5u4 Vs 5ar4

Not a single failure - I recommend this tube as an excellent replacement for any 5AR4 / GZ34 tube. By having this information on a chart you can choose a rectifier tube that will best suit your playing style. With the 5u4 I had about a 30v drop in voltage. +1 with sonar on the BF/GZX34 and AC568 and later SF/5U4 thing. Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts. A due anni dalla nascita Audioantiquary si è imposta nel mercato internazionale dell'audio vintage di qualità e delle oramai rare valvole di produzione storica affermandosi come una delle realtà più competenti e serie. Tubes in the "Tube" column are directly replaceable with tubes in the "Replacement" column. 5ar4 gz34 450v 5v/1. These include 5V4-G/GA, 5Y3-GT, 5AR4, 5U4-G/GA/GB, 5V3, 5AU4, 5R4, 5AS4, and 274B. There is at least one Web page with some comparative rankings, and like so many NOS tubes it may all come down to how much you want to spend. , 5AR4 vs 5u4G); in some case, changes were practically none. You may be able to use a 5V4 instead. SF schematics, both versions show the same power transformer part number, with the same secondary AC voltage ( 330v. Zoom out and see the bigger picture, or focus in on an unprecedented level of granular data. 54692 - Request a quotation. The chart is most useful when you use it as a guide to the relative voltage drops of different rectifiers. This Gold Series vacuum tube can be used in many 5AR4 and 5U4 amps for lower levels. So if you use a 5AR4 in an amp designed for a 5U4 you will have higher voltages all around, which might exceed the ratings of the existing filter caps. Search the history of over 376 billion web pages on the Internet. Of the common rectifiers, I prefer the 5AR4 for its slow-start capabilities (it ramps up the juice from the PS over a few seconds as opposed to instantaneously with tubes like the 5U4), then the 5R4. The YJR converts your amp's vacuum tube rectifier to a solid state rectifier, reducing tube sag for a tighter sound and feel. Tweed early Super and early Bassman. We can readily design a "rectifier" with different modes, say from full solid-state, to 5U4, to 5AR4, to 5Y3, to 6X4 and beyond. 60 seconds. HINT : always pull B+ from pin 8 regardless of which rectifier you are using. For a 5AR4 I believe it's around 40uF, so there's a good chance the 5U4 isn't going to work if the amp was designed for a 5AR4. You will still get a little "sag" as compared to the diode,but it will give less sag than a 5U4. A perfect tube to replace the chinese or sovtek 5AR4's that we have all grown to dislike so much The JJ GZ34 will get your Deluxe sounding like a vintage amp. Biggest change in princeton reverbs over the years was going to a 5u4 from a 5ar4 with the same PT although current draw will be 1 more amp. The PT will be straining due to the extra load on it since it's probably rated for 2 Amps. 5u4g(初期型の太管) 5u4gb §5y3ファミリー. 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. Spend over $200 and get free shipping! We also do special orders. A really nice one is the NOS Russian 5U3C tube, the filaments zig-zag kinda like a 2A3. ) The 5AR4 drops about 17 V and the 5U4GB drops about 50- 55V. 5U4GB in place of 5AR4/GZ34 in AD30H? Can't say for sure but I think one problem might be that the heater filament current is rather higher with the 5U4. That means a 5U4G could draw more than a 5AR4 circuit was designed to handle, but not vice-versa. Weber Copper Cap Rectifiers are solid state rectifier replacement devices for use in place of vintage tube rectifiers. Valve Art 274B is the export brand of Shuguang. Common examples of filament-type rectifier tubes would be 5W4, 5Y3, 5U4, 5R4, 80, 83, etc. An excellent and reliable choice, the Tung-Sol 5AR4 comes with a classic brown base and a tandem supported getter cup. Plate #2 0. These include 5V4-G/GA, 5Y3-GT, 5AR4, 5U4-G/GA/GB, 5V3, 5AU4, 5R4, 5AS4, and 