one day with my old Phase 400 amp. I put my hand back there and I don’t remember why. Mann....did I get zapped. 40 years ago and I remember the pain like it was yesterday
|
|
KeithL
Administrator
Posts: 9,937
|
Post by KeithL on Feb 28, 2019 16:10:21 GMT -5
I'm going to add one further warning for anyone who purchases or plans to purchase vintage tube equipment. Most vintage tube amplifiers have unregulated power supplies - which means that the voltage on the power supply varies depending on how heavily it's loaded. And, especially in integrated amplifiers, there is often a single main power supply, with various tubes connected to it via additional filter stages. And, in this situation, having safe and proper voltages present at each step of the way RELIES on all of the tubes being inserted and operating.
(The operating voltages on the power supply are calculated with the assumption that all of the tubes are inserted and running more or less as intended.)
Therefore, with some amplifiers, if you were to attempt to run the amplifier with certain tubes unplugged, you can actually cause permanent damage to the power supply. (The voltage at certain points can drift high enough to overload and blow out power supply capacitors - and some power supply caps for tube amps tend to be expensive and difficult to source.)
This makes it a bad idea to power up a vintage tube amp that is not working properly unless you know exactly what you're doing.
(Some kits may instruct you to plug in and power up certain tubes before installing the rest. And, if so, you should obviously follow those instructions carefully. However, unless specifically instructed to do so, this can be a very bad idea.)
You bring up a VERY important point for folks hoping to start playing with tubes... And especially for anyone who plans to build, rebuild, or repair a tube amplifier... High-powered solid state amplifiers often have voltages inside that can give you a nasty shock and even be dangerous.... TUBE AMPLIFIERS run at voltages that can absolutely positively kill you.... And, in a damaged or taken apart amplifier, those voltages may show up in places that aren't that difficult to touch by accident...
Not to mention the fact that, while small tubes usually don't get all that hot, some output tubes normally run hot enough that you can strike a match off the glass.... So, IF YOU WANT TO PLAY AROUND INSIDE TUBE AMPS, BE VERY CAREFUL, AND BE SURE YOU KNOW WHERE THE DANGEROUS VOLTAGES AND HOT SURFACES ARE LOCATED. (And, to be quite blunt, if you aren't sure where the dangerous parts are, then you really shouldn't be messing around in there.)
|
|
|
Post by mgbpuff on Feb 28, 2019 17:38:51 GMT -5
I have a bunch of tube amps, all in working condition. My pride is a Marantz 8b, a 2 channel amp which has 4 EL34 in a push pull configuration (about 35 watts per ch.). Next I have Audio Electronics Six Pak Mono Blocks. Each has 6 EL34s in a parallel push pull configuration giving 60 watts output. Then I have a real SET mono block set - George Wright Mono 7, a single 300b with DC heaters that puts out 7 watts. Next, I have a stereo Melody I2A3 stereo amp rated at 18 watts per channel. Then I have a little Glow Audio One Amp that I use for headphones. It has EL84 output tubes rated 6 watts. Lastly I have a tube multi channel (6) Dared DV-6C (really a hybrid design) that has 3 12XA7 tubes in the front end. I have only fired up the Dared one time, it just set on the shelf. I have a tube preamp also, a Cary Audio SLP-03. Oh yeh, my Peachtree audio Nova integrated (80watts per channel) has a selectable tube buffer as part of its preamp circuitry. Some of these aren't used often. The Wright Mono 7s power a high efficiency single Fostex driver quarter length Voight Pipe design, Cain & Cain Abbeys. The Melody drives a pair of Zu Audio Essence speakers.
|
|
bootman
Emo VIPs
Typing useless posts on internet forums....
Posts: 9,358
|
Post by bootman on Feb 28, 2019 17:39:29 GMT -5
Lets discuss affordable Chinese designs to kick off the discussions. Here is the first one: Yaqin MC-10T This has been around for a while and while using my Google Fu skills appears to get positive reviews around the net. Discuss.
|
|
|
Post by mgbpuff on Feb 28, 2019 17:42:44 GMT -5
Looks like a Marantz 8b knockoff, but of course it is an integrated amp.
|
|