Mr.Anderson Posted April 18, 2017 Share Posted April 18, 2017 5 hours ago, aussievintage said: I know you guys have been posting some pretty gear. How about something different. This is a prototype phono preamp I built years ago. I have built better looking stuff since, but, like a lot of my prototypes, I am still using this in the back room. Ugliness does effect the sound luckily. U mean Ugliness "Does NOT" effect the sound It looks a good DIY level amp. Keep up the good work.. Cheers.. 1 Link to comment Share on other sites More sharing options...
aussievintage Posted April 18, 2017 Share Posted April 18, 2017 (edited) 1 hour ago, Mr.Anderson said: U mean Ugliness "Does NOT" effect the sound It looks a good DIY level amp. Keep up the good work.. Cheers.. Oh course I meant to say does NOT... Thanks for the comments. I must take a photo of a later one that is a bit prettier. Edited April 18, 2017 by aussievintage Link to comment Share on other sites More sharing options...
Shanghai Wally Posted April 18, 2017 Share Posted April 18, 2017 Aloha Anyone in the Aussie Tube Section know something or seen this tubes before? Very rare info in the www. Cheers Wally 1 Link to comment Share on other sites More sharing options...
mwhouston Posted April 18, 2017 Share Posted April 18, 2017 2 hours ago, Shanghai Wally said: Aloha Anyone in the Aussie Tube Section know something or seen this tubes before? Very rare info in the www. Cheers Wally Never seen the brand before. Have no idea if they are rare or valuable. Link to comment Share on other sites More sharing options...
Shanghai Wally Posted April 18, 2017 Share Posted April 18, 2017 (edited) Aloha Western National 6L6GC tubes kind of terra incognita Same here also don't have a idea about this cute babies how they Sound etc..but as soon as the defective MC-30 is back from Service I'll start a test run and check the Sound comes Wait and check later Cheers Edited April 18, 2017 by Shanghai Wally Text adjustment 1 Link to comment Share on other sites More sharing options...
mwhouston Posted April 18, 2017 Share Posted April 18, 2017 2 hours ago, Shanghai Wally said: Aloha Western National 6L6GC tubes kind of terra incognita Same here also don't have a idea about this cute babies how they Sound etc..but as soon as the defective MC-30 is back from Service I'll start a test run and check the Sound comes Wait and check later Cheers You have probably seen posts of my latest 6L6 SE UL amps. I'm stunned how good these tubes can sound. Big surprise. 1 Link to comment Share on other sites More sharing options...
Stump Posted April 20, 2017 Share Posted April 20, 2017 How many members are running 212 Tubes in there setup? Stump 2 Link to comment Share on other sites More sharing options...
mwhouston Posted April 20, 2017 Share Posted April 20, 2017 They are big! Link to comment Share on other sites More sharing options...
aussievintage Posted April 20, 2017 Share Posted April 20, 2017 Imagine the power bill Link to comment Share on other sites More sharing options...
mwhouston Posted April 20, 2017 Share Posted April 20, 2017 I'm in two power camps currently: 150W Class D and 2W tube. I never let running cost influence my gear selection. I use what I feel like on the day. Link to comment Share on other sites More sharing options...
mwhouston Posted April 28, 2017 Share Posted April 28, 2017 I know you have seen this image before but I thought you may be interested in some details of the metal 6L6s. They are JAN-CKR-6L6s. VT-115. Accepted in Feb. 1944 (so real old). Made by General Electric (GE). I have some NOS GE 12AU7s in my DIY tube preamp which I feel sounds so extremely good. They were tested at 80%. I must check the other two pairs to see if some don't test better but I like these because these are the ones I sanded back and sprayed with high temp engine paint. 1 Link to comment Share on other sites More sharing options...
aussievintage Posted April 28, 2017 Share Posted April 28, 2017 Great idea repainting them. Link to comment Share on other sites More sharing options...
mwhouston Posted April 28, 2017 Share Posted April 28, 2017 7 minutes ago, aussievintage said: Great idea repainting them. They were slightly corroded otherwise I may not have even bothered. Though they were painted six months ago for the first few days of playing the amp paint smells wafted through the house. Glad that's over. Link to comment Share on other sites More sharing options...
aussievintage Posted April 28, 2017 Share Posted April 28, 2017 11 minutes ago, mwhouston said: They were slightly corroded otherwise I may not have even bothered. Though they were painted six months ago for the first few days of playing the amp paint smells wafted through the house. Glad that's over. Most examples I have in the shed are also worn and corroded a bit from rattling around in the odd's and end's box. I tried 2 metal 6L6s in a mono amp I have, but they didn't look the part. Maybe if I repainted mine too, I'd be happier to use them. I also have a SET amp that can be configured for 6L6 types... 1 Link to comment Share on other sites More sharing options...
mwhouston Posted April 28, 2017 Share Posted April 28, 2017 1 minute ago, aussievintage said: Most examples I have in the shed are also worn and corroded a bit from rattling around in the odd's and end's box. I tried 2 metal 6L6s in a mono amp I have, but they didn't look the part. Maybe if I repainted mine too, I'd be happier to use them. I also have a SET amp that can be configured for 6L6 types... Don't get too hung up on black; canary yellow or a deep red could really look quite striking. The amp above sounds too much like the second one I built using the same schematic. I have changed the driver tube to a Miniwatt and cut away the bypass cap on the driver tube. But I'm thinking on a rewire using all carbon film resistors. A bit of fiddling about but it may be just enough to give it a different voice to the better built one with the JJ 6L6GCs. Link to comment Share on other sites More sharing options...
