what amp to run a Brahama
rilla dope
Joined: Jun 2002
Posts: 1,152
OT a little, but my car is in the shop being built on and I haven't run my new amps at all, but I'll be pushing 1000rms to 2 10s and they can handle it, but I wonder what the appreciable difference will be between that and the 360rms I had to them before. Any thoughts?
V
I thought the Brahmas took serious power? Won't something more substantial be better on a sub of that quality?
V
I thought the Brahmas took serious power? Won't something more substantial be better on a sub of that quality?
Guest
Posts: n/a
While the thermal limits of a sub are nice to know, the mechanical limit is a factor that must be considered when building a box. The revolution is capable of about 1600 watts into the one ohm load of a parallel wired brahma. But any speaker may fail that is put into the wrong box or otherwise mistreated. I can't remember if it takes double the power to achieve a 3 dB increase in output, or if it takes ten times the power. The quality of the power and the box design are more important.
Originally posted by jmax
I can't remember if it takes double the power to achieve a 3 dB increase in output, or if it takes ten times the power. The quality of the power and the box design are more important.
I can't remember if it takes double the power to achieve a 3 dB increase in output, or if it takes ten times the power. The quality of the power and the box design are more important.
Kevin.
Senior Member
Joined: Aug 2002
Posts: 719
What you need to consider is how much power you will need to get the Brahma to it's max excursion. This is not only a function of power but also of the enclosure. If you are using a sealed enclosure it will require much more power to reach this point, simply because you are then working against the air in the box, than it would a vented enclosure. In a vented enclosure you might be able to reach max excursion with less than 1000W. Any more juice than what is required to reach Xmax will actually cause mechanical damage to the driver.
Sub power ratings are based on the thermal capacity of the voice coil rather than the mechanical limits of the driver. The Brahma can handle lots of power but it is actually quite efficient and requires less power than a W7, for example.
Sub power ratings are based on the thermal capacity of the voice coil rather than the mechanical limits of the driver. The Brahma can handle lots of power but it is actually quite efficient and requires less power than a W7, for example.
Senior Member
Joined: Jul 2001
Posts: 482
Originally posted by Maxima Dan
What you need to consider is how much power you will need to get the Brahma to it's max excursion. This is not only a function of power but also of the enclosure. If you are using a sealed enclosure it will require much more power to reach this point, simply because you are then working against the air in the box, than it would a vented enclosure. In a vented enclosure you might be able to reach max excursion with less than 1000W. Any more juice than what is required to reach Xmax will actually cause mechanical damage to the driver.
Sub power ratings are based on the thermal capacity of the voice coil rather than the mechanical limits of the driver. The Brahma can handle lots of power but it is actually quite efficient and requires less power than a W7, for example.
What you need to consider is how much power you will need to get the Brahma to it's max excursion. This is not only a function of power but also of the enclosure. If you are using a sealed enclosure it will require much more power to reach this point, simply because you are then working against the air in the box, than it would a vented enclosure. In a vented enclosure you might be able to reach max excursion with less than 1000W. Any more juice than what is required to reach Xmax will actually cause mechanical damage to the driver.
Sub power ratings are based on the thermal capacity of the voice coil rather than the mechanical limits of the driver. The Brahma can handle lots of power but it is actually quite efficient and requires less power than a W7, for example.
On a 15" brahma, you can push it to xmax in a .707 enclosure (just under 3 ft3) with as little as 400 watts.
As far as power required to reach xmax: above tuning frequency, the ported box takes as much OR MORE power to reach xmax, because as you approach the tuning frequency, the port damps the movement, and increases the impedance. Below tuning frequency, the box is progressively more and more like free-air...but I suggest not playing frequencies below tuning, unless you have a subsonic filter, or know exactly what you're doing. I have taken my 15 brahma, and gotten it to full xSUS with less than 150 watts...but it was free-air with a 20 hz tone (break in
)And for the over powering 'thing'...I have run almost 3x the rated rms power to a JL 12w3, and it NEVER bottomed, or destroyed it...never melted the coil or anything, b/c I know how to treat equipment. More power DOES NOT equal destruction.
Eric
Thread Starter
Senior Member
Joined: May 2002
Posts: 345
im running it in a sealed box....well not me, im hooking my friend up with this system...2 gauge wire...i think the revolution amp from ampman. and a 15" brahama( we are now talking about only a 12") Is the revolution a good choice in amp...
Guest
Posts: n/a
2 gauge may be able to barely carry that much current. I would use larger for that amp. Especially considering that an amp will be needed for the front speakers if you want to hear them. The brahma moves a lot of air. Correction, a whole lot of air. It is a good amp capable of pushing the brahma to xmax in any enclosure. So make sure you set all the levels properly and take your time with the install. Many, many have blown their brahma's with careless installation.
Thread
Thread Starter
Forum
Replies
Last Post
JoshG
4th Generation Maxima (1995-1999)
51
Sep 21, 2015 10:41 PM
popdedop
7th Generation Maxima (2009-2015)
6
Sep 11, 2015 11:17 AM