The 12ax7m is balsy, clear well defined low end, decent tone, low noise if shielded properly. Groove tubes kt88sv quad new exclusive gt design with special heat wings attached to plate for more power, longer life, and better tone. Groove tubes soulo series 75 operating manual pdf download. Chinalowrated tubes have early breakup and distortion, wide range and softer attack good for rock and blues solos. Instrument input three megohm high impedance for use with. The ge is a faithful reproduction of the original clear top 6l6. Electric guitar, electroacoustic guitar, piezoelectric pickups. Groove tubes gt12ay7 select preamp tube musicians friend. The groove tubes gt12ay7 select preamp tube is closest in specification to a 12ax7 and can be exchanged with a slight drop in gain. I was just up at the groove tubes corporate officesproduction center this past week and picked up a mic to demo. This fascination led to aspen and a team of technical experts to reevaluate the way tubes were tested and matched. The groove tubes gt6l6r power tubes duet gives you what may just be the most reliable of the currently made tubes, with slightly less power and a more aggressive edge when pushed into distortion.
The two gl6 tubes were old and not even the same brand so i replaced them with a pair of matched groove tube gt6lbr medium duet amplifier tubes. The gt66 is a largediaphragm tube condenser, with a fixed cardioid polar pattern. Id like to try the recommended tubes as they are cheap and people say they work well in the amp. Sold as single tubes, matched duets, quartets and sextets. View and download groove tubes soulo series 75 operating manual online.
Aspen and associates schematics aspen and associates. I was told by guitar center that the sterling audio st66 condenser mic is equivalent to the groove tubes gt66 and that the mics are made by the same mfr aspen pittman. Groove tubes gold series gt6l6chp matched power tubes. Groove tubes gt6l6chp pentode our most recent release of a totally redesigned 6l6c featuring addition of pure nickel carborized black plate construction, this is the same material used on the classic rca black plate versions of the 50s. Gt40 tube condenser microphone gt40 specifications preamp topology low noise tube based class a design tube type selected lownoise gt6205musa polar patterns interchangeable capsules c1 cardioid standard c2 hypercardioid optional c3 omni optional high pass filter switchable 75hz, 12dboctave. Nov 26, 2004 i just got the tubes in and tried them out. Groove tubes power tubes are matched and rated in low, medium and high output levels. Quite simply the best 8pin pentode tubes you can buy that are specifically designed and tested for musical instrument amplification. Egroove tubes re issue super premium groove tubes 25 % discount groove tubes super premium valves are specially burst tested by us. Groove tubes gt6l6ge gold series medium output power tubes.
Only the gt el34m is currently available, and even some of these are now being sold by new gt owner fender with stickers on the glass rather than the original imprinted orange gt logo and numeric information. Gt exclusive design highperformance 6l6 black plate with heat sink wings like the gt e34ls and kt88sv. The gt 6l6s has also been described as sweet and punchy. Big bottom, very dynamic, most powerful in its class. Groove tubes highestoutput 6550 is slightly easier to push into distortion than the original g. Groove tubes gold series gtel34m matched power tubes. Groove tubes legacy mic owners manuals gt44 owners manual. This tube was originally intended to be produced here. The power rating on my new tubes are 4 and they are biased at 38 ma. Groove tubes gt6l6ge gold series medium output power. With respect to the use of el34s, it states on the case of the amp next to the power tubes that you can use either el34s or 6v6s. I have not been able to locate a matched quad of groove tubes gt6ca7ge.
The flagship of the gt 6l6 line, it looks and sounds exactly like the original g. The lowbudget movie satirizes television and the counterculture of the early 1970s. The biggest collection of groove tubes manuals and schematics. Egroove tubes re issue super premium mesa select groove tubes 25 % discount mesa select for use in mesa boogies.
