Ive been curious about the debate using KT66's, I'll have to read up a bit more.

Moderators: greatmutah, GuitarBilly
GRIMESPACE wrote:The following list of effects found to be compatible with the JCA effects loop was compiled by GuitarBilly74. I'll continue to update / modify the list as needed.
Delay:
Hardwire Delay
TC Nova Delay
TC Nova Repeater Delay
TC Flashback
Boss DD-20
Tech 21 D.L.A/boost
Eventide Time Factor
BlackCollarGuitar wrote:As of right now this is the only pic I have. I also painted the back grill white and am waiting on white chickenhead knobs.
Ive been curious about the debate using KT66's, I'll have to read up a bit more.
murph100 wrote:Hi Guys, FINALLY got my 100HDM yesterday after months of waiting impatiently, reading all the posts here only made the waiting worse !
HOWEVER ... When finally I plugged in and cranked it up I was not very impressed, actually very disappointed. It sounded nothing like the clips from Fast Red Pony Car and any other good clips I've heard, despite the same settings, even went as far as using the Hardwire CM-2 ( which did help a lot ). This was through a Marshall Vintage Modern 4 X 12 which is killer with my other amps.
On all 3 guitars I have, the HDM was just ok. It almost gave my humbuckers ( particularly my Bare Knuckles Steve Stevens ) sound like I had the neck single coil pickup on as well, very weird. Also whilst I'm not a huge gain head, my 100 HDM does not seem to have a lot of gain, even when maxed ( very little difference between 7 and maxed )
So maybe one or more of the preamp tubes aint doing its thing or something, or is this actually the way its meant to be ?
I bought a VHT Special 6 Ultra just for a laugh while I was waiting for the HDM to come back in to stock, and it pisses all over the HDM !! ... obviously not in volume but just tons of great tones, it even has more gain![]()
Any ideas or have I got a dud ?
murph100 wrote:The channels do change alright, I reckon its either probably a crappy 12AX7 ... now why didn't I think about swapping in the good ones from the VHT![]()
As for volume, I've played it at every volume all the way to max ( paint is still just about on one wall) and still no improvement.
Funny thing is though, the crunch channel aint bad, and when clean boosted with the CM2 its pretty neat ... but still not a patch on the cheap assed VHT
So next up is the tube swap, failing that its off to the Amp Tech, I'll keep you posted.
mjtripper wrote:Looks like the jca2212 - the combo jca22 - is the musicians friend stupid deal of the day today for $300. That's a lot of amp for 300 bucks.
extollo wrote:mjtripper wrote:Looks like the jca2212 - the combo jca22 - is the musicians friend stupid deal of the day today for $300. That's a lot of amp for 300 bucks.
NAD: Took delivery on this deal today. UPS actually delivered it in one piece. After 5min 'confirm it works' test: easy to bond with the crunch esp with treb & presence very low - not sure yet about the OD. Plan to spend some quality time with it this weekend.
edit: just saw new announced low price for the 50w Combo $399 - available at jet city website. good price there.
Ostinato Rubato wrote:"That's the second boomery bro on this forum I've helped seduce to the greenside."
"Slow and steady gets to **** again eventually"
Ostinato Rubato wrote:"That's the second boomery bro on this forum I've helped seduce to the greenside."
"Slow and steady gets to **** again eventually"
BlackCollarGuitar wrote:As of right now this is the only pic I have. I also painted the back grill white and am waiting on white chickenhead knobs.
Ive been curious about the debate using KT66's, I'll have to read up a bit more.
BlackCollarGuitar wrote:Hey guys, another new member here. Been searching around for mod ideas on the Jet City amps. If anyone has any suggestions on what to try next that would be awesome
I got a JCA 50H, I have done some custom cosmetic work myself. I run the head through two peavey 212 cabs with Celestion EK-85's, which ive read are very similar to V30's but more bass?
On order I have four JJ 12AX7's, not sure yet to order a fifth, use the chinese 12ax7 somewhere or another brand.
Also waiting on Genelax Gold Lion KT66's for the power section.
If anyones interested I can post a comparison video of stock vs. these tubes once I receive them!
GRIMESPACE wrote:Tubes, Bias, and Depth control make a huge difference.
What speakers are you running?
murph100 wrote: I now see why most guys here and elsewhere tend to use the Crunch for everything, so what makes the Crunch channel so much better than the OD channel, and what are the best mods to make the lead channel better ?
extollo wrote:GRIMESPACE wrote:Tubes, Bias, and Depth control make a huge difference.
What speakers are you running?
stock emi that came with the combo. not seeing a need to change it in the near term. i'll likely do the depth mod & tube swaps though. i was going to do the clean/crunch switch, but after spending some time with the amp i dont see a value in doing that unless it is accompanied with some voicing changes as well. not a priority.
murph100 wrote:OK finally got a chance to let rip with full set of new tubes ... WOW ! What a difference !! Much more gain, but also way more dynamic, cleans up better using vol and that singing lead tone is there in bucket loads, LOVE IT !!![]()
I retubed with JJ 6L6, Tungsol 12AX7 & JJ 12 AX7, all from Karl at http://www.karltone.co.uk who was really helpful and very efficient . He had no Mullards in stock so I'll get that at a later stage.
So now I'm really digging the amp, especially the Crunch channel with a clean boost, absolute killer tone ! I now see why most guys here and elsewhere tend to use the Crunch for everything, so what makes the Crunch channel so much better than the OD channel, and what are the best mods to make the lead channel better ?
Ostinato Rubato wrote:"That's the second boomery bro on this forum I've helped seduce to the greenside."
"Slow and steady gets to **** again eventually"
GRIMESPACE wrote:Might have to give the Mullard a try on the next go-round. Planning to put in 6L6WXT+ in the power section, too.
Jay - have you tried a 5751 in V1 or PI yet? I really want to bring the gain down, and am wondering if that'd be better than doing any more mods.
extollo wrote:GRIMESPACE wrote:Tubes, Bias, and Depth control make a huge difference.
What speakers are you running?
stock emi that came with the combo. not seeing a need to change it in the near term. i'll likely do the depth mod & tube swaps though. i was going to do the clean/crunch switch, but after spending some time with the amp i dont see a value in doing that unless it is accompanied with some voicing changes as well. not a priority.
murph100 wrote: I now see why most guys here and elsewhere tend to use the Crunch for everything, so what makes the Crunch channel so much better than the OD channel, and what are the best mods to make the lead channel better ?
I'm hearing an odd mid overtone in the OD channel - honky sounding like an overdriven 6" speaker. maybe better tubes will clear that up.
I'm feeling the same way about the channels - i'll be using crunch & will be looking tinker with the OD channel.
Jay wrote:
Tubes will help some of the honk. The SLO mod will clear things up quite a bit, but bump up the gain. Lowering the value of some of the coupling caps and slightly increasing the peakers will add clarity, or if you want to get nuts, I'll go over a huge (but easy) mod to really add some scream. Think very hotrodded Marshall. Otherwise, a lot of dudes (myself included) find the 22H to be a bit too wooly in stock form.