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View Full Version : can the 165k2 handle 300 watts per side?


4fifteens
10-06-2000, 11:54 PM
?

4fifteens
10-07-2000, 12:26 AM
nobody knows...?

OldGeezer
10-07-2000, 02:27 AM
http://www.focal-america.com/

MrT
10-08-2000, 03:06 AM
300 watts!?!!

Well, lets just say that I'd be very impressed if they did... personally I think they'd sound better with much less power(think 100-150 watts per side).

Austin69me
10-08-2000, 03:09 AM
Yeah nothing more than 150, the last thing u want to do is burn those babys up

4fifteens
10-11-2000, 02:04 AM
I was told they could handle 200 very easily. I have the choice of giving them 275 rms, or around 70 rms. If I burn them out, I'd rather it be from high power and not distortion from too little power.

4fifteens
10-11-2000, 03:07 AM
What would you do? (anyone can answer.)

MrT
10-11-2000, 06:37 AM
jeez, to be honest i would either go with a 2-way component set giving them the 70 watts or (better), get a different amp for them 3-ways. basically if you choose to use that amp and those speakers, you're either going to underpower or overpower them which isn't good at all.

if you MUST have an answer though, i would always choose to underpower my speakers before overpowering them.

[This message has been edited by MrT (edited 10-11-2000).]

Jcg
10-11-2000, 11:54 AM
I totaly agree with Mr.T. 300 watt per side will make your ear's bleed to. I think 70 will be just fine. There should be no need to run them drivers at distortion. And if it does turn the gain down?

shootme5150
10-11-2000, 03:29 PM
good lord, you people are wussies! Give those Focals as much as you want. I'd dump 300 if I had it. Look, YOU CAN NEVER HAVE TOO MUCH POWER!!!! (as long as you're not an idiot) Okay, first, music is dynamic, so there is no way those things will be getting 300 watts continuous unless you are planning on running sine sweeps. Second, mids and highs typically need much less power than deep bass. Finally, if you actually know how to use a gain, you'll never overpower them. Like someone said, 300 watts each will be rather loud, so it's REAL doubtfull you are going to be giving them full power for long listening periods. I've got about 130 on mine right now and it's just not enough for me. Having the extra power will just give you plenty of head room, which is a good thing.

autofile
10-11-2000, 03:49 PM
Thank YOU shootme5150! You took the words right out of my mouth!

klatt1
10-11-2000, 04:10 PM
I'm with Shootme. I have 300W per side running to my 5 1/4" Diamond Hex components and love them! The more power, the better!

MrT
10-12-2000, 03:17 AM
but how much would those extra watts really benefit the speakers? like you said, they wouldn't be getting that much power continuously so why not get a smaller amp for them and save some money. Put that amp back for the subs if he already has it. personally i don't think i would ever risk blowing up such an expensive speaker by "pushing it"...

Viking
10-12-2000, 06:26 AM
Shootme: You said it!!! http://www.caraudioforum.com/cool.gif

MrT: It's a lot easier to break (burn) speakers with too little power than with too much power...
When you listen to music at insane levels, most of the time you have only 10-40W going to speakers but at some peaks it can be 200-300W.
If you have 300w amp, no problem, it can handle it.
If you have 70W, amp can't give you those 200-300W peaks, it starts clipping and compressing, speakers get 60-80W of clipped signal continuously... Hey where did the sound go.. sniff sniff, whats that smell... Uups, very expensive Focals are useless...
IMO a high quality 150-200Wrms amp would be great for those spakers. If you do know what you are doing, 300Wrms is even better.
You can be happy with 10Wrms also when you listen at modest levels and if you know what you are doing...

Viking
10-12-2000, 06:32 AM
One true story...
Few years ago I had DLS R6 (6.5" 2-way component kit, 60W continuous I think...)
Friend of mine had the same kit... I had 100Wrms going to it, he had 40Wrms... We both listened music at insane levels (I have grown up now... http://www.caraudioforum.com/wink.gif)...
He's midbass speakers burned in two weeks, mine were still sounding great when I sold them a year after...

shootme5150
10-12-2000, 03:12 PM
MrT, I don't know if I would recommend he buy an amp that big, I'd probably recommend about 200W just to save him some money. But he already has the amp and his choices are either 70W or 300W. 300W is most likely safer.

Besides - if homeboy has 4 15s, he's gonna need somehting to keep up with them!

[This message has been edited by shootme5150 (edited 10-12-2000).]

