Using Krell rca & bal outputs for the same channel


Why would I do that?
My sub has a highpass filter above 65hz. The dedicated sub channel can have info above that. So how can I get the missing freqs above 65hz. I can get a second sub but I’d rather not.
Since Krell’s RCA & balanced outputs are active at the same time, I can send the sub channel to another speaker using a Y cable to get the missing info. I’m thinking if I must use a Y cable and overtax a speaker with sub info, I’d send it to a rear speaker.
Does anyone know if using both outputs will affect the sound? The manual says that both outputs are active but to connect using only one. Will there be impedance issues? I also have an Audyssey EQ between the PrePro and the amp, so I would use the Y cable from sub and one of the rear to the EQ’s rear channel which will turn the analog signal into digital for EQing and back to analog for the amp.
captaincapitalism
Whatever your trying to do seems a bit insane and completely convoluted. What does the subs cutoff have to do with your main speakers/rear? Sounds very radio shackish to me...maybe a Bose all in one setup would be best for you? Your not bleeding your mains off of the sub are you via speaker cables? Sub crossovers are mostly scrap so don't destroy your signal...use pre out for sub or a dedicated sub out!
What does the subs cutoff have to do with your main speakers/rear?
My main goal is to get my missing freqs between 66 - 125hz.

Dolby Digital's specs allow for freqs up to 125hz in the dedicated LFE channel. If my sub cuts off freqs between 66 and 125hz, I will never get that information.
If I send the sub signal to another speaker I will get my missing freqs. I'm just trying to figure out how to send the LFE to another channel so I can get the missing freqs.
I doubt they're missing, aren't they coming through your main speakers? You would certainly notice that big a gap in frequencies in any musical content. Just because there is an upper cutoff for the LFE channel doesn't mean that the output to the main LR channels has a low cutoff at that frequency.

This, of course, should be taken with a grain of salt, as I have an HT system, but don't really know how it works as a technical matter. But I hear plenty of lower frequency info from my main speakers on movies.
Rcprince has it correct. Remember, a subwoofer is just that...a SUB woofer i.e..below normal bass frequencies.