274B. I have found the voltage drops listed to be a pretty accurate rule of thumb. Fender offered three versions of the Champ during the Blackface period. Pricing does NOT INCLUDING 3" Foam Vault/Triple Layer Carton Box. To prevent damage to equipment, it would be wise to double check with a good tube manual before actually doing a substitution. Highest Quality resistors in key signal path applications. All MWI M-type capacitors in signal path. Discussion in 'Audio Hardware' started by Steve Hoffman, May 24, 2014. The YJR is a direct plug-in replacement adapter for use in most amplifiers that use 5AR4/GZ34, 5U4, 5Y3 or similar full-wave rectifier tubes. Manley vs Shindo Monbrison. 3) GZ37 (3 amp filament current) 4) 5V4G/A (Possibly lower if plate current of the power tubes is high enough) 5) 5U4/G/A/B (3 amp filament current) 6) 5R4G/A/B. So when using a 5AR4, or any other rectifier that is stiffer then a 5U4, rectified B+ is always a bit too high. A tube rectifier will also give you a few less volts in the power supply. This is the earliest philips brand of 5AR4=GZ34=CV1377. In the case of a 5U4, for instance, this is a savings of 15 watts. Sophia Electric™ 274B/274A Rigid & Mesh Plate Valves Sophia Electric™ 274B valve is a premium rectifier valve for a 5U4/5R4/5AR4* direct replacement with 3X longer plate structure, thus it has a deeper, wider sound stage and even smoothier sound than Mullard 5AR4. The white print on the glass is has the Philips logo and the Blackburn, UK factory code is etched in the glass. Rowe Price Capital Appreciation Fund; 2. GZ34 vs GZ37. is the same baseout but also the same filiment current-is it the 5AR4 or 5R4? 5U4GB vs. with the value of k varying from 0. SUBSCRIPTS FOR MULTI-UNIT TUBES: b = Beam Power Unit. That means a 5U4G could draw more than a 5AR4 circuit was designed to handle, but not vice-versa. 6sn7 : 5692 vt231 6n8p ecc32 cv181 ecc33 ecc34 b65 6bl7 6bx7 6180. The 5U4 is rated at 275 ma. I don't know where I got this from, but given the discussions of late regarding (over) voltages, I thought this table of common rectifier specifications might be useful to the forum. Pretty sure the voltage drop is between a 5U4GB and a 5AR4. Click here to buy complete sets of tubes for your Z amps from The Tube Store. Check with Kirk before rolling the tubes. Title: 12AU7A 12AU7 7AU7 Author: General Electric Subject: JA-FP-2000-12-26 Created Date: 12/26/2000 5:48:55 PM. A couple of types are left off. You can key in Cyrillic characters to perform the search too. A tube rectifier will also give you a few less volts in the power supply. Unbeatable prices on thousands of guaranteed vacuum tubes for sale, vintage NOS hi-fi audio tubes, radio tubes, ham and industrial ready to ship. This base reference gives a quick way to find which tube used the same pin connections. You've got some ears!The only difference in "tone" I can say I've ever noticed between rectifiers is more sag from a lower power rect. I've a build on the back burner that will be using the 6CA4. The PT will be straining due to the extra load on it since it's probably rated for 2 Amps. 01a : 6829 : 5y3 : 6eu8: 45 : 6842 : 6ab4 : 6f6gt: 5654 : 6939 : 6ah6 : 6f6gt/g: 5670 : 6973 : 6ak5 : 6fg6: 5686 : 7025 : 6ak5w : 6gh8: 5687 : 7119 : 6ak6 : 6gh8a. 003 for the 5AR4, to. Appendix A Useful Formulas and Equations the 5AR4, 5U4-GB, 279. My anthem has originally had a 5AR4 but came with a JAN 5Y3GT in the power supply. Title: 5U4GB Author: RCA Subject: FP-2011-12-10 Created Date: 12/10/2011 9:04:11 PM. Another thought might be to go with SS diodes in place of the 5AR4 and install a damper tube where the 5AR4 was. Most manufacturers using the 5Z4 can tell you which NOS tubes are approved for use in their equipment. The following should be direct substitutions. almost same 6. If I remember right the Rx Jr has the same 3 amp tap as all the other Zs so you could