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Setting Up Your SubWoofer 101 - Page 4

post #91 of 112
8/26/08 at 9:07pm
Thread Starter 
Added:

Sound Thinking - Floyd E. Toole, PhD - Audio White Papers


I'll be cleaning up this thread and revamping it over the next couple of weeks, when time allows.

Thanks to all.
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post #92 of 112
9/9/08 at 12:13pm
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Blah...... bump

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post #93 of 112
10/4/08 at 9:18am
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bumping again
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post #94 of 112
10/9/08 at 4:28am
Hi Guys,

I just want to make sure that I'm getting this right. I'm about to calibrate my speakers with RS SPL and I know that I can use the AVR's internal test tone to attain my 75db ref level. My question is for the sub, so its suggested that I use the internal tone for the sub as well? Meaning I'll try to attain 85db while the room is rumbling, is this correct? I don't have a test cd yet that's why I want to make sure. Thanks.
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post #95 of 112
10/9/08 at 6:42am
Quote:
Originally Posted by lorneth1 View Post

Hi Guys,

I just want to make sure that I'm getting this right. I'm about to calibrate my speakers with RS SPL and I know that I can use the AVR's internal test tone to attain my 75db ref level. My question is for the sub, so its suggested that I use the internal tone for the sub as well? Meaning I'll try to attain 85db while the room is rumbling, is this correct? I don't have a test cd yet that's why I want to make sure. Thanks.

if speakers leveled to 75db, then sub should be around same.
that will still be running the bass a little hot
but bass at 85 is way hot.
remember spl meter is off on the low freq. for corrected measurements it would be closer to around 72db.
if you have test tones on your receiver you shouldnt need a test cd
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post #96 of 112
10/9/08 at 11:11am
I've been having trouble finding an answer to perhaps the first question that needs to be asked/answered when considering a sub woofer. Forgive me if this is the ultimate newbie question, but can someone consisely explain the difference between having a sub out versus a sub pre-out on your receiver? Explaining in non-technical terms would be best, as newbies will likely be the only audience for this question. Thanks!
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post #97 of 112
10/9/08 at 11:52am
Quick question, i set up my system using my RS spl meter and the receiver's test tones (sr 606), so i have everything set up fine for level calibration.

But Im a bit confused about crossover levels for the various speakers.
I have four Polk R50 towers, on Polk Csi3 center, and one Ed A3-300.
The r50's i have set at 60hz, the center at 80hz, and the a3-300 is where im confused, the knob goes from 50 to 100 hz, but it doesnt have any marks in between. Is there a way to use the SPL meter to set it to the correct setting, or just go with what sounds best. I think I have it right around 60 to 70 hz, but im not sure. The receiver only lets me set it to 80hz, yet i have my towers to 60hz. Is this correct, in adjusting it on the sub?
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post #98 of 112
2/20/09 at 1:34pm
Thread Starter 
BUMP
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post #99 of 112
2/20/09 at 10:18pm
Why is this still not a STICKY!!!!!!!!
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post #100 of 112
2/20/09 at 10:52pm
Quote:
Originally Posted by Gov View Post

Why is this still not a STICKY!!!!!!!!

Probably because of all of the links to other sites in the main post? That's the only reason I can think of...
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post #101 of 112
2/23/09 at 5:53am
Quote:
Originally Posted by Gov View Post

Why is this still not a STICKY!!!!!!!!

I'm asking the same thing but I think lalakersfan34 is probably right.

We get so many questions about why my sub doesn't sound right that we really need a sticky of the most common setup problems.
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post #102 of 112
4/27/09 at 8:32pm
Thread Starter 
Quote:
Originally Posted by JimP View Post

I'm asking the same thing but I think lalakersfan34 is probably right.

We get so many questions about why my sub doesn't sound right that we really need a sticky of the most common setup problems.

yes very true.....

bump
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post #103 of 112
4/27/09 at 9:01pm
Quote:
Originally Posted by DrPainMD View Post

yes very true.....

bump

Wow I'd soon do King Kong 1976 mega low end bass that will reach down low! Oh yes waterfalls coming!!
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post #104 of 112
5/30/09 at 9:37am
Thread Starter 
bump this ole thing
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post #105 of 112
6/7/09 at 9:20pm
hi There,

Question for you i am a newbi to all of this especially with subwoofers. My system as follows.

Pioneer Elite SC-05
Monitor Audio RS 8's
Monitor Audio RSLCR (centre channel)
APC Power Condtioner: APC AV Black 1.5kVA H Type Power Conditioner 120V
OPPO DVD Player

All my speakers are bi-wired, now the question is since i have good quality main speakers with good bass even the centre channel has good bass management what would the settings be? The sub woofer that i most likley will be purchasing withing the next 2 weeks will be SVS PB13 ULTRA.

I have read some of the links regarding turning the mains to small and vice versa please help the more i read the more confused i get. One reason i have good speakers so i have no clue what to do :-(

I will be getting rear speakers when i move into a house to make it a 7.1 system. What should i do???
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post #106 of 112
6/7/09 at 10:10pm
Start with the speakers set to small and an 80Hz crossover. If your speakers will go significantly lower, then try a lower crossover. If the speakers go to the 40s or even 30s, you are still pushing them, so let the sub do what it is designed to do.
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post #107 of 112
7/21/09 at 5:15pm
Thread Starter 
Bump for bumping it
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post #108 of 112
7/24/09 at 7:22am
Great thread,
Thanks
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post #109 of 112
7/24/09 at 7:44am
Quote:
Originally Posted by pikkashoe View Post

Quick question, i set up my system using my RS spl meter and the receiver's test tones (sr 606), so i have everything set up fine for level calibration.

