MA5050 or iNuke for LMS5400 - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 21 Old 05-18-2011, 03:18 PM - Thread Starter
Member
 
monkatraz's Avatar
 
Join Date: Feb 2008
Posts: 54
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I have a LMS5400 in a 4cuft sealed box which I originally designed with a 3000 watt amp in mind (iNuke). However instead of waiting for the Behringer amp to be available I was thinking of buying a used Marathon 5050. In winisd with 5000w in the 4cuft box the driver starts to excede max excursion. Is this accurate or can the LMS5400 handle the 5000w. Keep in mind I will be pushing whatever amp I get to clipping often. Another option is to high pass the amp at 10-15hz but this seems counter productive in a seald setup. What do you guys think?
monkatraz is offline  
Sponsored Links
Advertisement
 
post #2 of 21 Old 05-18-2011, 03:24 PM
Senior Member
 
Avgass's Avatar
 
Join Date: Aug 2010
Location: New Zealand
Posts: 378
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 36
I think - don't push you amp to clipping often. Sure, test it's limit but why would you set out to abuse your gear like that on a regular basis? I would get the Marathon and be sensible with it.
Avgass is offline  
post #3 of 21 Old 05-18-2011, 03:34 PM
AVS Special Member
 
N8DOGG's Avatar
 
Join Date: Dec 2003
Location: Canada
Posts: 5,737
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 143 Post(s)
Liked: 303
marathon and turn down the gain.

Blasting brown notes for 10 years and counting!

N8DOGG is offline  
post #4 of 21 Old 05-18-2011, 03:48 PM
AVS Special Member
 
notnyt's Avatar
 
Join Date: Dec 2008
Location: Long Island, NY
Posts: 4,317
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 190 Post(s)
Liked: 401
Nobody has an inuke yet. A marathon will sufficiently drive a 5400. Going by behringers inflated numbers, you'd want the 6000 anyway.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
notnyt is offline  
post #5 of 21 Old 05-18-2011, 04:15 PM
Advanced Member
 
TJHUB's Avatar
 
Join Date: Feb 2008
Location: Wisconsin
Posts: 607
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
Quote:
Originally Posted by notnyt View Post
Nobody has an inuke yet. A marathon will sufficiently drive a 5400. Going by behringers inflated numbers, you'd want the 6000 anyway.
It is my understanding that the 6000 is not bridgeable. I could be wrong, but the 6000 looks to be 2 internally bridged 3000's in one box.
TJHUB is offline  
post #6 of 21 Old 05-18-2011, 04:17 PM
AVS Special Member
 
notnyt's Avatar
 
Join Date: Dec 2008
Location: Long Island, NY
Posts: 4,317
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 190 Post(s)
Liked: 401
Quote:
Originally Posted by TJHUB View Post
It is my understanding that the 6000 is not bridgeable. I could be wrong, but the 6000 looks to be 2 internally bridged 3000's in one box.
That's correct.

I looked at these before going with LG clones. Clones were definitely the better choice However, an MA-5050 can easily power an lms 5400 in 4 ohm bridged mode.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
notnyt is offline  
post #7 of 21 Old 05-18-2011, 06:16 PM - Thread Starter
Member
 
monkatraz's Avatar
 
Join Date: Feb 2008
Posts: 54
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Im afraid of over exursion, will I damage my driver with the marathon?
monkatraz is offline  
post #8 of 21 Old 05-18-2011, 07:22 PM
AVS Special Member
 
notnyt's Avatar
 
Join Date: Dec 2008
Location: Long Island, NY
Posts: 4,317
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 190 Post(s)
Liked: 401
You shouldn't unless you push it too hard. It has these lovely knobs on the front that control gain


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
notnyt is offline  
post #9 of 21 Old 05-18-2011, 10:15 PM
Advanced Member
 
yelnatsch517's Avatar
 
Join Date: Nov 2006
Location: Los Angeles, CA
Posts: 980
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 14
Anyone know how much the Marathon can put out at 5Hz? Quick model in WinISD shows the LMS 5400 can take 4000W from an amp if a 1st order HPF is applied at 4Hz in a 3.5ft^3 box.
yelnatsch517 is offline  
post #10 of 21 Old 05-19-2011, 01:43 AM
AVS Special Member
 
notnyt's Avatar
 
Join Date: Dec 2008
Location: Long Island, NY
Posts: 4,317
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 190 Post(s)
Liked: 401
Bosso has said they have a rolloff at 5hz but are pretty flat till there. I've run sine waves through them at 10hz and they have used all available power at the outlet.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
notnyt is offline  
post #11 of 21 Old 05-19-2011, 05:37 AM
AVS Special Member
 
exojam's Avatar
 
Join Date: Dec 2004
Location: MA
Posts: 2,551
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 27
NYT,

My understanding of the gain controls on the front are only for the incoming voltage and will not effect the output "gain" of the amp. In looking at the sparse manual, I do not even see what gain this amp has.

Looking at my QSC GX5 manual, it states "voltage gain at 8 ohms=34.4db". There is nothing like that in the Marathon manual unless I missed it.