run a 5Y3, 5V4, 5U4, or 5AR4 (GZ34). A standby switch was included as a feature on tube guitar amplifiers, not to give the player instant access to the amp's performance mode, but actually for a much more important reason—the preservation of the tubes themselves. What's your best 5U4GB rectifier tube and why? I recently acquired a 9 watt Class A design 300B tube integrated that came with a 40's NOS Japan 5u4gb rectifier that I wanted to compare to some of the best that's available. You may be able to use a 5V4 instead. Finding one cheap (especially since the launch of the heritage stuff) means it's usually one in need of some TLC and/or major repairs. -Swapping out your 5AR4/GZ34 with a 5R4 is a great way to lower the volume/sweet spot of more powerful amps like tweed Bassmans and Super Reverbs. Tweed early Super and early Bassman. A couple of types are left off. +1 with sonar on the BF/GZX34 and AC568 and later SF/5U4 thing. A rectifier is not in the signal chain and should have little if any effect on the tone. Back to top. When you change the rectifier tube in an amp, it changes the voltages in an amp. The power transformer is what isolates the output terminals from the line and makes it safe. 5AR4 - NOS, Philips. Rectifier tube is 5U4. So you could pick up a NOS 5V4 for less than 20 bucks off ebay (mine was 15) and try it for even less sag. Similar voltage drop as a 5U4GB, but it only draws 2 volts. This banner text can have markup. com Using a 5Y3, your B+ voltage to the output tubes probably drop around 40V DC more compared to the GZ34. The amp will run but with that much lower B+ its tone will probably sound different. Step 4: Change the 5U4 rectifier tube to a 5AR4/GZ34 and you are ready to check bias range. I never recommended trying to use a 5AR4 at the voltages you'd use a 5R4 at, it would be foolish to do so. Title: 5R4GY Author: RCA Subject: JA-FP-2002-06-04 Created Date: 6/4/2002 10:59:43 PM. Buy 5AR4/GZ34/U77 - Genalex Gold Lion: Parts - Amazon. The 5U4 is rated at 275 ma. You can use the search to find service types or go to the service type lists that you can access from the page More Tube Related Stuff. 5U4G-Mesh uses as Octal Socket socket, of which only five pins are used (and one of those is electrically not connected). The 5Z4GT is good for 350 V on the plate vs. 250ma for the 5AR4. Tube Interchangability Reference. Use when less 'sag' is desired in the power supply; just switch back to the tube rectifier when 'sag' is desired. Watford Valves, one of Europe's leading suppliers of tested, graded and guaranteed valves to the professional music industry. 41; The new Russian Svetlana 5U3C 5U4G /5Z3P /5U4G /274B /5AR4 /GZ34 tube USD $28. It is really nice with a strat and a silver bell. Use of straight-bottled tubes (ditto the 5AR4) though would allow more room for ventilation as the 2 rectifier tubes are close together. By having this information on a chart you can choose a rectifier tube that will best suit your playing style. This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes. 5A 6550 -- 1. The chart is most useful when you use it as a guide to the relative voltage drops of different rectifiers. theo em thì hai bóng này tuy thay đổi cho nhau được nhưng hoạt động trong mạch amp thì khác nhau. Sovtek 6L6WXT+ Power Tube - Shop with AmpTubes and get 5% off your first order. The difference in plate voltage on the tubes with a 5U4 vs 5AR4 is considerably less than 10%; whether you can hear this difference or not is something we won't comment on, but in actual measurements of the unit, there isn't any discernible difference. It enables organizations to make the right engineering or sourcing decision--every time. I've looked at the 6CA4 and the 5AR4. Solid State Rectifier Direct plug-in replacement for 5AR4, 5U4 and 5Y3 rectifier vacuum tubes in amplifiers with center tapped secondary power transformer. It will provide