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Bumpin'Buick
11-23-2007, 11:00 AM
I just bought a set of Hertz Mlk165 comps and am wondering how much power ppl feed to these components.

I have an Audison Srx2s that puts out 180x2. Will that be sufficient?

Can the speakers take a lot more?

Thanks for the help.

night_mirage
11-24-2007, 05:10 PM
It can, But Clean power..

Great COMP BTW

Bumpin'Buick
11-24-2007, 08:48 PM
I know it can easily hand 180w, but I wondering how much ppl put to them on the higher end.

I wanna put around 260 to them with another audison.

tcguy85
11-24-2007, 08:57 PM
if they are efficient i don't think they will need 260 per side. what is their efficiency?

denali804
11-24-2007, 10:09 PM
I have a 75watt x 4 diamond audio amp on my mlk's and they are not even moving. I also replaced my hex s600 with the mlk's. I'm looking for a more powerful 4 channel at this point.

Bumpin'Buick
11-24-2007, 10:47 PM
They're rated at 92db

denali804 - how great of a difference was the change of speakers?

Ptown_TSxxx
11-24-2007, 11:24 PM
92db is a great sensitivity, you shouldn't need to throw all of rated power to the speaks. I just installed my Mach5 mli's and they are rated for 100w rms and I am olnly throwing around 60w per side and they sound great.

felixlau
11-24-2007, 11:26 PM
bradder,

IMHO, the MLK series speakers are very good. SRX will not bring out the full potential of it. at least the LRX or VRX series will do more justice to yr investments.:)

cheers..

Ptown_TSxxx
11-24-2007, 11:43 PM
I forgot to add that I am a fan of headroom though.

mr burns
11-25-2007, 12:05 AM
I'm also running the MLK165's. When I bought them, I asked the same question, and was told that the Hertz sales rep, who called on them said he was running 300watts per side to his MLK's and noticed a big increase in midbass. I think I'm going to bridge my PDX 4.150, buy a two channel for the tweets ( I'm running active) and see what happens. I'm running 150 watts to the tweeters now with no problems.

Bumpin'Buick
11-25-2007, 02:08 AM
I was thinking of maybe getting an arc audio FD4150 and bridging it to give them 320 a side.

I knew they could handle a good deal of power, just wasn't sure how much really.

night_mirage
11-25-2007, 08:12 AM
U don't have to do this much power to feed this comp..

i don't know why most of ppl always thinking about increasing the Watts.

Just give them a clean 150-200w AND You will be satisfied..

denali804
11-25-2007, 09:50 AM
bumpin, I like the mlk's alot but as of right now they are not sounding any better than my hex's did. I don't want to jump the gun on saying this because i think i might be severly(sp) under powering the mlk's. I just expected a major increase in mid-bass over the Hex's and have not yet found it.(once again i think i have power issues) I do like the tweeters better than the hex tweeters, I've always thought that the hex tweeters were a little harsh to my liking. (silks and alum.)

Bumpin'Buick
11-25-2007, 08:09 PM
Well, I'm hoping they'll sound better than the diamonds, running 180x2 to them.

I'll probably end up putting around 300-320 to them later on though when I get a new amp.

tcguy85
11-25-2007, 08:23 PM
seems like an aweful lot of power. i have 150 watts going to my current comps. why do you guys think you need that much power?

mr burns
11-27-2007, 01:42 AM
Denali 804. I think you're right about the power issue. These speakers need power to make them shine. The guy who reviewed them for Car Audio & Electronics said he could not believe the midbass these things can produce.

livinlegend
11-27-2007, 02:08 AM
question for you experts.

I have 2 pioneer gm-7300M mono amps. They give 250W @ 4 ohms RMS, 360W@2 ohms RMS (800W peak).

Could I just save myself the trouble of an extra purchase and use these 2 to power the MLKs, one mono per side? Or would that be a foolish decision because if it ever pushes the full 800W somehow the speakers are toast.

What would you do?

lyttleviet
11-27-2007, 02:28 AM
I had the Hertz HP2 putting out 370x2 to them and seemed like they wanted more so I am gonna go with 440x2 and see how they like that :). They seemed to be fine on the LRX 2.9 (whatever that was pushing it I can't remember).:emb:

night_mirage
11-27-2007, 09:49 AM
MONO will Not be the perfect match .. Sell them Both and get a 2ch amplifier that puts 150-250w per ch ..

