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#207101 by JCP61
Sun Mar 03, 2013 11:40 am
anyone into vintage traynors?

a friend gave me 2 of them

one is a YB1A and the other a YBIA MK II


Image

Image

#207103 by JCP61
Sun Mar 03, 2013 11:52 am
guess by right this belongs in gear,

moved it over there, sorry.

#207111 by GuitarMikeB
Sun Mar 03, 2013 2:41 pm
My first amp was a Traynor!

#207119 by jimmydanger
Sun Mar 03, 2013 3:20 pm
My friend had a Traynor, loud m-fer. He used to play a black Jaguar through it.

#207122 by JCP61
Sun Mar 03, 2013 3:37 pm
I have heard the same thing, that they were loud that is.

the mkII is basically the same amp as the yb1a but the B+ is kicked up to 525v making 2 el34's into 90 watts
so that ought to be interesting when I get some new caps and tubes into it.
looks like it hasn't been on since at least 75'

think i'll put a PPIV master volume in the 50 watt
that might tame it and get some decent sounds to boot.

#207124 by Peg Lautny
Sun Mar 03, 2013 3:51 pm
jimmydanger wrote:My friend had a Traynor, loud m-fer. He used to play a black Jaguar through it.


I'll second that. I used to play with someone who mostly played telecaster through one. VERY LOUD amp and when he'd get on that bridge pickup it could rip your head off!

#207125 by Slacker G
Sun Mar 03, 2013 4:08 pm
JCP61 wrote:I have heard the same thing, that they were loud that is.

the mkII is basically the same amp as the yb1a but the B+ is kicked up to 525v making 2 el34's into 90 watts
so that ought to be interesting when I get some new caps and tubes into it.
looks like it hasn't been on since at least 75'

think i'll put a PPIV master volume in the 50 watt
that might tame it and get some decent sounds to boot.


From Wik:

In common with all 'E' prefix tubes, using the Mullard-Philips tube designation, the EL34 has a heater voltage of 6.3V. According to the data sheets found in old vacuum tube reference manuals, a pair of EL34s with 800V plate voltage can produce 90 watts output in Class AB1 in push-pull configuration. However, this configuration is rarely found. One application of this type was in "Australian Sound" public address amplifiers commonly used in government schools in Australia in the 1950s, using four EL34s for ~200 watts. More commonly found is a pair of EL34s running Class AB1 in push-pull around 375-450V plate voltage and producing 50 watts output (if fixed bias is used), while a quad of EL34s running Class AB1 in push-pull typically run anywhere from 425-500V plate voltage and produces 100 watts output. This configuration is typically found in guitar amplifiers, especially Marshalls and is quite hard on the valves.

From me:

The other problem with that is the increased plate curent it would take to get a good 100watts. Another the output transformer is not wound sufficiently or in a manner to support the changes. Not all transformers are created equal. Why don't big amplifiers have small transformers? The big ones have them. Is it to save on size and copper? Nope. It is because the transfer of of energy from the plate to the speaker requires the creation of a magnetic field and the collapse of that magnetic field to induce sufficient current and voltage to drive the speaker. It is similar to assuming that you could start your car with a set of flashlight batteries wired up to produce 12 volts. Not likely to happen.

At best you could expect an increase of distortion and a rapidly decreased life of the tubes. For that reason 4 tubes and a heavier transformer are used to create a "100 watt" amplifier. And even at that, it is not a clean 100 watts. Just a few thoughts about that mod.

#207134 by JCP61
Sun Mar 03, 2013 5:09 pm
well as far as the output on the mkII I have only what the web sites are telling me at this point.
but;
Image



the tranny on this thing is as big as a Volkswagen.

#207139 by PaperDog
Sun Mar 03, 2013 7:35 pm
Peg Lautny wrote:"the tranny on this thing is as big as a Volkswagen."

Big? No......THIS is big:

http://www.youtube.com/watch?v=a9iF4KnV7F4


Reminds me of a place called Marylyn's in Pattya beach Thailand... They have these two girls that play ping pong on the stage... (But they were t using paddles to ping and pong the ball back & forth
You don't even wanna know what they do to eels there....

Bangkok is surreal.. Not for the faint hearted.

