Preamp Tubes? - Who, What, When, Where, Why, and How? - Page 51

RiverRatt · 10-02-2009, 10:56 PM

It is a smooth plate diamond bottom. Now that I've got that coming, what's next? My checklist is getting shorter. Maybe a Mazda chrome plate?

jupiter89 · 10-02-2009, 11:27 PM

Hi solarburnDSL50 ! Coincidently enough, I also have a 2004 DSL50 and purchased a Vox Night Train this weekend. (I also have a 1989 JCM800 2204 (50w). The DSL50 was modded, original owner said output transformer was upgraded, and a few select resistor and cap changes. You mention "Martimus Maximus Tone Pack" - is that a package deal of all the pre-amp tubes that some firm sells? Big before and after difference in sound ? Hey thanks for the PI and microphonic answers !

MartyStrat54 · 10-02-2009, 11:37 PM

Quote:

Originally Posted by RiverRatt

It is a smooth plate diamond bottom. Now that I've got that coming, what's next? My checklist is getting shorter. Maybe a Mazda chrome plate?

You bought it yes? Great. Well I looked again at the listing and all it had in the title was <>. It didn't say whether it was a smooth or ribbed. Did you contact her before buying? She's a good, honest tube seller. I bought from her when she was first starting out on EBAY. (I'd like to know where some of these seller's find all of these tubes.)

Them French Mazda's don't seem to make any lists. They might have a following with the Hi Fi set, but I don't hear guitarist's raving about the Mazda they have in V1. If you are wanting to go in that price range, get a Bugle Boy Amperex. Do you have any Amperex right now?

MartyStrat54 · 10-02-2009, 11:40 PM

Quote:

Originally Posted by jupiter89

You mention "Martimus Maximus Tone Pack" - is that a package deal of all the pre-amp tubes that some firm sells? Big before and after difference in sound ? Hey thanks for the PI and microphonic answers !

Hey J89. SolarBurn gave me that name. I sell tubes and Joe, SolarBurn, is one of my good customers.

RiverRatt · 10-02-2009, 11:47 PM

Yeah, I bought it. I was really happy with the Mullard I got from her.

I was just reading about that Mazda tube and how it's one of the most expensive AX7's ever made. I don't think I'll be buying one anytime soon unless it's for an investment.

No, I don't have an Amperex yet. They were a little out of my price range this time. I need to sell some more crap on ebay. UPS brought the Celestion Vintage 10 for my little Crate class A amp today. I may get it sounding right and take it to the local music store and put it on consignment. Those guys don't know a tube from a chitlin, but they move some gear.

I'm not even sure how to spot a real Amperex. I had an Amperex bugle boy EZ81 that I pulled from a hi-fi, but it was really a Mullard.

solarburnDSL50 · 10-03-2009, 12:01 AM

Quote:

Originally Posted by jupiter89

Hi solarburnDSL50 ! Coincidently enough, I also have a 2004 DSL50 and purchased a Vox Night Train this weekend. (I also have a 1989 JCM800 2204 (50w). The DSL50 was modded, original owner said output transformer was upgraded, and a few select resistor and cap changes. You mention "Martimus Maximus Tone Pack" - is that a package deal of all the pre-amp tubes that some firm sells? Big before and after difference in sound ? Hey thanks for the PI and microphonic answers !

Well hey there jupiter. I like your taste in amps hehe. I get my NOS tubes from Marty(MartyStrat54) here on the forum. You could call him my NOS tube broker. Hence the moniker "Martimus Maximus" which in all reality he lives up too especially devising NOS tone packs. Ok enough of that. His head must be getting huge...

I have a bunch of NOS I've bought from him and he has been right on in that they really made a difference and now I have a hard time choosing which ones to use. I refer to them as tone packs cause we line up NOS preamp tubes/power tubes and then place them in certain order or I make my own mixes and share my findings. So a "tone pack" is a quick way of saying this set of preamp tubes/power tubes, which are usually a mixture(except power tubes) rock. You wouldn't call a bad mix a tone pack though...