Powers
11-27-2007, 03:52 PM
****, I still can't find anyone who will sell me two sets of MLK 165s and here you are worrying about power. :laugh:

Bumpin'Buick
11-27-2007, 04:53 PM
I had the Hertz HP2 putting out 370x2 to them and seemed like they wanted more so I am gonna go with 440x2 and see how they like that :). They seemed to be fine on the LRX 2.9 (whatever that was pushing it I can't remember).:emb:


440x2, that'll be wild.

So you're already doin 370x2 though, and they can take it no problem? That's good news, so the 320x2 I plan to put to them will be great.

livinlegend
11-27-2007, 06:51 PM
**** guys aren't you worried about your $500 investment? i mean ****...

lyttleviet
11-28-2007, 04:44 AM
**** guys aren't you worried about your $500 investment? i mean ****...

I paid more than that to guarantee that I can blow however many I want.:p:

Blackcharger06
11-29-2007, 12:22 AM
I've got the MLK 2's but not putting them in until next week. I've got a 450x4 JL audio I hope 150 is enough to send to them. It's what the crossover calls for. Head room would be a nice thing. I have a 300x4 that I could add to them fo ra total of 300watts to each side. Sounds like people on here think it would make a difference I'll have to think about it.

tcguy85
11-29-2007, 12:36 AM
what does hertz say to give them power wise?

denali804
12-17-2007, 12:01 AM
I don't really pay that much attention to power ratings, but I think they are 150 rms and 300 peak. However being from a prosound background I can tell you that speakers can take a hell of alot more then their rated power as long as you have plenty of good clean power and don't clip the amps. We usually give speaker boxes in concert/club setups 4-5 times their rms power ratings. Most people blow speakers with too little power and clipped signals. I went from 75 watts per door to 150 watts per door and they can easily take more.

Bumpin'Buick
12-17-2007, 12:05 PM
Right now I have them running 180 watts per door, and they can still take a lot more no problem.

The speakers show no signs of letting up.

tcguy85
12-17-2007, 12:13 PM
wow i can't believe people think they need 440 watts per door in a car. my 150 watts per door gets me plenty of mid-bass and plenty loud. my god!

lil azn 06
12-17-2007, 08:54 PM
I paid more than that to guarantee that I can blow however many I want.:p:

In that case you should of turned it up louder when i heard your system lol. Really need to see how these mid basses do.

hpatel34
02-19-2008, 03:26 PM
i have an audison vrx4.300 that is running a set of mlk165 at 109wrms.
from what i read, it should be safe to bridge the amp to get 350wrms, ill give it a try

goldway
07-09-2008, 12:19 AM
To share with my setup. I was run MLK165 with Lrx2.9 which give 280w per channel. midbass is strong. passive setup.

Now changed to two unit of Vrx2.150 seems..less midbass. Vrx2.150 only give 110w per channel. Maybe Vrx2.250 is right choice for MLK165, to archive sound clearity and better misbass.

But i can not do anything now, Vrx2.150 is not cheap to me.

titanle
07-09-2008, 01:08 AM
**** thats alot of power you guys are pushing!!! I have the hsk and i was doin 75 per side with my alpine mrv-f545. Just upgraded to the sundown sax100.4, apparently these amps are underrated and usually push about 125 per side. And I thought I had big power :P lol

datboiroy
07-09-2008, 02:24 AM
i have a zapco dc reference 1000.4 hooked up to my MLK's, 500x2 at 4ohms.

titanle
07-09-2008, 02:36 AM
i have a zapco dc reference 1000.4 hooked up to my MLK's, 500x2 at 4ohms.

holyyyyyyyyyyy.......does it really make that much of a difference in output?????

Here-I-Come
07-09-2008, 01:23 PM
Power is not a bad thing until you good crazy with the volume and start to clip you head unit.

Headroom is you friend. We just have to remember because your amp is rated at 500x2 rms and can make to much power, it does not all the time. Not at the frequency we use them at for comps. You have see maybe 30-50% of that power most of the time. Subwoofer is a different story. Have to extra power ensure you also get super can power. It is always better to have it and not need it, then to not have it and need it.


