Home |
Search |
Today's Posts |
#1
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
I bought a ****load of miscellaneous stuff from a defunct Hammond
dealer yesterday, and down under a pile of schematics and old Leslie speed switch housings was a pile of tubes. In this pile was a pair of brand-new-looking Western Electric 300Bs. No boxes, unfortunately, but they don't have a scratch on 'em, and the getters and everything else I can eyeball from the outside look perfect. The date codes are 913 and 252. Since I'm not into the audiophile gear/market, and since I have damn near zero experience with the 300B, I have a couple of questions for you hi-fi tube-rollers: 1) Anyone know the settings to test these on a Hickok 752? I also have an Eico 666 which has the right socket on it, but no test dope on that one's rollchart, either. 2) How do I interpret those date codes? Assistance appreciated, and anyone who might be interested in these is welcome to make an offer - but I'd like to make sure they're not junkers (doubtful, considering the physical condition) before I go taking anyone's money. ;-) Lord Valve (not so) Expert (this time around) |
#2
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752? (addendum)
|
#3
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
Lord Valve wrote: How to test a 300B? They may be tested as a 2A3, but with 5V on the filament. This is somewhat underloading the 300B, but if it lifts the meter within/near the 'acceptable' range for the 2A3, it should be fine in general use. I am sure someone here deeply into this Avatar of a tube has better information, but on the two occasions that I had to test such a tube on my 539B, the modified 2A3 test gave accurate information as it related to actual use in the field. Peter Wieck Wyncote, PA |
#4
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
Hi RATs!
Build the Ultimate Guitar amplifier! God sent those WE bulbs to you for a reason, not a quick buck A nice old strat will tell you everything you need to know about any tubes Besides, if they don't sound good, you can still sell them on Ebay. We buy everything ... Happy Ears! Al |
#5
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
The date codes are 913 and 252.
Those are the first quarter of 1949 and the last quarter of 1952. Alan |
#6
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
Alan Douglas wrote: The date codes are 913 and 252. Those are the first quarter of 1949 and the last quarter of 1952. Alan Hey, thanks. LV |
#7
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
Alan wrote:
The date codes are 913 and 252. Those are the first quarter of 1949 and the last quarter of 1952. Obviously. cheers, Ian |
#8
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
"Bret Ludwig" wrote in message oups.com... François Yves Le Gal wrote: On Fri, 05 Jan 2007 18:46:08 GMT, Lord Valve wrote: 1) Anyone know the settings to test these on a Hickok 752? There are none, and a 752 is ill-fitted for testing 300B or most directly heated tubes because of it's architecture : the grid signal is derived from 50/60 Hz AC mains and gets surimposed with the 50/60 Hz heater voltage. Other testers used a HF - from 5 KHz upwards - signal for grid. Hickok had special KS and RD testers built following Western Electric specifications and exclusively supplied to WE and their partners. And guess what : grid signal was HF... I also have an Eico 666 which has the right socket on it, but no test dope on that one's rollchart, either. Ditto. If you are going to test a lot of these building a purpose built tester/testbed amp would be the only way to get good data, though as he says the WE variants of Hickoks were much better. I would verify they have good filaments and no shorts, which can be done with a 5V bench supply and an ohmmeter. So, what's the ohmeter for? Checking the ohms of the 5V supply? ;-) He he... Fred |
#9
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