I came up with a real nice tone pack for the NT including the power tubes if you are interested...

Any questions just ask man and the preamp thread is where we hang out alot.

MartyStrat54 · 10-03-2009, 12:18 AM

Well, it's like I said before. What happened in America with its tube companies happened to Britain/Europe and their tube companies. The solid state craze hit so fast that thousands of tubes were left sitting in warehouses. When tube plants started shutting down, everybody was buying off of everybody. A lot of tubes were "mislabeled" by the tube companies. TV tubes were the hardest hit. I've known where one tube had nine different part numbers put on it. Then you had GE and Sylvania trading tubes with each other. They hung in the longest, so they were always swapping tubes. If you remember their codes, you can tell who really made the tube. On top of all this, you add in the Japanese tubes.

The better tube amp companies used the better tubes, so you will find Fisher tubes made by Amperex and Telefunken. Packard Bell used Amperex and Mullards. There are a lot of overseas brands that I know nothing about. Most of them bought Amperex or Mullards and relabeled them.

Another thing I touched on briefly in a prior post. Philips was the big controlling figure with European tubes. I can think of at least 15 brands that were all made by Philips. Amperex is one of them. The main thing I want to tell you is that for the most part, European tubes are of higher quality than American tubes. They bough most of their raw materials from the USA, but they put them together better. It's hard for me to say it, but it's true and that is why the real tube freaks, Hi Fi fanatics use Tele's, Mullards and Amperex. If RCA gray plates were best, they would be using them instead.

When you are ready for an Amperex, give me a hoot.

jupiter89 · 10-03-2009, 12:31 AM

I remember in the late 60's early 70's when my dad would send me to the local Super X drug store to test and buy new tubes for either the Zenith TV or the tube equipped stereo we had. At the front of the store was the tube tester that indicated something like poor, fair, good on a meter after you plugged in the tube into its appropiate socket. In the drawers below in pristine RCA and Sylvania boxes were brand new tubes for just a few bucks. I wonder what happened to all those old gems when the solid state TV's, radios and stereo came around ?

MartyStrat54 · 10-03-2009, 12:33 AM

As we speak they are being sold on EBAY.

solarburnDSL50 · 10-03-2009, 12:41 AM

Quote:

Originally Posted by jupiter89

I remember in the late 60's early 70's when my dad would send me to the local Super X drug store to test and buy new tubes for either the Zenith TV or the tube equipped stereo we had. At the front of the store was the tube tester that indicated something like poor, fair, good on a meter after you plugged in the tube into its appropiate socket. In the drawers below in pristine RCA and Sylvania boxes were brand new tubes for just a few bucks. I wonder what happened to all those old gems when the solid state TV's, radios and stereo came around ?

Could you imagine having those stored away somewhere and then finding them now in some garage sale for next to nothing...

Ok. I'm done dreaming.

Jesstaa · 10-03-2009, 01:11 AM

Just found a vid on youtube, you've probably all seen it already, but for those who haven't I thought it was pretty cool.
Yeah, it's a power tube, but this thread gets more attention.

YouTube - Journey to the Center of a Tube

RiverRatt · 10-03-2009, 01:37 AM

Can you guys help me out with these tubes? I have two Sonotone-branded ECC83 tubes. I've always assumed they were RCA because they have a side getter, but they don't look like my RCA 12AU7A cleartops in their construction, and there is a little bit of flash in the top of the tubes. The plates look exactly like my 1966 Mullard, but they don't flash. They also don't have a box around the 12AX7A at the top of the tube like RCA tubes do. I know that a lot of Sonotone stuff is from Germany, but these are labled "Made in USA". Here's the best picture I could get. The bottom of the tube appears to have the number "14" embossed, with radial lines coming from the center. These pics are of the same tube. The one on the right is the side with the getter flash, but it didn't come through good in the pic. I don't think they look much like RCAs, but they may be.

