I retubed, put in a v30, and modified the circuit a little. From the luxury sedans of the 50s and 60s to the serving sizes of today it seems that everything is bigger not only in texas but across the whole country. This aint an amp for players who like to program a bunch of different. Hey guys i was looking for a good tube amp thats affordable and i came across the jet city jca50h. Nad jet city jca20hv fender stratocaster guitar forum. The jet city amplification jca2112rc 20w 1x12 tubedriven combo takes all the tone and punch of the jca20h head, adds real tube reverb and pairs it all with a. The overdrive channel is based on soldanos crunch circuit and as such it. The jca5212rc jet city 50 combo is a 2x12 all tube amp with spring driven reverb. If youve ever heard or played a marsha or an amp dave has put his brown eye mod on, the jca20h sounds pretty damn close. This is an old post but a buddy and i were recently working on tweaking the sound and came across the same issue when trying to get a nice chug without the mud, seems the od bleeds a bit but the best results came from replacing v1 with something with lower gain like a 12at7 and the rest with jj 12ax7s which reduced the mud. I bought a jca2112rc combo amp used and have found conflicting information on changing tubes. Jetcity jca5212rc sch service manual download, schematics.
Preamp gain, bass, middle, treble, master, presence, depth switch. Jet city was formed in 2009 by mike soldano and douglas white with the aim of providing quality, alltube amplifiers at an affordable price. On the flip side, bucking the trend is in their blood, so it stands to reason that several american manufacturers are leading the charge in the lower wattage amplifier game. Aug 19, 2010 got a very fast reply from greg at jet city on my 20 watt combo. Welcome to rguitar, a community devoted to the exchange of guitar related information and entertainment. It is a single channel amp with, gain, volume, reverb, bass, mids, and treble controls. Part of the design by soldano series, this extension cabinet features multiply hardwood cabinetry, 16gauge steel chassis, custom transformers, and 2 oz. Effects loop for jet city jca2112rc metropoulos forum. The slight differences in my opinion are probably attributed to the smaller iron and different power section on the jet city. Jet city 333 20w jca2112rc tube combo amp 1x12 reverb. Here is the link to his topic with the schematic to his mods on page 3. The jca100h, jca2112rc and jca48s are affordable all tube amps with the heritage and tone of a.
They also inform us that mike soldano has joined their team, and he certainly knows a lot about amp design and manufacture. Jet city likes this amp best with humbuckers, but well happily plug in anything. We were very impressed by the jca2112rc we tried in november last year. They seem awesome for the price fx loop, two channels, okay clean tone especially with the 50w version, huge amount of gain, reverb. Features are pretty standard for a straight forward low wattage tube amp. The jet city amplification jca2112rc 20w 1x12 tubedriven combo takes all the tone and punch of the jca20h head, adds real tube reverb and pairs it all with a single 12 jet city eminence speaker rated at 100w rms. Founded in 2009 in seattle, washington, thats exactly what jet city is all about. With the jca20hbes, jet city takes that concept a step furtherteaming with noted amplifier technician, builder and mod master dave friedman of rack systems to modify an existing amp in the jet city line, the 20watt jca 20h. Open quick view dialog for jet city amplification shockwave distortion guitar effects pedal. Jet city uses audiograde metal film resistors and highquality copper for all internal. Ultimately, the jet city does what i wanted, in a more straight forward package. This tab will provide bias information, and when available, downloads such as jet city amp schematics and other worthwhile information. The jet city jca20h is a single channel 20 watt alltube amp, with el84s in the poweramp. Jet city amplification jca20h owners manual pdf download.
Jet city amplification jca22h service manual pdf download. I always seem to prefer power tube crunch over preamp tube crunch. In the case in which other parts are used which constitutes an improvement, jet city amplification may, at its. Jet city jca12s 1x12 guitar speaker cabinet reverb. Rather than tinker with the circuit, i took my amp to a local amp buildertech.
