Parts for Vintage Equipment

Where to get vintage gear spares?

Over the last 6 months I have received quite a few mails from desperate individuals wishing to restore their old radios, tube and semiconductor, integrated amplifiers, turntables and tape decks.

Honest Sam's Top Notch Sales - Cars in Unbelievable Condition
Honest Sam’s Top Notch Sales – Cars in Unbelievable Condition

Belts and power supplies and many semiconductors have equivalents but we get stuck with Germanium, decals, knobs and switches with most gear and then the mechanical parts to decks and turntables. In South Africa we have to turn to eBay where often shipping charges become exorbitant. Continue reading “Parts for Vintage Equipment”

Ampacity and Current Handling of Conductors

Live shows, domestic and industrial power – it’s all about Ampacity

Report: 2013:- South Africa has approximately 60 000–80 000 unnatural deaths per year, with an average of approximately 70 000 per year. There are currently 36 registered forensic pathologists in South Africa. An electrocution death is considered an unnatural death and is, therefore, referred for autopsy
examination in South Africa. Continue reading “Ampacity and Current Handling of Conductors”

What’s in a Vocoder – voice synthesisers and Robots

Kraftwerk, Styx and My Vocoder – Shaping human voices

Generating and shaping audio and RF wave patterns has long been an interest for many and is seen in the medical, military and commercial industries.

Not wanting to re-invent the wheel but rather looking at another spin, what is the appeal?

Although there are many makes and models, dedicated or otherwise two entry level but well rated models are the Roland VT-3 and the Paia Vocoder designed by Craig Anderton. Check out an upcoming series as we attempt to build our own.

An off-tuned SSB received signal through the BFO will create vocals which sound like monkey chatter or off pitch. It doesn’t take radio students long to see the multiple effects ring modulators and different tones have on the output.

Circuits and Kits

Instructables – Build and Analog Vocoder by Planetone

MFOS – Music from Outer Space / Article / Makezine

Ghetto Talk Box

Muffwiggler / Elektor 10 channel vocoder

And of course….

Crank That Soulja Boy Talk Box (from Ghetto Talk Box)

Audio Tools

Two of my favourite audio tools would be Audacity (free) -multitrack recording which allows effects and of course, Reaper, a fully equipped DAW.  Free for 60 days then although not crippled, $60.00. You will not find this kind of software anywhere for this price.

Both the above allows vocoder inserts and with proper manipulation are exceptionally good.

 

Further Reading

How Vocoders work – Craig Anderton (Paia)

Patch Bays or Mixers

Patch Bays and Mixers, sometimes the obvious isn’t so obvious.

There are lots of posts on the forums where users are either attempting to build their own patch bay or trying to switch a mic signal through a patch bay. The general feel is never to switch phantom power through a patch bay.

Allen and Heath Xone DB4
Allen and Heath Xone DB4

A studio mixer with sliders all facing the horizontal axis is often one of the best solutions as long as the mixer as enough line outs to feed a patch bay. What happens if you have a rack mounted console with combo receptacles (XLR/TRS) at the rear of the unit?   Continue reading “Patch Bays or Mixers”