Bret Ludwig wrote: François Yves Le Gal wrote: On Fri, 05 Jan 2007 18:46:08 GMT, Lord Valve wrote: 1) Anyone know the settings to test these on a Hickok 752? There are none, and a 752 is ill-fitted for testing 300B or most directly heated tubes because of it's architecture : the grid signal is derived from 50/60 Hz AC mains and gets surimposed with the 50/60 Hz heater voltage. Other testers used a HF - from 5 KHz upwards - signal for grid. Hickok had special KS and RD testers built following Western Electric specifications and exclusively supplied to WE and their partners. And guess what : grid signal was HF... I also have an Eico 666 which has the right socket on it, but no test dope on that one's rollchart, either. Ditto. If you are going to test a lot of these building a purpose built tester/testbed amp would be the only way to get good data, though as he says the WE variants of Hickoks were much better. I would verify they have good filaments and no shorts, which can be done with a 5V bench supply and an ohmmeter. Yeah, that's the first thing I did, after I finished LMBFAO about the $100 I paid for a pile of "junk" that will wind up selling for around $5K by the time I get done ebaying all of it. ;-) I've already gotten a few e-mails from people who lurk this NG (never seen any of 'em post, as far as I know - maybe they just run Googles on "Western Electric 300B every so often), and if the prices the damn things have been going for on ebay are any indication, I'm gonna smile some more before it's all over. I have a purpose-built rig that I match octal power tubes on, and one for EL84s - I had to; "tube testers" are damn near useless for checking stuff that's going to get the livin' crap smacked out of it in guitar amps. I do so many octals, I have to replace the sockets in my test rig every couple of months. ;-) Lord Valve SCORE! |
#10
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
Lord Valve wrote: Since I'm not into the audiophile gear/market, and since I have damn near zero experience with the 300B, I have a couple of questions for you hi-fi tube-rollers: 1) Anyone know the settings to test these on a Hickok 752? I also have an Eico 666 which has the right socket on it, but no test dope on that one's rollchart, either. Hi I use my Eico 666 to check 300B's as thus: 1) Use the 2A3 settings but with 5v filament. 2) Set grid to -10 3) 122 to 130 tests like new, based on 2 New Svetlana, 4 new Sovtek, and 2 new standard Chinese 300B's. 2A3 settings: grid 17 (set at 10) plate 82 235111 111111 4 1 leak: 2 and 3 merit 2 Regards Bob H. |
#11
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
Bob H. wrote: I use my Eico 666 to check 300B's as thus: 1) Use the 2A3 settings but with 5v filament. 2) Set grid to -10 3) 122 to 130 tests like new, based on 2 New Svetlana, 4 new Sovtek, and 2 new standard Chinese 300B's. Yep.... Works on the 666 and any given Hickok. It ain't nohow perfect, but it does give more information than a VOM. But LV, being the jackass that he appears to be will not acknowledge you. He is far more interested in his profit margin than much of anything else. Not that profit is a bad thing by any means. But when a question is asked and answered, a simple "got it" is most useful. Peter Wieck Wyncote, PA |
#12
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
Thanks, dude.
LV Bob H. wrote: Lord Valve wrote: Since I'm not into the audiophile gear/market, and since I have damn near zero experience with the 300B, I have a couple of questions for you hi-fi tube-rollers: 1) Anyone know the settings to test these on a Hickok 752? I also have an Eico 666 which has the right socket on it, but no test dope on that one's rollchart, either. Hi I use my Eico 666 to check 300B's as thus: 1) Use the 2A3 settings but with 5v filament. 2) Set grid to -10 3) 122 to 130 tests like new, based on 2 New Svetlana, 4 new Sovtek, and 2 new standard Chinese 300B's. 2A3 settings: grid 17 (set at 10) plate 82 235111 111111 4 1 leak: 2 and 3 merit 2 Regards Bob H. |
#13
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
Peter Wieck wrote: Bob H. wrote: I use my Eico 666 to check 300B's as thus: 1) Use the 2A3 settings but with 5v filament. 