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Sub Sonic

What are your Lockdown Projects?

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6 hours ago, wen said:

bought speakers secondhand last year, just used scraps of timber in the garage, refurbished, up and running on sunday, incerdible midrange and detail

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Are they Wild Burro Betsy drivers?

 

SS

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yes they are the Wild Burro Betsy-K, not the most ideal for open baffle due to lower Qts, will be building enclosures once finances  able to buy wood

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You can increase Qts with a series resistor

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have never done any electronics, would not have a clue where to start, have done some reading but different to doing ie. what value resistor, where to put it?

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Jaycar have some excellent books and kits for beginners.  When you solder up your fist little kit and it works, you will be hooked. Cheers M.

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Posted (edited)

Thought I’d have another play with the track saw and home made jig, so I started on a couple of septagonal cabinets. They will probably end up with a small wide range driver.

 

The jig works an absolute treat, these cabinets (or this part of them anyway!) were cut and glued in less than an hour 🙂

 

SS

 

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Edited by Sub Sonic

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Repairing my Dynaco ST-70.  Power cap took a dump replacing with Triode Electronics power cap board.  Also need to start on my KT88SE project 

 

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On 26/03/2020 at 6:00 PM, andyr said:

 

Thanks for expanding my knowledge, B.  :thumb:

 

I had no idea there was such a thing as 3 phase, 115v 400Hz!  My house is supplied with 3 phase, 240v 50Hz - 3 phase is needed to drive the lift and the car stacker.  :)  (But I use 1 of the phases for my music system - so when the lift/car stacker ain't working ... it's dedicated to my music.  :) )

 

Andy

 

http://www.gohz.com/why-we-use-115v-400hz-power-supply-in-aircraft

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