tauzero

Put mouse cursor at start of address bar, hold down left mouse button, move along to the .html (stop just before the question mark), Ctrl-C and you have it all ready to be pasted. That's in Chrome, other browsers are the same.

@stevie and @Phil Starr might have some suggestions - after all, measuring speaker frequency responses with a specific microphone and measuring microphone frequency responses with a specific speaker are two sides of the same coin.

There is a very elderly website that has at least some relevant information - https://www.ymec.com/hp/signal2/index.htm

Admittedly rather (width of a) hair splitting, but according to Vigier they're 42.5mm.

Everybody hurts - REM Mad World - Gary Jules Will you - Hazel O'Connor Hero - Enrique Iglesias Take on me - A-Ha (acoustic version) Times like these - Foo Fighters (acoustic version) Fields of gold - Sting Many rivers to cross - Jimmy Cliff Stand by me - Ben E. King

You might want to have a look at sweep frequency generators - these generate a single variable frequency sweeping typically from 20Hz to 20kHz, and so you can get a frequency response by mapping amplitude against frequency.

https://www.aliexpress.com/item/1005004890664840.html ?

That's a word to add to my vocabulary, although I suspect I'll never have cause to use it.

An old friend of mine had a Capri that he was very proud of. He was sitting at some traffic lights when a tatty brown Moggy van pulled up alongside him. He decided to take on the challenge and was promptly left in the dust, and later found out that under the Moggy's bonnet was a V8 Chevy engine.

It's rare you see craftsmanship like on https://www.ebay.co.uk/itm/267506220110

My brother worked as a kennel boy while he was a student. He told me that one of the tricks of the trade was to stick a matchstick up the dog's bum just before taking them out to the parade so as to stimulate their desire to reduce their weight.

Or load it into Irfanview and save it as whatever format you want.

I came up with the same number as you did, none.

I have in the past dismantled a GK 200MB combo, and the speaker wires on that are really thin - what I would think of as flexible hookup wire. And GK probably know what they're doing (although personally I wouldn't go for anything that thin, I use whatever spare mains lead is knocking around).

You can get colour matching wax filler that you melt into the holes, like https://www.ebay.co.uk/itm/325271292000. I used it when I was drilling new pickup screw holes on a bass and carelessly went right through, and the repair is completely invisible.