It was verified by independent measurement, they were not flat down to 20Hz, only 35hz, but useful output went below 20Hz (i.e less than 12dB down). The JM labs I have now are flat to 40Hz but do pretty much nothing below that and it is noticeable compared to the Celestions.
Originally Posted by Jimbo
Agree with you about most people's speakers but most people tend to use teeny tiny little things that essentially do not do any bass at all.
There are several subwoofer designs that will do 8Hz, I didn't suggest there were speakers that go that low but there might be.
Current Lash Up:
Technics SL1200 with Sumiko h/s & Nagaoka MP50 * Firebottle valve MM phono stage * Parasound CDPi1000 * NVA P90SA passive pre / Krell KSA50S Power amp * JM Lab Electra 926 loudspeakers *
"I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." - Hunter S Thompson