I didn't say the sound was bad, just that the venue is a dump. It's dirty (even by venue standards) and has plumbing problems (ask anyone who was at one of the shows earlier this year where a pipe burst and emptied a flood of dirty waste water on the heads of the balcony level audience).
The staff is extremely rude/aggressive to its patrons (same with Gramercy...oh and they're both owned by Live Nation!) and the shows are rarely ever on schedule. I hear nothing about complaints about Irving from people who've played there and it's been practically bankrupt/on-the-verge-of-closing for years now.