Most guitarists are fairly fanatical about the tube amp. Many of these designs have been refined and re-packaged by now in a bewildering number of often complex formats; but the heart of a tube amp and the circuits on which it is based have actually changed very little. An open tube amp may have the potential to kill you even when switched off; and even if you have the knowledge, the best tube amps are far too exquisitely engineered under the hood to be messed about with by just anybody. As with most things though, there is a lot that can be achieved with just a basic level of knowledge—and if nothing else you might save yourself a trip to the amp tech! They are often—but not always—hidden behind metal sheaths that are there primarily to reduce microphonics. Most modern amps are designed around 12AX7 preamp tubes, which have a very high gain factor, and generally the brands that tend to be fitted at the factory common ones include JJ, Ruby, Sovtek and Shuguang are robust and will perform well. Preamp tubes—in terms of reliability—can be thought of a bit like lightbulbs. Most will work well for several years, but occasionally one will fail prematurely for no apparent reason. Tubes can be very consistent but arguably are not made as well as they were in their heyday around 50 years ago—and even with the best production techniques in the world, they are simply being asked to do a lot of work.

Celestion K15T-200 Guitar Speakers . 15″ 200watt . 8ohm.+ Tweeters. included

Dating jmp marshall amps Aug Much lore surrounds these early KT66 power house amps and rightfully so Please inquire if you have any specific questions but circuit pics to follow All speakers function as they should and are considered last of the original Pulsonic cones before the ‘RIC’ cones became standard issue. Video chat for horny teens They yearned for more volume, more distortion, and the right sound. Someone along the way seems to have redone the harness but using its original wire.

The AC30C2 and the AC30C2X amps make use of 3 x 12AX7 preamp tubes and use 4 x EL84 tubes to deliver 30 watts of power. The AC30C2 uses two 12″ Celestion G12M Greenback speakers. The AC30C2X uses two 12″ Celestion Alnico Blues.

Milford, New Jersey, Ships to: I can provide the number from them if you need them for dating purposes. Manufactured in England , Sounds incredible, and insanely loud. Fuses replaced with correct values and connections cleaned. If you have any concerns about the originality of the components please ask! I will do my best to get you an answer or the date codes necessary. Please see pictures and ask questions prior to purchase, I can provide more pictures if needed.

Hit the 12 picture limit here. Real vintage Marshall tone. This is a vintage amplifier and no warranty or guarantee of longevity is implied by this listing.

Carlos Santana

If you’re not familiar with my site, it’s simple, and you’ll love it or hate it: It’s not a fancy site but it remains unchanged since ’98 and I firmly believe, “if it ain’t broke – don’t fix it. Just click on any underlined text and it should open a picture; if you move your cursor over the pic and there’s a magnifying glass displayed instead of your cursor, click the pic and it will expand it to larger size.

cab loaded with a pair of vintage-style Celestion G12M speakers, Channels 1 (on & off reversed, or different from manual) 3) The digital reverb sounds a bit wonky for my Fender ’65 Deluxe Reverb 1×12″ Watt Wine Red LTD Tube Combo. Fender acoustasonic service manual · Fender. Dating fender acoustasonic junior dsp amp by serial number · Fender.

Instead of using two voltage doubler bridge rectifiers, Marshall used one voltage doubler bridge rectifier like the later amps have. So instead of feeding two rectifiers with 95VAC each, Marshall now feed one rectifier with ca. This was initially done by bridging two secondaries of the power transformer however, later transformers have only one V secondary with centre tap. A factory schematic indicates that Marshall also lowered the plate voltage to VDC, something that increases tube life, reduces power while giving more compression and distortion Doyle, History of Marshall, p.

Power transformers went from the Drake to the Dagnall T laydown power transformer. The new power transformer was similar to the Drake delivering VAC but had a thinner 1. Both the Drakes and the Dagnalls sag significantly under load. Typically, the plate voltages drop V at full distortion. The factory schematic shows four 32uf v mains filter caps like the earlier amps had. However, this configuration is rarely seen on EL34 amps. These changes to the power supply reduced the number of parts, and probably also reduced costs and ghosting.