Guest BobbyD Posted April 28, 2017 Share Posted April 28, 2017 On 4 March 2017 at 4:32 PM, SETSergio said: BK, no horns, but vented 150 L cabinet's working (hopefully) from ~ 315 Hz down to the 30's to assist my current speakers which only get down to maybe ~ 60 Hz. All to be driven by my 300B amp. Imagine a Klipsch Cornwall without the compression tweeter and midrange and that's what I am chasing. So we are not off topic a pic of some tubes.. And the finished product..... Link to comment Share on other sites More sharing options...
TerryO Posted April 28, 2017 Share Posted April 28, 2017 58 minutes ago, SETSergio said: And the finished product..... Very Impressive. 1 Link to comment Share on other sites More sharing options...
Guest BobbyD Posted April 28, 2017 Share Posted April 28, 2017 2 minutes ago, TerryO said: Very Impressive. Thank you Link to comment Share on other sites More sharing options...
realysm42 Posted May 6, 2017 Share Posted May 6, 2017 (edited) Valve DAC (Longdog audio VDT1). Uses an ef86 to regulate power supply and an pair of 5687 tubes for output: Here are the first NOS output tubes I've ever bought, Tung Sol 5687s. They were made in the late 50s, so a good few years older than myself! Note the oxidization on the pins. I used a fibre glass 'pen' to clean them back to bare metal, nice and shiny now. Then I applied Deoxit Gold to them before putting into the DAC. Lovely sounding things. Edited May 6, 2017 by realysm42 1 Link to comment Share on other sites More sharing options...
mwhouston Posted May 6, 2017 Share Posted May 6, 2017 (edited) I have made some comments in earlier posts that my DIY 6L6 power amps - Silver Supreme - sounds really excellent. Also it is a fast an SS amp. And that's not my comment but others who have heard it. Also others who have heard the amp at my place agree it is an almost SS sounding amp. Part of what I'm putting that down to is the SS PS. Just about every other tube amp I have built has tube rectification. This is one of the few amps I have used SS rectification. Also there is 850uf of filtering in two stages. No choke. This is also very unusual for me. I choke everything including my DIY phono preamp amp. I'd like to hear from those who have tube amps with either tube or SS rectification and there comments on weather they think there is a sonic advantage with SS rectification. I know it could be hard to compare but a subjective comment is all that is required. I may never go back to tube rectifiers just based on the results of my last two DIY tube amps with SS hearts! Edited May 6, 2017 by mwhouston Link to comment Share on other sites More sharing options...
Guest BobbyD Posted May 6, 2017 Share Posted May 6, 2017 1 hour ago, mwhouston said: I have made some comments in earlier posts that my DIY 6L6 power amps - Silver Supreme - sounds really excellent. Also it is a fast an SS amp. And that's not my comment but others who have heard it. Also others who have heard the amp at my place agree it is an almost SS sounding amp. Part of what I'm putting that down to is the SS PS. Just about every other tube amp I have built has tube rectification. This is one of the few amps I have used SS rectification. Also there is 850uf of filtering in two stages. No choke. This is also very unusual for me. I choke everything including my DIY phono preamp amp. I'd like to hear from those who have tube amps with either tube or SS rectification and there comments on weather they think there is a sonic advantage with SS rectification. I know it could be hard to compare but a subjective comment is all that is required. I may never go back to tube rectifiers just based on the results of my last two DIY tube amps with SS hearts! Hi Mark, there is tube rectification and then there is "tube rectification" 2 Power trannies, 6 rectifiers and 6 chokes .... 3 per channel dual mono. Cap's everywhere underneath. Each rectifier power supply feeds a tube on the output side. Link to comment Share on other sites More sharing options...
campo007 Posted May 6, 2017 Share Posted May 6, 2017 My Audio Note Kits EL34 mono blocks with Sophia Electric blue EL34's, Philips 5R4GYS and Siemens ECF80. 1 Link to comment Share on other sites More sharing options...
mwhouston Posted May 6, 2017 Share Posted May 6, 2017 @SETSergio golly. Do you have tube amp with SS rec? Link to comment Share on other sites More sharing options...
mwhouston Posted May 6, 2017 Share Posted May 6, 2017 @campo007 top stuff. Any amp with SS rec? Link to comment Share on other sites More sharing options...
campo007 Posted May 6, 2017 Share Posted May 6, 2017 Just now, mwhouston said: @campo007 top stuff. Any amp with SS rec? No, all tube. Link to comment Share on other sites More sharing options...
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