RM6800 setup
spudzy
Posts: 4
Hello Eric Wong -
Well...I've visited the Polk forums for several weeks now, after purchasing my RM 6800 speaker setup. I have all the speakers mounted on the walls (2 front, 2 surround and the center) at the height recommended in Polk's literature. I just picked up my new Pioneer VSX-72TXV receiver yesterday. I'm excited to hook everything up, and can't wait to take advantage of this unit's HDMI switching capabilities.
I've read many of your postings, and you appear to be very informed when it comes to subwoofer related issues. I respect your opinion, and with that in mind I have just a few questions to ask.
First, I see you've written about the "double filtering" problem when using the "sub out" jack on an A/V receiver with a subwoofer like the one that comes with the RM6800 speakers (built in filter?). I looked in the Pioneer's manual, and it says that I can in fact adjust the cutoff for bass sounds in the LFE channel. Do you think I could use a sub out cable hookup here, or do you recommend the "Polk method"? Also, if I do use the sub out jack, there is only one of them on the Pioneer, so would I use the Y-adapter method, or just choose either the left or right input on the sub? Finally, if you do in fact recommend the sub out jack, can I construct a good subwoofer cable using RG6 cable with RCA plug ends? It seems like I read this somewhere, and since I have the crimping tool, RG6, and RCA-type ends...I thought perhaps I could save a few dollars by making my own to just the right length.
My final question deals with subwoofer placement, and my only concern here is that I seem to remember reading that the RM6800 sub was not "shielded". My intended location for the sub is about 2 feet to the right of and slightly behind the right side of the TV (a Sony KDF-60XS955 60" LCD rear projection unit resting on it's Sony stand...effectively putting the lower edge of the screen about 2 feet off the ground). Do you think this will be ok, or is it just a matter of watching over time for any color-pulling issues in that corner of the screen?
Eric, I thank you in advance for any help you can offer. I realize you must get many posts like this each day, so I fully understand if you are unable to respond immediately. I'm waiting for some banana plugs and spade terminals anyway, so I'll have a few days before I bring my new system to life!
Thanks again, and keep up the great work of informing us "not too speaker savvy" folk out here in the heartland!
Sincerely,
Jeff
Well...I've visited the Polk forums for several weeks now, after purchasing my RM 6800 speaker setup. I have all the speakers mounted on the walls (2 front, 2 surround and the center) at the height recommended in Polk's literature. I just picked up my new Pioneer VSX-72TXV receiver yesterday. I'm excited to hook everything up, and can't wait to take advantage of this unit's HDMI switching capabilities.
I've read many of your postings, and you appear to be very informed when it comes to subwoofer related issues. I respect your opinion, and with that in mind I have just a few questions to ask.
First, I see you've written about the "double filtering" problem when using the "sub out" jack on an A/V receiver with a subwoofer like the one that comes with the RM6800 speakers (built in filter?). I looked in the Pioneer's manual, and it says that I can in fact adjust the cutoff for bass sounds in the LFE channel. Do you think I could use a sub out cable hookup here, or do you recommend the "Polk method"? Also, if I do use the sub out jack, there is only one of them on the Pioneer, so would I use the Y-adapter method, or just choose either the left or right input on the sub? Finally, if you do in fact recommend the sub out jack, can I construct a good subwoofer cable using RG6 cable with RCA plug ends? It seems like I read this somewhere, and since I have the crimping tool, RG6, and RCA-type ends...I thought perhaps I could save a few dollars by making my own to just the right length.
My final question deals with subwoofer placement, and my only concern here is that I seem to remember reading that the RM6800 sub was not "shielded". My intended location for the sub is about 2 feet to the right of and slightly behind the right side of the TV (a Sony KDF-60XS955 60" LCD rear projection unit resting on it's Sony stand...effectively putting the lower edge of the screen about 2 feet off the ground). Do you think this will be ok, or is it just a matter of watching over time for any color-pulling issues in that corner of the screen?
Eric, I thank you in advance for any help you can offer. I realize you must get many posts like this each day, so I fully understand if you are unable to respond immediately. I'm waiting for some banana plugs and spade terminals anyway, so I'll have a few days before I bring my new system to life!
Thanks again, and keep up the great work of informing us "not too speaker savvy" folk out here in the heartland!
Sincerely,
Jeff
Post edited by spudzy on
Comments
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Hi Spudzy,
I recently went through the same issue and found the different advice/opinions to be maddening. I also had an AVR with an adjustable cross over (Onkyo) and I tried to understand how this figured into the equation. I experimented with both set ups (Polk and LFE). I understood the logic, but could find no info on the effects of an AVR with the ability to set the crossover. I have come to the conclusion that Polk is recommending their method as a "sure fire" way for people to set it up regardless of the AVR and it may not apply as the best way in every case. For me, the best sound came from using the LFE (I use a Y to input to both L and R inputs-my understanding is this just effects the volume by increasing it about ~3db), setting all speakers to small, the sub to yes, and the cross over at 120. I also set the volume of the sub a little past the 1/2 mark. This seems to be great for both music and movies and I am amazed at the sound and the bass from this system. I also posted this and recieved a reply from Eric that seemed to endorse my conclusios.
Good luck and enjoy -
Thanks Chasz...I'll give your suggestions a try. Also received a response from Eric, which was helpful as well.
