Joey , I know what you are talking about the regarding the older RTA's .I still have one of those. My WHITE INSTRUMENTS MODEL 140 is from that era . Made in USA in Austin , Texas and built to last for ever ! My most recent RTA is a GOLDLINE DSP30RM it is more complex but has features so that your readings can appear a little less squirrelly . I have used both units with satisfaction in various applications including a bass rig with satisfaction.
The calibrated microphone and it's placement are critical to what the RTA tells you .
One of my worst experiences EVER___ that I have had with hearing my self was at a gig at a venue called The Keystone Palo Alto. I was playing bass for country singer and song writer Howard Harrelson. I was told just to bring a minimal amount of gear so I took just one little Alembic A-15 bass cabinet instead of the four like I had intended to bring and my SUNN 2000S head and Fender Dual Showman. The Bass that I had was my old Guild Starfire with the EARLY ALEMBIC TRAPEZOIDAL PICKUPS , it was a good pure and clean sounding bass .I was told that the FOH guys would take care of me. What they ended up doing to my bass sound was awful . To make things even worse ,most of what I heard was my bass back slap off the back wall with delay. Pure slow delayed mud like molasses in January ! ___ I played in the Cow Palace a few years after that which is even a larger room and that was even better. Thinking in retrospect now regarding the low frequency back slap delay problem at the Keystone Palo Alto , I believe that they might have been able correct it with a piece of gear that I now own , A t.c. electronic model 1280 and or perhaps and/or a combination of side fill monitors . All old school stuff ! Because I am an Old School Dog .
(Message edited by sonicus on October 11, 2013)