What can power what???

[b0mbrman 10+ year member]

So after all this u still gona disagree with me that its hard to power a whole system with 1 amp?

Nope, it's easy. 100w comps get 100w from front channels, 600w RMS sub gets 300w from bridged rears.
All with only one fuse, one power wire, one ground wire and one amp-rack.

Couldn't be easier.

 

[Bavarian3 10+ year member]

Nope, it's easy. 100w comps get 100w from front channels, 600w RMS sub gets 300w from bridged rears.
All with only one fuse, one power wire, one ground wire and one amp-rack.

Couldn't be easier.

which continues my second argument. Why would u want to give a 600rms sub 300 watts.

And in that case yes its easy. but what if u want 2 600rms subs? Catch my drift. im sure u already have.

 

[azngurlbaybee 10+ year member]

Uh oh...Don't tell me I have to come back in here and regulate

 

[azngurlbaybee 10+ year member]

which continues my second argument. Why would u want to give a 600rms sub 300 watts.

And in that case yes its easy. but what if u want 2 600rms subs? Catch my drift. im sure u already have.

Let's focus this time.
Start out with one sub and front comps and say you got lucky and ended up with a flat response curve up to 110 dB across the audible frequency spectrum with the comps covering 100 Hz on up and the sub covering 100 Hz on down.

Now here's the tricky part:

If you added a second sub, in order to keep that flat response 100 Hz on down then you'd need less power, not more because the subwoofer system is now more sensitive than it was before.

Now, to quote the Brahma manual:

Just because a driver is rated at 1600W does not mean it NEEDS 1600W, or that it can handle that 1600W in your application! How much power do you need? In many situations, 200-400W is plenty. Do not over-estimate what you need! ... Once again: a power rating is just that – a power RATING. It is NOT a requirement, or recommendation of power! You only need as much as your application requires and can safely handle; more power is the quickest way to destroying your subwoofer, and definitely constitutesabuse.

 

[b0mbrman 10+ year member]

I drawed something in paintbrush you might understand. I call it Freq vs. Max volume

[Edit] Dang...not fast enough

 

[b0mbrman 10+ year member]

which continues my second argument. Why would u want to give a 600rms sub 300 watts.

Actually, let me ask you this question. Why would you want to give a 600rms sub 300 watts?
Take the Brahma 15 for example--1600rms, 87.6 dB. Why would you want to give it 1600 watts?

Let's assume that you still have those 100w RMS front speakers.

 

[Bavarian3 10+ year member]

Let's focus this time.
Start out with one sub and front comps and say you got lucky and ended up with a flat response curve up to 110 dB across the audible frequency spectrum with the comps covering 100 Hz on up and the sub covering 100 Hz on down.

Now here's the tricky part:

If you added a second sub, in order to keep that flat response 100 Hz on down then you'd need less power, not more because the subwoofer system is now more sensitive than it was before.

Now, to quote the Brahma manual:

Lets focus this time....

ill say once again, i never said u NEED to fulfill the subs rms.

 

[Bavarian3 10+ year member]

Actually, let me ask you this question. Why would you want to give a 600rms sub 300 watts?
Take the Brahma 15 for example--1600rms, 87.6 dB. Why would you want to give it 1600 watts?

Let's assume that you still have those 100w RMS front speakers.

that made no sense.

anyways,

u guys keep tellin me about how u dont need to give a subs its full rms rating. I believe i already said i know this, as well as saying i never said u need to give a subs rms.

when i first got my SE's i used my JBL 1200 at 4 ohms for a couple months. so they were getting half theyr RMS. sounded great. got nice and loud........

ur guys arguments are about nonsense now, give it up, uve already gotten ur point across about responses curves and subs not needing theyr Rms. //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

 

[b0mbrman 10+ year member]

which continues my second argument. Why would u want to give a 600rms sub 300 watts.

//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
Hi there

 

[defiance 10+ year member]

Couple of quick pieces of info:

Everyone keeps saying how you must get an amp that can handle a reduced impedence - however, this is not true. A passive crossover network is (and this is of course, VERY simplified) simply a network of resistances that varies with frequency. For illustrtation, let's use a 4-way passive 24db/oct crossiver. Frequency points are 80, 800, and 8k. Just for simplicity. Now, these are connected to a sub, midbass, mid, and tweet - all 4 ohm. Now, the way this is going to work is, for example, if a 20hz wave is sent to the crossover, the resistance of the portion of the crossover supplying the sub will be very low - whereas both high-pass sections will be extremely high. The resulting paralleled ohm load (assuming the crossover network is built properly) will still be 4 ohms. The same holds similarly true across the frequency bands.