great performance and reliability in the tradition expected of Tung Sol tubes. Things are never quiet here at the 6th Street Bridge. Regarding the 5R4's ratings, my Sylvania Tube Manual says with a capacitor input filter, it's good for 150 ma. 450 V for the 5AR4. We also use these in Mesa Dual and Triple Rectifier amps in place of the stock 5U4's to get a little less sag but to maintain that rectifier sound. Not surprisingly for a company with a studio arm, the old looks were workmanlike and probably low in WAF. We test our rectifier tubes on a tube tester that tests each half individually to insure that both sides are equally strong. I do know that the 5U4GB pulls 3 amps compared to 2 for the GZ34, so the power transformer has to be able to handle the extra current. Pricing does NOT INCLUDING 3" Foam Vault/Triple Layer Carton Box. All I know are of outstanding quality. 9 450 402 10 Yes 5V4-GA 175 1400 2 375 387 25 Yes 5V4-G 175 1400 2 375 386 26 Yes 5U4-GA 250 1550 3 450 379 33 No 5U4-GB 275 1550 3 450 377 35 No 5U4-G 225 1550 3 450 377 35 No CV378 / GZ37 250 1500 2. if EL34 get 8 W ,probably to get 6. Hendrix owned a Thunderbolt and Page was known to use Supros on the early Led Zeppelin recordings. In some cases dropping resistors should be used if the higher output voltages often yielded with these diodes create an unsafe condition. A válvula 5AR4 tem um tempo de aquecimento maior que a válvula 5U4 e promove um "soft-start" mais demorado e suave. Check with Kirk before rolling the tubes. So you could pick up a NOS 5V4 for less than 20 bucks off ebay (mine was 15) and try it for even less sag. We know that the 5U4 drops more voltage than the GZ34, yet both schematics show 415 DC at the output tube plates. A GZ-34/5U4 and two 6L6GCs provide the clean power while the unique harmonic filter vibrato and classic preamp topology generate tones from spanky clean to Fillmore Gypsy. 5R4 rectifiers (any suffix, GY, GA, GB, GYB, etc) are pin compatible with 5Y3, 5U4, 5V4 and 5AR4/GZ34 rectifiers. 2 Input Savage-Design Preamp, Tremolo and Power Amp Circuitry. Amplifier was designed utilizing four tubes, one 6N1P (Input), two 807 (Output) and 1-5U4 (Rectifier) can be substituted with 5Y3, GR34 or 5AR4. Re: How does this work again?, you can use a 5U4GB in place of a GZ34 The 5U4 has more voltage drop than the 5AR4. The HT current is seldom a problem in these kind of swaps, but the *heater* current often is. Tube Cross-reference Guide. GZ34 (or 5AR4:) Similar, if not identical, the British GZ34 was an ingredient in the original Vox AC30 of the early '60s, while the American 5AR4 was standard equipment in many larger Fender amps. Be sure to check with an amp tech before swapping different tubes. Similar voltage drop as a 5U4GB, but it only draws 2 volts. $6,999 USD 2019 Pricing; More angles from: Soundstage Network. Bottom line is that if you have a Fender, use a 5U4 or 5AR4, not a 5R4. A period-correct 5U4 rectifier can be substituted for gain and feel that’s truer to vintage Pros and a 12AX7 can be used in V1 to hasten overdrive onset. All MWI M-type capacitors in signal path. If you're used to using the Sovtek and Chinese variants you'll be pleasantly surprised. Rectifiers, even if they are the same type, aren't all the same, also the power tubes all react differently to the rectifier in my experience. Some will argue this is a bad thing, and I'll go along with that for the most part. High current power rectifiers. Not a single failure - I recommend this tube as an excellent replacement for any 5AR4 / GZ34 tube. Tweed early Super and early Bassman. Sonically (depending on brand - Tungsol is best, KenRad, Raytheon also very good, RCA & Sylvania a bit less but still good) the best but sometimes had a reputation for not being reliable. GZ34/5AR4 vs 5Y3GT rectifier tube replacements Community. The G means glass, the early version is the 5U4G which is ST shaped. Diese Typen sind elektrisch nahezu gleichwertig. 