Dating a Marshall

Featured Articles Kit Review: It was only a few days later that Guitar Kit Builder was asked to try out the brand new Trill Tremolo, so this worked out perfectly for me. In my guitar playing […] Continue Reading Kit Review: Many players reach a point at which they want to have a deeper relationship with their instrument — some way to understand the guitar better and to make it fulfill their needs as a player. One of the ways in which a player can […] Continue Reading Kit Review: The kit uses a 12AX7 preamplifier tube, and a single EL84 output tube with solid state diodes for power rectification. The amplifier is rated to deliver 5 watts into an 8-ohm load. Amplified Parts is a relatively new entity that is part of Antique Electronic Supply, which has been operating for more than 25 years. The focus of Amplified Parts is on the musician who is not an electronic technician and who […] Continue Reading Basic Turret Board Construction This tutorial will show you how to create your own turret board, to be used in building a guitar amplifier.

Dating Marshall amps by serial number

Previously Rzeznik had been in a band with Takac’s cousin, called The Beaumonts. In the early days of The Goo Goo Dolls , the band performed at gigs relentlessly, with Takac as the frontman Rzeznik gradually becoming the frontman over the next few albums, as each new album contained more songs sung by Rzeznik than the last. They were soon picked up by a small record label, Celluloid.

However, patience will be rewarded and it is fun to use a battery-operated receiver to monitor one of the many AM ham nets on 80 meters, especially when running the audio to a vintage horn speaker – talk about “broadcast quality audio” – well, style anyway!

Please don’t ask if we know any other speakers than mentioned on this page. When you know the best, you’re not interested in the rest. No, we don’t know if your Speakers match your Amp, but we can tell you how to tell if they are below. The more amps we try on our Tannoy Golds, the wider our opinion can be. The fact is there really is no way to tell beyond actually trying the Amp with the Speaker. We’ve not got bigger speakers of the post design, if we use some small ones to test, they hardly give a full picture of the sound.

Buying a Speaker is the most hard of all hifi items to buy due to the huge tonal differences and how they interact with the room you use as well as the amplifier. Phase errors will create a poor sound as well as the minute volume differences. The Human Ear cannot supposedly hear these differences, yet some state we need Amplifiers delivering “sound” beyond 20 kHz to have music sounding right.

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Features one channel and two inputs; volume, bright, treble, treble expander, bass, bass expander, bright switch, deep switch, stand-by switch, pilot light for stand-by and operate. This amp was built to play larger halls and outdoor concerts. The lack of reverb was not a big issue as most live performances had acoustics full of reverberation halls, arenas.

Peter Traynor built these things to stand up to road abuse, unlike a lot of vintage stuff. It sounds great with either bass and guitar, providing a clean and loud tone.

Hiking, boating, walking, it will work and it sounds really good.

History[ edit ] The 5B6 Bassman[ edit ] During , the Fender 5B6 Bassman amplifier was introduced as a combo amplifier cabinet that included the amplifier chassis combined with one 15″ speaker. It was designed to generate 26 watts at an 8 ohm impedance load, and offered a cathode-based bias. In the cabinet designs were changed to the so-called “Wide Panel” design, with a 5 inch wide tweed covered panel above and below a wider swath of grill cloth. Fender ceased production of 5B6 Bassman amplifiers during the spring of The 5D6 was a major departure from the earlier 5B6 Fender Bassman model.

The circuit had two innovations:

The J.P. Seeburg Piano Company Registry

I learned my craft with curiosity, trial and error in times before the Internet when much of this information was held secret by the experts. I have many years of experience in these fields, and use these Web pages to share my knowledge freely. This site is offered in the hope that readers will better understand electric guitar technology, leading to creative use of your musical tools.

I never modded it because it was perfect for my needs as is.

Remember, this is just a basic primer. On the outside, the meter looks like a typical old-fashioned analog meter. Below are a few examples from my VTVM collection. Your VTVM may look slightly different on the outside, but internally they are almost all identical. The heart of every VTVM is the balanced bridge circuit. This circuit was patented in ! The concept is crudely represented below.

