Yep. 70dB at where? Stage, sound booth, parking lot, police station? It's a meaningless number without a well defined measurement position being specified.
+1. The 70 dB could refer to outside the club or at the neighboring property which could potentially be reasonable. But if the 70 dB is the volume limit for the front of the audience, then the owner should probably book acoustic gigs only, with no drum kits. I don't think my (3 piece plus vocals) classic rock band could comfortably play at 70dB. The drummer would rebel.
We had a club owner come out with his meter and check us several times and tell us to turn down, which we did. Eventually the drummer started playing sarcastically (almost inaudibly), then when he got to the cowbell part, started beating the bejeezus out of the cowbell. I couldn't help myself and busted out laughing.
The audience loved us at that club but the owner turned it into a strip bar so we don't play there any more.


