Andrew, on thing to consider is following up with your receiver tech support to make sure the HK box is acting properly. For example, many AVRs have a 10dB boost option for LFE as the reference levels are quite high for most home users. Some label it as -10dB -> 0dB while others note it as 0dB to 10dB.
Also the configuration of the AVR has a lot to do with the overall impact of the sound. For example, your BD player may be trying to decode the sound and send it as analog out in which case the speaker setup with the player is important.
