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king ranch
05-16-2008, 07:39 PM
just wondering wats a safe wattage to throw at the 6.5 momo comp set its rated at 120rms and i am using the crossover and setting gains with a 1khz test tone

120rms is loud but i figured they could be a lil louder

so wats the most i could give them clean power that is but safe for the speakers and not having to worry bout them blowing

king ranch
05-16-2008, 07:46 PM
need some input

king ranch
05-16-2008, 08:41 PM
upp

edzy
05-16-2008, 08:52 PM
well, its not the 6.5, but the DB 6x9, and I feed them 300 without problems. Gains set correctly and all that good ****. Acually, 1 pair did smoke after 2 years, but CC extended warranty FTW.
That being said, 200 is probly a safe bet.

king ranch
05-16-2008, 09:22 PM
well they arent broke in yet i only have 120rms right now with a 80hz slope set gains with a dmm on a 1khz tone so i think i might wait a few weeks for them to break in and then throw 150 at them the most i have to give them is 175rms

did you feed 300 per speaker or 300 between the two

tez4life
05-16-2008, 09:32 PM
Be careful with the Polks and exceeding their RMS. Polks sound wonderful, but their tweeters are sensitive, I have blow a few in my day, lol.

You could do 150 RMS to them, but be very gentle with the gains. If they give you any signs of stress, turn them back down.

edzy
05-16-2008, 09:34 PM
it was 300 per speaker. Currently I run them at 75 x 4 as I have 2 sets. Acually, thinking about it, I would stick to what you have them at. They didnt like the higher rms. If they are not loud enough for you, look at some more efficiant drivers that are in your amps rms range.

king ranch
05-16-2008, 09:35 PM
yea i figured the most i would go is 140rms prob will just set it at 135rms and let it be or might go with 150rms since i only have 18 guage running to the comps and i am sure its loosing a bit of power once it reaches the comps, reason for 18 is because all i had at the time.

wat signs of stress should i look for

also would putting the crssover on -6db for the tweet help ease the stress on the tweeter

edzy
05-16-2008, 09:38 PM
signs of stress would be a coil burning smell. Also the momo comps are a better driver then the DB line. So it should be fine. and -6 should help the tweeters.

king ranch
05-16-2008, 09:40 PM
ok i messed with it at -6 and it just doesnt sound detailed even with the hu on +6 so i set it at 0db and the hu on +2 and its about perfect

i think the most i am gonna give them is 135rms

how much power am i loosing using 18 guage compared to 14-16 guage

edzy
05-16-2008, 09:46 PM
18 should be fine. as long as its not very very long runs. after a while of playing at higher volumes, feel the wire in a few spots, if it feels warm at all, upgrade.

king ranch
05-16-2008, 09:51 PM
its only about a 10-15ft run at the most

king ranch
05-16-2008, 10:44 PM
i played it about 5 mins at high volume and the wire didnt even get warm at all

king ranch
05-16-2008, 10:44 PM
will play longer tommorow and see if its warm or not

edzy
05-16-2008, 10:48 PM
well, according to this, its undersized.

http://www.bcae1.com/images/swfs/speakerwireselectorassistant.swf

mokedaddy
05-16-2008, 10:51 PM
well, according to this, its undersized.

http://www.bcae1.com/images/swfs/speakerwireselectorassistant.swf

Its only undersized if you have more than a 1db loss. He does not. Also we are talking 5 to 6 amps of current. It should be more than sufficient.

king ranch
05-16-2008, 10:53 PM
well i might redo it with 14 guage down the road when i get some time and prob do it when i deaden and seal the doors when i get the cash

king ranch
05-16-2008, 10:59 PM
Its only undersized if you have more than a 1db loss. He does not. Also we are talking 5 to 6 amps of current. It should be more than sufficient.

so i should set the gains to around 140-150 so the speaker sees a 135rms

king ranch
05-16-2008, 11:21 PM
so 145 at 20 feet would give me 128rms and 15 feet would give me 132rms

my range is inbetween 15-20 feet so tht would work right

tez4life
05-16-2008, 11:27 PM
Heres my opinion.....

Since you already have the wire and this is not a major build, I say its cool to run it.

But, I would suggest, again, to upgrade to something thicker that will flow current better.

I ran a Sundown 1500d on a 4 gauge power wire for a lil while (even though its got 0/1 gauge Power and Ground hookups), but I never took it below 2ohms.

Never had one issue, but 0/1 would have been much better and prob gave me more output at 2ohm as well.

Upgrade your wire when funds are ava.

king ranch
05-16-2008, 11:28 PM
well i hav kicker 1/0 ran from batt to the dist block and i have 4 guage running to the zx850.4 and i have 1/0 to the zx1500.1 and i am using 8 guage for the subs and 18 guage for the comps

mokedaddy
05-16-2008, 11:30 PM
so 145 at 20 feet would give me 128rms and 15 feet would give me 132rms

my range is inbetween 15-20 feet so tht would work right

You are taking power ratings way too literal and way over thinking this. It is not that complicated. Set it correctly. If you arent happy change it. If you can no longer change it get something else. Only you can decide what sounds ok.

I dont mind helping you but more than 10 threads about **** near the same thing is a little excessive. Feel free to try things yourself.

king ranch
05-17-2008, 12:20 AM
ok i set it at 135rms

one more question since i am unsure i have my gains set at that rms with my hu 35/50 70% max or would it be louder if i set my gains with HU 38/50 being 75% max or would if not make a difference since the amp is putting out the same power either way when i set my gains at the same no matter wat voulme its on

king ranch
05-17-2008, 09:13 PM
well just blew them

















haha j/k i got it set at 135rms and get pretty darn loud and sound good, they get loud enough when listening at full volume they make my ears start to ring when i turn the truck off haha, not sure if that means loud or hash i have the crossover set at -3db and the HU at 0 on treble and the bass i have also is at 0 and i have the slope on the amp at 80hz

king ranch
05-19-2008, 12:59 AM
anymore input from people with polk momo's

MBrock4u
05-19-2008, 06:53 AM
I really love my polk momo's, even have a pair of db tweets to boot. I feed them 100 rms and thew will scream alll day long. I love the sq and such a natural sound. It also helps that I have major tweeking abilities from my Excelon X-990.

king ranch
05-19-2008, 05:02 PM
I really love my polk momo's, even have a pair of db tweets to boot. I feed them 100 rms and thew will scream alll day long. I love the sq and such a natural sound. It also helps that I have major tweeking abilities from my Excelon X-990.

wat do you mean pair of db tweets to boot

and yea i am thinking of getting another pair of momo's maybe the 5.25's or the 6.5's because the 65's are cheaper and put the speaker in the rear and mount the tweet up front along with the other set of tweets upfront and just dont turn the gains up too much, thats only if i need the extra highs

king ranch
05-28-2008, 12:37 AM
well i have had them for 2 weeks with 135rms i think this weekend i am gonna set the gains up to 150 and see how they do

any input from people who used polks b4

king ranch
05-31-2008, 12:18 AM
tried out 150 on them and wow they scream even louder and sound excellent they are some great speakers

king ranch
06-01-2008, 08:19 PM
upp

only126db
06-02-2008, 02:24 AM
The best way to tell if your speakers are being stressed is to listen......

Listen very carefully for changes in tone as volume increases.....

Its a hard one to explain but generally with a decent set of speakers you will be able to tell when they reach their potential and when they have crossed over the line....