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Discussion Starter #1
hi,

i have a question regarding the focal tweeter from the k2p set.. i think its the kn52.. im wandering how much power it can safely handle in active mode..

i have the alpine h701 processor, and it has the ability to run the tweeters and mids seperate,and provides time allignment and 31 band eq on each mid and tweeter seperately..

my issue is i have a centre ch amp, which is only using 2ch cos its bridged to run that speaker only.. so i have two 75rms ch going un-used, and the procesor ability i mentioned earlier, and it seems a shame not to utilise it..

is 75rms too much for the tweeter alone, if so, what would be ideal for the tweeter. the power handling of the set if 80rms in total.. they have been getting 150rms for 2 years now and handle it fine.. i realise the x-overs obsorb about 10percent of that power, and the tweeter uses very little of it comparison to the mid.. so theres my concerns.. basically over powering and burning them out..

thanks for any advice you can offer..

BRAD..
 

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Tweeter can get stupid loud on 20w, you may think you have been pushing 150w to them, but you likely aren't, it's prolly more like 50w at best and 100w on transents..

Also, you can level match with the 701 and gain match on the amp (lower gain settings)

Hook it up, start with zero gain and zero in the 701 and go from there..
 

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Discussion Starter #3
ok cool, thanks..

btw, i say 150w because thats just whats available from the amp, i do have some understading of what your saying about the transients... it was a very valid point and a help and useful post..
thanks again...

another thing, do you know the x-over point on the k2p... i beleive it was 3600. does that sound right,

also, now im going to be giving the midrange only 75rms, do you think that will impact on the speaker much, if at all... i did notice a huge improvement in the midrange and midbass when i bridged the amp after the initial run in period... si im wandering about the power to the midbass now.. im sure its enough to get it moving and grooving, but is it plenty...

cheers
BRAD..
 

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Always keep in mind that the difference in 1 watt RMS and 100 watts RMS is only 10dB volume. Music is extremely transient, so you are probably only running a few watts at a time to a tweeter (they are very efficient), and more than a few watts would probably kill your ears anyway.

Remember that decibels are logarithmic, and the power usage is squared, not linear.

You're probably A-OK.

hi,

i have a question regarding the focal tweeter from the k2p set.. i think its the kn52.. im wandering how much power it can safely handle in active mode..

i have the alpine h701 processor, and it has the ability to run the tweeters and mids seperate,and provides time allignment and 31 band eq on each mid and tweeter seperately..

my issue is i have a centre ch amp, which is only using 2ch cos its bridged to run that speaker only.. so i have two 75rms ch going un-used, and the procesor ability i mentioned earlier, and it seems a shame not to utilise it..

is 75rms too much for the tweeter alone, if so, what would be ideal for the tweeter. the power handling of the set if 80rms in total.. they have been getting 150rms for 2 years now and handle it fine.. i realise the x-overs obsorb about 10percent of that power, and the tweeter uses very little of it comparison to the mid.. so theres my concerns.. basically over powering and burning them out..

thanks for any advice you can offer..

BRAD..
 

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I am having the same concerns with the Scan 12M mids. I plan to send 150W to each at 250Hz to 4-6KHz range and they are rated for 40W. And there is considerably more power in those freqs. I was running them off a Mac with meters and the tweeter channels barely moved above 1W, but the mid channels were exceeding 20W quite often even at SPL I would not consider excessive at all. This was in my basement not in a car so I am sure it would be louder in a car, but still over driving the mids is a concern.
 

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Discussion Starter #8
hmmm, ok...

thanks for the feed back guys, im considering running them thru the crossover to use the factory x-over points.. and also to soak up some power as advised by a freind..

also, some one else also said the 4khz mark was good for a x-over point, but I THINK the factory setting is more like 3.6khz.. i think, not 100% sure, dunno where ive plucked that number, but it rings a bell..

so overall, with the gain down low, using the x-overs it will be fine?

thanks for the comments and links,
BRAD..


BTW, anything else, please feel free to add more info, thanks again..
 
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