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Post by ckankel on May 14, 2006 20:47:29 GMT -5
Jerry,
Could you explain the difference between the High Gain and Low Gain JSX mods? Also, how would changing the power tubes to JJ 6L6s change the tone from the stock EL34s? I would like to get rid of the fizzy, buzzy top end and change the tone from the nasally high mids to a warmer lower mid tone. Kind of a smooth, creamy tone without a really percussive top end. I run my JSX through a Marshall 1960AV 4X12 with Vintage 30s. Thanks
Chip
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Post by Jerry P on May 15, 2006 8:49:21 GMT -5
Jerry, Could you explain the difference between the High Gain and Low Gain JSX mods? Also, how would changing the power tubes to JJ 6L6s change the tone from the stock EL34s? I would like to get rid of the fizzy, buzzy top end and change the tone from the nasally high mids to a warmer lower mid tone. Kind of a smooth, creamy tone without a really percussive top end. I run my JSX through a Marshall 1960AV 4X12 with Vintage 30s. Thanks Chip The high gain mod keeps the gain of the amp about the same, and the low gain lowers the gain to something along the lines of a modded Marshall type tone. The low gian is a looser, more open sounding distortion instead of the tight, focused, buzz saw type distortion that's there now. To my ears the EL34 is a smooth creamier sounding tube. It breaks up earlier so it has a crunchier, more distorted tone. I find the 6L6 to be a cleaner sounding tube with a bigger, tighter bottom end tone and sharper highs. The way they sound will have a lot to do with how you dial the amp in. V30 speakers are harsh and strong in the mids. The G12T-75 is a cleaner, tighter speaker. The greenback is a crunchy speaker that adds breakup to the tone. One thing I find withthe XXX/JSX amps is that if you run the master volume up around 7-8 and then use the channel volumes to control your overall volume the amp fattens up nicely. Running the channel gain up over 5 usually make for a real buzzy tone. Jerry
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