2) Set grid to -10 3) 122 to 130 tests like new, based on 2 New Svetlana, 4 new Sovtek, and 2 new standard Chinese 300B's. Yep.... Works on the 666 and any given Hickok. It ain't nohow perfect, but it does give more information than a VOM. But LV, being the jackass that he appears to be will not acknowledge you. He is far more interested in his profit margin than much of anything else. Not that profit is a bad thing by any means. But when a question is asked and answered, a simple "got it" is most useful. Peter Wieck Wyncote, PA I've been known to thank people who aren't total ****ing schmucks. That wouldn't include you, son. As far as my profit margin goes, damn right - I don't do this **** as a hobby. I've supported my family with it for over a quarter of a century - so far. I'M IN IT FOR THE MONEY! GASP! Ain't that awful? Lord Valve Evil, Avaricious Mother-****er VISIT MY WEBSITE: http://www.nebsnow.com/LordValve I specialize in top quality HAND SELECTED NOS and current-production vacuum tubes for guitar and bass amps. Good prices, fast service. Authorized dealer for QSC amps, Sovtek/Electro-Harmonix, Behringer, Hammond-Suzuki, Leslie, Rolls, Weber VST, etc.! - Partial Client List - * Derek Trucks (Allman Brothers Band/Derek Trucks Band) * * Meatloaf * Catherine Wheel * Yo La Tengo * Let's Go Bowling * * Kofi Burbridge (DTB) * Tod Smallie (DTB) * Susan Tedeschi * * Roy Pritts (former head, Audio Engineering Society) * * Rob Hyckys (guitarist for Commander Cody) * Waky Amps * * Jamie McLean (guitarist for the Dirty Dozen Brass Band) * * John Pierce (bassist for Huey Lewis and the News) * * Rob Eaton (guitarist for Dark Star Orchestra) * * Detroit Frank DuMont (guitarist, Frank DuMont and the Drivin' Wheels) * * Coco Montoya * Clint Black * Bill McKay * Mojo Watson * Dick Dale * * Fleetwood Mac * Tyrin Benoit * Eugene Fodor * Dale Bruning * * Komet Amplification * Dr. Z * Maven Peal * Blockhead Amps * * Jim Kelley * Balls Amplification * Roccaforte Amplifiers * * Gerhart Amplification * Aiken Amplification * Germino Amplification * * Lots More * NBS Electronics, 230 South Broadway, Denver, CO 80209-1510 Phone orders/tech support after 1:30 PM Denver time at 303-778-1156 - Our 25th Year - VISA - MASTERCARD - PAYPAL - DISCOVER "It ain't braggin', if ya can do it." - Dizzy Dean |
#14
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
Bret Ludwig wrote: Lord Valve wrote: Peter Wieck wrote: Bob H. wrote: I use my Eico 666 to check 300B's as thus: 1) Use the 2A3 settings but with 5v filament. 2) Set grid to -10 3) 122 to 130 tests like new, based on 2 New Svetlana, 4 new Sovtek, and 2 new standard Chinese 300B's. Yep.... Works on the 666 and any given Hickok. It ain't nohow perfect, but it does give more information than a VOM. But LV, being the jackass that he appears to be will not acknowledge you. He is far more interested in his profit margin than much of anything else. Not that profit is a bad thing by any means. But when a question is asked and answered, a simple "got it" is most useful. Peter Wieck Wyncote, PA I've been known to thank people who aren't total ****ing schmucks. That wouldn't include you, son. As far as my profit margin goes, damn right - I don't do this **** as a hobby. I've supported my family with it for over a quarter of a century - so far. I'M IN IT FOR THE MONEY! GASP! Ain't that awful? Lord Valve Evil, Avaricious Mother-****er I do everything I can to discourage non-DIYers from going near vacuum tubes. I don't give a rat's (or a RAT's, come to think of it) ass who buys 'em, as long as they buy 'em. ;-) And i work even harder at making guitar players feel like their peckers are too small if they can't maintain their own equipment. Nothing personal. No offense taken. I'm an organist. The only thing I find guitars useful for is whacking drunken assholes in a bar fight. Les Pauls are especially good for this, although nothing touches the Hagstrom "Swede" when it comes to sheer bashing power. Nothing personal. Lord Valve Expert VISIT MY WEBSITE: http://www.nebsnow.com/LordValve I specialize in top quality HAND SELECTED NOS and current-production vacuum tubes for guitar and bass amps. Good prices, fast service. Authorized dealer for QSC amps, Sovtek/Electro-Harmonix, Behringer, Hammond-Suzuki, Leslie, Rolls, Weber VST, etc.! - Partial Client List - * Derek Trucks (Allman Brothers Band/Derek Trucks Band) * * Meatloaf * Catherine Wheel * Yo La Tengo * Let's Go Bowling * * Kofi Burbridge (DTB) * Tod Smallie (DTB) * Susan Tedeschi * * Roy Pritts (former head, Audio Engineering Society) * * Rob Hyckys (guitarist for Commander Cody) * Waky Amps * * Jamie McLean (guitarist for the Dirty Dozen Brass Band) * * John Pierce (bassist for Huey Lewis and the News) * * Rob Eaton (guitarist for Dark Star Orchestra) * * Detroit Frank DuMont (guitarist, Frank DuMont and the Drivin' Wheels) * * Coco Montoya * Clint Black * Bill McKay * Mojo Watson * Dick Dale * * Fleetwood Mac * Tyrin Benoit * Eugene Fodor * Dale Bruning * * Komet Amplification * Dr. Z * Maven Peal * Blockhead Amps * * Jim Kelley * Balls Amplification * Roccaforte Amplifiers * * Gerhart Amplification * Aiken Amplification * Germino Amplification * * Lots More * NBS Electronics, 230 South Broadway, Denver, CO 80209-1510 Phone orders/tech support after 1:30 PM Denver time at 303-778-1156 - Our 25th Year - VISA - MASTERCARD - PAYPAL - DISCOVER "It ain't braggin', if ya can do it." - Dizzy Dean |