#207143 by ANGELSSHOTGUN
Sun Mar 03, 2013 8:25 pm
GuitarMikeB wrote:My first amp was a Traynor!


My first "amp" was an OLD WEBCOR reel to reel tape recorder. When you put it on pause and record it would put out test samples that played from a 2 inch speaker built into the side. If you turned up the input you actually got more sustain. Yes it was TUBE. Yes it was from the fifties. Yes it had a 1/4 inch input. Pretty cool.

I graduated 6 months later to a KUSTOM 100 watt head with a 4 /12 cab. Remember the padding on those things. Cost me nearly 60 bucks complete!

Oh heck, I'm just an old... :lol:

#207146 by Cajundaddy
Sun Mar 03, 2013 8:52 pm
I remember those. Built like Sherman tanks and put out a lot of sound. Canadian build quality and with a good JBL or Altec speaker they sounded great. I don't see them much anymore.

If it was mine I would simply cap it and restore the tone without modding. YMMV

#207147 by ANGELSSHOTGUN
Sun Mar 03, 2013 8:58 pm
Thejohnny7band wrote:I remember those. Built like Sherman tanks and put out a lot of sound. Canadian build quality and with a good JBL or Altec speaker they sounded great. I don't see them much anymore.

If it was mine I would simply cap it and restore the tone without modding. YMMV


You're an old mutha bleep... :lol: :lol: :lol:

#207157 by JCP61
Sun Mar 03, 2013 9:54 pm
GLENNY J wrote:
Thejohnny7band wrote:I remember those. Built like Sherman tanks and put out a lot of sound. Canadian build quality and with a good JBL or Altec speaker they sounded great. I don't see them much anymore.

If it was mine I would simply cap it and restore the tone without modding. YMMV


You're an old mutha bleep... :lol: :lol: :lol:



well the master volume seems like a modest mod,
it's not a valuable head, and it will work as a test bed.

#207159 by JCP61
Sun Mar 03, 2013 9:57 pm
Slacker G wrote:
JCP61 wrote:I have heard the same thing, that they were loud that is.

the mkII is basically the same amp as the yb1a but the B+ is kicked up to 525v making 2 el34's into 90 watts
so that ought to be interesting when I get some new caps and tubes into it.
looks like it hasn't been on since at least 75'

think i'll put a PPIV master volume in the 50 watt
that might tame it and get some decent sounds to boot.


From Wik:

In common with all 'E' prefix tubes, using the Mullard-Philips tube designation, the EL34 has a heater voltage of 6.3V. According to the data sheets found in old vacuum tube reference manuals, a pair of EL34s with 800V plate voltage can produce 90 watts output in Class AB1 in push-pull configuration. However, this configuration is rarely found. One application of this type was in "Australian Sound" public address amplifiers commonly used in government schools in Australia in the 1950s, using four EL34s for ~200 watts. More commonly found is a pair of EL34s running Class AB1 in push-pull around 375-450V plate voltage and producing 50 watts output (if fixed bias is used), while a quad of EL34s running Class AB1 in push-pull typically run anywhere from 425-500V plate voltage and produces 100 watts output. This configuration is typically found in guitar amplifiers, especially Marshalls and is quite hard on the valves.

From me:

The other problem with that is the increased plate curent it would take to get a good 100watts. Another the output transformer is not wound sufficiently or in a manner to support the changes. Not all transformers are created equal. Why don't big amplifiers have small transformers? The big ones have them. Is it to save on size and copper? Nope. It is because the transfer of of energy from the plate to the speaker requires the creation of a magnetic field and the collapse of that magnetic field to induce sufficient current and voltage to drive the speaker. It is similar to assuming that you could start your car with a set of flashlight batteries wired up to produce 12 volts. Not likely to happen.

At best you could expect an increase of distortion and a rapidly decreased life of the tubes. For that reason 4 tubes and a heavier transformer are used to create a "100 watt" amplifier. And even at that, it is not a clean 100 watts. Just a few thoughts about that mod.


i see from the forums
that the debate about traynors claims goes on,
I don't have an opinion at the moment, but i might when this restoration is over.

over all I think it's somehow boosted, but not a real 90 watts.

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