[Eliot Ness]

Years ago I bought a vintage no-name speaker substution box. I didn't use it much but when it helped me determine the slightly distorted sound from a Zenith console was the speaker it was well worth the $20 or so that I paid for it.

Today I use a different brand, but in addition to troubleshooting bad sound it lets me use the more convenient sub box when a console chassis is on the bench instead of pulling the original speaker and risking poking a finger in the cone.