#15
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
Bret Ludwig wrote: Lord Valve wrote: Bret Ludwig wrote: And i work even harder at making guitar players feel like their peckers are too small if they can't maintain their own equipment. Nothing personal. No offense taken. I'm an organist. The only thing I find guitars useful for is whacking drunken assholes in a bar fight. Les Pauls are especially good for this, although nothing touches the Hagstrom "Swede" when it comes to sheer bashing power. Basses usually do even better. My mother, all her sisters, and my sister-the oldest one-are all church organists. They make pretty good money doing it. None of the men in my family play organ. I have a little keyboard technique but not enough to properly be a pianist or an organist. I was taught early on an organist is someone who can use the pedals as well as the manuals-most pop and jazz "organists" are keyboard players. At least that's what they say. Obviously, you have no hands-on experience with this. Don't try to hang that classical-vs.-jazz snob **** on me, dude. I have chops both ways, and the technique in each case is formidable and not at all easily learned. Many jazz organists can play pedals. Some of 'em would scare the crap outta E. Power Biggs. "Finger bass" is also a highly developed jazz technique, and anyone who's spent any time at all listening to Groove Holmes, Joey DeFrancesco, Pat Bianchi, Jimmy Smith et al knows what a powerful tool this is. Tone wheel Hammonds are a lot of fun to tinker with but I feel sorry for anyone who has to haul the heavy fragile *******s around. Not necessary these days. The Hammond-Suzuki XK-3 and the "new" B-3 (available in a portable version) are rapidly replacing the oilers. They sound *killer*. I like the Leslie better than I do the Hammond itself-it's really good for guitars too. Don Leslie was a real character. Did you know the first Hammonds were built out of junk or surplus pianos? That's why they have piano manuals. No, they don't. Piano keys have lips on them. These lips will tear the crap out of your hands if you attempt many of the jazz techniques which the rounded, non-lipped, right-angle drop-front traditional Hammond keys allow. ORGANS have overhanging keys so one may play both manuals on occasion. Nothing about the "waterfall" keyboards precludes playing both manuals at once. Hammond, in fact, has built both types over the years. Waterfall manuals are the standard for jazz - hands down. Palm glissandos, smears, falls, etc. are close to impossible on non-waterfall manuals. Rapid transition from one manual to the other is actually facilitated by the waterfall arrangement; few classical pieces require this - many jazz pieces do. Spend some time eyeballing Jimmy Smith, if you can find some video; his technique allowed him to sound like three people were playing, as he ran finger bass with his left hand, played "grunts" (and the occasional line) with his feet, and stabbed chords in the middle of the lower manual with his right hand in between playing melody/riffs on the upper manual. http://www.allenorgan.com/www/products/c-3a/c-3a.asp Certainly a nice instrument for classical or theater players. Classical organists have been in love with Allens for years. I've never cared for them, but that's a matter of personal taste, not because I find them "flawed" in any way. I'm more of a jazz freak, and the Hammond rules that roost. Lord Valve Organist |
#16
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
"Bret Ludwig" said:
None of the men in my family play organ. Now you're bending the truth, Bratwig. I'm pretty sure you're playing with your organ every time someone mentions the word McIntosh. -- - Maggies are an addiction for life. - |
#17
Posted to rec.audio.tubes
|
|||
|
|||
Test 300B on Hickok 752?