5 W is normal. Macht in der Ausgangsleistung anstatt 17V nur noch 15,5V an den LS-Klemmen. Most of the time they are interchangeable, but make sure to verify that with your particular amp!. Looking for some input. Don't know if the audio will work out but I can hear the differences. Be sure to check with an amp tech before swapping different tubes. MoB, is that true? 5AR4 production was halted by all manufacturers in the mid 60s???? Why on earth? As I recall, Fender switched over to the 5U4GB at the beginning of the SF era, no? I think the 5U4 was a less expensive tube than the 5AR4, both would get the job done, so Fender switched to cut costs. The GZ34 is generally accepted as the best vacuum tube rectifier made. Product Description. 003 for the 5AR4, to. 9 450 402 10 Yes 5V4-GA 175 1400 2 375 387 25 Yes 5V4-G 175 1400 2 375 386 26 Yes 5U4-GA 250 1550 3 450 379 33 No 5U4-GB 275 1550 3 450 377 35 No 5U4-G 225 1550 3 450 377 35 No CV378 / GZ37 250 1500 2. The major benefit has been a dramatic improvement in dynamic range, micro detail with an increase in speed. Sovtek 5AR4s work nicely in amps such as the Mesa Rectifier series which use the 5U4. Rectifier tube is 5AR4/ GZ34. Sounded more hi-fi ish. $6,999 USD 2019 Pricing; More angles from: Soundstage Network. (IH) rectifiers: U52, 5U4 (5U4G). Do not attempt to use 5Y3, 5V4 or 5U4 types. Hi, Can anyone tell me what the differences are between the following tubes? 5U4 5U4G 5U4GA 5U4GB. It also has a MAX DC Output current rating of 125ma vs. 5U4GA, 5U4GB, 5AS4, CV1575, 5U4G (large ST tube - electrically equivalent but won't fit in some circuits) 5R4. To prevent damage to equipment, it would be wise to double check with a good tube manual before actually doing a substitution. A BF PRinceton REverb or any other FEnder amp that was spec'd for a GZ34/5AR4 does not like to see a 5U4 in itand will not function properly. What's your best 5U4GB rectifier tube and why? I recently acquired a 9 watt Class A design 300B tube integrated that came with a 40's NOS Japan 5u4gb rectifier that I wanted to compare to some of the best that's available. Spec said will be get 10W rms with 6L6 but actually never get 10W rms. 8W versus 130V/1. New Old Stock original box. Plate #1 vs. Another thought might be to go with SS diodes in place of the 5AR4 and install a damper tube where the 5AR4 was. (Direct filament vs. To view this site, you must enable JavaScript or upgrade to a JavaScript-capable browser. 5U4 drops more voltage than a 5AR4/GZ34, but less than a new production/Russian "5Y3" which drops less voltage than an old-production/American 5Y3, etc. 450 V for the 5AR4. KT88/6550 Compatible Single Ended Amplifier 5th Jan 2014 (using fladance mp player) 8W rms. 5U4? I need a better understanding of the differences between these two rectifier tubes - I know they both drop 50 volts, but the current issues have me confussed. A couple of types are left off. Quick couple of questions to you amp experts out there the recommendation I've read for the rectifier tube in a Bassman re-issue LTD is the 5U4 rather than the stock 5AR4. Most of the time they are interchangeable, but make sure to verify that with your particular amp!. 1 5AR4 Rectifier Tube, Single-Ended, Class A Operation. Drop-in Equivalents & Substitutes: 5U4. I always thought "sag" was a good way to describe this difference. An excellent replacement for any GZ34 tube. Zoom out and see the bigger picture, or focus in on an unprecedented level of granular data. RETMA is the acronym for the Radio Electronic Television Manufacturers Association formed in 1953, originally the RMA, later RTMA, then EIA (Electronic Industries Association, since 1997 Electronic Industries Alliance) – however the standard itself had already been in use for a long time before 1953; for example, the 6L6 was introduced in. The 5AR4/GZ34 makes about 20v more in my SFSR. Title: 5Y3G 5Y3GT Author: RCA Subject: FP-2011-07-30 Created Date: 7/30/2011 11:17:31 AM. GZ30, GZ32, GZ33, GZ37. But no way would I try a 5U4 in any amp not so designated specifically for it. All electrolytic capacitors will be marked, unfortunately they are not always marked the same. To prevent damage to equipment, it would be wise to double check with a good tube manual before actually doing a substitution. 