12ax7 jj tesla datasheet pdf

Rca and sylvania first introduced the 12ax7 to the world in the late 1940s. Very well known tubes with excellent characteristics. Perfect for your ampeg b15s, v series or vox ac30 and more. Full and chimey mids, a tight bottom end and greatly reduced hum and noise characterize this tube. Since tubedepot is in memphis, tn, the home and main hub for fedex and usps, we get very good rates, so rest assured your heavy item will be shipped at the most affordable rates. Gorgeous mids, beautiful dynamics, and a nice 3d soundstage. It was introduced in the late 1950s and was produced by philips, mullard, telefunken, valvo, and gec among others. According to 12ax7 datasheet, the 12ax7 is a miniature highmu win triode each section of which has an individual cathcode connection. Home tubes jj tesla jj standard ecc83s 12ax7 jj, matched, balanced. Today, it is by far the most common preamp tube used for electric guitar amplification and there is an almost overwhelming supply of current production options to choose from. If you continue browsing, you agree to the use of cookies. Here is something which will make you realize better what i mean. The curves are not really bad, but do not compare to the nos tesla.

Low noise high gain this will blow every other tube made away. Twin triode, 12ax7 datasheet, 12ax7 circuit, 12ax7 data sheet. The jj ecc83s tube has several improvements in its construction from the old ecc83 version. Specification sheet for gold t12ax7goldjj specification sheet for gold.

I had a great sylvania black long plate begin to moan, which is a drag because it was warmer yet dynamic than anything else ive used. Nos 12ax7 cv492 of all the 12ax7 tubes we have tested here at tubes unlimited, these amazing cv492 smooth plate tubes made in prewar yugoslovia have tested with some of the highest umos levels we have seen. Price is for 1 tube in used, but working condition. Tungsol 12ax7 ecc83 price of nos 12ax7s got you down. This item is in stock and can be dispatched immediately. It utilizes a medium length ribbed plate design that is much like the old amperex and brimar european designs. The jj tesla ecc81 is an economically priced valve that really outperforms the chinese 12at7 that seems to be used in many modern guitar amplifiers and far eastern made amplifiers. A must have this is the best 12ax7 made today great sound great quality. I used the jj 12ax7 tubes along with jj 6l6gc power tubes to retube my old sf super reverb in place of the mismatch of cranky old tubes that have been in it since i bought it. Awsome sounding 12ax7, excellent choice for guitar amps, rich warm tone, smooth quiet operation, long lasting built with quality and detail. I a 1,18 2,45 0,86 1,72 0,48 1,02 ma operating characteristics.

This tube sports a different plate design than found in most 12ax7s. Most of the datasheets are in pdf format and some are links to other html pages. First thing that wonders me, is the jj ecc803s datasheet. One of the tube is rare with solid foil metal disk getter. It is modeled after the legendary tesla teslovak e83cc using a frame grid internally. Free shipping is limited to the contiguous 48 states. This new production tungsol 12ax7 made in russia is the answer. Nuvistors were the latest tube development at just about the same time as the introduction of the first integrated semiconductor circuits. It is a dependable, high mu double triode with reduced gain and clearer, more articulated tone than a higher gain ecc83. Vacuum tube 12ax7 ecc83, jj electronics antique electronic. Applies to shipments to germany with our standard courier service dhl when paid via paypal, credit card or lastschrift.

The ef86 is a high transconductance sharp cutoff pentode vacuum tube with noval b9a base for audiofrequency applications. Powerwalls electrical interface provides a simple connection to any home or building. The jjtesla ecc803s standard pin version is a hiperformance 12ax7 that has a spiral wound. Ecc83 vacuum tubes thomann uk thomann international. Jj electronic vacuum tubes, capacitors, amplifiers.

Tungsol vs gold lion 6v6 ive been running the gold lions in my deluxe reverb for about three years and they are still going strong. The jj 5751 is a dropin replacement for any 12ax7 ecc83 tube. Production codes wl, kc correspond to production dates of april and march 1978, respectively. Most el84s are used in combo amps and are especially prone to mechanical vibration. Preamp tubes 12ax7 ecc83 cv4004 5751 tube basics and faq. Ecc83 12ax7, 7025 u b 250 400 250 400 250 400 v r a 47 47 100 100 220 220 k. Fxr elite service manual 12ax7 multieffects audio processor preamp guitar with frequency amplifiers for acoustic guitar guitar effect service manual sgx2000 opamp guitar effect preamp guitar effect. The jj electronic 12ax7 ecc83 has quickly become a modern classic in. There is only basic information in there, even less as with an ecc83. As a result, model s acceleration is instantaneous, silent and smooth.

