Well yes, this is Electricity 101. But it usually is irrelevant in practice if one uses the supplied and perfectly adequate power cord and plugs in into the mains socket.
Husband & Wife
- Thread starter heliumflight
- Start date
Well yes, this is Electricity 101. But it usually is irrelevant in practice if one uses the supplied and perfectly adequate power cord and plugs in into the mains socket.
T
tiger0691
Guest
I will show you how to find out the polarity of power cables.
Wait for an hours please.
If using a two pin plug the simplest way to see if it matters is to insert the plug into the socket the other way around
. In a few rare cases, the sound quality improves - or deteriorates badly in one position - often it doesn't make any difference.PS: I am not an engineer, so I would be happy to understand why in some cases this happens - and also why in many cases it doesn't make any difference.
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T
tiger0691
Guest
If using a two pin plug the simplest way to see if it matters is to insert the plug into the socket the other way around
PS: I am not an engineer, so I would be happy to understand why in some cases this happens - and also why in many cases it doesn't make any difference.
This is how I set the polarity of Power Cable.
Bring multi tester.
Set on A/C Voltage check.
And check the leaking voltage between cabinet and earth.
Testing Obeject - PCM 1794 DAC with non-earth(2 pins) power cable
Wrong Polarity, It shows cabinet-earth : 40V leaking
Wright Polarity showing cabinet-earth : 2-3V leaking
If you set the polarity like this from source-pre amp-power amp.......
It brings new world to your system.
Cheer!
Chang
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heliumflight
Well-Known Member
I want to know in their relation with "Husband & Wife", is it compatible to add 2 active TL subs for stereo listening?
In my home getting and placing one sub itself is a huge challenge and you are asking for two. A lot depends upon how you wish to place them and integrate them with your main speakers. Such subwoofers will require continuous variable phase control to get them integrated to mains and room.
In a single sub solution the left and right signals are added and later filtered before it gets fed to the power amp. Low frequency below 100Hz anyway don't have directional cues and hence theoretically you can have one sub for both the channels. This will also prevent cancellation of common frequencies between subs that are out of phase. Two subs are advised only for huge rooms that allow freedom of placements and where you can use bass traps to control booming and room interactions. You will also probably need some kind of measuring tool like REW to locate the best position and tuning for your sub.
My 2 paise.
I
In a single sub solution the left and right signals are added and later filtered before it gets fed to the power amp. Low frequency below 100Hz anyway don't have directional cues and hence theoretically you can have one sub for both the channels. This will also prevent cancellation of common frequencies between subs that are out of phase. Two subs are advised only for huge rooms that allow freedom of placements and where you can use bass traps to control booming and room interactions. You will also probably need some kind of measuring tool like REW to locate the best position and tuning for your sub.
My 2 paise.
I
elangoas
Well-Known Member
I use two TL subs + satellites with an AVR for stereo listening..
heliumflight
Well-Known Member
Can you share a pic of your rig?
HiFi: Asus Xonar STX > JRiver > Nad 2240PE > AR2ax Speakers
elangoas
Well-Known Member
Plz excuse the poor quality of mobile pic in low light..The subs are in the front corners of the room..
Subwoofer -Taga Harmony platinum SW 10 v2
Satellite - Sonodyne Avant LCR 250..
AVR -Denon x3300..
pranjandas
Active Member
@elangoas: The two subs Taga SW 10 V.2 look like they have been laid down and made ceiling firing
elangoas
Well-Known Member
@elangoas: The two subs Taga SW 10 V.2 look like they have been laid down and made ceiling firing
hyeah: Will post a better & clear pic tomorrow..
heliumflight
Well-Known Member
Plz excuse the poor quality of mobile pic in low light..The subs are in the front corners of the room..
Subwoofer -Taga Harmony platinum SW 10 v2
Satellite - Sonodyne Avant LCR 250..
AVR -Denon x3300..
Husband & Wife with 2 children
marsilians
Well-Known Member
Actually 2 subs are better than one to create accurate bass extensions and also nullify boominess. Unfortunately in most setups, it becomes impractical due to space and cost consideration. Lots of info on the net about the benefits.
In the above pic, it would be interesting to see if bass response improved if the subs we're isolated with rubber feet.
In the above pic, it would be interesting to see if bass response improved if the subs we're isolated with rubber feet.
elangoas
Well-Known Member
Husband & Wife with 2 children
Good one
hyeah:If you are referring to the pic that i had posted, the subs are placed on floor mat to avoid the spikes contact with the floor..
sound_cycle
Well-Known Member
Could you please help me understand. Are you suggesting that room boom issues could be nullified by having two multiple subs ?
gik linkie
linkie said:
@elangoas: Cannot make out from your pic. Do you have any bass trapping or treatment in your room ?
ciao
gr
elangoas
Well-Known Member
This was discussed a while back on drkrack thread - http://www.hifivision.com/av-enhanc...oom-acoustics-diy-ready-use-9.html#post720479
Nope.. Yet to.. But sooner..
sound_cycle
Well-Known Member
I must have missed it. where ?
I've had the pleasure of several listening sessions at his place and definitely do not recollect him using two subs to defeat his room - he had room treatment in place.
It will make a rather big difference to your listening pleasure when you do. If you are chasing tuneful bass, hurry !
ciao
gr
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elangoas
Well-Known Member
Was referring to FM Manoj.p post on the thread on the benefits of using dual subs..
Nope..Not in his room..
Sure heading there. Tried to measure the sub response with Adusyeey Mic, but didn't get the REW settings right..
Will try this weekend one more time..
marsilians
Well-Known Member
Dual subs wont necessarily get you greater SPL but it helps significantly in smoothing the frequency response which is felt as being less distorted in the sound effects. HOWEVER, typical measurements will definitely support this claim especially for HT application when the decay is much longer. Unfortunately the only way to confirm this is with 2 subs (typically recommended to be same ones). There is some work to getting to this point as it will require a fair bit of SPL measurements and adjustments. Most common placement of subs are one on top of each other or equidistant from the center channel. I have felt the effects of these 2 configs.
A third one which I have personally not seen is to put them in a 'L' formation, eg., one sub behind center channel and second one perpendicular to it midway on either right or left wall.
Lots of discussion on this in usual places eg., avsforum etc.
A third one which I have personally not seen is to put them in a 'L' formation, eg., one sub behind center channel and second one perpendicular to it midway on either right or left wall.
Lots of discussion on this in usual places eg., avsforum etc.
elangoas
Well-Known Member
Subs on top on each other..Interesting..But any idea on what benefit does it have over the other placements ?
One more interesting placement..
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