5U4GA, 5U4GB, 5AS4, CV1575, 5U4G (large ST tube - electrically equivalent but won't fit in some circuits) 5R4. Back to top. Sovtek 5AR4s work nicely in amps such as the Mesa Rectifier series which use the 5U4. The 5V4 is an octal version of the four pin 83-V tube. 6% BAD WEAK GOOD NOS Minimum Good* = 54 Average New* = 150 * Hickok "Minimum Good" and "Average New" specifications for the 5AR4 GZ34 tube type Advantages that we offer at Vintage Amp and Radio Tubes: We buy in bulk and pass the savings on to you We leverage a network of tube buyers from across the country. Will I experience any problems by. To view this site, you must enable JavaScript or upgrade to a JavaScript-capable browser. The GZ34 Gallery 5AR4 : Many rectifier tubes have been made by the Philips company. This base reference gives a quick way to find which tube used the same pin connections. 5U4, 5R4, 5V4, 5AR4 & Solid State Rectifier Performance in Vacuum Tube Amplifiers 5AR4 & Solid State Rectifier Performance in Vacuum Tube Amplifiers maybe there will be some value to the. Canadian Vintage Radios’ regular features include: start to finish restoration projects, biographies of famous Canadian radio. For a 5AR4 I believe it's around 40uF, so there's a good chance the 5U4 isn't going to work if the amp was designed for a 5AR4. It is really nice with a strat and a silver bell. A BF PRinceton REverb or any other FEnder amp that was spec'd for a GZ34/5AR4 does not like to see a 5U4 in itand will not function properly. 5AR4 / GZ34 Tube Types are in stock and ready to ship! Javascript is disabled on your browser. Title: 12AU7A 12AU7 7AU7 Author: General Electric Subject: JA-FP-2000-12-26 Created Date: 12/26/2000 5:48:55 PM. (This is assuming about 140mA at idle from the B+ Plate supply. on 2002-12-22, 21:40:47 (64. Rectifier Tubes. Its a tad saggy at the moment, but I was wondering if I could safely use a 5AR4 in place of its stock 5Y3. 5U4 drops more voltage than a 5AR4/GZ34, but less than a new production/Russian "5Y3" which drops less voltage than an old-production/American 5Y3, etc. However the manual states" this tube (the 5AR4) may be replaced with the 5Y3 rectifier tube; but note, a difference in performance may be heard, the 5AR4 performs better than the 5Y3 when operating voltage is low". Home The Canadian Vintage Radio Society, and its bimonthly publication, Canadian Vintage Radios, is dedicated to the preservation, restoration, collection and enjoyment of antique radios and related items. Sovtek 5AR4s work nicely in amps such as the Mesa Rectifier series which use the 5U4. There is a slight difference in voltage, I think it's about 20 V, but it probably won't make a difference if you're using an amp with EL34s through KT88. 9 450 402 10 Yes 5V4-GA 175 1400 2 375 387 25 Yes 5V4-G 175 1400 2 375 386 26 Yes 5U4-GA 250 1550 3 450 379 33 No 5U4-GB 275 1550 3 450 377 35 No 5U4-G 225 1550 3 450 377 35 No CV378 / GZ37 250 1500 2. is the same baseout but also the same filiment current-is it the 5AR4 or 5R4? 