Z VEX tonepad -- a resource for d.i.y. music projects ProSoundWeb Forums The Welcome to the New PSW Forums! The New PSW Forums are now active. If you were a member of our previous forums, you will need to create a new username and password to access the new forums.Forums are moderated and users are required to register prior to posting. LAB Forums Forums include the LAB (Classic Live Audio Board), as well as LAB Lounge, Church Sound, Road Test, Installed Sound, Pro AV, and more. R/E/P Forums A wide range of forums devoted to the art and science of recorded audio, focusing on techniques, equipment selection and application, as well as topics such as mastering and production. Church Sound Forums A community of information exchange for church sound practitioners and operators, also focusing on other important aspects of technical production as it relates to house of worship applications. Lighting Forums A community of lighting and audio professionals dedicated to expand their lighting knowledge base.
Tube Amp Schematics / Projects What is a Hoffman board? Hoffman boards are classic amp circuits that have been re-designed using my own turret lug layouts. I didn't invent the circuits, I just came up with a slick way to organize the circuits on super neat turret lug boards. What is a Hoffman board? Note: I don't sell complete Hoffman boards. Hoffman board manufacturers Hoffman Board manufacturing instructions Hoffman board installation Instructions Choosing a chassis for a Hoffman board Scratch building an amp Sound clips of some of the amps below Note: The layout diagrams in this section below are my own designs. I now offer the bare Hoffman style boards as pre-drilled boards with un-finished edges that need sanding. I created some new layout diagrams for the pre-drilled boards I sell. The old layouts are labeled - Layout diagram #1 The new layouts are labeled - Layout diagram #2 New stuff to read here Check out my new Parts List page. Hoffman Princeton Reverb - layout diagram Hoffman Princeton Reverb parts listing
Flexible shaft Flexible shafts are commonly used in plumber's snakes. They are popular accessories for handheld rotary tools, and integral parts of rotary tools with a remote motor, which are called "flexible shaft tools". They are used to transmit power to some sheep shears. They are also sold to connect panel knobs to remote potentiometers or other variable electronic components.
Acoustics Principles For those looking to gain a deeper understanding of how audio works, whether to make better-informed decisions or simply for the sake of curiosity, it's useful to lay down some ground rules that govern how audio systems behave relating to loudness and the decibel. One of the most important concepts in audio is the decibel, the unit of measure denoting the ratio of a change in level, whether that level is acoustic Sound Pressure Level (SPL) or electrical signal level. It’s abbreviated dB. If you are a Home Theater Specialist I urge you to take HAA Level II training. Room modes cause standing waves that can cause three acoustical problems: a level boost at some frequencies, an extent of the duration of sound at those same frequencies (resonance) and some profound dips at other frequencies. Bass traps control low frequency issues in rooms. Unfortunately, where sound quality is concerned, the acoustics of the listening room is rarely taken into account. Let’s get right to it.
The Pedalboard Planner Blog » Pedal Order Pedal Order for tips on using muti-effects with other pedals see this post. Let me start by saying that this is simply a jumping off point. If you want your sound to be your own, mix it up, see what happens and then try again. This basic layout seems to make sense (if you read various posts around the net) but if you try putting your delay before your compressor and you like it, then DO IT! Sometimes to not be a conformist you need to study how a lot of people do it, then make a change and see if it works. I know lots of guitarists who don’t want to spend their effects dollars on a tuner, and while I can appreciate the desire to only get pedals that change your sound, if you are not in tune, no one wants to hear you! Pedals in this category include pedals like your standard crybaby, Z.Vex wah probe, big bad wah, etc. GuitarWahOctaveFuzzAmp GuitarOctaveWahFuzzAmp GuitarOctaveFuzzWahAmp Compressors come next. It a matter of what you are looking for out of your sound. Volume Pedal Compression
Contact Lens? Or...Mouse?? This one’s kinda hard to swallow so take a deep breath, open your minds, and pretend it’s 2100. I CONTACT is essentially a mouse fitted to your eyeball. The lens is inserted like any other normal contact lens except it’s laced with sensors to track eye movement, relaying that position to a receiver connected to your computer. The idea was originally created for people with disabilities but anyone could use it. Designers: Eun-Gyeong Gwon & Eun-Jae Lee ..:: How to make your own True Bypass Strip ::.. taken from www.singlecoil.com What´s the deal with true-bypass ? If you need it or not depends on your gear and is also a matter of individual taste. It can help you to get rid of all the tone-sucking within a fx-chain, but it can also cause new problems (read more about this later). To teach yourself about the true-bypass subject, read the fantastic article from Andreas Möller by clicking here Is there a special wiring scheme you use ? Some more technical specs available ? How do I orientate the 3PDT switch correctly ? How do I cascade the loops ? Can I also use DPDT switches ? What are all this terms like send and return ? In a single true bypass loop you have a total of 4 jacks. What about the measurements of your strip ? The overall measurements of my 9-loop strip are 62 x 7 cm with a height of 6 cm. I don´t need a big TB strip, how can I make a single-loop TB box ? I want to add a master-bypass switch, how can I do this ? I also want a tuner out with muting option, how can I do this ? No don´t do this ! YES, we can !!!
New Biosensor Finds Bacteria In Seconds A new project from Spain has created a means of detecting water borne bacteria in seconds. Drinking the water in a foreign country always seems like something of a gamble. Could be clean, could be a one way trip to spending the entirety of your vacation in the bathroom. Bacterial infections may be an inconvenience to tourists, but they are down right deadly to third world citizens. The biosensor works like a microscopic bacteria trip wire. It’s remarkable that the Salmonella biosensor can find a single bacterium in 5mL of water. The next big step for the Spanish biosensor is to find or adapt more aptamers so that other pathogens can be detected in the same manner.
A Remote Indicating Effects Bypass System Several people have asked for a remote effects switching system simpler than the Programmable FX Switcher. All they want is to just be able to bypass effects individually on a one-by-one basis. While the Programmable FX Switcher can do this, it's needless complicated for the task. There ought to be a simpler way, and there is. Let's just build this one up as we go. The switch shown inside the dotted box is a double pole double throw (DPDT) stomp switch wired up to connect the guitar jack to the amp jack when thrown one direction, and guitar to FXinput, amp to FX output when thrown the other direction. What we want to do is to make the switch flip remotely, not by stomping on the actuator on the actual switching element. To do this, we exchange the stomp switch for a DPDT relay. Relays have two sets of ratings - the coil and the contacts. The coil rating tells us how much voltage and current the relay needs to operate. The wiring on the FX input and FX output jacks is worth noting.
Understanding Compressors and Compression Jan 1, 1999 12:00 PM, Barry Rudolph Compression is one of the most common processes in all audio work, yet the compressor is one of the least understood and most misused processors. Compressed audio is an everyday fact of modern life, with the sound of records, telephones, TV, radios and public address systems all undergoing some type of mandatory dynamic range modification. The use of compressors can make pop recordings or live sound mixes sound musically better by controlling maximum levels and maintaining higher average loudness. It is the intent of this article to explain compressors and the process of compression so that you can use this powerful process in a more creative and deliberate way. Compressors and limiters are specialized amplifiers used to reduce dynamic range-the span between the softest and loudest sounds. THE BASICS There are four basic parameters on all compressors: compression ratio, threshold level, attack time and release time. Acceptable Use Policy MixLine