James
exojam is offline  
post #12 of 21 Old 05-19-2011, 06:29 AM
AVS Addicted Member
 
penngray's Avatar
 
Join Date: Feb 2006
Location: Florida
Posts: 26,779
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 30
Quote:
Originally Posted by monkatraz View Post
Im afraid of over exursion, will I damage my driver with the marathon?
Your LMS5400 is in a 4cuft sealed box so that size limits the LMS5400 excursion already. Of course if you start boosting the low end then you might hit Xmax.

It is not "open-minded" to reject knowledge - Bob Lee
penngray is offline  
post #13 of 21 Old 05-19-2011, 09:42 AM
AVS Special Member
 
Warpdrv's Avatar
 
Join Date: Oct 2005
Location: Wisconsin
Posts: 7,350
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 15
Even if it hits 2000w / channel your only missing 3db or less headroom per driver.

I'm all for over the top everything, but not everyone needs that.

I know for TJHUB's setup - even the 1400w per channel is enough for his needs and has a good amount of headroom.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Warpdrv is offline  
post #14 of 21 Old 05-19-2011, 11:35 AM - Thread Starter
Member
 
monkatraz's Avatar
 
Join Date: Feb 2008
Posts: 54
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I want to get as much out of the lms5400 as I can because I am in a verry large room 10,000cuft with only this 1 driver and I will not be buying another one due to space restrictions. Hey Warpov I know you have 1 ma5050 bridged per driver, have you ever bottomed the driver when puching your system?
monkatraz is offline  
post #15 of 21 Old 05-19-2011, 01:23 PM
AVS Special Member
 
Warpdrv's Avatar
 
Join Date: Oct 2005
Location: Wisconsin
Posts: 7,350
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 15
Quote:
Originally Posted by monkatraz View Post

I want to get as much out of the lms5400 as I can because I am in a verry large room 10,000cuft with only this 1 driver and I will not be buying another one due to space restrictions. Hey Warpov I know you have 1 ma5050 bridged per driver, have you ever bottomed the driver when puching your system?


I don't have MA5050.

I have 6 Crest 8002's at 4000w per driver, and yes with these amps you can push the drivers into bottoming, especially if you are not paying attention to your gain structure and you start to clip....

I'm not sure if the MA5050's hit stated specs of output, but I'm sure the 8002's are much closer to rated specs... These things are beasts...

That room size is very close to mine, and I can in all honesty state that one sealed is not nearly enough, I would get the PR's for that build if it were me....


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Warpdrv is offline  
post #16 of 21 Old 05-19-2011, 02:54 PM
AVS Addicted Member
 
noah katz's Avatar
 
Join Date: Apr 1999
Location: Mountain View, CA USA
Posts: 20,507
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 201 Post(s)
Liked: 153
Quote:
Originally Posted by monkatraz View Post

...I am in a verry large room 10,000cuft ...will not be buying another one due to space restrictions.

hmmm

Noah
noah katz is offline  
post #17 of 21 Old 05-19-2011, 03:02 PM - Thread Starter
Member
 
monkatraz's Avatar
 
Join Date: Feb 2008
Posts: 54
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
The sub is in a built in wall unit and only had space for 4 cuft, so no way I could use passive radiators and no way for a second sub. The room is only actually 10'x16' but open to the rest of the house. My goal was to fit the most potent sub I could into the 4 cuft space in my wall unit. I started with a pb12 plus, then to a mal-x and ep2500 sealed, now to lms5400, just trying to decide on the amp.
monkatraz is offline  
post #18 of 21 Old 05-19-2011, 03:03 PM
AVS Special Member
 
Warpdrv's Avatar
 
Join Date: Oct 2005
Location: Wisconsin
Posts: 7,350
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 15
Well then I say be all you can be !!!
:-)


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Warpdrv is offline  
post #19 of 21 Old 05-19-2011, 03:32 PM
AVS Special Member
 
notnyt's Avatar
 
Join Date: Dec 2008
Location: Long Island, NY
Posts: 4,317
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 190 Post(s)
Liked: 401
an ma-5050 will do well with it. I've tested the configuration before with a single lms5400 on an ma-5050 in 4 cubic feet.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
notnyt is offline  
post #20 of 21 Old 05-19-2011, 05:27 PM
AVS Special Member
 
Looneybomber's Avatar
 
Join Date: Sep 2006
Location: Lawrence, KS
Posts: 4,668
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked: 23
If you could find a pre/pro with a dynamic eq, you could set it to compress the lowest octaves as the volume increases. I have a behringer deq2496 and can do it, but the lowest frequency in its DEQ is 20hz.

YID DIY
Looneybomber is offline  
post #21 of 21 Old 05-19-2011, 05:29 PM - Thread Starter
Member
 
monkatraz's Avatar
 
Join Date: Feb 2008
Posts: 54
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I have a sms-1 and am pretty sure it wont do that. Cool feature though
monkatraz is offline  
Reply DIY Speakers and Subs

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off