Also, any thoughts on combining a pair of vintage Jensen c10r's which sound nothing like the modern ones i have heard with a pair of cts? Solid-state rectifiers do not wear out as tubes do, nor can they be replaced by the user. Third tube is the vibrato oscillator. For better or worse, this concept is common to this endeavor. But I have seen them used on Stackpole pots on electric National guitars as early as 1935. Second tube is the driver and tremolo modulator. Or is there some other possible cause you can point me to? I think 180 watts is a bit much for that speaker but it ain't dead yet. Clean and distorted tones come out very differently in different speakers.
One is a heavily cranked amp with a bright single coil guitar. Solid-state rectifiers do not wear out as tubes do, nor can they be replaced by the user. This is the phase inverter tube. Third tube is the driver and reverb recovery amplifier. The first letter translates to the year and the second to the month.
You may also use 5V4 types or 5R4 types if they fit physically. On the other side, speakers with low wattage can be better for clean tones due to better transparency and touch sensitivity, especially finger picking. It does need to have good quality heater insulation. Warm, very light, powerful, loud and very efficient. How the Source-Date Code Works. It must have good quality heater insulation.
Are the wires of the right era cloth insulation for older stuff? There are dozens of replacement speakers that can give your amp a more balanced tone. Normally it requires much more than the max power rating to blow a speaker, but there are other side effects in pushing a speaker against its limit. Sponsored Content is clearly labeled everywhere it appears, and Premier Guitar's editorial department has no involvement in its creation. In this case, the speaker is made by Rola 285 in the 9th week of 1957 709. Vintage amps, like everything else in the world are worth whatever someone is willing to pay for them. The prefix code letter identifies the type of magnet used in the speaker. I have a Super Twin in a Vibrasonic cabinet with one of those.
Be warned, this is an alt group so there are no rules. These modifications are making this research more difficult for a couple of reasons. The machine that stamped the serial number into the back of the chassis got stuck on number A23373 and a lot of pieces were stamped with this number. Circuit Code: In 1963 Fender stoped using model numbers to identify schematics and began using the model name and an assigned circuit number. Keep up the good work! Most often we use extension cabinets at big stages or at unmiked gigs to fill the room better without playing so terribly loud. The best way to date your vintage guitar or amp is from the manufacturers serial number and then use this guide as a reference to date the parts that make up said guitar or amp.
So how many of these chasses were made? Below are Vintage Guitar Codes to help you. The last two numbers are the year. Nicely balanced tone with good sparkle and just the right amount of bass and mids. So guitars and amps made as late as 1973 can still have 1967 date codes from this huge 1967 stocking. Not as original parts, anyway. Can anybody give me some insight about these speakers? Jensen was a very popular maker of guitar amplifier speakers during the 1950s and 1960s.
On popular Fender models, the pot date can be very close to the actual date of the instrument. The guide is an extention of this fascination with tube technology so I have chosen to ignore the models that do not make use of thermionic phenomena for amplification. Prior to the re-structuring of Jensen in '71-'72, Jensen quality had suffered terribly. Vintage Guitars Info - dating vintage guitars, amps by date source code Dating Vintage Guitars and Amps by Source-Date Code. Assuming the suffixes started with -01 and went to -3000, there would be around 3000 of these floating around. Third tube is the driver and vibrato oscillator.
A 40w Super Reverb will distribute 10w to each of the four speakers. This is the phase inverter and vibrato tube. It would have been very costly to destroy these units so two remedies were implemented. The last two numbers are the year. There are of course exceptions to our preference of American speakers. Stevie had this speaker in all his Vibroverbs.
Third tube is the reverb driver. Loud, full tone with both punch and sparkle, extremly clean, no cone breakup. It looks like I was the first guy to have a soldering iron in there. With this in mind, remember if the last two digits of the source-date code are greater than 52, you're not looking at the source-date code! Therefore it is a convenient way of refering to an amp of that particular era. Twin 6G8A; Showman 6G14A First tube is first channel preamp, 7025 is specified. I remember I had some old organ speakers, that I could pickup with 1 finger. Matched pairs are recommended to keep the amplifier balanced from side to side -- if you amp uses 4 or more output tubes, you can use groups of matched pairs, and you do not necessarily need to buy a matched quartet, sextet or octet.
If so, there are many good speaker blends to consider. Then from 1962 and later you see Fender using speakers from all the above mentioned makers. Second tube is second channel preamp, 7025 is specified. Some things are very obvious such as non-original or reconed speakers, non-original transformers, replaced pots, re-tweed, re-tolex, re-grill, etc. This model uses solid-state rectifiers rather than tube rectifiers.