Denon AVR 688 auto set up with audyssey

[murl]

I have some questions and I will try and number them all to keep them straight. Here is what I have:

Denon AVR-688
deftech clr-2000
2 deftech bp-10s
2 Bose 301's surrounds (I know they aren't great)
Velodyne CHT-10

The autosetup does a great job with the distance. My main questions are about the crossover setting.

1. Should I use autosetup?

2. The right main bp-10 always has a phase error (have checked and double checked the polarity, it's right) should I worry about this?

3. It usually wants to set the crossover at 100hz, everything is set to "large" does this mean that everything going to the mains, center, and surround is greater than 100hz and everything less than 100hz is going to the sub?

4. If the answer to number three is yes would I benefit in sending a full signal to the mains, center, and surrounds?

5. Should I even use the crossover in the receiver if my sub has one, or run a full signal to everything (mains, center, surrounds, and sub) and just cross it over at the sub? (I seem to get localization)

6. What should the phase of the sub be set at 0 or 180?

 

[jostenmeat]

I h
The autosetup does a great job with the distance. My main questions are about the crossover setting.

1. Should I use autosetup?

I would. Or... I would at least try, because hey, its a feature you have. Learn how to properly use mic, and you can still tweak some things after calibration. You should always be able to switch out of Audyssey calibration whenever you feel (or at least you can with mine).

2. The right main bp-10 always has a phase error (have checked and double checked the polarity, it's right) should I worry about this?

I don't know. Sorry.

3. It usually wants to set the crossover at 100hz, everything is set to "large" does this mean that everything going to the mains, center, and surround is greater than 100hz and everything less than 100hz is going to the sub?

If everything is set to large, then there is no rerouted bass going to your sub. Your sub will only play LFE. This happens a lot with Audyssey calibration, and it seems it has a lot to do with implementation in the receiver model. There has been some pressure applied by consumers and/or Audyssey towards receiver mftrs in how their product is implemented.

So, please feel free to apply xover! Being unfamiliar with your speakers, maybe 80hz all around for starters (and very possibly lower than that for you mains, and higher than that for your sats).

A problem that you can run into, which you don't seem to be, is if Aud DID apply high xovers, and you wanted to run full range. For my understanding is that the correction will be applied to freq's above the chosen xover, and not below. Therefore, if it chooses a high xover like 250hz for Bose sats, and you want to run them at 80hz, that freq range was uncorrected by Audyssey.

4. If the answer to number three is yes would I benefit in sending a full signal to the mains, center, and surrounds?

Apply xovers is my advice. Its totally fine to do.

5. Should I even use the crossover in the receiver if my sub has one, or run a full signal to everything (mains, center, surrounds, and sub) and just cross it over at the sub? (I seem to get localization)

Absolutely use xover in receiver, and completely disable xover in the sub. Either turn it off, and if not possible, raise xover point on sub to the maximum. You do not want cascading xovers.

6. What should the phase of the sub be set at 0 or 180?

Whatever sounds better. Literally. Try some test discs. When the phase is dialed in, the audio/bass should sound fuller.

Whew.

 

[murl]

In answer number three you said if you have it set to large it will send a full signal to everything but the sub. Aud applys the xover at 100hz, I usually change it to 80hz, so just to be sure I'm clear on what this means. I still have a full signal going to all speakers but I only have LFE 80hz and under going to the sub?

 

[jostenmeat]

Correct.

However, I don't recommend full range for your speakers. The truly full range speaker is a true rarity, and even if you DID have full range speakers everywhere, room response does not always make it the desired choice, subjectively speaking.

The only way I could see running non-full range speakers as full range is if all of the following requirements were met: Volumes are only ever of very modest levels, very small room, and very close distance seated to speakers. Or something like that.

 

[ParadigmDawg]

Read this link.

http://www.avsforum.com/avs-vb/showpost.php?p=12162481&postcount=2

 

[Midcow2]

BP10 recommendations from Def Tech

I am not trying to dispute Jostenmeat's advice because he has given you some very good recommendations. Normally on front speakers you set them to "small" and use the receiver's crossover to send lower Bass signals to the subwoofer.

The recommendation from Def Tech is to set at "Large", you might at least try "large" because the specs on the BP10s say they can go as low as 20Hz.

The you can set your bass out put to "both" and have it send to BP10s and your sub.



BP10B :Specifications

Dimensions | Metric :42" H x 8" W x 12-1/4" D | 106.7 x 20.3 x 31.1 cm
Driver Complement :Two 1" aluminum dome tweeters; Two 6-1/2" high definition bass/midrange drivers
Frequency Response :20Hz - 30 kHz
Impedance :Compatible with 8 Ohm outputs
Sensitivity :91 dB
Recommended Associated Amplifier Power :20 - 300 watts
A/V Receiver Crossover Setting :Large; Full Bandwidth
Inputs :One set of 5 way binding posts
Available Finishes iano-Black Gloss
Accessories :Feet; Isolation Spikes
Packaging :One to a carton
Weight | Metric :57 lbs | 25.9 kg
Warranty :5 Years

 

[murl]

O.K. so I took my time, without dogs running, water running, and my wife talking to me, and did the calibration. This time I was very happy with the way it sounds from the auto set up. It ended up crossing it over at 40hz and not sending the bass to the mains, what do you guys think? I noticed I am not getting as much localization from the sub with it xovered at 40. The only thing that I may change is the sub level, it is very low, and I like a little more bass.

 

[Midcow2]

Maybe a little higher x-over than 40 hz

O.K. so I took my time, without dogs running, water running, and my wife talking to me, and did the calibration. This time I was very happy with the way it sounds from the auto set up. It ended up crossing it over at 40hz and not sending the bass to the mains, what do you guys think? I noticed I am not getting as much localization from the sub with it xovered at 40. The only thing that I may change is the sub level, it is very low, and I like a little more bass.

You are the final judge and if it sounds good to you then that is the way to set it. I set all mine equal with SPL then added 10dB to sub. You might want to experiment a little more with crossover, maybe a little; higher because if you are not seeing localization in the sub maybe a lot of your frequencies are higher than 40Hz. I'm thinking 80Hz might be better, but again you are the final judge and if it sounds good to you great.

Take Care!

MidCow2

 

[murl]

You are the final judge and if it sounds good to you then that is the way to set it. I set all mine equal with SPL then added 10dB to sub. You might want to experiment a little more with crossover, maybe a little; higher because if you are not seeing localization in the sub maybe a lot of your frequencies are higher than 40Hz. I'm thinking 80Hz might be better, but again you are the final judge and if it sounds good to you great.

Take Care!

MidCow2

Yeah I should have listened to more on it before I made the decision. I listened to some different things and changed it around a bit. I have it on 80hz now. Thanks for all of your help guys.