[Malice]

I've been following lovingdvd's posts as I have recently moved my sub and need to re-EQ with the BFD. The questions and points that lovingdvd has come up with over several threads mirror some of my own views.

Although my Denon has PEQ on the mains only and it will not EQ the sub, the amp nonetheless will "test" the sub for its response. As I get different results whether I have the sub switched on or off, one can only assume that the sub's response plays a part in the PEQ on the mains where there is an overlap of frequency production.

Although the PEQ can be turned off, there is no doubt that PEQ does enhance the upper frequency response in my room.

So, does one PEQ before or after BFD, and with or without the sub either (a) physically turned on or not, or (b) turn off the sub in the DSP to get a full FR across the mains which then will be PEQ'd to its optimum level without a sub? In theory then if you add a EQ'd sub which is flat, switch on the sub in the speaker config and set the crossover on the amp, the final outcome should be flat.

I have found that with in-room reinforcement of lower frequencies up to two octaves below the XO, the interaction of mains and sub has been unpredictable to say the least. If I can some how get a flat response from the mains on their own, and the sub on its own, then when a XO is applied I should be nearer the mark and with PEQ on the mains in tact for the upper frequencies.

What I may do is document my progress as I redo my EQ and show the different responses for each element and what happened at each stage along the way.

Bob