Also somewhere on page 2 someone ask about using two amps in mono, one per side for his MLK165 and some said mono is not a good match, ask WHY NOT? He not saying he is going to run a mono signal (sum of L/R), but he going to use one amp for L and one amp for R. This is a great idea and some of the best system run this why. Its the same as having a 4 channel amp and bridging it to make 2 channels.

BloWNMind
09-18-2008, 12:14 PM
**** thats alot of power you guys are pushing!!! I have the hsk and i was doin 75 per side with my alpine mrv-f545. Just upgraded to the sundown sax100.4, apparently these amps are underrated and usually push about 125 per side. And I thought I had big power :P lol

It's the 100.2 that is underrated, the 100.4 is very close to rated.

khanhfat
09-18-2008, 03:24 PM
i have a zapco dc reference 1000.4 hooked up to my MLK's, 500x2 at 4ohms.

You blew the tweeters lol :D 440w x2 from hertz HP4 amp is good enough not to blow it.

datboiroy
09-18-2008, 07:01 PM
You blew the tweeters lol :D 440w x2 from hertz HP4 amp is good enough not to blow it.

its ok, im waiting for a new set :) gotta love warranty!!!

buggsson
09-18-2008, 11:34 PM
I wrote to elletromedia or whatever the company owning Hertz is called. They said not to give the comp more than the rated 150W, and if you needed more, it would be because of crappy, overrated amps.

A general question, when a company rates a comp at, as in this example, 150W, do they mean "true" (as a substitute for a better term) 150W, that is, actual 150W from an amp. An amp rated at 2x150 will not give you the full 150W per channel, if you get what I'm trying to say? If I understand this correctly, a 2x200W class AB amp is approx. 60% effective, would that mean that the comps then only will se approx 120W each channel?

fast85_gt
09-18-2008, 11:47 PM
you can give them to me and not worry about it j/k

tcguy85
09-19-2008, 12:16 AM
I wrote to elletromedia or whatever the company owning Hertz is called. They said not to give the comp more than the rated 150W, and if you needed more, it would be because of crappy, overrated amps.

A general question, when a company rates a comp at, as in this example, 150W, do they mean "true" (as a substitute for a better term) 150W, that is, actual 150W from an amp. An amp rated at 2x150 will not give you the full 150W per channel, if you get what I'm trying to say? If I understand this correctly, a 2x200W class AB amp is approx. 60% effective, would that mean that the comps then only will se approx 120W each channel?

this should help ya, either that or confuse ya more.

Music is not constant in its peak amplitude. The ratio of average power to peak power is in the order of 10-20dB. (10dB = 10 times power and 20dB = 100 times power). I would imagine that modern rock and roll/rap music the value is closer to 10dB. This means that with typical music the average power when using a 200w/ch amplifier is in the order of 20 watts per channel with the peaks rising to 200 watts. Anything higher than the 20 watt average will most certainly push the amplifier into clipping.

an excerpt from here: http://www.diymobileaudio.com/forum/showthread.php?t=36040&highlight=clipping+explained&page=2

it talks all about clipping.

headless
09-19-2008, 09:53 AM
i'd be pretty dissatisfied with my power line CS's if i only pushed them 150w/side.

Another thing to consider about power ratings is that they are generally given at a specific crossover point. If you cross your speakers over at a higher x-over point than they rate them at, it is likely that you can push more power to them than the rating suggests before they reach mechanical failure, because higher frequency = less excursion :) Note that you can still melt the VC's just fine, so it really depends on the speaker as to whether they can take the extra power or not. If the rating from a particular speaker is given because they just can't take the heat of that much power, raising the x-over point isn't going to help. If the speaker can take all that power without a problem but it its mechanical max at a particular wattage at a particular frequency that the company rates them at....then you may have room to work with. For example, the power line CS are rated from 35hz up. True to form, you can run them full range if you're nuts...you just can't turn them up too far, or they will reach their mechanical limits. If you cross these suckers over at 80hz/12db (fairly 'standard' for lesser component sets...or even 12db/100hz! ugh), they barely even move, compared to crossing them over at 60hz and steep 24db slope results in a lot more movement. If you push the volume too far, you will reach their max excursion. If you bring the x-over point back up to 80hz, you have room once again to add even more power.