Compare the telefunken ecc803s datasheet, with the new made tungsol ecc803s datasheet. The nuvistor was developed by rca and it was first introduced in 1959. For me, that is no ecc803s, as all the typical things that make this tube, is not specified in the jj datasheet. Delivery times for other countries and shipping methods can be found on our shipping information page. Harmonically rich, with a detailed low end and a warm high end. The jjtesla ecc803s standard pin version is a hiperformance 12ax7 that has a spiral wound filament to reduce noise and hum. Its rechargeable lithiumion battery pack provides energy storage for solar selfconsumption, timebased control, and backup. The jj ecc803 datasheet new production as you can see here jj datasheet looks like a plain commercial ecc83 datasheet, and has not much to do with telefunken ecc803s. The 12ax7eh tube has a nice balanced sound, a very low noise floor and excellent performance in terms of microphonics. New jj electronic tesla precision gain matched octet 8x ecc83s 12ax7 tubes ebay.

Double triode ecc83s is 12ax7 high gain preamplifying double triode. It retains all of the definition and detail that the ecc83s short plate and the ecc803s long plate tubes have but it has slightly less gain than the ecc83s but a bit more. So what we see here, we have a new production jj, and the curves are less nice as an nos tesla that was unused in the box for 40 years. A combination of remarkably smooth mids, twinkling highs and a rock solid bottom end make the jj a tough tube to beat. Contactless reversing switch of received channels in t. The jj tesla ecc803s standard pin version is a hiperformance 12ax7 that has a spiral wound filament to reduce noise and hum. Classic have plugged in a tube with a totally different pinout or. Id like to revisit this thread now that a few years have passed. Tube jj tube tesla remake new version, very balanced and low noise, costperformance winner for hifi applications thomann uses cookies to give you the best shopping experience. Comenergy powerwall tesla powerwall is a fullyintegrated ac battery system for residential or light commercial use. One pair of vintage not jj tesla 12ax7 e83cc tubes. The construction is different from the jj ecc83 in that the plates are more conventional, but have a special heat dissipating fin that serves to improve efficiency and gain.

Spiral filament winding does seem to have an effect. Highgain operational amplifier metal case to99, military, cmr 80110. Jjteslovak of cadca, products prevent its widespread use. Jj electronic is a worldrenowned manufacturer of vacuum tubes, electrolytic capacitors and highend audio amplifiers. Jj 12au7ecc82 has similar construction to their legendary 12ax7ecc83. This tube sports a different plate design than found in most 12ax7 s. Please do not confuse these with the current production jj tubes. Elektroakustik, in partnership with jj tubes from the carpathian mountains of. Tube jj tube tesla remake new version, very balanced and low noise, costperformance winner for hifi applications. Ecc83 vacuum tubes at europes largest retailer of musical instruments fast delivery, 30day moneyback guarantee and 3year thomann warranty. If you place an order for a heavy or bulky item over 8 pounds, you will see your shipping options at checkout. Tesla powerwall is a fullyintegrated ac battery system for residential or light commercial use. It is very similar electrically to the octal base ef37a and the rimlock base ef40.

The jjs added cleanliness and reduced the noise floor of. Vintage frame grid tubes made in the same manner as the insanely expensive telefunkens. Very low noise and microphonics, but if youve got a really highgain phonostage the new mullard reissue might be a better choice. Jj 803s 12ax7 melbourne australia tube audio melbourne. Tesla 12ax7 e83cc real tesla not jj garage sale the.

Overall the sound is open and balanced from top to bottom, with a good deep bass. Double triode ugv uav4 3 2 1 0 0 1 2 3 4 5 6 0 50 100 150 200 250 300 350. When you look at them you cant help but think that they must be rugged and good for the musician on the road. A customer reported that the jj ecc803s tube is very warm and rich with a golden glow in voices. Jj ecc83s 12ax7 datasheet pdf download adobe acrobat pdf reader. If youre looking for a smidge more relaxed top end, give the mullard reissue a.

Price is for 1 tube which seems nos, or little used, but testing very good electrically. New jj electronic tesla precision gain matched octet 8x ecc83s 12ax7 tubes. Note, the jj e83cc is a mechanical copy of the tesla e83c. New jj electronic tesla precision gain matched octet 8x. The construction is different from the jj ecc83 in that the plates are more conventional, but have a special heat dissipating fin that serves to. Octal u f 6,3 v i f c a 1,5 a typical characteristic. The 12ax7 is especially suited for use in resistancecoupled voltage amplifiers, phase inverters, multivibrators, and numerous industrialcontrol circuits where high voltage gain is desierd. Highgain operational amplifier metal case to99, military, cmr 7090 maa502. More information for the tube type you can find here. Branded as ultron and other brands, the old tesla not jj made e83cc is an excat copy of the telefunken ecc803s.