Yearly Archives: 2016

JFET guitar/instrument buffer pedal

Update: Kits available in the shop here. Following on from our articles on the Unbalanced piezo preamp and Guitar leads, buffers and true bypass we present a project to build your own JFET buffer pedal. The circuit is essentially the same as in the unbalanced piezo preamp with a few tweaks and may be built… Read More »

Re-amper revisited

Update: reStomp re-ampers available for sale in the shop. Back in 2012, I wrote about re-amping and offered a design for a transformer-coupled interface between balanced-line output from a professional recording device and the unbalanced and lower-voltage input to a guitar amplifier. If you’re not familiar with re-amping, the idea is that you record (say)… Read More »

Theatrical power control – part 2

In the first part of this series, we introduced the idea of power control separate from the dimmer system and gave an overview of different ways we can manage switching of power to installed appliances. In this second part, we will look at remote-control schemas for independent contactors. One Big Relay So, the first option… Read More »

Theatrical power control – part 1

In my introduction to theatrical lighting systems I considered the many and varied lighting installations you might find in a performance venue and talked about independent power control which we will discuss further here. In days gone by, practically all of the performance luminaires in a theatrical installation would use filament lamps and be suitable… Read More »

Theatrical lighting – introduction

There are many different aspects of lighting in a public space – so many in fact that even seasoned technical crew can be confused. This article offers and introduction to the different lighting systems you might find in a performance environment. Consider a traditional small theatrical venue. The venue has public spaces and non-public spaces.… Read More »

Theatrical cue lights – part 4

Part 3 of this series introduced two professional cue light systems both using a three-wire system with an XLR grounded cable shield. One system is relay-based and the other microcontroller-based. Either system would be suitable for a professional installation. However, the two systems use different arrangements for the outstation. In fact there is no standard… Read More »

Theatrical cue lights – part 3

In part 1 we introduced cue light systems and discussed simple 2-wire a.c. systems. In part 2, we introduced d.c. switching and moved on to latching STANDBY. Later in part 2 we introduced a microcontroller-based design. In this part we will consider adding MASTER GO to relay systems and then expand on microcontroller-based designs. Note… Read More »