All items tagged with DIY (29)

You Can DIY! Building a Guitar-Controlled Synthesizer: LFO and ADSR

October 12, 2022 by Ethan Winer

You Can DIY! Building a Guitar-Controlled Synthesizer: LFO and ADSR

This third article continues to follow Ethan Winer's fascinating journey of building modules for a Guitar-Controlled Synthesizer. The two previous articles described the core circuits he developed for this project that uses an electric guitar instead of a keyboard to control an analog synthesizer. This article continues with two components that are essential for all analog synthesizers: The Low Frequency Oscillator (LFO) and the Attack Decay Sustain Release (ADSR) envelope generator. Both of these circuits generate voltages that control other modules in the synthesizer. This article was originally published in audioXpress, June 2022

You Can DIY! Building a Guitar-Controlled Synthesizer - Frequency to Volts and Back

June 2, 2022 by Ethan Winer

You Can DIY! Building a Guitar-Controlled Synthesizer - Frequency to Volts and Back

This is the second article in a fascinating DIY journey of a guitar-controlled, all-analog synthesizer project that will include multiple stages and modules. Following a Sample & Hold circuit designed to retrieve previous voltages that no longer exist, this article details voltage control and how the playing is converted to voltages and back to frequency.

Xuron Introduces ESD-Safe Cutters and Pliers for Precision PCB Assembly and Repairs

January 14, 2022 by audioXpress Staff

Xuron Introduces ESD-Safe Cutters and Pliers for Precision PCB Assembly and Repairs

Xuron Corp. of Saco, Maine, introduced a full line of ergonomic cutters and pliers that are ideally suited for precise electronic applications such as reaching into densely populated printed circuit boards. Being the original inventor of the Micro-Shear blade by-pass cutting technology used on all its cutters, Xuron now expands its range of products for electronics professionals and enthusiasts with new electrostatic discharge-safe (ESD-safe) cutters and pliers.

You Can DIY! The DH-220C MOSFET Power Amplifier - Part 2 Construction and Testing Instructions

December 15, 2021 by Bob Cordell and Rick Savas

You Can DIY! The DH-220C MOSFET Power Amplifier - Part 2 Construction and Testing Instructions

This reference DIY project details of an upgrade construction for the legendary Hafler DH-220 lateral MOSFET power amplifier, which can also be used to upgrade other Hafler models or even inspire new designs. The design is implemented on two PCBs, one as a drop-in replacement for the original Hafler circuit board and another board that consolidates all of the output stage wiring and components within the heatsink and under the main PCB. After the authors detailed the design and performance of the DH-220C upgrade amplifier, in this second part of the article, Bob Cordell and Rick Savas discuss the construction and testing. This article was originally published in audioXpress, August 2021.

You Can DIY! The DH-220C MOSFET Power Amplifier - Part 1 The Circuit

December 8, 2021 by Bob Cordell and Rick Savas

You Can DIY! The DH-220C MOSFET Power Amplifier - Part 1 The Circuit

This article offers the first serving of an amazing DIY project from amplifier experts Bob Cordell and Rick Savas with an upgrade for the legendary Hafler DH-220 lateral MOSFET power amplifier. The design is implemented on two PCBs, one as a drop-in replacement for the original Hafler circuit board and the other as a new board that consolidates all of the output stage wiring and components within the heatsink and under the main PCB. This article was originally published in audioXpress, July 2021

Xuron WickGun Desoldering Braid Dispenser Features Replaceable & Interchangeable Cassettes

September 24, 2021 by audioXpress Staff

Xuron WickGun Desoldering Braid Dispenser Features Replaceable & Interchangeable Cassettes

A handy hand-held dispenser that lets users dispense, position, and cut-off desoldering braid using one hand and eliminates finger burns and waste has been introduced by Xuron Corp. of Saco, Maine. The Xuron WickGun desoldering braid dispenser is a gun-shaped tool that is designed to be held in one hand to safely dispense, position, and cut-off braid without finger burns.

Sennheiser Introduces Evolution Wireless Digital Microphone Systems for Corporate and Education Spaces

June 1, 2021 by audioXpress Staff

Sennheiser Introduces Evolution Wireless Digital Microphone Systems for Corporate and Education Spaces

Sennheiser designed the new Evolution Wireless Digital, offering a professional wireless microphone system that is easier to use, based on an easy, app-based process, while retaining all the multi-channel capability and reliability that users have come to expect of UHF and 1G8 microphones. The different systems are ideal for corporations and schools were users have to setup audio for themselves.

New 19-Inch Rackmount Surface Mount Back Boxes from Redco Audio

July 15, 2020 by audioXpress Staff

New 19-Inch Rackmount Surface Mount Back Boxes from Redco Audio

Redco Audio, the Connecticut specialist in audio and video cables, connectors, panels and accessories, continues to expand its wide variety of professional solutions, now introducing new 19-inch-long Back Boxes in 1U, 2U, and 3U sizes. Designed to work with any rackmountable panels, these new boxes are the perfect solution for easy surface mounting. The boxes 4" depth allows for plenty of room behind the panel, including for cable clearance.

New Speakerbench Online Tool for Assisting in Speaker Design Calculations

June 19, 2020 by audioXpress Staff

New Speakerbench Online Tool for Assisting in Speaker Design Calculations

Speakerbench is a web-based application created by Jeff Candy (San Diego, CA) and Claus Futtrup (SEAS, Norway), combining several special-purpose modules aimed at low-frequency analysis and design of loudspeakers. According to the authors, the online tool is made available to whoever might find it useful, including the loudspeaker DIY community. The authors encourage user feedback and even invite software developers to implement the techniques.

2019 Midwest Audiofest Speaker Design Competition

November 21, 2019 by Thomas Perazella

2019 Midwest Audiofest Speaker Design Competition

One of the most important audio events for the speaker building and DIY audio communities, the Midwest Audiofest (MWAF) is held in Springboro, OH, in July every year. Sponsored by an impressive group of vendors and hosted by Parts Express, this event combines several activities including a huge tent sale at Parts Express. For Thomas Perazella the highlight of the event is the Speaker Design Competition, for which he was again one of the competition judges. This article was originally published in audioXpress, October 2019.

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