See more groove tubes legacy mic owners manuals gt44 owners manual. Feb 23, 2003 i was just up at the groove tubes corporate officesproduction center this past week and picked up a mic to demo. Groove tubes was started in the late 1970s by aspen pittman, who had a lifelong fascination with tubes and tube tone. This is the best tone yet from an amp that is already my all time favorite amp. Groove tubes manuals, schematics and brochures hifi manuals. Get the guaranteed best price on power tubes like the groove tubes gold series gtkt66c matched power tubes at musicians friend. The design owes a lot to the established groove tubes gt44 microphone, and combines a shockmounted 0. I would not choose an ntk over a 6667 unless the source called for it. If so, you should have a qualified service tech rebias your amp for the new tubes. Further improving the design, we added gts exclusive heat sink wings to the plate assembly. If i dont like them, ill look elsewhere and im not out a whole lot of money.
He was liquidating his personal stash to make room for the new recording studio rooms in the old groove tubes complex. Groove tubes gt6550r medium power amplifier tube, matched. Gt66 tube condenser microphone gt66 specifications preamp topology low noise tube based class a design tube type seleted lownoise gt6205musa polar pattern fixed cardioid high pass filter switchable 75hz,12dboctave attenuation pad switchable 10db frequency response 20hz 20khz equivalent noise 23db spl a. I just put some groove tubes el34ms in my yjm100 today and man do they sound good. The brick tube preamplifier the brick specifications mic input nominal 150 ohms source reflected load presented to source is 600 ohms.
It used a subminiature gt6205m tube, which we believe was a pentode, wired as a triode in a class a circuit. Groove tubes gold series gtkt66c matched power tubes. Right now it has a couple tung sols and a eh in it. Mark ewing the gt66 is a chunky microphone with a matt nickel finish it weighs about 530g and measures 47mm in diameter and 190mm in length. Wtf, if i dont like it i can always sell it for the same or if not, only lose maybe a few bucks on it. Get a low price and free shipping on thousands of items. Groove tubes gold series gtel34m matched power tubes medium. A collection of skits that make fun of 1970s television, featuring early appearances by chevy chase and richard belzer.
The groove tubes gt66 valve mic with its psm1 power supply. This mic is a pretty standard large diaphragm condenser made by groove tubes. The groove tube is a 1974 american independent comedy film written and produced by ken shapiro and starring shapiro, richard belzer and chevy chase. Discussion in audio hardware started by bill hausmann, aug 9, 2003.
Groove tubes gt5u4 gz32 select rectifier tube model. Russian made, these tubes are the same as stock 5881 power tubes, but theyre specially matched by groove tubes, resulting in a better sound and. Never attempt to change the tube on the gt 44, gt66 or gt67 or. View and download groove tubes gt5751m specifications online. Shop for the groove tubes gold series gtel34m matched power tubes in medium 47 gt rating quartet and receive free shipping and guaranteed lowest price. This is a newoldstock rack mount guitar amp acquired from its inventor aspen pittman.
The groove tubes 6l6s is slovakian made power tube that has a very aggressive, dynamic tone. Here is the link to the musicains friend listing for the sterling audio st66. Thank you for your purchase of a highquality groove tubes. The good news, is that once this is done, you should be able to replace your power tubes with groove tubes of the same type and rating without bias adjustment. With ken shapiro, richard belzer, chevy chase, buzzy linhart. Find great deals on ebay for groove tubes gt66 and groove tubes microphone. Groove tubes gt6l6ge pentode this is our flagship gt tube, the one we spent nearly 4 years developing from scratch after purchasing the original general electric design, the original rca grid winding machines that made this tube, and tons of the original materials. These are chinese mullard dual getter copies that groove tubes fender makes. Good for bass amps and metal, when more pronounced note definition is desired with just a touch of distortion. Groove tubes gt6l6r russian power tubes medium duet. The capsule is groove tubes exclusive 32mm disk resonator design, in a singlesided implementation the rear diaphragm was not sputtered. See more groove tubes legacy owners manuals vipre package.