I was doing an inventory of my main tone tubes. I have two RCA 12BZ7s, and i really don't need both. These are NOS and aren't microphonic. If anyone wants one of them, PM me.

Jesstaa · 10-03-2009, 02:44 AM

That has a huge plate o.0

And I want an RCA =P
But shipping would be a hell of alot >.>

Procter2812 · 10-03-2009, 05:37 AM

Theres the Brimar( relabeled Mullard) on the left and the Yellow plate Mullard on the right.

They are the same. The Brimar even has a Blackburn code.

Just because it had brimar on it was £7 and sounds awesome!

Alex

Jesstaa · 10-03-2009, 05:47 AM

What year is the brimar?

Procter2812 · 10-03-2009, 06:08 AM

Between 62 and 64 i guess... so im goin with 63.

Alex

Jesstaa · 10-03-2009, 06:16 AM

Well what does the date code say?

Procter2812 · 10-03-2009, 06:24 AM

I can only see B1A.

But i looked at the dating picture you put on the thread and it looks like one from 62-64.

It has BVA on and ECC83 in the Mullard Style writing and then the Brimar Logo

Jesstaa · 10-03-2009, 06:28 AM

That'd be 61 then.
B = blackburn, and I'm pretty sure the 1 is the last digit in the year, it'd be from the 60's, so 61.

48 years old xD

Procter2812 · 10-03-2009, 06:42 AM

Quote:

Originally Posted by Jesstaa

That'd be 61 then.
B = blackburn, and I'm pretty sure the 1 is the last digit in the year, it'd be from the 60's, so 61.

48 years old xD

Wowzaaaaaa

And still working strong!

solarburnDSL50 · 10-03-2009, 07:00 AM

Quote:

Originally Posted by Procter2812

Theres the Brimar( relabeled Mullard) on the left and the Yellow plate Mullard on the right.

They are the same. The Brimar even has a Blackburn code.

Just because it had brimar on it was £7 and sounds awesome!

Alex

Look! Twins...

Jesstaa · 10-03-2009, 07:24 AM

What are you doing awake so early, Joe?

Jae · 10-03-2009, 07:59 AM

Quote:

Originally Posted by RiverRatt

It is a smooth plate diamond bottom. Now that I've got that coming, what's next? My checklist is getting shorter. Maybe a Mazda chrome plate?

It looks to be right, a smooth plate diamond. I got four of these Fisher Tele's yesterday and they all have the smooth plates. not sure if all the Fishers by Tele have the smooth, but so far the ones I got have smooth.

I like to buy good tubes from GG, since she is good with communication and so far has sold me decent tubes.

joshuaaewallen · 10-03-2009, 08:29 AM

Quote:

Originally Posted by Jesstaa

Just found a vid on youtube, you've probably all seen it already, but for those who haven't I thought it was pretty cool.
Yeah, it's a power tube, but this thread gets more attention.

YouTube - Journey to the Center of a Tube

That's awesome. Very informative. Thanks for that post Jesstaa!

Jesstaa · 10-03-2009, 08:31 AM

Woah, Josh, hey man

No probs =P

joshuaaewallen · 10-03-2009, 08:50 AM

Quote:

Originally Posted by Jesstaa

Woah, Josh, hey man

No probs =P

Surprised I'm still breathing?

How are things down under mate?

Jesstaa · 10-03-2009, 09:12 AM

Eh, about to heat up -_-

And that guitar is tasty, if it were a dessert I'd eat it.
But it isn't a dessert, so I shall fap instead.

solarburnDSL50 · 10-03-2009, 01:29 PM

Quote:

Originally Posted by Jesstaa

What are you doing awake so early, Joe?

I stayed up late. On my days off from work.

solarburnDSL50 · 10-03-2009, 01:33 PM

Quote:

Originally Posted by joshuaaewallen

Surprised I'm still breathing?

How are things down under mate?

Why howdy rowdy! You still play'n that beauty...luckee!(Napoleon Dynamite voice)

Good to see ya stopped in!

