Speakerplans.com Homepage
Forum Home Forum Home > Plans > Scoops
  New Posts New Posts RSS Feed - Sub Speaker lead lengths
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Sub Speaker lead lengths
 Post Reply Post Reply Page  12>
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
levyte357- View Drop Down
Old Croc
Old Croc
Avatar

Joined: 27 July 2012
Location: UK, South East
Status: Offline
Points: 2265 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Topic: Sub Speaker lead lengths
    Posted: 30 July 2012 at 11:34pm
May get bumpy here..

How many people here, routinely use sub speaker leads over 25M ?

Many argue nothing wrong with upto 25M of 2.5mm2 to each 8 ohm cab, as this is regular in clubs.

Two recent gigs couldn't put cabs where desired, as would require >25M leads, and I just "DON'T" like to extend them.

Want to hear general comments from the "Reggae & Roots/Scoop" crowd.


Edited by levyte357- - 31 July 2012 at 1:54pm
"You're Iron Man, and he kicked your ass, and took your sh*t off you !? Is that even possible !?"
Back to Top
luton_soundman View Drop Down
Old Croc
Old Croc
Avatar

Joined: 03 August 2010
Location: Bedfordshire
Status: Offline
Points: 3070 		Post Options Post Options   Thanks (0) Thanks(0)   Quote luton_soundman Quote  Post ReplyReply Direct Link To This Post Posted: 31 July 2012 at 12:31am
use 25m 4mm every month, no problems. set up in a very large venue recently and had to double up and use 50m 4mm, and to be honest there didnt seem to be anything lacking, few people from the forum were there, Marvin, BIG SHOW, etc. good pressure all around the room, especially at the other end of the hall. I've always been worried about using long lengths after reading different things, but after using 50m cable and sounding the way it did in a venue that big with massive high ceiling i'd say you have nothing to worry about. (power we used was 32a supply) 
Back to Top
levyte357- View Drop Down
Old Croc
Old Croc
Avatar

Joined: 27 July 2012
Location: UK, South East
Status: Offline
Points: 2265 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 31 July 2012 at 12:35am
Originally posted by luton_soundman luton_soundman wrote:

use 25m 4mm every month, no problems. set up in a very large venue recently and had to double up and use 50m 4mm, and to be honest there didnt seem to be anything lacking, few people from the forum were there, Marvin, BIG SHOW, etc. good pressure all around the room, especially at the other end of the hall. I've always been worried about using long lengths after reading different things, but after using 50m cable and sounding the way it did in a venue that big with massive high ceiling i'd say you have nothing to worry about. (power we used was 32a supply) 


Was that 2x cabs per 4mm pair, or 1x cab per 4mm pair ?
"You're Iron Man, and he kicked your ass, and took your sh*t off you !? Is that even possible !?"
Back to Top
luton_soundman View Drop Down
Old Croc
Old Croc
Avatar

Joined: 03 August 2010
Location: Bedfordshire
Status: Offline
Points: 3070 		Post Options Post Options   Thanks (0) Thanks(0)   Quote luton_soundman Quote  Post ReplyReply Direct Link To This Post Posted: 31 July 2012 at 12:47am
1 50m 4core run plugged into 2 scoops, and linked 2 more scoops in parallel using 2 short 1m lengths. 
Back to Top
levyte357- View Drop Down
Old Croc
Old Croc
Avatar

Joined: 27 July 2012
Location: UK, South East
Status: Offline
Points: 2265 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 31 July 2012 at 2:41am
Originally posted by luton_soundman luton_soundman wrote:

1 50m 4core run plugged into 2 scoops, and linked 2 more scoops in parallel using 2 short 1m lengths. 


