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This is somewhat of a philisophical topic, but something I have been wondering about for a while: When exactly does something stop being DIY? Let's say I build a set of bookshelf speakers: 1. I build it from MDF and paint it with a roller using enamel. It looks and sounds kind of shite, but...

Hi Guys, I am fine tuning my circuit design for DC input protection on my big amplifier build.  The amplifier is fully DC coupled (obviously), so I reckon I will be clever and monitor for DC on the input, and if an excessive amount of DC is present, I will have the circuitry automatically...

Some of you may know that I like to build something a little different each time - what's the point of doing the same 2 way over and over again using different drivers?  Square box, little bigger, little smaller, drivers this configuration or that, port tuning higher or lower - it's boring. ...

I have been busy working on something to supersede the SM-150 power amplifier for a number of months now, and things get interesting quickly. The basic topology will remain symmetric complementary differential (same as the SM-150), but implemented a bit differently and optimized in other ways. ...

Hi Gents, This project has been commissioned by a customer of mine and he has agreed that the photos be shared. I need to make a chassis for a PALADIN SM-150 stereo amplifier, and this here will document the machining of the heatsinks. I need 2x heatsinks sized around 410mm wide x 150mm tall...

I have been very happy with my large and imposing HE speakers for many years now.  So happy in fact that they are still raw wood  :giggle: Anyway, as these things sometimes work out they have been provisionally sold which now leaves me with the need to build myself something new. The question...

Mostly out of curiosity I have been messing with designing and analyzing discrete diamond buffers the past couple of days, trying to gain some insight into the inner workings of the circuit. I have tried every design I can think of from the most simplistic through to fairly complex, including...

Hi Guys, My SB touch is fried (lightning), so I want to try make my own one using a PI.  Now I know nearly nothing about this topic so please be patient with me  :-[ I use my SB Touch with USB output to the DAC, so this must do the same.  Don't need a display because I use an Ipad via WIFI to...

Hi Guys, I have been hard at work designing an easy to build but excellent quality power amplifier circuit.  It is based on the amplifier I have been listening to for the past 2 years and includes a couple of things I have learnt since.  What that means is that the platform is reliable and...

Hi Guys, Just to let you know that my website is up and running (finally  ;)).  www.paladinav.co.za There isn't too much on it yet, though I have started out by writing a number of articles relating to power supplies: http://paladinav.co.za/power-supply-home/ There are 3 articles related to...

Good morning! If you wonder why I haven't been around the past 2 weeks or so, this project here is the answer...  Not strictly audio related, but it will be used to make audio related projects so hence I guess the rules can be flexed just a bit? Some of you may know that I purchased Gert's...

Hi Gents, I know most of you don't frequent the DIY section, so this is just a heads-up.  I am planning an "open-source" forum project for an open baffle (OB) speaker at a reasonable price - something using locally available drivers and not overly complex to build so that even fellow members...

I have had a number of casual requests from guys wanting to do an OB speaker, so perhaps we should start looking into it  ;) My thinking is as follows: 1.  Use drivers that are locally available and will not break the bank.  Perhaps we can do some kind of a group deal via our friends at...

Hi Gents, I was looking through some of my old photos and came across some interesting projects - some of these I didn't even remember doing until looking at the pictures again.  There are many of these kinds of projects in my archives - some you may have seen, and probably a couple you have...

Hi Gents. I haven't been on the forum at all for the past couple of months.  No specific reason - just needed a bit of a break I guess.  Anyway, things haven't been standing still during my absence - forward is the only motion we can allow  ;) I see I have a number of PMs.  I will go through...

Hi Guys, It's been a while since I last posted anything about this project - too many things going on at the same time, but I thought I would share some photos of the build progress of the very first pre-amplifier using all PALADIN parts. This specific unit is configured for single-ended (RCA)...

Hi Gents, I received the delivery of PCBs last week and have been busy soldering up a couple of boards to test that everything works.  I am happy to say that this PSU works as intended and has even exceeded my expectations! Here is a pic of the board mounted to a fairly sizable heatsink on...

I was asked by a fellow forum member to look into designing a loudspeaker protection system.  Basically something that will help a speaker survive an amplifier fault condition. Amplifier faults often result in the speaker output being connected to one of the power rails because when a...

Hi Gents, I have been thinking about making cast speaker cabinet for a number of years now, but have never taken the plunge and started with it.  Now however I think it's time for some action, so I thought I would share my ideas and get your opinions on the matter. To start out with, I want to...

Hi Guys, I thought I would share some of the things happening "behind the scenes" as such relating to the PALADIN brand: My idea with the PALADIN brand is a foundation built around quality and simplicity of use.  In other words, provide quality products with great features (and / or...