But Im a bit confused about crossover levels for the various speakers.
I have four Polk R50 towers, on Polk Csi3 center, and one Ed A3-300.
The r50's i have set at 60hz, the center at 80hz, and the a3-300 is where im confused, the knob goes from 50 to 100 hz, but it doesnt have any marks in between. Is there a way to use the SPL meter to set it to the correct setting, or just go with what sounds best. I think I have it right around 60 to 70 hz, but im not sure. The receiver only lets me set it to 80hz, yet i have my towers to 60hz. Is this correct, in adjusting it on the sub?

Yes.

You want your sub to extend UP past where your drop off is on the fronts..so there is no missing band.
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post #110 of 112
3/20/10 at 5:42pm
Quote:
Originally Posted by ransac View Post

Start with the speakers set to small and an 80Hz crossover. If your speakers will go significantly lower, then try a lower crossover. If the speakers go to the 40s or even 30s, you are still pushing them, so let the sub do what it is designed to do.

Hi Ransac, or anyone

My speakers specifications are below

If you’re looking for a bold, dynamic loudspeaker with extended low frequency bandwidth and loudness capability, you've come to the right place. The RS8 features dual 6 1/2 inch C-CAM (Ceramic Coated Aluminum Magnesium) woofers, a 6 1/2 inch C-CAM midrange driver, and a 1-inch C-CAM gold dome tweeter.

The RS8 woofers and midrange driver incorporate new edge-wound voice coils to provide increased efficiency, output, and power handling. The new voice coils have more copper and heat capacity than conventional voice coils resulting in 91dB efficiency and 175-watt power handling for the RS8. The speaker's dynamic range is also increased because the 'start-and-stop' of the new voice coil more efficiently converts incoming signal into motion.

The RS8's 2 1/2 way, four driver design is optimized by an integral structure of dedicated driver chambers (a sealed enclosure for the midrange and a ported enclosure for the dual woofers) providing increased bass extension while maintaining high overall efficiency.



Monitor Audio Silver RS8 Towers
Frequency Response: 33 Hz - 30 KHz
Sensitivity (1W@1M): 91 dB
Nominal Impedance:
6 Ohms

Power Handling (RMS):
175 W

Recommended Amplifier Requirements (RMS):
40-175 W
Tweeter Crossover Frequency: 3 KHz
Drive Unit Compliment: 2 x 6” C-CAM® Bass Drivers, 1 x 6” C-CAM® Mid-range Driver. 1 x 1” (25 mm) gold dome C-CAM® tweeter.
Cabinet Design: Balanced velocity twin reflex ported
Product External Dimensions:
(H x W x D) 900 x 185 x 270 mm
(35 1/2 x 7 1/4 x 10 5/8 inch)

Plinth Dimensions:
(H x W x D) 25 x 255 x 325 mm
(1 x 10 x 12 13/16 inch)

Individual Weight: 21 Kg (46.2 lb)

So i still should set my speakers to small? They handle bass very Well, all my speakers are bi-wired even the centre channel. My paradigm sub 25 comes next week and i just want to make sure i have the right settings.
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post #111 of 112
3/20/10 at 6:19pm
Quote:
Originally Posted by whasaaaab View Post

Hi Ransac, or anyone

My speakers specifications are below

If you're looking for a bold, dynamic loudspeaker with extended low frequency bandwidth and loudness capability, you've come to the right place. The RS8 features dual 6 1/2 inch C-CAM (Ceramic Coated Aluminum Magnesium) woofers, a 6 1/2 inch C-CAM midrange driver, and a 1-inch C-CAM gold dome tweeter.

The RS8 woofers and midrange driver incorporate new edge-wound voice coils to provide increased efficiency, output, and power handling. The new voice coils have more copper and heat capacity than conventional voice coils resulting in 91dB efficiency and 175-watt power handling for the RS8. The speaker's dynamic range is also increased because the 'start-and-stop' of the new voice coil more efficiently converts incoming signal into motion.

The RS8's 2 1/2 way, four driver design is optimized by an integral structure of dedicated driver chambers (a sealed enclosure for the midrange and a ported enclosure for the dual woofers) providing increased bass extension while maintaining high overall efficiency.



Monitor Audio Silver RS8 Towers
Frequency Response: 33 Hz - 30 KHz
Sensitivity (1W@1M): 91 dB
Nominal Impedance:
6 Ohms

Power Handling (RMS):
175 W

Recommended Amplifier Requirements (RMS):
40-175 W
Tweeter Crossover Frequency: 3 KHz
Drive Unit Compliment: 2 x 6 C-CAM® Bass Drivers, 1 x 6 C-CAM® Mid-range Driver. 1 x 1 (25 mm) gold dome C-CAM® tweeter.
Cabinet Design: Balanced velocity twin reflex ported
Product External Dimensions:
(H x W x D) 900 x 185 x 270 mm
(35 1/2 x 7 1/4 x 10 5/8 inch)

Plinth Dimensions:
(H x W x D) 25 x 255 x 325 mm
(1 x 10 x 12 13/16 inch)

Individual Weight: 21 Kg (46.2 lb)

So i still should set my speakers to small? They handle bass very Well, all my speakers are bi-wired even the centre channel. My paradigm sub 25 comes next week and i just want to make sure i have the right settings.

I have Polk SDA SRS 2.3TL's for mains with a MFW-15 sub for each to handle the bass and this combo is set small. I run Audyssey Pro for the speakers and Audyssey Sub EQ for the dual subs (Conquest and MFW-15) with a 80 hz crossover on all speakers to the subs. Audio is awesome, so set your speakers to 80 hz and let the sub handle all the bass that it can get.

Bill
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post #112 of 112
9/3/12 at 3:06am
Thread Starter 
bump o rama
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