Originally Posted by 1Oldschool
The simple fact that the sub gets the same signal as the mains is reason enough to use the high level connection. I look at this this way, the engineers know their products more than our friends here in the forums. All respect considered. Also, I set my LFE to 120 Hz. I see no mention or debate of this setting. Time after time I have read that when a movie sound track is recorded, they intentionally send from 120 Hz and down to the LFE channel. By using any other setting would not be natural to the intended dynamic.
And as far as adding more subwoofers, if anyone takes a moment to review my diagram, the RLE-528 is in the far left corner of the room. Yes it pressurizes the whole room however you can tell the majority of the energy is in front of you. And the member who mentioned using room treatment, I have not installed any yet so I cannot comment there although, I'm sure I will see a drastic improvement by using treatment even if it's just behind my seating position. Going back to adding additional subs, I have located my REL T-9 on the right side of the sofa and rerally like the effect. It feels like the energy is filling in on that side nicely where it's slightly, and I mean "slightly" deficient on the opposite side. For this, another T-9 will be added when funds permit. In addition, I might add the high level connection to these from the rear speakers. Why not?
To top it off, I might add another REL to my center channel. I understand that could add a whole new dimention to dialog making it fuller and much clearer.
My system is coming to gether nicely. Oh, and I have a CD on order, the soundtrack from "Sneakers", recommended by REL for dialoing in their subwoofers. I was at my local dealer yesterday and he played the suggested track #4 through a pair of $15,000 Bowers & Wilkins complimented by a REL T-7. The room was very large with no treatments and the REL did a real nice job providing awesome sub bass. Track #4 from the Sneakers soundtrack is an awesome piece with lots of very low frequency information with very little mid-frquencies and no highs. Should be a breeze getting the REL dialed in to almost perfect settings. I must say what the T-7 did at the dealer was VERY impressive! I can't wait to see what the R-528 does once it's fully broken-in. So far it is an awesome subwoofer!
[IMG ALT="Scale: 1 square - 1'
The numbers in balloons are db levels from the subwoofer in those locations measured by an Audyssey microphone located in the center of the sofa indicated by the "x"
This is a studio condo. Everything is completely open with the exception of the bathroom of course. Note the corner fireplace and a wet bar located to the right."]http://www.avsforum.com/content/type/61/id/243010/width/1000/height/1000[/IMG
Sorry but you're doing it wrong. You don't send LFE + high level, then use the subs own crossover. There is no point at all.
Ignore Rel setup. Your standmounts aren't full range, so why use up amplifier power, sending them frequencies they can't reproduce? THD is higher, amp power is wasted. Set them to no lower than small 60hz. All <60hz frequencies from the L/R will be sent to the LFE output.
Now if you had a Hi-Fi, then you don't have any bass management, so speakers will receive full-range, and you'd send full-range to the sub. Not much you can do about that. But in a AV system? Why are Rel "special" when it comes to their setup? It's just a blinking crossover, just like every other subwoofer crossover LOL. There are no magic fairies in your subwoofer.
Whether it's high or low level it's the same thing. The av processor routes channels to the sub, depending on the crossover settings. Do you really think this will degrade sound quality in some way? LOL The only difference being the high level input is attenurated. The line level isn't.
For my Hi-Fi, I'm not running high and low level. That's pointless. However from my stereo analogue pre-amp pre-outs I go into the subwoofer RCA input. Inside that is a 80hz high pass filter. From the filtered outputs, it goes back into my first poweramp, then onto the second power amp. You then adjust the subwoofers own crossover to match. So the power amplifiers only receive >80hz so not wasting power amplyfing frequencies the speakers cannot reproduce. This is different method of bass management, in a way.
Previously I sent full-range to the speakers.
For you, disconnect high level input, set to small 80hz all round, bypass or max out the subs own crossover, calibrate, job done.
In your setup have you level matched high level and low level inputs with test tones?
With the high level input disconnected, output test tone from your av amp, calibrate to 73db. Adjust the low level control.
Disconnect low level input, connect high level input. Output tone to your L/R speakers (both) then adjust to 73dB. Adjust the high level input.
Reconnect the low level input, output tones at the same time to LFE, L&R the output should b 75dB
What a blooby mess LOL