Willem Mengelberg and his orchestra filmed in Epinay in -. So I started off with a tone arm of balsa wood with an effective length of 32 cm

Penn-Elcom is a large manufacturer of flightcase parts. And I'd like to mention this separately: Just to keep things simple:

The woofer must be attenuated before it starts beaming at high frequencies, the tweeter must have protection from low frequencies so you don't blow it up! This substituting process is repeated for all the components throughout the crossover.