7408 tube substitution book

No telling how many projects im goingto be taking on between now and death. Complete guide to replacements for vacuum tubes and picture tubes william smith, barry buchanan on. The 6u8a is the one tube i could do without in my life. Tubes in the tube column are directly replaceable with tubes in the replacement column. In the early 60s sylvania published a tube manual with a back section devoted to basing diagram references. Tube interchangability reference nostalgic kits central. The first section of the table lists 4 digit and european types sorted in numerical and alphabetical order with usa type designations in the second column. The first of this family of tubes to be introduced. These tables below provide a convenient way to check if a. The information below is accurate to the best of our knowledge.

This base reference gives a quick way to find which tube used the same pin connections. The shot of the getter rings shows the 7408 s are larger. The following guidelines should be taken into account. Co mb ines i n one volu me the con tent of th e bas ic book and suppleme nt s i thro ugh iv. Antique radio forums view topic tube substitution guides. The 1959 book lost some older tube data, and some of the good info in the appendix, but gained a bunch of picture tube crt data, modern tv tubes, as well as some other odd info like crystal diode data.

Th e composite tube s ubstitu tion g uid eboo k co ntain s 5 100 receiving tube s ub sti tu tions. Very happy with these as replacement for original harman kardon 7408 quarter in my hk a300 stereo amplifier. Until the jj el844 came on the scene in 2011 there really were no substitute tubes for el84 6bq5 tubes. I guess you folks all need to go dig up leo and teach him a lesson. The 6gh8 family of tubes sound just as bad as the old 7199s. This manual is the 1953 sylvania tube sub manual, and covers it all. The numbering indicates it was made for military use so it should be quite rugged. Tube substitution handbook by howard sams and a great selection of related books, art and collectibles available now at. Print page need 6u8 or 6u8 substitute info the am forum.

Substitutions were often made using lists such as this one by richard crane published in the april 1945 issue of radio news with most tubes no longer being made, substitution lists and tube adapters will be of value in the future in keeping tube radios operational. Rogers type m radio tube substitution information justradios. This topic came up on the collins reflector some time ago with one fellow insisting they were no different than any other tube. It has a large database of yarns from all the major manufacturers and many smaller brands too. Substitutions were often made using lists such as this one by richard crane published in the april 1945 issue of radio news. Thankfully, there is a solution by implementing a simple wiring change and substituting the. Thanks, thats good to know, i got one in a glass tube that is branded as rca but is actually a tung sol from the 50s nos that i got for 5. All 6v6gt include our 6 month replacement warranty. Substitute 5v4g tube for 5ar4 tube audiogon discussion forum. Dm7408 quad 2input and gates physical dimensions inches millimeters unless otherwise noted 14lead plastic dualinline package pdip, jedec ms001, 0. Com datasheet search site for electronic components and semiconductors and other semiconductors.

Also, i thought about scouring some of the local shops when i visit my brother in s. If you are replacing a 7408 and i am out of stock, any of the military spec tubes will work nicely as a substitute. The ultimate tube substitution guide january 1, 1998 edition. This page lists all of the 6v6 tubes i currently have in stock, including all. I was just wondering if there are subsitutions you can use for the 6ca4ez81 rectifier. Tube crossreference european and 4 digit number to usa. The amp calls for the 5ar4gz34 tube but mine has the 5y3gt in its place. You can use a european tube in a usa radio for example.

In most cases the tubes manufactured to the european system have an exact equivalent tube in the american system and vice versa. How to let go, fears, feeling unworthy and having guilt, perfectionism, triggers, how to change your mindset and thinking, how to overcome habits and reprogram your brain. Free vacuum tube data sheets free vacuum tube substitution guide manuals free radio tube data manuals free tube base diagrams. Maybe im getting testy in my old age, but it really annoys me to read that substitutes for a 6sq7 are.

Yarnsub is a free and independent tool to help knitters and crocheters find workable substitutes for discontinued or hard to find yarns. Free antique radio schematics, manuals, and schematics for. The kwm2a uses a bunch of them, and theyve never seemed to last worth a damn. Click here for help on how to enter cyrillic characters if you dont have a keyboard which supports them.

Datasheet search engine for electronic components and semiconductors. Review 7408 kardon labeled vintage matched tubes rca harmon power pair like a 6v6 on steroids higher plate screen voltage please do not ask. Top american libraries canadian libraries universal library community texts project gutenberg biodiversity heritage library childrens library. If anyone has more type m tube substitution information, please let us know and we will gladly add it to the below chart. Ratings are identical, and the only electrical differences are very, very minor differences in interelectrode. I love and appreciate tube based audio gear and own sixteen pieces of tube gear between my two reference systems. This tube has loads of headroom, tons of bottomend and is clean as a whistle. In addition, marine operators, microwave repair technicians, tv and radio technicians will find the handbook to be an invaluable reference tool. Sep 09, 2007 ive got an old heathkit aa111 stereo tube amp.