PaoloJM · 10-03-2009, 02:11 PM

Lads,
I figured this would be the best place to post this.

This is a tone test of a bunch of the main types of 12Ax7 type preamp valves from my little stash.

The clips are all recorded using my Harley Benton GA5 as it only uses one preamp valve so the tone of each should come across clear than if there were multiple preamp valves.

The clips are recorded with my USA Strat on the neck pick up straight to the HA GA5 => V30 speaker and close miked with a SM57 => MBox and ProTools.
No post EQ or effects are used.

With the volume at 10 you're hearing some farty blocking distortion. This was the first amp I modifyed, and at the time I figured any series grid resistance was taking away from valuable gain, so there's no grid stop at all between the two halves. Haven't had time to get back in there to sort it out.

I recorded each clip in the same format, volume at 5 followed by volume at 10 with some chords and single notes in each, to allow for easy comparison.
The power valve is a JJ84.

I haven't adjusted the volume between clips either to show relative volumes with the lower gain valves.

For some reason my JAN 57571, the NOS Mullard Yellow Label, NOS Mazda, NOS Sylvania and the Brimar wouldn't run in the HB.

The idea is to have a fair comparison for people to hear the differences from an independant source all recording under the exact same conditions and equipment.

Lemme whatcha think.

SoundClick artist: Preamp Valve Test - page with MP3 music downloads

10-02-2009, 10:56 PM	#1501 (permalink)
RiverRatt Senior Member Join Date: May 2008 Location: Between Memphis and Nashville Posts: 517	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? It is a smooth plate diamond bottom. Now that I've got that coming, what's next? My checklist is getting shorter. Maybe a Mazda chrome plate?

10-02-2009, 11:27 PM	#1502 (permalink)
jupiter89 Member Join Date: Sep 2009 Location: Florida Posts: 38	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? Hi solarburnDSL50 ! Coincidently enough, I also have a 2004 DSL50 and purchased a Vox Night Train this weekend. (I also have a 1989 JCM800 2204 (50w). The DSL50 was modded, original owner said output transformer was upgraded, and a few select resistor and cap changes. You mention "Martimus Maximus Tone Pack" - is that a package deal of all the pre-amp tubes that some firm sells? Big before and after difference in sound ? Hey thanks for the PI and microphonic answers !

10-02-2009, 11:47 PM	#1505 (permalink)
RiverRatt Senior Member Join Date: May 2008 Location: Between Memphis and Nashville Posts: 517	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? Yeah, I bought it. I was really happy with the Mullard I got from her. I was just reading about that Mazda tube and how it's one of the most expensive AX7's ever made. I don't think I'll be buying one anytime soon unless it's for an investment. No, I don't have an Amperex yet. They were a little out of my price range this time. I need to sell some more crap on ebay. UPS brought the Celestion Vintage 10 for my little Crate class A amp today. I may get it sounding right and take it to the local music store and put it on consignment. Those guys don't know a tube from a chitlin, but they move some gear. I'm not even sure how to spot a real Amperex. I had an Amperex bugle boy EZ81 that I pulled from a hi-fi, but it was really a Mullard.

