Members MattTele Posted June 6, 2010 Members Share Posted June 6, 2010 My amp is a Jet City JCA20H which is EXTREMELY bright its hard to dial out, my pedalboard looks like this(see picture) I cant really find a sound I'm happy with. I play rockish stuff, and metal. What can I do to my amp that will help me out?? I want a clean tone too, which makes things SO much harder for myself. What am I needing to do? Btw, Im playing a John5 Tele(2 Hums), a partscaster tele(single,minihum), and a Black Beauty LesPaul(3hums, so bassy) Help? -Matt Link to comment Share on other sites More sharing options...
Members Slaymoar Posted June 6, 2010 Members Share Posted June 6, 2010 They arent supposed to be that bright, you might have a {censored} tube somewhere.. -D Link to comment Share on other sites More sharing options...
Members MattTele Posted June 6, 2010 Author Members Share Posted June 6, 2010 how much would a retube cost? Link to comment Share on other sites More sharing options...
Members Slaymoar Posted June 6, 2010 Members Share Posted June 6, 2010 Cheap way: Just turn the amp on, turn the volume up to practice levels and then use a pen or pencil and tap each tube. If you hear one ringing funny, then you replace it. $10-20 Expensive way: 3 x 12ax7 + 2 x EL84 ...http://www.dougstubes.com/12ax7.htmlShuguang 9th Gen: 10.50 ea (need 3) http://www.dougstubes.com/el84.htmlJJ EL84: 11.00 ea (need 2) So about $55 plus shipping, but that tube combination would be worth it. Great proven tubes. Might get a bit more gain with the shuguangs too.. -D Link to comment Share on other sites More sharing options...
Members MattTele Posted June 6, 2010 Author Members Share Posted June 6, 2010 Define ringing funny haha Link to comment Share on other sites More sharing options...
Members t2mikeman Posted June 6, 2010 Members Share Posted June 6, 2010 I ditched mine because it was so bright. But you might want to try swapping the power tubes for jj's and turning down the presence. It isn't exactly a metal amp either.~mike~ Link to comment Share on other sites More sharing options...
Members newholland Posted June 6, 2010 Members Share Posted June 6, 2010 settings, praytell? Link to comment Share on other sites More sharing options...
Members Twebbz Posted June 6, 2010 Members Share Posted June 6, 2010 Don't be afraid to turn down the mid and treble controls and increase the bass. Use the presence control to give it edge. Also, pop in some JJ EL84s (have bias checked) and Electro-Harmonix 12ax7EH. If you have some cash you could pick up one NOS RFT ECC83 pre-amp tube for V1. It's a high gain, wonderfully rich, dark tube. Worth every penny in the right amp. Link to comment Share on other sites More sharing options...
Members MattTele Posted June 6, 2010 Author Members Share Posted June 6, 2010 What would you guys suggest for a new amp then? I think im about ready to move on... Link to comment Share on other sites More sharing options...
Members Yarbicus Posted June 6, 2010 Members Share Posted June 6, 2010 Hey, didn't I just see you in the pedalboard thread? I have JCA20H, too, and I love it! A preamp tube swap would likely solve your problems. I would go with JJ or Ruby 12ax7s. Also, remember that your English Muff'n is VERY bright and to NEVER NEVER NEVER turn on the Top Boost on your Metal Muff. Link to comment Share on other sites More sharing options...
Members VTM Posted June 6, 2010 Members Share Posted June 6, 2010 what cab are you using? through my jet city 2x12 with the stock tubes it was bright as hell..had the treble and presence never above 4. now im running it through a 4x12 with vintage 30's and it sounds amazing..have the treble up around 6..sounds great..i also dropped in a pair of mullard EL-84's which i read would fatten the sound up a bit, which it sounds to me like it did just that..i didnt worry about biasing the amp just because these amps are colder to get more life out of teh tubez..its sounds amazing..i've been using it over my mark III and VTM 60 as of late..and with a bad monkey in front of it, it sounds ridiculous!!!!!! don't give up! video below is just a camera mic..but it gives an okay example..the guitar i used was just a stock epi LP with the stock {censored} pickups, if that gives you any idea of what new preamp and power tubes can do...tried to embed, couldn't figure it. http://www.youtube.com/watch?v=jFS2nTV-1lc Link to comment Share on other sites More sharing options...
Members hivedestruction Posted June 6, 2010 Members Share Posted June 6, 2010 Huh, I have a stock 20, running into their matching 2x12 and I don't think it's that bright at all.. Though, I do run the master full and use the gain as a master volume. It's just nice, crunchy, and clear. Link to comment Share on other sites More sharing options...
Members newholland Posted June 6, 2010 Members Share Posted June 6, 2010 What would you guys suggest for a new amp then? I think im about ready to move on... i'd suggest you post your full rig WITH speakers, pickups, and how you dial in the amp or you may fall prey to doing something rash due to user error. 'bright' is the end product of a LOT of things, and if you want a new amp, by all means, buy one- but you're not solving it by leaving it at 'my amp is bright'. use what you've got FIRST, but figure out where the problem is. Link to comment Share on other sites More sharing options...
Members Yarbicus Posted June 6, 2010 Members Share Posted June 6, 2010 Hey, don't forget to you use the EQ pedal on your board. Looks like right now you are using it only as a boost. Try adding a bit of low mids when using your brighter guitar. I have a Warmoth/GFS Strat and a PRS SE Singlecut. I basically set the amp for the PRS and then use my EQ pedal to help out the strat. Link to comment Share on other sites More sharing options...
