Members t2mikeman Posted September 12, 2009 Members Share Posted September 12, 2009 Short story: EH 6l6/sovtek wxt+, biased to 64% dissipation. Its awesome! Best clean tone i have ever heard in my life now! So much BOUNCE, juicy bass, but tons of definition (not that this amp only seems to sound this good with sovtek 6l6gcwxt+'s , the stock rubys are muddy as heck in this amp, and the reverb sucks with the stock tubes).SPARKLE. Pure fender twin tone, with more bass, but not muddy at all. (A few folks have told em after reading the schem, that the clean circuit is a the direct RIP OFF of the normal fender twin). Anyhoo for the 20 min this mod will take you it is SOOOOO worth it. Really ive owned amps up to 2 grand in price. This is the BEST CLEAN i have EVER heard. I cant help think part of the reason some people dont like these amps is that they either dont play clean, or theirs just was not biased right. So yeah after a lengthy amp of my dreams search. I realized what i wanted simply did not exist in one amp. Basically my bugera 333xl, with the exact tube compliment i have in it now is my dream high gain tone (incidentally change any of those tubes and it is not). So that base is covered. My friends valveking (that i gave to him) happens to sound glorious clean. So i bit the bullet and bought ANOTHER for myself. But i knew that from testing his that it might be biased slightly cold from the get-go. And i know they are fixed biased which has always turned me off to em (that and i dont like the high gain channel). Anyways ive never done a bias mod before. Actually never made any real circuit modifications before. I realized how many people blow up themselves and their amps doing bias mods, so i thought. If i get it new, the amp is going to be at least 6 months old.No power in the caps.If i never turn it on...then no power in the caps = stress free first bias mod. Anyhoo just incase i got the the thing, and opened her up. To my pleasant surpise resistor 205 was staring me in the face. No extra work needed to access. Then my attention deficit behind accidentally snipped the wrong resistor, paniced, and managed to resolder the resistor , hopefully without frying it. I wasnt able to really measure any resistance there because it was right next to a capacitor or something. hold my leads there for 2 seconds it says no continuity, 2 seconds later it does. Anyhoo once that self induced situation was fixed, the real process was easy! ------------------------------------------------------------------------- If someone wants to do it heres the steps! (for head only) 1) Buy amp New in Box, NEVER OPENED. You want the amp to be free of all electrical charge. New ones have been sitting in a ware house or shipping container a minimum of like 6 months. Theyre dead...2)Open her up! (the head )3) pull the power tubes.4) flip her.5)Find resistor 205, its in a group of 3 on the side with the power and standby switch.6)For double safety, read across the resistor for voltage. There should be none.7) snip both sides as close to the resistor as you can. Toss over your shoulder.8)Buy one of these EXACTLY. Really, theyre PERFECT. Lots of turns for precise adjustment. Cermet pots like NEVER fail. Its small, and its got a WIDE range.http://cgi.ebay.com/100K-ohm-15-Turn-Cermet-Trim-Pots-muRata-2101Y-Lot-10_W0QQitemZ300330415948QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item45ed16774c&_trksid=p3286.m20.l1116#ht_1449wt_943Make sure its atleast 1/4 watt. 100k ohm, 9-15 turn, cermet pot.7) VERY IMPORTANT--- PRE ADJUST THE POT, don't just stick it in there. Read the center and one side, and adjust till you get 50k ohm resistance. This way you start at a realllly safe spot. 8) take the center and one leg on the pot, and solder it into where you removed the old resistor. Try to use as little heat as possible. As in move fast. Dont want anything else heating up that doesnt have to. 9) hot glue the thing stable to the board. 10) Youre done! 11) Bias up like normal! 12) Rock! ~mike~ Link to comment Share on other sites More sharing options...
Members MRAAJR Posted September 12, 2009 Members Share Posted September 12, 2009 Short story: EH 6l6/sovtek wxt+, biased to 64% dissipation. Its awesome! Best clean tone i have ever heard in my life now! So much BOUNCE, juicy bass, but tons of definition (not that this amp only seems to sound this good with sovtek 6l6gcwxt+'s , the stock rubys are muddy as heck in this amp, and the reverb sucks with the stock tubes). SPARKLE. Pure fender twin tone, with more bass, but not muddy at all. (A few folks have told em after reading the schem, that the clean circuit is a the direct RIP OFF of the normal fender twin). Anyhoo for the 20 min this mod will take you it is SOOOOO worth it. Really ive owned amps up to 2 grand in price. This is the BEST CLEAN i have EVER heard. I cant help think part of the reason some people dont like these amps is that they either dont play clean, or theirs just was not biased right. So yeah after a lengthy amp of my dreams search. I realized what i wanted simply did not exist in one amp. Basically my bugera 333xl, with the exact tube compliment i have in it now is my dream high gain tone (incidentally change any of those tubes and it is not). So that base is covered. My friends valveking (that i gave to him) happens to sound glorious clean. So i bit the bullet and bought ANOTHER for myself. But i knew that from testing his that it might be biased slightly cold from the get-go. And i know they are fixed biased which has always turned me off to em (that and i dont like the high gain channel). Anyways ive never done a bias mod before. Actually never made any real circuit modifications before. I realized how many people blow up themselves and their amps doing bias mods, so i thought. If i get it new, the amp is going to be at least 6 months old. No power in the caps. If i never turn it on...then no power in the caps = stress free first bias mod. Anyhoo just incase i got the the thing, and opened her up. To my pleasant surpise resistor 205 was staring me in the face. No extra work needed to access. Then my attention deficit behind accidentally snipped the wrong resistor, paniced, and managed to resolder the resistor , hopefully without frying it. I wasnt able to really measure any resistance there because it was right next to a capacitor or something. hold my leads there for 2 seconds it says no continuity, 2 seconds later it does. Anyhoo once that self induced situation was fixed, the real process was easy! ------------------------------------------------------------------------- If someone wants to do it heres the steps! (for head only) 1) Buy amp New in Box, NEVER OPENED. You want the amp to be free of all electrical charge. New ones have been sitting in a ware house or shipping container a minimum of like 6 months. Theyre dead... 2)Open her up! (the head ) 3) pull the power tubes. 