Bret Ludwig wrote: Lord Valve wrote: Bret Ludwig wrote: Lord Valve wrote: Bret Ludwig wrote: And i work even harder at making guitar players feel like their peckers are too small if they can't maintain their own equipment. Nothing personal. No offense taken. I'm an organist. The only thing I find guitars useful for is whacking drunken assholes in a bar fight. Les Pauls are especially good for this, although nothing touches the Hagstrom "Swede" when it comes to sheer bashing power. Basses usually do even better. My mother, all her sisters, and my sister-the oldest one-are all church organists. They make pretty good money doing it. None of the men in my family play organ. I have a little keyboard technique but not enough to properly be a pianist or an organist. I was taught early on an organist is someone who can use the pedals as well as the manuals-most pop and jazz "organists" are keyboard players. At least that's what they say. Obviously, you have no hands-on experience with this. Don't try to hang that classical-vs.-jazz snob **** on me, dude. I have chops both ways, and the technique in each case is formidable and not at all easily learned. Many jazz organists can play pedals. Some of 'em would scare the crap outta E. Power Biggs. "Finger bass" is also a highly developed jazz technique, and anyone who's spent any time at all listening to Groove Holmes, Joey DeFrancesco, Pat Bianchi, Jimmy Smith et al knows what a powerful tool this is. I never said they didn't. I've heard people do "Giant Steps" and "Donna Lee" on the pedals. Tone wheel Hammonds are a lot of fun to tinker with but I feel sorry for anyone who has to haul the heavy fragile *******s around. Not necessary these days. The Hammond-Suzuki XK-3 and the "new" B-3 (available in a portable version) are rapidly replacing the oilers. They sound *killer*. I like the Leslie better than I do the Hammond itself-it's really good for guitars too. Don Leslie was a real character. Did you know the first Hammonds were built out of junk or surplus pianos? That's why they have piano manuals. No, they don't. Piano keys have lips on them. These lips will tear the crap out of your hands if you attempt many of the jazz techniques which the rounded, non-lipped, right-angle drop-front traditional Hammond keys allow. I stand corrected. ORGANS have overhanging keys so one may play both manuals on occasion. Nothing about the "waterfall" keyboards precludes playing both manuals at once. Hammond, in fact, has built both types over the years. Waterfall manuals are the standard for jazz - hands down. Palm glissandos, smears, falls, etc. are close to impossible on non-waterfall manuals. Rapid transition from one manual to the other is actually facilitated by the waterfall arrangement; few classical pieces require this - many jazz pieces do. Spend some time eyeballing Jimmy Smith, if you can find some video; his technique allowed him to sound like three people were playing, as he ran finger bass with his left hand, played "grunts" (and the occasional line) with his feet, and stabbed chords in the middle of the lower manual with his right hand in between playing melody/riffs on the upper manual. I remember the Hammond exhibit at the Chicago Museum of Science and Industry very well. I also own a M-3, but it gets little run time. http://www.allenorgan.com/www/products/c-3a/c-3a.asp Certainly a nice instrument for classical or theater players. Classical organists have been in love with Allens for years. I've never cared for them, but that's a matter of personal taste, not because I find them "flawed" in any way. I'm more of a jazz freak, and the Hammond rules that roost. THe old Wurlitzer theater organs with their elaborate band boxes , to me , were the really impressive thing. Hammonds always remind me, in the end, of TV and especially radio preachers. And remember the spooky intermission riff one of the TV networks used? It was a French deal called an Ondes Martenot. THAT I'd like to have. I thought it was called an "Ondioline." Same thing as used for the instrumental solo on Del Shannon's "Runaway," or am I thinking of something different? Indeed, the Hammond was all over radio and TV - one of the things I especially hated was soap operas. Damn near put me off the (electronic) organ altogther, until I heard a cut of Groove Holmes' "Misty" on WUST in Washington, DC. That was all I needed. ;-) LV |
Reply |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Note to Trevor | Audio Opinions | |||
Validity of audio tests | High End Audio | |||
James Randi gets clarified on audio biz | High End Audio | |||
A comparative versus evaluative, double-blind vs. sighted control test | High End Audio | |||
Richman's ethical lapses | Audio Opinions |