The screens filtering was typically 16uf two 32uf caps in series , but some late amps have 50uf two uf caps in series. However, the phase inverter filter cap is no longer place on the power board inside the chassis, but put on top of the chassis, near the power transformer like the later plexis had the hole in the chassis was unused on 5B-C. On the last of these amps the preamp voltages were reduced by increasing the voltage drop resistor between the screens and the phase inverter from 8.

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My first guitar was a Univox Hi Tone pot date codes indicate a year ending with a 0 and serial number on the neck Can someone identify this univox??? I had a Westbury back in the 80s and it was nothing like this guitar Number of bids and bid amounts may be slightly out of date. Dating the guitar through the neckplate?

There have already been a few bang-on reviews of The Duchess and most detail the experience through the matching compact 1×12 loaded with a Celestion G12M Creamback. While I love (and own) the compact 1×12, I had just ordered myself a closed back 4×12 custom loaded with the same Creambacks.

Step 2 — Decipher The Date Code All Celestion date codes contain a pair of letters representing the month and year the speaker was made. In most cases the first letter represents the month, and the second letter represents the year. To date your speaker, simply find the pair of letters in your date code and use the chart at the top of the page to decipher them. Use the stamp location colour codes to guide you.

Be careful of date stamps printed in reverse year then month. A number directly next to the pair of letters, if present, is the day of the month. More example date stamps are shown further down the page. What About The Stamp Format? You might have read on older websites to use the stamp format to date your speakers. Although the stamp formats can be useful for verification, I do not recommend using them as the main basis for dating your speakers.

The truth is, a lot of date stamps do not correspond with those formats and this confuses a lot of people. Both of these speakers were made Nov However, for dating purposes — they are only usually present on speakers made between to

All user reviews for the Marshall 5210 [1981-1991]

Male Carlos Santana born July 20, is a Mexican and American musician who first became famous in the late s and early s with his band, Santana , which pioneered a fusion of rock and Latin American music. The band’s sound featured his melodic, blues-based guitar lines set against Latin and African rhythms featuring percussion instruments such as timbales and congas not generally heard in rock music.

Santana continued to work in these forms over the following decades.

Celestion G12M 16 ohm guitar speakers in good condition $40 ea. + shipping. univox | This is an awesome page about univox at !.

Gear Shares Manufactured from to , the model is the model number, not the year it was made was an watt 1×12 combo with tremolo. It just may be the holy grail of low-wattage Marshall combos, providing classic Marshall attitude and aggressive growl, but at lower volume, of course. Fortunately, Marshall paid attention to the buzz and have added the X model to its acclaimed line of handwired reissue amps. Features The X is a faithful reproduction of the original The amp has two channels, each of which has two inputs, a tone control and a volume control.

One channel includes a tremolo circuit with corresponding speed and intensity controls. The X is constructed with Dagnall output and mains transformers tweaked to the same specs as the original transformers, a point-to-point-wired tagboard circuit, a gold silk-screened Plexiglas control panel and an aluminum chassis, just like the Sixties version.

Guitars user reviews

Celestion speakers dating It features a 1. From Dec to Sept the day of the month was omitted. To determine when your speaker was made, simply look for a pair of letters within the code and use the chart below to celestion speakers dating them. See questions and answers. Pre-rola Explained – Part 2.

The rear-ported Celestion G12M Greenback speaker also harks back to the sound of ‘s Marshall amps offering an overall vintage tone ideal for the likes of 80s and 90s style rock lovers.

I have tested and played both guitars, and can not say that I was able to detect a difference. More about the Roland G Maple top mahogany back Finish: Acrylic “robert” brown or white Neck: Set-in 3-piece maple Fingerboard: If there is one guitar that has become the “gold standard” of guitar synthesizers, it has to be the Roland G guitar. The cards are labeled as version “A. You can also see jumper wires soldered across the board.

The first time I tried to repair a failed op-amp in a G , I realized that the pin-out documentation was wrong on the schematic. These op-amps are the top three op-amps in line with the pin ribbon connector. The line-level amplifiers are surrounded by resistors for a simple gain circuit, and the hex fuzz amplifiers have the network of diodes used to create the fuzz sound. In terms of sophistication of design and electronics, the weighty Ibanez IMG comes out way ahead of the G , but like the Roland G , the IMG is a bit of an acquired taste, and its curious body design means that the Ibanez IMG is virtually impossible to play sitting down without a guitar strap!

G12M vs G12H – Celestion Greenback comparison

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