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Post by carlp336 on Oct 15, 2010 9:15:34 GMT -5
DIAGRAMS USING a single OUTRCABALANCED
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Post by carlp336 on Oct 15, 2010 9:23:30 GMT -5
my experiences on calibrating duals: once connected i highly recommend calibrating/level matching each sub individually even though they may be the same sub. calibrating individually is as simple as running test tones to the individual subs by disconnecting the opposite sub. the difference over calibrating both at once is incredible. from EDAUDIO (this is solid sub cal info) and can be applied to all. "There are a few major things that with a little bit of tuning can change the sound of a speaker roughly 2billion percent. It's important to realize it will take a little bit of tuning to customize the sound of the cabinet for your room and listening desires.
They do not come out of the box. Get plugged and automatically sound perfect. You'll want to spend a little time getting to know, and love, your new eD subwoofer. Concentrate heavily on level settings and crossover settings.
1. 'level' control is not always volume control. Contrary to typical design our level control on our amplifiers is intended as a level match. This means when set too high it's very easy to introduce clipping.
Typically if you listen loud most of the time with a great deal of input voltage you'll find that you'll need to keep the level low so at high output you don't have issues with clipping (which is unavoidable with most receivers). If you know your going to listen loudly you should set your reference at a non-clipped level @ your peak output level.
If you listen at low volumes realistically then your level could be set a little higher due to the fact that your not turning it up to high.
Your level setting should be set at your max listening level so that there is no clipping issues. To do this the following questions should be asked.
A. Are you using the Subwoofer output boost. Most receivers have 0-6/12 dB of boost on the subwoofer output. Will you be using this function to increase or cut bass as desired?
If so. When you set your levels turn it up all the way. If it's not clipping at full tilt, it won't be clipping at lower output levels.
The level control is meant to be set once to match the receiver output voltage. Once you set it at your highest listening level not to clip you'll find that you'll be able to control through your level settings on the receiver.
Clipping can typically be heard very quickly and audibly when it occurs as a unsavory crinkling sound. Please be aware this is not the speaker or amplifier failing but both reproducing a signal issue that needs to be corrected by level settings.
2. Your crossover really should not be set any higher than 60-70Hz.
For best integration we suggest a 50-60Hz crossover point. When you go up any higher than that typically your going to experience a very very boomy integration. Basically a odd.
In our listening room we use a 40-50Hz point 90% of the time for movies. For music occasionally it's raised depending on the customers needs.
Turning the crossover up and down will significantly change the sound of the subwoofer.
If the subwoofer crossover is turned up too high you can typically tell this by audibly noticing a bloated or muddy sound at all volumes. You'll also likely begin to overdrive the speaker at higher output due to the speaker being asked to play a 3-4 octave range.
It is important for the durability of the driver but more importantly for your listening enjoyment to select the correct crossover point for you.
3. When you set your levels please also do this at a lower frequency. I'd suggest 20-30Hz. Lower frequencies are MUCH harder on electrical equipment than higher frequencies so if your levels are off when your watching a movie and have a 10-15Hz drop you can very likely clip the bajesus out of the amplifier. This is going to sound very much like dog turds to your ears and isn't good for the equipment.
If everything sounds fine until you see a huge explosion scene and then you hear your subwoofer go crazy in the corner and sound like it's a dieing 100lb cat. You know your likely experience clipping at low frequencies and the level should be compensated for that.
We've shipped a few hundred HT subwoofers and to be honest 95% of our tech / support time is concentrate on these 3 items."
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Post by souless on Oct 15, 2010 12:31:37 GMT -5
WOW!!! I took your advice and my sub problems have magically fixed themselves. Ive been in this hobby for years and for years my sub has alway been set to 90-100hz crossover and always seemed out of place. Just as you said, I would try changing the volume level without much luck. I always thought "im stupid" lol that I wanted the crossover set higher to take the HZ from my fronts and place them in the sub allowing my speakers to work less as hard. As soon as I turned the sub HZ down to 50-60. WOW, night and day.. This really should be a sticky. I wonder how many others have their subs set incorrectly. Thank you soooo much..
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Post by zetec on Oct 15, 2010 16:51:27 GMT -5
Question: currently I have a Denon 3808CI receiver that only allows me to set the sub as low as 80hz. I have my sub in bypass mode to allow the AVR to controller the cross over. Should I use the subs internal control to manually set it to 50-60hz?If so what should I set my AVR cross over to?
My sub does have customizable parametric EQ to which you can select narrow,normal or wide and can adjust the frequency sweep +-6. I currently have my eq set from 60 - 80hz to -4 to try and reduce that part of the band. Do you think doing this will give about the same results?
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Post by jimmyjames on Oct 16, 2010 7:25:20 GMT -5
can you repost the diagrams, I could not open them, thanks
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Post by eljaycanuck on Oct 16, 2010 7:42:13 GMT -5
Question: currently I have a Denon 3808CI receiver that only allows me to set the sub as low as 80hz. I have my sub in bypass mode to allow the AVR to controller the cross over. Should I use the subs internal control to manually set it to 50-60hz? 80Hz is the generally recommended crossover setting. Going lower is only a good idea if your speakers can handle frequencies below 80Hz, and can do so effectively. Placement within a room will also affect integration and degree of boominess. In the front left corner of my room - the spot which appears to offer max room gain - my sub is "localize-able" even at 60Hz. However, when placed between my center channel and my right front speaker (or even between the center and left front speaker), the sub integrates seamlessly (and with a negligible reduction in SPL) even at 80Hz.
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Post by geebo on Oct 16, 2010 9:37:16 GMT -5
my experiences on calibrating duals: "There are a few major things that with a little bit of tuning can change the sound of a speaker roughly 2billion percent.
If I've told you once, I've told you 16 trillion times: Don't exaggerate. ;D
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