At over 750 pages this one has to stay broken into pieces. As my daughter megan would say to me you a crazy old man. Matched quad of bogen 7408 tubes tested strong 6v6 japan output tubes. Tube substitution handbook will be useful to antique radio buffs, classic car enthusiasts, ham operators, and collectors of vintage ham radio equipment. Without a thorough knowledge of tube types and their substitution possibilities, you may be overpaying for your new or. Try searching the tube data sheet locator, the worlds biggest index of tube datasheets other pages online with tube. In singleended tube amps one 6v6 output tube can produce about 5 watts of power. Browse our complete line of power transmission and fluid power products and services. We are not responsible for any malfunctions of equipment due to inaccuracies in these tables. That tells me the pinout is the same and the plate voltage is close enough. This is a suitable replacement for any 6v6 6v6g 6v6gt 6v6gta 6v6gty pentode tube type. I found a great tube sub manual online for free download if anyone needs one. This list is constantly and perpetually under construction.

There you go phil, this seems to be a more mordern location man, youre showing your age bud i was just 5 when that publication came out. Delivery time is estimated using our proprietary method which is based on the buyers proximity to the item location, the shipping service selected, the sellers shipping history, and other factors. Key in the code for the valve tube you wish to search for and click the query button. This base reference gives a quick way to find which tube.

This ne w t ube s ub stitut io n guidebook tube substitution. The 6gh8 and other 9ae base tubes is almost exactly the same tube except a small difference in pinout. Franks electron tube pages foreign substitutes for american types this data is scanned and may contain errors caused by the ocr software. My harman kardon ta 3000x receiveramp has four of these. My favorite tubes and their substitutes by robert h. Free vacuum tube data sheets free vacuum tube substitution. I looked this up in my howard sams tube substitution handbook and it lists the 7408 as a direct replacement. Ge lists it in their characteristics book so they must have made some as well. It is quite possible that we have the tubes under a different substitute number. Generating less power than other power tubes, 6v6s generally distort earlier. So, i started researching replacement tubes online at all of the music outlets. With the very large number of vacuum tubes or thermionic valves that were produced and as a result of the multiple vacuum tube numbering systems that were in use, there are generally equivalents for most types of tube. The ultimate tube substitution guide by charles kittleson, january 1, 1998, vacuum tube valley edition, paperback.

While the 7591 output tube is becoming more scarce and expensive, it is actually one of a family of three tubes with essentially identical characteristics. The oddmix vacuum tubes replacement substitutions tables section has a wide variety of popular tube substitutions for rare antique, vintage, exotic, original, discontinued and collectors vacuum tubes, electron tubes, audio tubes and fleming valves. In addition to the data i have scanned and posted, if youre looking for data on a particular tube you should visit tsdl on duncanamps website, or franks tube data. Payment is expected within 10 business days shipping is by usps in the small flat rate box and will ship anywhere in the good ol usa for a flat rate of 5. The owners manual of the referenced components states that the 5v4g tube can be used in place of the 5ar4 tube but to expect sonic differences. Vacuum tubes replacement substitutions tables electronic. Tube 7408 or rohre 7408 id6168, beam power tube, octal int. How to use this chart for tube substitution tube substitution is difficult without special books on it. My old ge tube substitution manual grew legs and lost itself to a unresponsible borrower awhile back. Adaptor circuits in the back of this book may help. Good luck with your vintage tube radio restorations. Tube substitution handbook abebooks shop for books.

All types listed are direct replacement for 7408 used in hifi amps. Discussion in audio hardware started by inperson, feb 6, 2007. Gerald weber describes this mod in his book tube amp talk for the guitarist and tech, in the chapter tweaking your amp for bass which is what i use my bassman 100 for. We have general electric usa, not ukand rca recieving tube manuals for sale, as well as the rca transmitting tube manual tt4, and a book of data on western electric tubes. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your. To prevent damage to equipment, it would be wise to double check with a good tube manual before actually doing a substitution. Tube substitutions there are a lot of amps that can use different tubes to change or improve their tone for different styles of playing. Antique radio supply sale flawless gemstones antique radio. All the tubes are okay but i was just wondering if all the. This playlist covers mental recovery from an eating disorder. Over the next two decades the 6v6 tube became widely used in small radios, hifi amplifiers and consoles, and instruments amps.

This is a suitable replacement for any 7408 6v6gt tube type. Vacuum tube 7408 6v6gt, beam power amplifier antique. The 7408 is a beam power pentode primarily designed for use in audio frequency power amplifier applications. Apparently these tubes are interchangeable but i cant find anything to back this up. Tubes require octal socket and may be mounted in any position. Harmon kardon 7408 labeled matched tubes rca steroids higher. There are a lot of amps that can use different tubes to change or improve their tone for different styles of playing.

My take on 14 watt tubes in general is that they have a little less of the 6v6 magic and are more like a. You can key in cyrillic characters to perform the search too. Please note that items here are free and may not be the quality of purchased items. Another spot to look, which is especially useful if youre looking for replacement types and tubes with similar bases or characteristics, is the nj7p tube. When a kid like me fights cancer read aloud for children is a special selection for childhood cancer awareness month. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. Franks electron tube pages foreign substitutes for. The 6v6 sound can be described as warm, and bluesy. Open library is an open, editable library catalog, building towards a web page for every book ever published. Tubes are guaranteed for 90 days, refund or replacement our choice. Jan 14, 2016 for the love of physics walter lewin may 16, 2011 duration.

Another spot to look, which is especially useful if youre looking for replacement types and tubes with similar bases or characteristics, is the nj7p tube database. Antique radio forums view topic 78 tube replacements. Buy products related to 6v6 tube products and see what customers say about 6v6 tube products on. Fairchild manufactures this ic in a 14lead plastic dualinline package pdip, jedec ms001, 0. Glass octal type used as output amplifier tube in highquality sound systems.