kanshouhin
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La Figaro 339
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Contrails
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How do you guys use the dual mono volume knobs? Am I suppose to adjust them till the singer is in the dead centre? I always adjust the left first then the right.
Also, the right power tube (facing towards the amp) is glowing a tiny bit brighter. Any cause for alarm?
Also, the right power tube (facing towards the amp) is glowing a tiny bit brighter. Any cause for alarm?
kramer5150
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Quote:
337 power cap upgrades should be mod-able, at least theres room in there for it... its the output coupling caps that are going to be difficult, at least thats what I found.
In regards to the knobs I just turn them until I have a balanced image thats the right vol level. I don't follow any specific pattern.... right to left or left to right.
Wish i could, like xmdcq said the 337 is different structure than 339, but i think some of the mods can be apply too. We can talk about it on London Meet, u coming right?
337 power cap upgrades should be mod-able, at least theres room in there for it... its the output coupling caps that are going to be difficult, at least thats what I found.
In regards to the knobs I just turn them until I have a balanced image thats the right vol level. I don't follow any specific pattern.... right to left or left to right.
Quote:
I concentrate on the back vocals in songs that normally come from the sides..and when both sides are equal in volume..then its right..and i prefer todo this with eyes closed..that way u can concentrate better..its a 5 second job..easy..both hands on both dials and dial away..
I concentrate on the back vocals in songs that normally come from the sides..and when both sides are equal in volume..then its right..and i prefer todo this with eyes closed..that way u can concentrate better..its a 5 second job..easy..both hands on both dials and dial away..
kramer5150
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That used to bug me (tube OCD)... but no it doesn't matter. my right TS5998 glows a little brighter too.
That used to bug me (tube OCD)... but no it doesn't matter. my right TS5998 glows a little brighter too.
telecaster
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Drivers it's true, but I find driver affect more the treble and mids, while power tubes affect more the low end. Although I confess that I find all tubes good sounding, just different purpose for different music gender!
Oh and with so many tubes Under the Hood, it's like an endless matching game where you can make so much combination, it's like a game, and when a combination stood out, you are pleasantly surprised!
Drivers it's true, but I find driver affect more the treble and mids, while power tubes affect more the low end. Although I confess that I find all tubes good sounding, just different purpose for different music gender!
Oh and with so many tubes Under the Hood, it's like an endless matching game where you can make so much combination, it's like a game, and when a combination stood out, you are pleasantly surprised!
telecaster
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Quote:
From the stereophile review of the 30000€ Orpheus :
"Two separate level controls would've been a nice touch, but there's only one" (speaking of the tube amp in the Orpheus set)
Luckily the 339 has two!
From the stereophile review of the 30000€ Orpheus :
"Two separate level controls would've been a nice touch, but there's only one" (speaking of the tube amp in the Orpheus set)
Luckily the 339 has two!
WALL-E
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The dynamic resistance of a diode or LED is very low (4-10 ohms), so stage gain is maximised for all frequencies the same, batteries have very low internal impedance less then 1 ohm or so, there is no negative feedback in cathode circuit, leading higher gain too. In my case, using a LED or battery instead of a resistor has significant effect on all aspect of sound.
constant pure DC cathode bias.....under test
The dynamic resistance of a diode or LED is very low (4-10 ohms), so stage gain is maximised for all frequencies the same, batteries have very low internal impedance less then 1 ohm or so, there is no negative feedback in cathode circuit, leading higher gain too. In my case, using a LED or battery instead of a resistor has significant effect on all aspect of sound.
constant pure DC cathode bias.....under test
kanshouhin
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Yes, collection and combination of tubes make me addictive.
But, I think the new user of 339 don't need to cost a lot money for expensive power tubes (GEC 6AS7G, Bendix 6080WB, Tungsol 5998), because,the ordinary tubes is good enough (Raytheon 6080, RCA 6080, Slyvania 6080).
snip3r77
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I try to search in eBay if they sell the 6sj7 to ef80 converter
It's the 6SJ7 to EF80 adapter, Yuking sells them too.
Golotripa
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I have to disagree with you on this. I feel LF339 sounds terrible with stock tubes - my Yulong D100's amp section is better. Upgrading to TS5998 and RCA5693 tubes make a world of difference, have amazing detail and hence the reason why I'm in love with this amp and selling my V200
I have to disagree with you on this. I feel LF339 sounds terrible with stock tubes - my Yulong D100's amp section is better. Upgrading to TS5998 and RCA5693 tubes make a world of difference, have amazing detail and hence the reason why I'm in love with this amp and selling my V200
Chodi
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What you say is undoubtedly true, but the cost of those tubes when you can find them is more than half the cost of the amp. Anyone thinking about getting this amp needs to be realistic about the cost of the tubes. You can take this bargain $600 amp and easily spend another $400 on tubes.
I have to disagree with you on this. I feel LF339 sounds terrible with stock tubes - my Yulong D100's amp section is better. Upgrading to TS5998 and RCA5693 tubes make a world of difference, have amazing detail and hence the reason why I'm in love with this amp and selling my V200
What you say is undoubtedly true, but the cost of those tubes when you can find them is more than half the cost of the amp. Anyone thinking about getting this amp needs to be realistic about the cost of the tubes. You can take this bargain $600 amp and easily spend another $400 on tubes.
Quote:
I agree with u golotripa..but u forget one even better pair..instead of the rca5693 reds u use the TS sj7gt mesh plated tubes..
I have to disagree with you on this. I feel LF339 sounds terrible with stock tubes - my Yulong D100's amp section is better. Upgrading to TS5998 and RCA5693 tubes make a world of difference, have amazing detail and hence the reason why I'm in love with this amp and selling my V200
I agree with u golotripa..but u forget one even better pair..instead of the rca5693 reds u use the TS sj7gt mesh plated tubes..
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