Another misunderstood portion of passive crossovers is resultant power. Everyone thinks that if you provide 400 watts to a 4-way crossover, each section will get 100 watts. This, however, is incorrect. In fact, for the same reasons listed above, whichever frequency band is playing will be sending the entire 400 watts. Well, I say entire - there is some significant portion of loss as a result of crossover resistance - however, it will be close. In that regard, passive crossover networks are actually significantly more efficient than active, since to match 1 4-way passively crossed over amp, you'd need 4 actives.

Why does everyone not do this, then?

Simple - everybody wants to boom - and that level of power to your average tweeter would release the majik smoke in no time! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Bavarian3 10+ year member]

//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
Hi there

good god dude. i give up with u.

//content.invisioncic.com/y282845/emoticons/banghead.gif.8606515f668c74f6de0281deb475b6fd.gif//content.invisioncic.com/y282845/emoticons/banghead.gif.8606515f668c74f6de0281deb475b6fd.gif//content.invisioncic.com/y282845/emoticons/banghead.gif.8606515f668c74f6de0281deb475b6fd.gif

WHERE THE HELL IN THAT QUOTE DOES IT SHOW ME SAYING "YOU NEED TO SEND A SUB IT'S FULL RMS"

 

[marleyskater420 5,000+ posts]

WHERE THE HELL IN THAT QUOTE DOES IT SHOW ME SAYING "YOU NEED TO SEND A SUB IT'S FULL RMS"

very true.very very true...you guys took something he said and twisted it a lil.

//content.invisioncic.com/y282845/emoticons/sick.gif.b1847c8dabbfeeddbcf1a78052249e10.gif

 

[b0mbrman 10+ year member]

very true.very very true...you guys took something he said and twisted it a lil. //content.invisioncic.com/y282845/emoticons/sick.gif.b1847c8dabbfeeddbcf1a78052249e10.gifHa ha...well I didn't have to twist it far //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Anyhow, if you wanna get technical, I can't find where I wrote "Capone said 'you need to send a sub its full rms'" //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

 

[Bavarian3 10+ year member]

Ha ha...well I didn't have to twist it far //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
Anyhow, if you wanna get technical, I can't find where I wrote "Capone said 'you need to send a sub its full rms'" //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

no see ur stupid. u didnt even twist it, u changed completely what i said. I asked u why u would want to send a 600rms sub 300 watts.

and u were the one who started all the technical ****. by trying to prove that its possible to use 1 amp for a whole system when all i said was that its hard.

your a tool, go home //content.invisioncic.com/y282845/emoticons/censored.gif.f9ad8e7c6db58c5530c5a0a20a3b5baf.gif

 

[marleyskater420 5,000+ posts]

no see ur stupid. u didnt even twist it, u changed completely what i said. I asked u why u would want to send a 600rms sub 300 watts.
and u were the one who started all the technical ****. by trying to prove that its possible to use 1 amp for a whole system when all i said was that its hard.

your a tool, go home //content.invisioncic.com/y282845/emoticons/censored.gif.f9ad8e7c6db58c5530c5a0a20a3b5baf.gif

true...u did ask why u would want to send 600rms sub 300rms...a simple "personal preference" answer could have done well..but then someone *cough*poohead*cough* had to go and change the entire thread into technical stuff that only smurt ppl git.to end the thread....yes,it IS possible to run everything off of 1 amp.simple..."so simpo.no skeiww involve ah-tall" AND NOW....do the hustle do-do-do da do-do-do-do-do do-do-do- da do-da do-do-do do-do-do da do- da do-do-do do-do-do da do-do-do-do-do do-do-do- da do-da do-do-do do-do-do da do- da do-do-do do-do-do da do-do-do-do-do do-do-do- da do-da do-do-do do-do-do da do- da do-do-do do-do-do da do-do-do-do-do do-do-do- da do-da do-do-do do-do-do da do- da do-do-do EVERYBODY SING ALONG!