#2978 - 10/27/02 12:01 AM
Crossovers and the Sub
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Deputy Gunslinger
Registered: 10/22/02
Posts: 7
Loc: Alpharetta, GA
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Still setting up the 1050 for HT and have a sub that has a crossover built (LP Filter Control)in that cannot be turned off. My front mains are rated at 50-20 (+-3dB) and the center is rated at 120-20 (+-3dB)...with all the speakers set to small. My question is where should I set the crossover on the 1050 and also with the sub? I had it set at 60 per my understanding in the manual. However, there is little or no bass.
Also on a different subject I am hearing little to nothing from the surrounds. I have preformed the "test tone" and the volume matches the fronts/center. Do I need to over compensate and increase the volume level for the rears? Thank you for your input and help. This is a great product and site.
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#2979 - 10/27/02 12:40 AM
Re: Crossovers and the Sub
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Deputy Gunslinger
Registered: 10/22/02
Posts: 7
Loc: Alpharetta, GA
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I was just playing with the sub and noticed it has two inputs. The manual says one is for a A/V reciever (I originally assumed this would be the correct input) and the other is for an external crossover. Should I assume that the 1050 with its builtin crossover would be considered an external crossover network connection and not an A/V receiver for this purpose? Thanks.
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#2980 - 10/27/02 03:16 AM
Re: Crossovers and the Sub
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Desperado
Registered: 06/29/01
Posts: 894
Loc: Grants Pass, OR
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If your center channel is only rated down to 120, I would set the crossover higher than 60. Since the cc can't reproduce it, all the information between 60 and 120 will be lost for the center channel (and potential cc damage?). How low are your surrounds rated? The crossover setting on the 1050 is universal for [b]all[/i] speakers set as small.
As to which input on the sub, I would say give 'em both a try. You may even want to leave both connected. I ended up with the best performance from my sub by connecting both the LFE and the speaker level outs from the 1050. Also, just verify you've told the 1050 you have a sub.
If you set your surrounds so that they match the levels with the fronts from your viewing position, you shouldn't have need to ramp them up any higher. Assuming you have a source which is using the surrounds (DVD player?) find some material with known active surround information and give that a spin to make sure they are being decoded right (we know they function since the test signal works). Could be you have a setting somewhere not right. Make sure the 1050 is recognizing the multi-channel material you're sending to it. Maybe your player's output isn't set to the right format so you're only sending a stereo signal or something. Finally, also make sure your 1050 is set to surround and not just stereo.
That should be enough to get you started looking at things while some others round here come up with the multitude of things I'm sure to have forgotten at this late hour. Good luck! Be sure and report back how it turns out!
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#2981 - 10/27/02 11:21 AM
Re: Crossovers and the Sub
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Desperado
Registered: 03/21/01
Posts: 14054
Loc: Memphis, TN USA
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Owl's_Warder's got you on the right track here. With a center like that, I'd try crossing it over at 120Hz -- the center channel takes a lot of the load in home theater work, so you don't want a hole there. I'm guessing that the "external crossover" input bypasses the sub's crossover. That would probably be preferable in this case. As for the surrounds, there will be a lot of modes where they won't get much -- find a good demo DVD (some that spring to mind are the Battle of Carthage scene in Gladiator, the pod race in Phantom Menace, or Fellowship of the Ring -- which is also a good test for your sub, as the mix is very bass heavy). Same applies to the sub -- raising the crossover will probably help, and you'll need some test material that includes some low end material (SVS has some ideas here ). ------------------ gonk -- Saloon Links | Pre/Pro Comparison Chart | 950 Review
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#2982 - 10/27/02 06:56 PM
Re: Crossovers and the Sub
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Deputy Gunslinger
Registered: 10/22/02
Posts: 7
Loc: Alpharetta, GA
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Owl and Gonk thank you for the quick feedback. Will definetly change the crossover. I will be curious to see how going to 120 will effect the fronts sound quality/effect. I am assuming everything between 50 (the speakers bottom) and 120 will be lost. Again, thanks.
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#2983 - 10/27/02 10:55 PM
Re: Crossovers and the Sub
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Deputy Gunslinger
Registered: 10/22/02
Posts: 7
Loc: Alpharetta, GA
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Owl/Gonk - I started thinking about the CC response of 120 and checked their website and the CC actually goes down to 60hz. The 120 was for their rear CC...my mistake. I should have figured that out when I started typing last night - sorry for the misinformation. I assume then that with fronts that go to 50 and the CC at 60 I could set the crossover at 60 or 80. Will use 80 since the rears only go down to about 80. Thanks again for the help, you guys have been great.
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#2984 - 10/28/02 12:23 AM
Re: Crossovers and the Sub
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Desperado
Registered: 03/21/01
Posts: 14054
Loc: Memphis, TN USA
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80Hz sounds like a good choice. If your surrounds are -3dB at 80Hz, you might even give 100Hz a listen on some good active-surround demo material just to see what happens. The result of moving the crossover farther from the lower limit of the speakers will be that the mains and center will not get any material below the crossover point as you point out, but the material won't be truly be "lost" -- it will just be passed to the sub, which in many cases is better capable of handling those frequencies anyway. It's all a matter of finding the point where the speakers and the sub blend together the best. Good luck! ------------------ gonk -- Saloon Links | Pre/Pro Comparison Chart | 950 Review
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#2985 - 10/30/02 12:49 AM
Re: Crossovers and the Sub
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Desperado
Registered: 08/19/02
Posts: 430
Loc: charlotte, nc usa
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gonk:
i'm soon to purchase a 1050 for a client of mine. besides this post, i'll need your help as i get closer to installing his system for him.
i hadn't thought about this until now, but the 1050 has global high pass settings? and does the remaning low end go to the sub?
also, is sacd/dvd-a just 6 channel bypass with no bass management?
_________________________
"Time wounds all heels." John Lennon
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#2986 - 10/30/02 07:34 AM
Re: Crossovers and the Sub
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Desperado
Registered: 03/21/01
Posts: 14054
Loc: Memphis, TN USA
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I'm not sure about the high pass right off the bat, but the SACD/DVD-Audio is pure analog bypass with no bass management. ------------------ gonk -- Saloon Links | Pre/Pro Comparison Chart | 950 Review
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