Psycareyo
09-19-2008, 10:36 AM
Hmm. So I guess my 60.4 will fail pretty hard providing the Hertz 570 comp set power? I'm not buying another friggin amp when I do my new setup on saturday. Can anyone recommend a good comp set that fits my Alpine 9883 & JBL CS60.4 well? I should probably just bite the bullet eh?

buggsson
09-19-2008, 07:20 PM
Thanks guys, now I have a bit more understanding of the subject.

khanhfat
09-23-2008, 12:39 PM
I wrote to elletromedia or whatever the company owning Hertz is called. They said not to give the comp more than the rated 150W, and if you needed more, it would be because of crappy, overrated amps.

A general question, when a company rates a comp at, as in this example, 150W, do they mean "true" (as a substitute for a better term) 150W, that is, actual 150W from an amp. An amp rated at 2x150 will not give you the full 150W per channel, if you get what I'm trying to say? If I understand this correctly, a 2x200W class AB amp is approx. 60% effective, would that mean that the comps then only will se approx 120W each channel?



So you say Audison is *****? nah J/k

Well cause the magnet and the design of the MLK is so power hungry that it needs more than what the manufactuer's rating . IN the back of teh tweeter of ML28 it rated at 180W and the woofer rated at 250W if you added up it'll be 430W for the load ... so its perfect match for a HErtz HP4 amps.

250W + of power is plenty enough to make it sound good just to be on the safe side.

buggsson
09-23-2008, 10:58 PM
So you say Audison is *****? nah J/k

No, not me, Ellettromedia:D
But I would guess it is because they are afraid of being sued, by someone out west, if they admitted you might be OK with more than the rated 150Wrms and they blew? But it is good to know that I am in need of more than the rated 150W.

mannyahles
10-05-2008, 01:35 PM
I jsut installed my Mlk's and powering them with 200 w x 2 from an Orion amp bridged. Seems like enough power and they sound sweet and smooth!

mannyahles
10-05-2008, 01:38 PM
Also somewhere on page 2 someone ask about using two amps in mono, one per side for his MLK165 and some said mono is not a good match, ask WHY NOT? He not saying he is going to run a mono signal (sum of L/R), but he going to use one amp for L and one amp for R. This is a great idea and some of the best system run this why. Its the same as having a 4 channel amp and bridging it to make 2 channels.[/QUOTE]

I am running my MLk's mono and I bridged my amp. The speakers rock and have great midbass with only 200 w going to them.

khanhfat
10-08-2008, 02:15 AM
Also somewhere on page 2 someone ask about using two amps in mono, one per side for his MLK165 and some said mono is not a good match, ask WHY NOT? He not saying he is going to run a mono signal (sum of L/R), but he going to use one amp for L and one amp for R. This is a great idea and some of the best system run this why. Its the same as having a 4 channel amp and bridging it to make 2 channels.

I am running my MLk's mono and I bridged my amp. The speakers rock and have great midbass with only 200 w going to them.[/QUOTE]

400 W = wow
500w = blow
250w = good
hahaha just my collection of results of how ppl put power to their MLK165.:veryhapp:

mannyahles
10-08-2008, 02:40 AM
I guess I could always sell my amp and buy a stronger amp. But I have installed my amps under the back seat (only place) and I have to be careful of the size (length especially) or it wont fit between the brackets.

datboiroy
10-08-2008, 10:11 AM
I am running my MLk's mono and I bridged my amp. The speakers rock and have great midbass with only 200 w going to them.

400 W = wow
500w = blow
250w = good
hahaha just my collection of results of how ppl put power to their MLK165.:veryhapp:

hey, i never blew my speakers and im running 500 watts. well not anymore, i sold my amps, but i ran them for 3 months strong.

GlocksRock
10-08-2008, 10:35 AM
I'm running my HSK-165 off a nine.4 bridged to 2 channels for 150x2 and they sound great and get plenty loud enough for me.

mannyahles
10-08-2008, 02:54 PM
So if I ran more power to them they would sound louder or would they sound better??? More midbass?? If it will just be louder than I dont need anymore power as it is plenty loud enough IMO!!

mannyahles
10-08-2008, 05:10 PM
Power question: I have 200 w bridged going to each side of the mono on the Hertz passive crossover. I turned my HU up about 80% then I started turning the amp up. I then noticed I only needed to turn the amp gain about 1/2 and it was as loud as I want it to be. So I am assuming I dont need a more powerful amp?