5U4GB vs. +1 with sonar on the BF/GZX34 and AC568 and later SF/5U4 thing. All MWI M-type capacitors in signal path. Another application is for sweepable fixed bias to cathode bias. Sounded more hi-fi ish. The Tung Sol 5AR4 Rectifier tube is a solid workhorse rectifier tube. The Chinese 5Z4 series has a 2 amp filament draw, some of these other tubes are higher. Perhaps you mean Bendix 6106? Anyhow, I'm using a Bendix 6106 in the original CSP (not yet upgraded to a CSP2). Amazing feel and exceptional overall quality make this our factory. This is a great replacement for 5U4 socket tubes. Use it as a sub for the 5AR4 only where ratings permit. Limited Production due to the short supply of Hashimoto Trans, with a minimum of 2-3 months wait time. SYLVANIA 5U4G BLACK PLATE. Our website features secure payment options and fast, convenient shipping around the world. 6SJ7 pentode specified, NOT a triode. 71426 - Request a quotation. Here are the heater ratings (per tube) for common guitar output tubes: 6V6 -- 450mA 6L6 -- 900mA EL34 -- 1. 5AR4 / GZ34 / 5U4 / 5Y3 rectifier tubes - Darren Riley's Guitar & Amp Shop Fender parts , Gretsch parts , Gibson parts , Seymour Duncan pickups , Lindy Fralin pickups , TonePros. , 5AR4 vs 5u4G); in some case, changes were practically none. The difference between the two times is probably as a result of the direct vs indirect heating of the cathode. But it kind of depends - what can the amp handle /was designed for vs. There have been a myriad of tubes types and styles made over the years for industrial, military and commercial use. (I've got a Leslie cabinet that uses them. A tube rectifier will also give you a few less volts in the power supply. The PT will be straining due to the extra load on it since it's probably rated for 2 Amps. You will need to contact me for specific needs if you don't see them here. A couple of types are left off. Hey, I have a Gibson GA5 (1957 transition version), and I want to experiment with the rectifier tube. almost same 6. We've already talked about the 5AR4 vs. We also use these in Mesa Dual and Triple Rectifier amps in place of the stock 5U4's to get a little less sag but to maintain that rectifier sound. 18-watt and 20-watt amplifiers (lead, bass, and PA) models 1917, 1958, 1973, 1974, 2019, 2022, 2022T, 2061 V1 is the preamp. Share Thread. Hi Luis, Let's take a look at why a standby switch is included in most amps and see if your technician has given you some sound advice. There are many variants and equivalents for the 5U4, not all of them are drop-in substitutes though. 5AS4 / 5AS4A Full-Wave Rectifier (Higher Max DC output current and peak current per plate than 5AR4, but 5AS4 is directly heated, recommended as an upgrade for a 5U4GB) - Sun Audio SV300B-MKII - Meixing Ming Da mc-7r 2006 pre - Audio Note Mono amps. These include 5V4-G/GA, 5Y3-GT, 5AR4, 5U4-G/GA/GB, 5V3, 5AU4, 5R4, 5AS4, and 274B. 5U4G and 5AR4, same wiring, can be replaced without change anything, but one is direct heating and the other is in-direct heating, so the 5U4g will send out high voltage faster than 5AR4, if tubes in amp is all in-direct tubes, HV come in before they heat up is not a good thing, install a delay timer is add another contact also no good, the only can be done is to separate HV and LV supply. That’s not entirely true. Posted by Hujo (A) on May 27, 2009 at 17:24:07 I recently changed from GZ37s to GZ34s as the rectifiers in my Cary SLA-70B amp. 12″ speaker and V-Front 2×10″ cabinets available. Plate #1 vs. Common to medium powered amps like the earlier Fender Super Reverbs and Bandmasters. cathode sleeve). der Bugera BC-30 erlaubt statt der Verwendung einer GZ34 (5AR4) alternativ auch die Verwendung zweier 5U4 oder 5V4. This is a "representative" list of what is normally available. Tube World Express showcases the best sounding audio vacuum tubes that Tube World has to offer in an easy-to-navigate shopping cart format. 