10-03-2009, 12:18 AM	#1507 (permalink)
MartyStrat54 Senior Member Join Date: Feb 2009 Location: Formerly Phoenix, now north of KC Posts: 2,583	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? Well, it's like I said before. What happened in America with its tube companies happened to Britain/Europe and their tube companies. The solid state craze hit so fast that thousands of tubes were left sitting in warehouses. When tube plants started shutting down, everybody was buying off of everybody. A lot of tubes were "mislabeled" by the tube companies. TV tubes were the hardest hit. I've known where one tube had nine different part numbers put on it. Then you had GE and Sylvania trading tubes with each other. They hung in the longest, so they were always swapping tubes. If you remember their codes, you can tell who really made the tube. On top of all this, you add in the Japanese tubes. The better tube amp companies used the better tubes, so you will find Fisher tubes made by Amperex and Telefunken. Packard Bell used Amperex and Mullards. There are a lot of overseas brands that I know nothing about. Most of them bought Amperex or Mullards and relabeled them. Another thing I touched on briefly in a prior post. Philips was the big controlling figure with European tubes. I can think of at least 15 brands that were all made by Philips. Amperex is one of them. The main thing I want to tell you is that for the most part, European tubes are of higher quality than American tubes. They bough most of their raw materials from the USA, but they put them together better. It's hard for me to say it, but it's true and that is why the real tube freaks, Hi Fi fanatics use Tele's, Mullards and Amperex. If RCA gray plates were best, they would be using them instead. When you are ready for an Amperex, give me a hoot. __________________ MARTY 2009 Gibson Explorer-Hell Raising Machine 1989 Fender Strat Plus USA 2008 Fender Tele USA 2004 Schecter Elite w/DiMarzio's TSL100 with custom 4x12 cab. TSL122 with Man 'O War Speakers. TSL602 #1 with JBL D123 Speakers and 602 #2 with Altec 417 Speakers. "Oh so sweet my friends." DSL401 #1 with Red Fang Speaker and 401 #2 with JBL D123 Speaker. Tubes: Let's just say they are NOS that kick ass.

10-03-2009, 12:31 AM	#1508 (permalink)
jupiter89 Member Join Date: Sep 2009 Location: Florida Posts: 38	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? I remember in the late 60's early 70's when my dad would send me to the local Super X drug store to test and buy new tubes for either the Zenith TV or the tube equipped stereo we had. At the front of the store was the tube tester that indicated something like poor, fair, good on a meter after you plugged in the tube into its appropiate socket. In the drawers below in pristine RCA and Sylvania boxes were brand new tubes for just a few bucks. I wonder what happened to all those old gems when the solid state TV's, radios and stereo came around ?

10-03-2009, 12:33 AM	#1509 (permalink)
MartyStrat54 Senior Member Join Date: Feb 2009 Location: Formerly Phoenix, now north of KC Posts: 2,583	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? As we speak they are being sold on EBAY. __________________ MARTY 2009 Gibson Explorer-Hell Raising Machine 1989 Fender Strat Plus USA 2008 Fender Tele USA 2004 Schecter Elite w/DiMarzio's TSL100 with custom 4x12 cab. TSL122 with Man 'O War Speakers. TSL602 #1 with JBL D123 Speakers and 602 #2 with Altec 417 Speakers. "Oh so sweet my friends." DSL401 #1 with Red Fang Speaker and 401 #2 with JBL D123 Speaker. Tubes: Let's just say they are NOS that kick ass.

10-03-2009, 01:37 AM	#1512 (permalink)
RiverRatt Senior Member Join Date: May 2008 Location: Between Memphis and Nashville Posts: 517	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? Can you guys help me out with these tubes? I have two Sonotone-branded ECC83 tubes. I've always assumed they were RCA because they have a side getter, but they don't look like my RCA 12AU7A cleartops in their construction, and there is a little bit of flash in the top of the tubes. The plates look exactly like my 1966 Mullard, but they don't flash. They also don't have a box around the 12AX7A at the top of the tube like RCA tubes do. I know that a lot of Sonotone stuff is from Germany, but these are labled "Made in USA". Here's the best picture I could get. The bottom of the tube appears to have the number "14" embossed, with radial lines coming from the center. These pics are of the same tube. The one on the right is the side with the getter flash, but it didn't come through good in the pic. I don't think they look much like RCAs, but they may be. I was doing an inventory of my main tone tubes. I have two RCA 12BZ7s, and i really don't need both. These are NOS and aren't microphonic. If anyone wants one of them, PM me.

