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My wife and I get around quite a lot in our open 50s sports car. She is getting really bugged by the wind noise - wants to listen to audiobooks and music while passengering. So this is not an audiophile requirement - they could be on her head for eight hours almost continuously, so comfort is...

I used to get everything from Timber City in Blairgowrie, but they've become a service nightmare and I wont go there again. Is there anywhere that will supply and cut MDF and plywood without having to queue for an hour or two? My intolerance is stopping my sub build.

My system consists of a Cambridge CXN feeding a Leak 20 valve amp (7W per channel before serious distortion sets in), feeding folded horn speakers with about 103dB sensitivity. The speakers are based on a Coral design with a larger mouth, running one full range 20watt Goodmans Axiom 201 driver...

My son lives in Hilton, and needs to have a Marshall ValveState amp and a Pilot radio repaired. Does anyone have any suggestions of a trustworthy repairman somewhere in KZN? Thanks!

Opportunity for someone. Maybe transparent sound barriers or 100% effective exhaust silencers. https://phys.org/news/2019-03-acoustic-metamaterial-cancels.html#nRlv Researchers develop 'acoustic metamaterial' that cancels sound March 7, 2019 by Kat J. Mcalpine, Boston University BU...

I've been playing a lot of chamber music through the Benz (high output MC) / technics SL1500 ( standard arm) / Geco phonostage / Valve audio Exclame / Goodmans horn combination, and I'm really enjoying the detail and ambience that the setup creates, worlds better than anything I've ever had...

I'm sure someone out there has experience with 10m and longer speaker cables. Please share your experience, and provide any conclusions or lessons learnt. Any science will also be appreciated - eg impedance, capacitance, damping factor Note to those with opinions: If you haven't actually done...

A taste of how the serious guys do it. cdn.comsol.com/comsolnews/COMSOL_News_2017_Special_Edition_Acoustics_low-res.pdf

My wife is dying to hear him, and the concert is sold out - I was too slow as usual! So if you can't go, please think of me!

I just inherited one of these in fair condition, cream in colour.  Only things really wrong are the tube that the antenna retracts into is repaired with pratleys, and there is a piece of the case cracked off above one corner. I switched it on a couple of years ago, and there was a burst of sound...

I've had a new product developed by some students, but I need to have a double-sided (double layer?) PC board made for testing and calibration. any suggestions as to who does this kind of work? No freebies needed.

I would like to experiment with my Tannoys, using the standard crossover but with a non compression driver tweeter. Budget up to $500 a pair (can't quite afford TPL150s) Any suggestions?

Amongst the truckload of LP's I got from Chris Templer (thanks Chris - still busy!) are a number of opera and operatic or oratorio albums, including some very nice boxed sets. The pressings all look excellent - mainly from the early seventies - and many seem unplayed. As far as I can tell there...

I started a business about a year ago, selling Office 365. It's been quite successful. My partner is doing the support for it, but he hates it. We;'ve tried a couple of students but they didn't even come close to working out, so I'm looking again for a support person. The work is little and...

From StackExchange. First let's consider this: We can calculate the current through R1 with Ohm's law:                                                                                                                                    1V/100Ω =10mA We also know that the voltage across R1...

We've been commissioned to do a working IOT prototype for a massive show in three weeks time - where can I get a minnowboard max in Joburg, like today or tomorrow? (otherwise I have a strong suspicion that we are all going to die in this place.................)

Anyone going to the Makers fair in Cape Town on Saturday?

Anyone have any recommendations? In the twilight years of faxing, I don't want any hassles with it!

Anyone have this (vinyl or digital) for me to listen to?

Just got this mail from Chris Templer. .wav files are corrupted just by plugging in the card! Hi, Be warned there is a problem with the latest version of Windows. I subscribe to the Ampex list and it seems many pro audio studios that have upgraded to Windows are finding that after copying wav...