The jet city was noticeably less expensive, yet still functions in the key ways i would need either amp to function. Well my amp is a jet city jca20h with a reverb, but the jca schematic isnt as close as the astroverb. The friedman mods take the amp into the modded marshall camp. I started messing with the signal drainer switch that vh4 helped me put in, and with it in the 33k position it appears to be calming it down enough for me to do a cleanish sound with the volume pretty high i may go ahead and get a blackstar htdual pedal or maybe the jet city afterburner. Jet city jca2112rc features 12 inch jet city custom eminence driver at 70 watts three 12ax7 preamp, two 12ax7 reverb and two el84 power tubes solid state rectifier multiply, voidfree hardwood cabinet and 16 gauge, coldrolled steel chassis multitapped power transformer and standard iec connector preamp, bass, middle, treble, master, presence. Welcome to jet city the jet city amplification jca2212c is a 20 watt, 2channel guitar amp combo with independent preamp and master volume controls for each channel. Jet city amplification jca2112rc guitar tube combo amplifier. I have two of the 20w combos, a jca2112rc and jca2212c.
Building on their jca20h singlechannel guitar amp, jet citys alltube 20hv features a revoiced signal path, depth control, and a postmaster effects loop. I have a bought new jca2112rc combo amp and had a line on the updated jca2212c 2channel version which i might add if the cleans are any better than the jca20vh i am going to test out today. Honestly, if you want a pure clean sound, why even buy a tube amp. The company prides itself on high levels of build quality and reliable, costeffective components paired with mikes legendary knowledge of tone circuitry and experience. This site helps you to save the earth from electronic waste. The jca2112rc has a perfectly acceptable clean tone, but you can hear that it is a tube amp clean.
V1 12ax7 input and 1st gain stage closest to the input jack. We liked the way it sounded so much, we decided to put i. Based in redmond, washington, jet city products are made in china, but designed in the usa by some seriously qualified amp gurus, including michael soldano, thds andy marshall and ben verellen, who are all based in nearby seattle, hence the jet city moniker. Easy improvements to embrace the stock jca20h is an easy amp to navigate and use. Both sound really good to me, though the 2212c has channel switching.
In the case in which other parts are used which constitutes. I guess this explains why the reverb disappeared when i put an 12at7 in v2. Sep 17, 2010 effects loop for jet city jca2112rc post by theman fri sep 17, 2010 8. Service manuals, schematics, eproms for electrical technicians. The tone controls shape the sound of both channels and are interactive which means that each control will affect the others. The thread for jet city amps, pedals, and other gear. The jet city guitar speaker also has the same dimensions as the jet city jca2112rc tube amp, so stack them up for increased speaker volume. With the jca20hbes, jet city takes that concept a step furtherteaming with noted amplifier technician, builder and mod master dave. Jet city amplification jca2112rc 20w tube guitar combo amp.
Jet city amplification jca 22h guitar amplifier mixdown. Jet city owners club page 8 telecaster guitar forum. The most redeeming feature about this amp, is the quality reverb it has. Hacking a jet city jca2112rc music electronics forum. I didnt really do anything huge, installed a depth pot, a nfb resistor switch to go between 47k and 20k, a lower gain tube in v1 and a couple of odd and end component swaps on the pcb but nothing major there.
Jca2112rc is a combo of our jca20h and jca12s, with tubedriven reverb included. Dec 31, 2012 im really happy with my jca2112rc combo after a few mods. The precense gives you a bit of tone shaping ability. Since we first encountered jet city amps, the usa brand has been steadily. Got a very fast reply from greg at jet city on my 20 watt combo. An updated cab with user convertible semiopen or closed back and a speakeremulated direct output. Easyaccess speaker connectors on the rear panel allow jca2112rc to drive external cabinets either with or without the internal jet city eminence custom driver.
Jet city jca100h and jca2112rc soldano designed guitar amp. If youre not familiar with tube amps, then you should know that 20 watts is actually pretty loud. The crunch on the jc is very nice and quite marshalllike but obviously, not an exact copy. Theres no reverb circuit, however you can use an external effect in the loop. Jet city attacks in the literal term of the word the compact tubeamp market with a small, alltube and characterful 20watt head. Jetcity jca20h sch service manual download, schematics. The amps spec, build quality and tone belie its humble price, which all adds up to an auspicious beginning for the brand. To my ears, the gaingritdirt sounds better on the jet city than the laney cub. Fx processors each with 16 awesome effects programs including reverb, modulation, delay. With other models in the pipeline including designs from other bigname designers jet city is most definitely a name to watch.
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