4) flip her. 5)Find resistor 205, its in a group of 3 on the side with the power and standby switch. 6)For double safety, read across the resistor for voltage. There should be none. 7) snip both sides as close to the resistor as you can. Toss over your shoulder. 8)Buy one of these EXACTLY. Really, theyre PERFECT. Lots of turns for precise adjustment. Cermet pots like NEVER fail. Its small, and its got a WIDE range. http://cgi.ebay.com/100K-ohm-15-Turn-Cermet-Trim-Pots-muRata-2101Y-Lot-10_W0QQitemZ300330415948QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item45ed16774c&_trksid=p3286.m20.l1116#ht_1449wt_943 Make sure its atleast 1/4 watt. 100k ohm, 9-15 turn, cermet pot. 7) VERY IMPORTANT--- PRE ADJUST THE POT, don't just stick it in there. Read the center and one side, and adjust till you get 50k ohm resistance. This way you start at a realllly safe spot. 8) take the center and one leg on the pot, and solder it into where you removed the old resistor. Try to use as little heat as possible. As in move fast. Dont want anything else heating up that doesnt have to. 9) hot glue the thing stable to the board. 10) Youre done! 11) Bias up like normal! 12) Rock! ~mike~ Troll Link to comment Share on other sites More sharing options...
Members t2mikeman Posted September 12, 2009 Author Members Share Posted September 12, 2009 wa? ive been here for 8 years with 386post, and im a troll? Newb, im a troll? k. ~mike~ Ill assume you were joking . Link to comment Share on other sites More sharing options...
Members MRAAJR Posted September 12, 2009 Members Share Posted September 12, 2009 j/k Link to comment Share on other sites More sharing options...
Members t2mikeman Posted September 12, 2009 Author Members Share Posted September 12, 2009 in that case thanks for atleast responding to the thread . better than none. Link to comment Share on other sites More sharing options...
Members TheEsupremacy Posted September 12, 2009 Members Share Posted September 12, 2009 Troll Link to comment Share on other sites More sharing options...
Members solarburn Posted September 12, 2009 Members Share Posted September 12, 2009 Link to comment Share on other sites More sharing options...
Members wixedmords Posted September 12, 2009 Members Share Posted September 12, 2009 Great stuff mikeman. Glad you like the mod. Thanks for the info. Link to comment Share on other sites More sharing options...
Members Mavesicles Posted September 12, 2009 Members Share Posted September 12, 2009 Who would put money into a ValveKing? Link to comment Share on other sites More sharing options...
Members TheEsupremacy Posted September 12, 2009 Members Share Posted September 12, 2009 Who would put money into a ValveKing? Not much money, more time than anything really. Link to comment Share on other sites More sharing options...
Members Mavesicles Posted September 12, 2009 Members Share Posted September 12, 2009 Not much money, more time than anything really. That too. Link to comment Share on other sites More sharing options...
Members JesterRace51 Posted September 12, 2009 Members Share Posted September 12, 2009 That too. Mave you praised your valveking when you owned one...defended the SHIT out of it as well. I just find it funny. Mediocre, sure...but it's not a terrible amp for the price you can find one used. $250-300 for a 2 channel 100w tube head? More versatile than our 5150s too. And I will agree that the cleans on the valveking were pretty damn good. Link to comment Share on other sites More sharing options...
Members t2mikeman Posted September 15, 2009 Author Members Share Posted September 15, 2009 Who would put money into a ValveKing? Someone with ears who likes the beautiful sound of a fender twin circuit? And it cost me about 5 dollars and 30 minutes.~mike~ Link to comment Share on other sites More sharing options...
Members t2mikeman Posted September 15, 2009 Author Members Share Posted September 15, 2009 Mave you praised your valveking when you owned one...defended the {censored} out of it as well. I just find it funny. Mediocre, sure...but it's not a terrible amp for the price you can find one used. $250-300 for a 2 channel 100w tube head? More versatile than our 5150s too.And I will agree that the cleans on the valveking were pretty damn good. precisely. Honestly the gain on this thing does not float my boat at all, but $445 bucks for the best clean tone ive ever heard. Not bad at all.~mike~ Link to comment Share on other sites More sharing options...
Members kissmyace Posted September 21, 2009 Members Share Posted September 21, 2009 Mave you praised your valveking when you owned one...defended the SHIT out of it as well. I just find it funny. Mediocre, sure...but it's not a terrible amp for the price you can find one used. $250-300 for a 2 channel 100w tube head? More versatile than our 5150s too. And I will agree that the cleans on the valveking were pretty damn good. I remember that !! :lol::lol: Link to comment Share on other sites More sharing options...
Members Guvnor Posted September 21, 2009 Members Share Posted September 21, 2009 I played a 212 version of the VK the other day; not a bad amp at all... did they change the specs of those amps? I know the first ones were crap... Link to comment Share on other sites More sharing options...
Members Brick Posted September 21, 2009 Members Share Posted September 21, 2009 fucking Mave, he's a peavey elitist now Link to comment Share on other sites More sharing options...
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