5U4G Mesh Data Sheet 5Z3 Mesh Data Sheet. , or say if I have 2 5U4's,if one is weaker than the other causing a bit more sag. com FREE DELIVERY possible on eligible purchases Replaces 5AR4 / GZ34 / 5Y3 / 5U4 $15. Use when less 'sag' is desired in the power supply; just switch back to the tube rectifier when 'sag' is desired. Since it’s a replica of a ’57 model, the power valves are 6L6s rather than 5881s (used from ’58 to ’60) and they get their juice from a 5AR4 rectifier valve. Sonically (depending on brand - Tungsol is best, KenRad, Raytheon also very good, RCA & Sylvania a bit less but still good) the best but sometimes had a reputation for not being reliable. You will also get a few more volts on the B+ due to lower internal resistance. Bottom line is that if you have a Fender, use a 5U4 or 5AR4, not a 5R4. Be sure to check with an amp tech before swapping different tubes. There are many variants and equivalents for the 5U4, not all of them are drop-in substitutes though. Petersburg. The YJR converts your amp's vacuum tube rectifier to a solid state rectifier, reducing tube sag for a tighter sound and feel. It will provide great performance and reliability in the tradition expected of Tung Sol tubes. 1 piece used metal based GZ34 is available. You can also swap between 5AR4, 5Y3 and 5U4 rectifiers to alter the voltages, and therefore the amp’s feel and breakup characteristics. Also, do the filaments of the tubes on that aftermarket board draw more current than two 7199s?. All MWI M-type capacitors in signal path. Beginning in late 1963 and continuing into mid-1964, Fender used up remaining old "Tweed style" Champ chassis and cabinets, but with Blackface cosmetics; Leo Fender was famously known as a skinflint when it came to minimizing production costs. 2 12AX7 Preamp Tubes. You've got some ears!The only difference in "tone" I can say I've ever noticed between rectifiers is more sag from a lower power rect. For example smaller amps commonly come with a 5Y3 Rectifier which is going to compress the sound the most and give you that vintage sustain at lower volumes. I know that 5u4 has this quality more than 5ar4 for example. One thing that confuses me, when you look at the BF vs. Heater or filament ratings. Tubes in the "Tube" column are directly replaceable with tubes in the "Replacement" column. com products. * If you're human like most, a JJ will be just fine. We know that the 5U4 drops more voltage than the GZ34, yet both schematics show 415 DC at the output tube plates. Another application is for sweepable fixed bias to cathode bias. 5U4 drops more voltage than a 5AR4/GZ34, but less than a new production/Russian "5Y3" which drops less voltage than an old-production/American 5Y3, etc. 12″ speaker and V-Front 2×10″ cabinets available. Use when less 'sag' is desired in the power supply; just switch back to the tube rectifier when 'sag' is desired. GE 5AR4 Datasheet. This rectifier insures a strong, dynamic response to your sound. 6sl7 : vt-229 ecc35 6n9p 5691 5755 6188 上面幾種編號的管子,基本上都可以直接互換沒問題. 2) 5AR4/GZ34. The only disadvantage to the 5AR4 is the lower voltage drop may be hard of filter caps in another way-the voltage may be too much for them. Putting a 5U4 into a GZ34 socket is not recommended because of the higher heater current requirement Putting a GZ34 into a 5U4 socket MAY be OK but you need to check if the lower current rating (160mA instead of 225mA) will be OK. The following list shows the tube types I have entered in my database, with exception of the service types (e. This is a very popular rectifier to use in place of 5U4, 5AR4, 5Y3, 5V4 and many others. You can use the audio out from an iPod, CD, DVD, MP3, Computer, TV, XM or SIRUS to the input connection. The thing that really surprised me is the behavior of the 5AR4/GZ34. The 12BH7 is a medium gain dual triode used in hi-fi amplifiers, pro audio equipment and some guitar amplifier circuits. Solid State Rectifier Direct plug-in replacement for 5AR4, 5U4 and 5Y3 rectifier tubes in amplifiers with center tapped secondary power transformer. -Swapping out your 5AR4/GZ34 with a 5R4 is a great way to lower the volume/sweet spot of more powerful amps like tweed Bassmans and Super Reverbs. Use it as a sub for the 5AR4 only where ratings permit. 54692 - Request a quotation.