Basic input circuit is common to most VTVM schematics. You should note that the input resistance is constant though out the range switch. That is, the input resistance is 10Meg, whether the range switch is operated on the 1-volt position or the volt position. Accordingly, the ohms-per-volt sensitivity changes with the range selected.

Used and Vintage Guitars

Dating to around , it’s from a classic era for Fender tube amps. The aluminum drip-edge front panel was only offered for a short time on several Fender amp models making these a bit more prized. Just serviced by our tube amp technician, it’s ready to rock. The two original Oxford ‘Fender Special Design’ 10 inch speakers sound fantastic and can handle pedals easily. The genuine spring reverb is lush and the vibrato shakes like it should.

The movement is house strike and in good working order.

Mechanical Details and Variations Piano Actions Pre Seeburg pianos typically have no stop rail to limit the travel of the stack pneumatics, neither on the stack nor on the piano action. Post pianos have a stop rail on the piano action, allowing the pneumatics to have a little extra span and providing for manual adjustment of the stop position of each pneumatic.

Pneumatic Stacks Seeburg numbered its pneumatic stacks with steel die stamps, starting in and ending sometime in In the first series, known numbers run from through Probably after , a new numbering series was begun, usually stamped in smaller numbers, with known numbers from through , then a large gap, and then one much higher number, The new numbering series does not necessarily begin with the late style two-tier stack design, but more information is needed to pinpoint the change.

Seeburg made five types of pneumatic stacks: Single valves, no adjustable bleeds. All valves are installed in one vertical valve box on the front, with removable inside wooden seats, each seat holding four valves, except the last one, which has fewer. Each valve is mounted on a small wooden lever that is guided by a tiny steel pin. The secondary pouches are all located in the removable front board common, used circa The pushrods are wires with wooden buttons on top, but the bottom ends are bent like an inverted question mark to go through bushed wooden fingers on the pneumatics.

Marshall Amps

Eastman and the family of companies that evolved from the Harvard Clock Company. In an expanding effort to help collectors desiring to obtain exceptional marine clocks, Chelsea Clock Museum will display clocks for sale on this page. Clocks shown here are clocks selected for quality and rarity. Additional details and pricing information may be obtained by contacting the Curator of the Chelsea Clock Museum.

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I don’t think switching to s will make the transformers any hotter.

MCM vs SiP vs. Computer and communication companies have driven this trend for decades through finer lithography, better materials, and larger chips and wafers, all leading to higher clock frequency. Cost was not a factor. But the world has changed, and the primary focus today is more functionality at an affordable cost. Even personal computer companies have moved on to dual- and multi-core processors that perform multiple functions on a single chip — spreadsheet on one quarter of the screen, photograph editing on another, watching a movie on the third, and video-conferencing on the fourth.

The key challenges to SoC progress, however, are formidable, and include design and design verification, manufacturability, intellectual property IP and legal issues, time-to-market, and cost. To overcome these problems, system companies pursued a different approach to SoC, dating back to the s. Instead of integrating all or most of the system needs on large and complex single chips, they fabricated smaller, high-yielding chips and reconstituted them to behave like large chips as multi-chip modules MCMs.

MCMs saved the computing era back then, even though they were capital-intensive and technology-complex.

The Best of Sansui

Page 1 2 “How old is my Marshall? While the age of an amp has no bearing on how good or bad it sounds, it can have an impact on the selling or purchase price of a Marshall rig. Using the information in this section, you can attempt to dial in the possible dates of manufacture more closely than by sheer estimation alone. Does it have a bar code?

The Model still seems to be a tube tester that is solidly built, and gives reliable readings.

Steel frame designed to mount a swinging ball upon. A-stands made by previous founders were usually constructed of cast iron; all Verdin A-stands are fabricated of structural steel. A device of electronic components with or without vacuum tubes used to increase power, voltage, or current of a signal. A bell rung morning, noon and night as a call to recite the Angelus Prayer to commemorate the Annunciation as follows: The rounded part of the clapper containing the largest concentration of mass which strikes the bell at the sound bow level.

Balls are usually made spherical or pear shaped. Some American chimes have bullet shaped clapper balls.

Inside Marshall Amplification – With Rob Chapman