Will more power just mean I dont need to turn the more powerful amp gain higher to get the same loudness?

bamaboy
10-08-2008, 07:11 PM
Power question: I have 200 w bridged going to each side of the mono on the Hertz passive crossover. I turned my HU up about 80% then I started turning the amp up. I then noticed I only needed to turn the amp gain about 1/2 and it was as loud as I want it to be. So I am assuming I dont need a more powerful amp?

Will more power just mean I dont need to turn the more powerful amp gain higher to get the same loudness?

gain has nothing to do with anything you are asking, its just there to set to your HU output voltage

my gain is way down, barely up, the less the gain is up, the less chance you have for noise to come in the system

a bigger amp is always good to have, headroom FTW

mannyahles
10-08-2008, 07:14 PM
how would more power help me in my situation? If it is loud enough and the mid bass is hitting well, why would I want more power?

t-money
10-08-2008, 09:54 PM
how would more power help me in my situation? If it is loud enough and the mid bass is hitting well, why would I want more power?

you don't need more power.

just that the mlk 165'sare known to take anywhere from 200-400 watts a side safely. if you're happy with how it sounds don't change anything. I'll be putting 200 watts a side on mine from my Audison lrx2.500

mannyahles
10-08-2008, 10:59 PM
You will really enjoy listening to them. I am very satisfied and really enjoy driving around in my Tundra!

khanhfat
10-08-2008, 11:55 PM
Depends on your amp, more power you gives the more midbass u'll have , not how clean it'll sound.

The cleaniness is all about the quality of your amp and how well it will get loud without distort.

So my point is easy, you can put between 200 - 400w power , if it sounds loud, clean, and u happy with it, leave it :D . If it's not what you expected, and you hear some noise or the musical quality arent up there yet, get another amp or a good HU will solve ur problem.


overall , this MLK 165 is really a good performer compared to other speakers at this price range. I haven't heard ppl talking about focal or other hi-end brand about how good their speakers sound with different amps except this one. :D

Good job Hertz :D!!!

dansoi
12-29-2008, 03:41 PM
is ppi 2150 am ok for the mlk165?.,

eharri3
12-30-2008, 03:03 PM
For my next setup my goal, crazy as it sounds, is to put over twice as much power to each driver as its RMS ratings, get amps with max input sensitivity settings that are a little bit higher than my head unit's voltage output, and leave all gains at or near their minimums. I don't think over powering or underpowering does anything in and of itself to blow a speaker, it's what the user does with amp and gain controls. Either they overcompensate when things aren't loud enough or do not compensate appropriately if they're feedings their speakers more than what they need. Give a 150 watt speaker 300 wats, back off some on the gains, and know your drivers will have every ounce of power they can use everywhere in the volume range without you having to tweak or overlap the gain or anything else that takes away from pure maximum output in order to get loud at normal listening levels. For those rare musical peaks that come at or near the head unit's peak voltage, you still have power to spare to reproduce them clearly and free of distortion and you don't have to sacrifice peak performance to get them as loud as you want in normal listening. And yes, I believe loudness is important even in SQ applications because the music has to get loud enough for you to clearly perceive and appreciate the details. In an underpowered system it's not that you sacrifice clarity but that you can't hear it as well.

RMS power rating does not mean that's all a speaker needs, and it also doesn't mean that's all a speaker can take in normal listening levels. It's a reference point, determining what's the strongest amplified test tone you can feed it continuously without killing it, that gives you a general idea of what it's mechanical and thermal limits will be when stressed. It will NEVER see those conditions while playing music at normal listening levels though it may come close for brief instances. In fact it never sees any specific amount of power for more than a second or two at any one time. If it's rated to take 150 watts and it sees over 200 for a few seconds in each song nothing bad is going to happen. If it's rated for 40 watts and you put 250 to it there is a higher likelihood that it will get at or above its RMS rating for more extended periods.

If you have comps rated for 120 watts or more and you know how to work the gain dial I see no problem throwing 2 or 2.5 times rated power at them. Just get speakers with power ratings of 100 watts or higher which are generally designed to have higher limits under normal listening and watch the gain dial. All it will mean is you'll get the loudness you need at more normal listening levels and will probably actually stress them and the rest of your system less.