10-03-2009, 02:44 AM	#1513 (permalink)
Jesstaa Senior Member Join Date: Apr 2009 Location: Gippsland, Vic, Australia. Posts: 797	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? That has a huge plate o.0 And I want an RCA =P But shipping would be a hell of alot >.> __________________ GEAR LIST Marshall JCM900 4100 (6L6) (1995) Marshall Valvestate 1965A cab (????) Cort VX-2V (2008) TUBES/SPEAKERS Power: Groove Tube 6L6GCB Phase Inverter: Sovtek 7025 Pre: V1 - N.O.S Mullard ECC83. V2 National 12AX7A Speakers: Celestion G10L-35 Marshall forever My tube amp & Real Music appreciation forum

10-03-2009, 05:37 AM	#1514 (permalink)
Procter2812 Senior Member Join Date: Mar 2009 Posts: 333	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? Theres the Brimar( relabeled Mullard) on the left and the Yellow plate Mullard on the right. They are the same. The Brimar even has a Blackburn code. Just because it had brimar on it was £7 and sounds awesome! Alex __________________ www.sexpistolstribute.co.uk JCM800 2203X JCM2000 TSL100 Marshall 1936 Gibson Les Paul Custom Orville Les Paul Custom Fender Highway One Stratocaster Boss EQ Ibanez Tube Screamer Crybaby Wah Boss TU-2

10-03-2009, 05:47 AM	#1515 (permalink)
Jesstaa Senior Member Join Date: Apr 2009 Location: Gippsland, Vic, Australia. Posts: 797	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? What year is the brimar? __________________ GEAR LIST Marshall JCM900 4100 (6L6) (1995) Marshall Valvestate 1965A cab (????) Cort VX-2V (2008) TUBES/SPEAKERS Power: Groove Tube 6L6GCB Phase Inverter: Sovtek 7025 Pre: V1 - N.O.S Mullard ECC83. V2 National 12AX7A Speakers: Celestion G10L-35 Marshall forever My tube amp & Real Music appreciation forum

10-03-2009, 06:08 AM	#1516 (permalink)
Procter2812 Senior Member Join Date: Mar 2009 Posts: 333	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? Between 62 and 64 i guess... so im goin with 63. Alex __________________ www.sexpistolstribute.co.uk JCM800 2203X JCM2000 TSL100 Marshall 1936 Gibson Les Paul Custom Orville Les Paul Custom Fender Highway One Stratocaster Boss EQ Ibanez Tube Screamer Crybaby Wah Boss TU-2

10-03-2009, 06:16 AM	#1517 (permalink)
Jesstaa Senior Member Join Date: Apr 2009 Location: Gippsland, Vic, Australia. Posts: 797	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? Well what does the date code say? __________________ GEAR LIST Marshall JCM900 4100 (6L6) (1995) Marshall Valvestate 1965A cab (????) Cort VX-2V (2008) TUBES/SPEAKERS Power: Groove Tube 6L6GCB Phase Inverter: Sovtek 7025 Pre: V1 - N.O.S Mullard ECC83. V2 National 12AX7A Speakers: Celestion G10L-35 Marshall forever My tube amp & Real Music appreciation forum

10-03-2009, 06:24 AM	#1518 (permalink)
Procter2812 Senior Member Join Date: Mar 2009 Posts: 333	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? I can only see B1A. But i looked at the dating picture you put on the thread and it looks like one from 62-64. It has BVA on and ECC83 in the Mullard Style writing and then the Brimar Logo __________________ www.sexpistolstribute.co.uk JCM800 2203X JCM2000 TSL100 Marshall 1936 Gibson Les Paul Custom Orville Les Paul Custom Fender Highway One Stratocaster Boss EQ Ibanez Tube Screamer Crybaby Wah Boss TU-2

10-03-2009, 06:28 AM	#1519 (permalink)
Jesstaa Senior Member Join Date: Apr 2009 Location: Gippsland, Vic, Australia. Posts: 797	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? That'd be 61 then. B = blackburn, and I'm pretty sure the 1 is the last digit in the year, it'd be from the 60's, so 61. 48 years old xD __________________ GEAR LIST Marshall JCM900 4100 (6L6) (1995) Marshall Valvestate 1965A cab (????) Cort VX-2V (2008) TUBES/SPEAKERS Power: Groove Tube 6L6GCB Phase Inverter: Sovtek 7025 Pre: V1 - N.O.S Mullard ECC83. V2 National 12AX7A Speakers: Celestion G10L-35 Marshall forever My tube amp & Real Music appreciation forum

