Happy New Year everyone! 2009 is going to be a great year here at 300guitar.com. There will be more featured interviews with manufacturers and artists, more product reviews, more DIY articles, more, more, more! We have a lot planned and only 365 days in which to do it in. Please visit often for frequent updates. [...]

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 There is a new article on the Articles page “Marshall Amp Date Codes”. This article will help you determine the date of manufacture for Marshall amps. Click here to read the article.

Tags: Amp, Date Code, Marshall

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 There are easy ways to determine date of your Marshall amplifier’s manufacture by the serial number. The charts below will explain how to read the serial numbers and decode the model numbers.
July 1969-September 1992
First here is a chart with the model numbers and what they mean for this era.

A/ or /A
200 Watt

RI
Reissue Series

S/ or S/A
50 Watt

SB/ [...]

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 There is a new article on the Articles page on how to read the date codes on Jensen speakers. There is also a chart of the original specs for vintage Jensen speakers. Click here to read the article.

Tags: Amp, Date Code, Jensen, Speaker

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There is a new article on the Articles page. It is a chart with the date codes for Celestion speakers. If you have a Celestion speaker and want to know the date it was manufactured then this chart will show you how to read the codes. Click here to view the chart.

Tags: Amp, Celestion, Date [...]

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 There is an easy way to determine the date of your vintage Jensen speaker. On the edge of the speaker where the mounting holes are there will be a six digit number. The first three numbers will be 220 which denotes the manufacturer as Jensen. The next number is the year of manufacture and the [...]

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 Leave it to the tone-obsessed engineering staff at Ampeg to come up with the no-compromise, 20-watt, all-tube, point-to-point wired J-20 combo. Part of the Diamond Blue Lead Series, the J-20 Jet’s retro-styling is highly evocative of the ’60s in attitude, as well as tone.
J-20’s preamp section boasts not one, but three 12AX7 tubes, and its [...]

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Here is a tip for anyone who has a guitar amp or extension cabinet with a particle board baffle. Changing the baffle from partical board to a high quality plywood will give your cabinet a more open and natural sound. Some players describe particle board sounding and feeling dead as compared to plywood. This is [...]

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 The Pignose 7-100 guitar amplifier is the answer to the worldwide demand for a high quality, economical and completely portable amplifier. This version is the same as the classic design, except it is covered in Tweed for that hip yesteryear look! Limited quantities of this special collector’s edition amp! Credit: Pignose.

Tags: 7-100, Amp, Amplifier, Pignose

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 There is a new article on the Artilces page called “Chokes: What are they? What do they do”? In this article the small transformer looking choke is simply explained including what it does and how it affects the performance of a tube amp.

Tags: Amp, Amplifier, Choke, Tubes

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