MrT
10-13-2000, 12:12 AM
OK, i was wrong. Didn't know that speakers could take that much power without killing them. Learn somethin' new everyday i guess...

nasty_totoro
10-14-2000, 03:47 AM
Speakers cant really take that muc power without killing them

if you turn up the gain till distortion hits (assuming you have a 200 watt amp and 70 watt spekers) the power will kill the speakers (either through melting the voice coil or causing the speaker to move beyond physical limitations)

its not too little power that causes a speaker to blow....its too much power generated from a square wave form....when your amplifier clips the square wave produces 2-3 times (i forget the exact equation) of power than the normal max

this causes the speaker to move beyond its capabilities

a speaker is killed when you say run 70 watts to a 70 watt spaeker and you clip the amp because the square wave outputs say 10-150 watts (more or less)

if your speaker is rated @ 3x the power you are puting into it....its unlikely that ANY amount of distortion will kill it

if u dont believe me...ask an audio engineer...or read the back FAQs of car audio mags

Mr Snuff
10-14-2000, 04:17 AM
i have 175 going to each channel of my 6.5 utopias. for the most part, they seem to be able to handle it very well, but i did have to turn the gains down a bit, because on some songs, it looked like the cone was going to shoot out of the basket (and sounded like it too). i think 300 is overkill, and you probably won't be able to use the amp to it's full potential without harming your speakers, but out of the two choices, i'd go with the 275.

flake
10-14-2000, 11:51 AM
like viking said a useless set of focal
3-ways would be a sad thing to see.
just put a 4ohm load to them and play with
your gains...i dont know your equipment but
set the bass and treble settings on your
HU to 0 and play the music at your loudest
listening pleasure and try to get it to
sound as close as u can get it to w/out
adjusting your HU settings..then adjust the
HU settings and you will be turning heads
in no time...but i'm sure u already know
this.

KMFDM
10-14-2000, 02:50 PM
Guys, any extra power you have is just headroom! YOU DONT HAVE TO USE IT ALL! God, i mean those speakers will be far too loud for you to stand before you give them full power. If you don't trust yourself, turn your volume all the way up and adjust the gain to the point of the loudest you ever play your system. That should be a relatively low setting depending on the voltage of your preouts.
Honestly, I don't know about some of you guys! If I put a bridged PPI 21400 on a JL 10W0 and put the gains all the way down, can I say the JL took all 1400 watts??? NO!

raf
10-15-2000, 05:02 AM
Just curious, what amplifier are you going to use? I do not think it's overkill. Lot's of headroom is good. Focal's should be able to handle it if not, that's what warranty's are for.

raf

audiophile2
10-15-2000, 05:37 AM
hey guys...here is a tip...if "autofile" says it is ok to run alot of power, my money is going on that side of the bet. He knows what he is talking about.

Thank you for setting people straight, "ShootMe"

4fifteens
10-15-2000, 11:20 PM
My head unit is an excelon 915, 4.5 volts out. my amp is a punch 400.4 birthsheet says 156 watts by 4 into 2 ohm; therefore, 312 watts by two into 4 ohm I already have the amp and speakers. this is a 2-Way set if you didnt already know it. I already knew that they could be run with 200 watts per side, but I have never seen 300. I heard 85 watts just yesterday on them, it sounded good til it got loud. I think I've pretty much made up my mind here cause I think the most important point made was that 312 watts or whatever will never make it to the speakers, not even on transients. maybe 100-150 at most. Do most of you agree? Might also help if I somewhat seal them up.

4fifteens
10-15-2000, 11:23 PM
Oh and whoever said put that amp back to my subs, I had 4 memphis 1000d's on my bass, im getting 4 1500d's. thank you.

audiophile2
10-16-2000, 04:16 PM
also consider bi amping the component set using an active crossover before the amplifier. That would also sound nice. If it a 2 way set use 2 channels to the tweets and 2 channels to the mids. If it is a 3 way, use 2 channels to the mid/tweet combination and the other 2 channels to the midbass.

4fifteens
10-26-2000, 01:37 AM
There is no option to bi-amp. I know I could still do it with an active crossover, but I'm sure focal has done their homework and it would be hard (for me) to out perform the crossovers supplied with them already.

audiophile2
10-26-2000, 01:00 PM
you just lose approx 25% of your power in the passive crossover (speakers see 225 watts instead of 300). That is an estimate, but 300 watts to the speakers with an active crossover is a big difference from 300 watts with a passive. Plus you gain flexibility with xover points. You are right though, higher end passive xovers are not the same as the cheap ones on low end speakers.