10-03-2009, 07:24 AM	#1522 (permalink)
Jesstaa Senior Member Join Date: Apr 2009 Location: Gippsland, Vic, Australia. Posts: 797	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? What are you doing awake so early, Joe? __________________ GEAR LIST Marshall JCM900 4100 (6L6) (1995) Marshall Valvestate 1965A cab (????) Cort VX-2V (2008) TUBES/SPEAKERS Power: Groove Tube 6L6GCB Phase Inverter: Sovtek 7025 Pre: V1 - N.O.S Mullard ECC83. V2 National 12AX7A Speakers: Celestion G10L-35 Marshall forever My tube amp & Real Music appreciation forum

10-03-2009, 08:31 AM	#1525 (permalink)
Jesstaa Senior Member Join Date: Apr 2009 Location: Gippsland, Vic, Australia. Posts: 797	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? Woah, Josh, hey man No probs =P __________________ GEAR LIST Marshall JCM900 4100 (6L6) (1995) Marshall Valvestate 1965A cab (????) Cort VX-2V (2008) TUBES/SPEAKERS Power: Groove Tube 6L6GCB Phase Inverter: Sovtek 7025 Pre: V1 - N.O.S Mullard ECC83. V2 National 12AX7A Speakers: Celestion G10L-35 Marshall forever My tube amp & Real Music appreciation forum

10-03-2009, 09:12 AM	#1527 (permalink)
Jesstaa Senior Member Join Date: Apr 2009 Location: Gippsland, Vic, Australia. Posts: 797	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? Eh, about to heat up -_- And that guitar is tasty, if it were a dessert I'd eat it. But it isn't a dessert, so I shall fap instead. __________________ GEAR LIST Marshall JCM900 4100 (6L6) (1995) Marshall Valvestate 1965A cab (????) Cort VX-2V (2008) TUBES/SPEAKERS Power: Groove Tube 6L6GCB Phase Inverter: Sovtek 7025 Pre: V1 - N.O.S Mullard ECC83. V2 National 12AX7A Speakers: Celestion G10L-35 Marshall forever My tube amp & Real Music appreciation forum

10-03-2009, 02:11 PM	#1530 (permalink)
PaoloJM Senior Member Join Date: Jun 2008 Location: Cork, Ireland Posts: 534	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? Lads, I figured this would be the best place to post this. This is a tone test of a bunch of the main types of 12Ax7 type preamp valves from my little stash. The clips are all recorded using my Harley Benton GA5 as it only uses one preamp valve so the tone of each should come across clear than if there were multiple preamp valves. The clips are recorded with my USA Strat on the neck pick up straight to the HA GA5 => V30 speaker and close miked with a SM57 => MBox and ProTools. No post EQ or effects are used. With the volume at 10 you're hearing some farty blocking distortion. This was the first amp I modifyed, and at the time I figured any series grid resistance was taking away from valuable gain, so there's no grid stop at all between the two halves. Haven't had time to get back in there to sort it out. I recorded each clip in the same format, volume at 5 followed by volume at 10 with some chords and single notes in each, to allow for easy comparison. The power valve is a JJ84. I haven't adjusted the volume between clips either to show relative volumes with the lower gain valves. For some reason my JAN 57571, the NOS Mullard Yellow Label, NOS Mazda, NOS Sylvania and the Brimar wouldn't run in the HB. The idea is to have a fair comparison for people to hear the differences from an independant source all recording under the exact same conditions and equipment. Lemme whatcha think. SoundClick artist: Preamp Valve Test - page with MP3 music downloads __________________ www.youtube.com/paolojm

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