It grieves me to admit that for 15 years I have assumed (in error) that the output socket on my RS meter was a jack socket rather than an RCA (phono) socket.
I just discovered my error after dismantling the RS meter to discover a mini jack doesn't connect to any of the important bits of the socket.
So, finally, here is my first REW response curve for my 4 x 15" IB with the (40Hz) main speakers running as well. Crossover is at ~80Hz (24dB/octave). HT Shack correction figures applied.
BFD with just 4 filters set from manually recorded sinewaves. I can work on the BFD properly now I have REW working with my RS meter.
Never was I more pleased to see a wobbly line.
I have no idea what that massive dip is at ~150Hz.
Thanks to you all for your infinite patience.
