12ax7 Tube Datasheet

12ax7 Tube Datasheet

| May 23, 2013 | 0 Comments

The 12ax7 is a miniature high-mu twin triode, each section of which has an individual cathode connection. It is especially suited for use in resistance-coupled voltage amplifiers, phase inverters, multivibrators, and numerous industrial-control circuits where high voltage gain is desired. A center-tapped heater permits operation of the tube from either a 6.3-volt or a 12.6-volt […]

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White Noise vs. Pink Noise

White Noise vs. Pink Noise

| February 28, 2012 | 0 Comments

We have some GuitarKitBuilder articles coming up that test gear using noise sources, both white noise and pink noise, so we’ve created this reference article in our Kits 101 area for the reader that wants more information on the meaning of these terms. White Noise Compared To Pink Noise The terms “white noise” and “pink […]

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From Our Mailbag: Where to Buy Guitar Amplifier Chassis Boxes

From Our Mailbag: Where to Buy Guitar Amplifier Chassis Boxes

| November 16, 2011 | 0 Comments

A GKB reader wrote to ask the following: “Hello, I have a question for you guys, I visit GKB often. Can you please tell me where I can find blank aluminum chassis like the one you used in the guitar amplifier chassis layout build? I’ve been searching for blank chassis for too long. Thanks! D […]

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The Repair Bench: Kasino Natural Bass Amp

The Repair Bench: Kasino Natural Bass Amp

| August 21, 2011 | 1 Comment

In this episode of The Repair Bench we are troubleshooting a Kasino Natural bass amp from the early 1970s. The Kasino brand was made by Kustom Electronics, maker of Kustom Amplifiers. If you’re not familiar with them, the Kustom amps brand was famous for covering their amplifiers in “tuck and roll” style upholstery (Photo 1), […]

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Book Review: Ampeg – The Story Behind the Sound

Book Review: Ampeg – The Story Behind the Sound

| July 31, 2011 | 1 Comment

“Ampeg – The Story Behind the Sound” was written by Gregg Hopkins & Bill Moore to provide the complete illustrated history of the company to celebrate its 50th anniversary. The book is 288 pages, with 32 in full color, and over 200 photos, and was voted the “Book of the Year” in 1999 by Vintage […]

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The Repair Bench: Build Your Own Clone 5 Knob Compressor

The Repair Bench: Build Your Own Clone 5 Knob Compressor

| May 26, 2011 | 1 Comment

In this episode of The Repair Bench we are troubleshooting a clone of the famous Ross Gray Compressor called the 5 Knob Compressor and sold by Build Your Own Clone (BYOC). We received this pedal from a customer who had purchased it, already built, on eBay. Apparently it had never worked for the original buyer/builder, […]

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Gear Review: Xytronic Soldering Iron Tip Cleaner

Gear Review: Xytronic Soldering Iron Tip Cleaner

| April 26, 2011 | 2 Comments

We recently picked up a handy item that works exactly as advertised – the Xytronic Model 460 Soldering Iron Tip Cleaner. For many years we have used a damp sponge for tip cleaning, just like many electronic builders. However this usually meant making a trip to a sink to moisten the sponge when getting ready […]

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The Repair Bench: Roland Cube 100 Bass Amp

The Repair Bench: Roland Cube 100 Bass Amp

| April 15, 2011 | 5 Comments

Learning how to troubleshoot electronic circuits is one of the handiest skills to have if you are building or modifying amplifiers or effect pedals. At some point you’ll power-up a circuit and find that it doesn’t work, and then what? For this reason we write “The Repair Bench” section of Guitar Kit Builder about our […]

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The Repair Bench: Ibanez TS9 Tube Screamer

The Repair Bench: Ibanez TS9 Tube Screamer

| March 29, 2011 | 22 Comments

Learning how to troubleshoot electronic circuits is one of the handiest skills anyone can have if they are building or modifying amplifiers or effect pedals. At some point you’ll power-up a circuit and find that it doesn’t work, and then what? For this reason we write “The Repair Bench” section of Guitar Kit Builder about […]

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The Repair Bench: Carvin SX200 Guitar Amplifier

The Repair Bench: Carvin SX200 Guitar Amplifier

| March 24, 2011 | 5 Comments

Learning how to troubleshoot electronic circuits is one of the handiest skills anyone can have if they are building or modifying amplifiers or effect pedals. At some point you’ll power-up a circuit and find that it doesn’t work, and then what? For this reason we write “The Repair Bench” section of Guitar Kit Builder about […]

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