What is the minimum lenght of wire when splitting speaker?
What is the minimum lenght of wire when splitting speaker?
Please advice me the typical and minimum length of cables when splitting tops and subs for DJ and for Live Band use. I usually split tops but not subs but it is nice to know. Thanks
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Re: What is the minimum lenght of wire when splitting speaker?
Not sure just what you mean......philrev wrote:Please advice me the typical and minimum length of cables when splitting tops and subs for DJ and for Live Band use. I usually split tops but not subs but it is nice to know. Thanks
Are you talking about daisy-chaining two tops or two subs together?
6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
Re: What is the minimum lenght of wire when splitting speaker?
I am not daisy chaining...as of now i have only 2tops and 4 subs vplated. in the future maybe.. I plan to buy a new cable to replace my temporary short and and limited cable. I forgot the minimum separation of speaker when splitting top and sub into left right stereo. I dont know what is the common lenght of cable for dj and for live band? thanks..sorry i edited this statement several times.
Last edited by philrev on Sat Mar 19, 2016 7:06 pm, edited 2 times in total.
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Re: What is the minimum lenght of wire when splitting speaker?
Still don't understand what the question is.....philrev wrote:I am not daisy chaining...as of now i have only 2tops. in the future maybe..
What do you mean by minimum cable length?
6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
Re: What is the minimum lenght of wire when splitting speaker?
Minimum cable lenght from speaker to amp to avoid issues of cancellation on certain frequency between left and right speaker.
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Re: What is the minimum lenght of wire when splitting speaker?
Even if your system response goes all the way to 20 kHz, you should be okay with anything under five kilometers......
https://en.wikipedia.org/wiki/Speed_of_electricity
https://en.wikipedia.org/wiki/Speed_of_electricity
BFM rig:
6 OT12
4 T48
4 WH8
Other:
56 box Electrotec LabQ rig
Way too many cables
6 OT12
4 T48
4 WH8
Other:
56 box Electrotec LabQ rig
Way too many cables
Re: What is the minimum lenght of wire when splitting speaker?
David Raehn wrote:Even if your system response goes all the way to 20 kHz, you should be okay with anything under five kilometers......
https://en.wikipedia.org/wiki/Speed_of_electricity
Spot on accurate though.
4xOT12s, 2xT39s@22", TTLS@18", 2xT60@18"
Re: What is the minimum lenght of wire when splitting speaker?
Ideal lenght of cable will be short as possible to minimize loss of signal and cost, but there are times you need more on other venues. In real world what is the most common length of cable use here.
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Re: What is the minimum lenght of wire when splitting speaker?
Around here operators usually have 25', 50', and for the rare outdoor occasion 100' lengths in their inventory.
Built:
17" width 10" driver Autotuba
2 x 29" width dual Lab12 Tuba60
6 x DR250 2510/asd1001
In progress:
2 x DR250 2510/asd1001
For best results, point the loud end of the array towards the audience
17" width 10" driver Autotuba
2 x 29" width dual Lab12 Tuba60
6 x DR250 2510/asd1001
In progress:
2 x DR250 2510/asd1001
For best results, point the loud end of the array towards the audience
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Re: What is the minimum lenght of wire when splitting speaker?
To answer you properly, please include the sub model you are talking about.
The reason we and you need to know is that the distance of separation required is frequency dependant.
For example:
T39's require a separation distance of 56 feet if you're splitting a stack, in order to avoid cancellations up to 40Hz.
Keeping cable lengths as short as possible, in that situation, would see you ideally putting the sub amp midway between each separated side, giving you cable runs of just over 25 feet. That minimises loss to the cabs (though that loss may only be 1dB).
Signal cable has much less loss than speaker cable, so it's best to have long signal leads than long speaker leads.
As far as tops go, the problem is greatly reduced, because the frequencies are above say 100Hz...
edit:
As far as speaker cable gauge goes, the longer the cable, the lower the gauge it should be.
25 foot long 12G cables should be fine.
You might want to think about 10G cables for anything longer than that...
The reason we and you need to know is that the distance of separation required is frequency dependant.
For example:
T39's require a separation distance of 56 feet if you're splitting a stack, in order to avoid cancellations up to 40Hz.
Keeping cable lengths as short as possible, in that situation, would see you ideally putting the sub amp midway between each separated side, giving you cable runs of just over 25 feet. That minimises loss to the cabs (though that loss may only be 1dB).
Signal cable has much less loss than speaker cable, so it's best to have long signal leads than long speaker leads.
As far as tops go, the problem is greatly reduced, because the frequencies are above say 100Hz...
edit:
As far as speaker cable gauge goes, the longer the cable, the lower the gauge it should be.
25 foot long 12G cables should be fine.
You might want to think about 10G cables for anything longer than that...
Last edited by Grant Bunter on Sat Mar 19, 2016 11:01 pm, edited 1 time in total.
Built:
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...
- SoundInMotionDJ
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Re: What is the minimum lenght of wire when splitting speaker?
The general rule of thumb for point sources of sound is to keep the cabinets closer than 1/4 wavelength (use the high end frequency), or further than 2 wavelengths (use the low end frequency).
For subs, the separation should be 56ft (@40Hz).
For tops, the separation should be 22ft (@100Hz).
For subs, the separation should be 56ft (@40Hz).
For tops, the separation should be 22ft (@100Hz).
10 T39S + 10 DR200 + 1 T48
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Re: What is the minimum lenght of wire when splitting speaker?
I use the shortest cable that will get to the speaker. Thus, I have everything from 7 footers to 50 footers......speakers placement is determined as described above.
6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
Re: What is the minimum lenght of wire when splitting speaker?
This may be of help....
http://www.electrovoice.com/cableloss.php
http://www.electrovoice.com/cableloss.php
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
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Re: What is the minimum lenght of wire when splitting speaker?
It would be if it actually told you what the result of a given insertion loss would be, but it doesn't. This does:J_Dunavin wrote:This may be of help....
http://www.electrovoice.com/cableloss.php
http://www.bcae1.com/images/swfs/speake ... istant.swf
Re: What is the minimum lenght of wire when splitting speaker?
Do many of you guys run 10ga or more on runs > 25 feet? Where could one find ready made cables this size?
2 DR250s, 2 27" Lab15 T-60s, 2 30" Neo Titan 39s, 1 Autotuba...and looking for more!