infinity kappa perfect 6.1 bass question.
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=47906
Printed Date: May 12, 2024 at 3:21 AM
Topic: infinity kappa perfect 6.1 bass question.
Posted By: tbone587
Subject: infinity kappa perfect 6.1 bass question.
Date Posted: January 17, 2005 at 12:55 AM
I just recently installed kappa perfect 6.1 in my scion xb. I am using an alpine 9831 head unit, and I have a 4 channel alpine amp, that puts out only 40 watts per channel. When I have the hpf set at 80hz on my head unit, everything sounds super clear, there just isnt that much bass, and I dont have subs, so I really would like more bass until I do. With the filter off, The highs remain perfectly clear as I turn the volume up, but once i get to a somewhat loud volume and its putting out a lot of bass, it appears to be distorted on the midrange speakers. My doors are dynmatted. What kind of settings could I do on my amp/head unit to make the bass sound less distorted. The amp is an Alpine MRP-F240. Again its not the most powerful amp, but it should be able to put out enough bass and not distort.
Replies:
Posted By: kfr01
Date Posted: January 17, 2005 at 2:17 AM
Sorry tbone, you simply can't get much bass out of 6" drivers. Keep the hpf on until you buy a sub.
Also, unless you are clipping the amplifier, the distortion you're hearing isn't from the amplifier it is from your speakers. You're asking them do to something they weren't meant to do. You're pushing them past their comfortable excursion limits. The speakers are producing distortion. Either way, clipping the amp, or simply bottoming out the speakers, you're harming them. Stop harming them. :-)
Buy a sub or live with the hpf.
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New Project: 2003 Pathfinder
Posted By: tbone587
Date Posted: January 17, 2005 at 9:14 AM
What does clipping the amp mean? Also what does the lpf do? Is it all component sets in general that the drivers arent meant to put out much bass? I mean with the filter on it sounds amazingly clear at any volume. I just dont understand.
Posted By: DYohn
Date Posted: January 17, 2005 at 10:19 AM
Your system is working perfectly. HPF = high pass filter, which blocks the sound frequencies below the setting (this is your bass.) LPF = low pass filter, which blocks the frequencies above the setting (this is used for subs.) Your components are designed to produce the best sound with a HPF set to between 80 and 100 Hz. This means they will not produce much if any bass. You will need a subwoofer to cover the bass frequencies. If you turn off the filter and run the components full range, this is also fine, but they will not be able to handle high volumes in the bass and lower midrange frequencies. ------------- Support the12volt.com
Posted By: tbone587
Date Posted: January 17, 2005 at 10:27 AM
yeah like i said with running them full range is that the drivers distort more. I was planning on getting subs, it just ends up being a lot of money considernig the price of the sub and another amp.
Posted By: kfr01
Date Posted: January 17, 2005 at 10:48 AM
Yup. We understand, you just discovered why people shell out the extra money for a sub: high volume, low frequencies, and 6.5" speakers don't mix. Either turn the hpf on or don't turn them up. Heavy amounts of distortion harms speakers.
There are some very affordable amp / sub solutions if you're willing to work a bit to find them. Check out older stuff on ebay.
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New Project: 2003 Pathfinder
Posted By: jettagli03
Date Posted: January 17, 2005 at 11:26 AM
My Diamond Audio Hex Series puts out a good amount of distortion free bass and yes ebay is definately the way to go
Posted By: kfr01
Date Posted: January 17, 2005 at 11:33 AM
You probably run those Diamonds with a high pass filter though, right?
Any 6.5" speaker, even those much much more expensive than the Hex, will distort when pushed.
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New Project: 2003 Pathfinder
Posted By: jettagli03
Date Posted: January 17, 2005 at 11:38 AM
Yeah but only at 80Hz, nothing too high. But i do also have them in my Jetta doors that are pretty sealed for good bass response -------------
Posted By: MAXST
Date Posted: January 17, 2005 at 1:09 PM
Yeah if you mat the doors totally...it should help a bit.
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Posted By: blg748
Date Posted: January 17, 2005 at 3:23 PM
tbone587: i have the SAME setup as you i have the perfects 6.1 with the 9831 HU powered by ALpine mrvt-320 what i did was set to the HPF on the DECK at 80HZ it gets very loud and the woofers in the DOORS really move they dont distrot hell i can feel the air it moves on my feet. i was messing with the bass focus on the deck before i got the sub i had the bass focus at like FL at 10 and FR at 10 it sounded very good nice mid bass. they use to move very well and still do now i got real bass with my nice 12inch sub. Also turn that MX feature off they just make the speakers distrort by turning that MX feature on you do get more bass but my components tended to distrot easier. any more questions ask me since i have same setup for front stage as you. PS you may want to bridge that amp of yours it can give ur perfects 100WRMS*2 @ 4ohms. much better than ur 40WAtts atm this could also be why they are distorting just try it out and see what happens.
Posted By: kfr01
Date Posted: January 17, 2005 at 4:42 PM
blg748 wrote:
PS you may want to bridge that amp of yours it can give ur perfects 100WRMS*2 @ 4ohms. much better than ur 40WAtts atm this could also be why they are distorting just try it out and see what happens.
I don't think this is good advice. 40 to 100w is a not a large increase in power. Certainly not, "much better." blg748, you do know that this increase will only yield a MAX INCREASE in spl of 3db, right? You know this is small, right? Furthermore, if he is in fact bottoming the speaker out with 40w, 100w has the potential to cause EVEN MORE DAMAGE to the speakers. Not a good idea, in my opinion. If he finds he's actually clipping the amp after checking that the gains are set correctly, then by all means, increase the power to gain more headroom. However, based on everything he has told us, I highly doubt that is the case. This sounds like a good old example of a 6.5" being asked to play beyond its physical limits. ------------- New Project: 2003 Pathfinder
Posted By: blg748
Date Posted: January 17, 2005 at 6:04 PM
kfr01 guess your right. he probably does have the gains cranked it think my tweeters were distorting at vo l ume 19 out of 35 when the gain was maxed.
Posted By: DYohn
Date Posted: January 17, 2005 at 6:28 PM
I can think of very few setups where input gain should ever be "maxxed." Learn to set gain properly! ------------- Support the12volt.com
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