Miss Lena, The Lexicon version and the H/K version are more alike than different. I think the H/K version is similar to the one found on earlier Lexicon processors (DC-1, DC-2, MC-1). The main differences: on the Lex you have lots adjustable parameters and L7 works on 2-channel and 5.1 channel sources (on ALL H/K receivers, L7 only works on 2-channel sources). You didn't dream it. Folks thought they found an undocumented feature in one of H/K's receivers, the AVR-8000. Apparently you could turn on L7 processing when playing 5.1 sources (DTS or DD), a feature so far only reserved for Lex processors. AVR-8000 users were enjoying this feature for quite some time until they found out that it didn't really work how they thought.

On Lex processors, applying L7 to a 5.1 source causes the two surround channels to be logic steered over the 4 surround speakers. The front three channels aren't processed (three channels, three speakers, what's there to process?). On the AVR-8000, the discrete 5.1-channel source would first get folded down to two channels and then have L7 applied to it in order to create a 7-speaker presentation.

Basically, they weren't listening to a discrete multi-channel source any more but rather a de-matrixed 2-channel source. It's a testament to LOGIC7's surround processing capabilities that no one noticed for well over a year that they were listening to a 2-channel signal. That too, they only found out by accident when testing bass routing (i.e., never noticed by listening that they were not hearing discrete 5.1).

So in the end, there was no free lunch. ALL recivers from H/K can only apply L7 to 2-channel material.

Best,
Sanjay