Members VTM Posted June 6, 2010 Members Share Posted June 6, 2010 Huh, I have a stock 20, running into their matching 2x12 and I don't think it's that bright at all.. Though, I do run the master full and use the gain as a master volume. It's just nice, crunchy, and clear. mine seemed pretty bright but im running my pregain and master opposite..amp doesn't have many tweaking options, but a lot depends on your rig!! Link to comment Share on other sites More sharing options...
Members BSS Posted June 7, 2010 Members Share Posted June 7, 2010 what cab are you using? through my jet city 2x12 with the stock tubes it was bright as hell..had the treble and presence never above 4. now im running it through a 4x12 with vintage 30's and it sounds amazing..have the treble up around 6..sounds great..i also dropped in a pair of mullard EL-84's which i read would fatten the sound up a bit, which it sounds to me like it did just that..i didnt worry about biasing the amp just because these amps are colder to get more life out of teh tubez..its sounds amazing..i've been using it over my mark III and VTM 60 as of late..and with a bad monkey in front of it, it sounds ridiculous!!!!!! don't give up! video below is just a camera mic..but it gives an okay example..the guitar i used was just a stock epi LP with the stock {censored} pickups, if that gives you any idea of what new preamp and power tubes can do...tried to embed, couldn't figure it.http://www.youtube.com/watch?v=jFS2nTV-1lc What kind of 12ax7's are you running? Link to comment Share on other sites More sharing options...
Members Dr.Picklebottom Posted June 7, 2010 Members Share Posted June 7, 2010 http://acapella.harmony-central.com/showthread.php?t=2619538 some good info in that thread. before last weekend id never changed tubes. for the jc 20w head all you have to do is unscrew the 6 screws on the back plate and apply a little pressure and you can pop the back panel off. then just swap whatever tubes you want. preamp, poweramp- acording to jet city you dont need to have the amp rebiased even with new power tubes as longs as theye el84s. btw- youre using an english muffin- i wouldnt be so quick to blame the jc for your shrill tone. thats what the english muffin sounds like to most people. Link to comment Share on other sites More sharing options...
Members BSS Posted June 8, 2010 Members Share Posted June 8, 2010 Don't be afraid to turn down the mid and treble controls and increase the bass. Use the presence control to give it edge. Also, pop in some JJ EL84s (have bias checked) and Electro-Harmonix 12ax7EH. If you have some cash you could pick up one NOS RFT ECC83 pre-amp tube for V1. It's a high gain, wonderfully rich, dark tube. Worth every penny in the right amp. I've been seriously considering investing in an RFT for mine. I find it pretty bright. What kind of tubes would you recommend in the other positions with an RFT in V1. Also looking to get rid of the fizz on the top end with gain cranked, anybody got some suggestions for tubes to help eliminate that? Link to comment Share on other sites More sharing options...
Members Dr.Picklebottom Posted June 8, 2010 Members Share Posted June 8, 2010 Also looking to get rid of the fizz on the top end with gain cranked, anybody got some suggestions for tubes to help eliminate that? i have high gain jj 12ax7s in all three preamp slots. it got rid of the high end fizzle and improved the clean and dirt tone drastically. Link to comment Share on other sites More sharing options...
Members BSS Posted June 8, 2010 Members Share Posted June 8, 2010 i have high gain jj 12ax7s in all three preamp slots. it got rid of the high end fizzle and improved the clean and dirt tone drastically. Did the jj's darken the amp a bunch? You still using stock EL84's? Link to comment Share on other sites More sharing options...
Members MattTele Posted June 11, 2010 Author Members Share Posted June 11, 2010 Thanks a ton guys for the suggestions, i only got the amp for 200 bones, so i have some money to play around with tube combos, which would you suggest for a quieter and darker tone? Also more gain if its possible? Im looking for a 4x12 and it gets pretty expensive quick. -Mattsorry for the late late reply. Link to comment Share on other sites More sharing options...
Members MattTele Posted June 11, 2010 Author Members Share Posted June 11, 2010 Hey, didn't I just see you in the pedalboard thread? I have JCA20H, too, and I love it! A preamp tube swap would likely solve your problems. I would go with JJ or Ruby 12ax7s. Also, remember that your English Muff'n is VERY bright and to NEVER NEVER NEVER turn on the Top Boost on your Metal Muff. Yeah that top boost is basically useless haha, I took the English Muff'n off the board for now. untill i replace tubes. Link to comment Share on other sites More sharing options...
Members BSS Posted June 11, 2010 Members Share Posted June 11, 2010 Thanks a ton guys for the suggestions, i only got the amp for 200 bones, so i have some money to play around with tube combos, which would you suggest for a quieter and darker tone? Also more gain if its possible? Im looking for a 4x12 and it gets pretty expensive quick. -Mattsorry for the late late reply. Maybe someone else can reply with experience, but I've read that a NOS RFT ecc83 is a darker, high gain tube, don't know how quiet they are. I may try one out in my JCA20H. Link to comment Share on other sites More sharing options...
Members Duesentrieb Posted June 11, 2010 Members Share Posted June 11, 2010 Yup, RFT ECC83 is on the darker (and gainy) side, To the original thread poster:check preamp tubes AND your bias/power tubes. Sounds like its running extremely on the cold side.here's a biasing tutorial for the 20H[Youtube][/Youtube] Link to comment Share on other sites More sharing options...
Members Duesentrieb Posted June 11, 2010 Members Share Posted June 11, 2010 btw - anybody knows when the 50H will be shipped to the stores - Doug? Are you out there? Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.