Get your flame retardent jacket on, you'll need it when the PA inquisition starts in the morning.
"You're Iron Man, and he kicked your ass, and took your sh*t off you !? Is that even possible !?"
Back to Top
mykey- View Drop Down
Old Croc
Old Croc
Avatar

Joined: 03 March 2010
Location: ID/UK
Status: Offline
Points: 6113 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mykey- Quote  Post ReplyReply Direct Link To This Post Posted: 31 July 2012 at 8:15am
small amp rack behind each stack, leads as short as possible and 4mm core

25 meters should be the balanced signal cable going to you tower

I have some speaker cable length tables somewhere. I'll put them up.
Back to Top
mykey- View Drop Down
Old Croc
Old Croc
Avatar

Joined: 03 March 2010
Location: ID/UK
Status: Offline
Points: 6113 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mykey- Quote  Post ReplyReply Direct Link To This Post Posted: 31 July 2012 at 8:20am
Originally posted by luton_soundman luton_soundman wrote:

1 50m 4core run plugged into 2 scoops, and linked 2 more scoops in parallel using 2 short 1m lengths. 
That's a bit like having a garden hose pipe that has a diameter of 5cm, water is going to slowly pour out the end. Now make that hose 12mm in diameter with the same water pressureWink

12mm would be your short speaker leadThumbs Up 5cm your 50m leadEmbarrassed

no wonder you guys love 50,000 watt amplifiersLOL
Back to Top
mykey- View Drop Down
Old Croc
Old Croc
Avatar

Joined: 03 March 2010
Location: ID/UK
Status: Offline
Points: 6113 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mykey- Quote  Post ReplyReply Direct Link To This Post Posted: 31 July 2012 at 8:21am
Originally posted by levyte357- levyte357- wrote:

Originally posted by luton_soundman luton_soundman wrote:

1 50m 4core run plugged into 2 scoops, and linked 2 more scoops in parallel using 2 short 1m lengths. 


Get your flame retardent jacket on, you'll need it when the PA inquisition starts in the morning.





LOLLOLLOL
Back to Top
mykey- View Drop Down
Old Croc
Old Croc
Avatar

Joined: 03 March 2010
Location: ID/UK
Status: Offline
Points: 6113 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mykey- Quote  Post ReplyReply Direct Link To This Post Posted: 31 July 2012 at 8:22am
Don't worry Lev, he has a hose pipe now LOL
Back to Top
odc04r View Drop Down
Old Croc
Old Croc
Avatar

Joined: 12 July 2006
Location: Sarfampton
Status: Offline
Points: 2444 		Post Options Post Options   Thanks (0) Thanks(0)   Quote odc04r Quote  Post ReplyReply Direct Link To This Post Posted: 31 July 2012 at 9:41am
It's not exactly complicated, the maths is simple and then you need to adjust for heating effects as well if you are using silly thin cable.

You can predict exactly your losses and damping change at any frequency if you know the impedance characteristic of your enclosures. Whether or not you can hear that is another matter.
Back to Top
Dub Specialist View Drop Down
Old Croc
Old Croc
Avatar

Joined: 30 December 2011
Location: Smethwick
Status: Offline
Points: 2707 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Quote  Post ReplyReply Direct Link To This Post Posted: 31 July 2012 at 11:41am
sorry to hi-jack the thread a bit..........but can anyone explain to me what is best for 2core speaker cable 2.5mm or 4mm...in terms of power amp "Power and Lengths"

only talking about sub-duty is 4mm cable overkill for lets say 6m-10m max cable lengths or can you get away with 2.5mm?? or is it best to use 4mm cable??? at said given lengths

example power amps Crest Ca18, 9001, Crown vz5000, Qsc 5050......5k range amps ect.....

thanks repleys much apprecited.......




Edited by Dub Specialist - 31 July 2012 at 12:00pm
treat all creation with respect. For music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion! MUSIC IS LIFE
Back to Top
levyte357- View Drop Down
Old Croc
Old Croc
Avatar

Joined: 27 July 2012
Location: UK, South East
Status: Offline
Points: 2265 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 31 July 2012 at 3:02pm
Do some nightclubs have long speaker cables?
"You're Iron Man, and he kicked your ass, and took your sh*t off you !? Is that even possible !?"
Back to Top
 Post Reply Post Reply Page  12>
  Share Topic   

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.156 seconds.
speakerplans@redhotmail.net