Best car amp frequencies? - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 30th December 2007, 10:49 PM   #1
Flyin11 is offline Flyin11  United States
diyAudio Member
 
Join Date: Sep 2007
Default Best car amp frequencies?

I'm really wanting to know what the best frequency is for rock music? I have mine on 60hz and on some songs it hits so hard but then when I got to a couple other songs I have listened to before that sounded awesome on my last system didn't sound hard at all. I think I might try and turn it back to 80hz in the morning and see how that sounds now with the 5 volt preouts. I have heard anything from 80hz-120hz on some sites. I think the lower frequencies are used for rap/pop/or R&B. Something that has more bass in it. What do you guys suggest?
  Reply With Quote
Old 31st December 2007, 12:09 AM   #2
diyAudio Member
 
Join Date: Jan 2006
Location: Central Ohio
Are you sure your amp is compatible with 5V pre-outs? If so, do you have the gain adjusted properly on the amp? Is there a bass boost on the amp? Adjusting the gain, the crossover point, and the boost will definitely affect the output.

I think 60hz is too low. I recommend 80-100, but it is dependent on what the capabilities are of your sub and main speakers as a combination.
  Reply With Quote
Old 31st December 2007, 12:21 AM   #3
diyAudio Member
 
Jonny Hotnuts's Avatar
 
Join Date: Dec 2007
The question you are asking if I understand it correctly can not be answered.

I think you are asking of what your LP Hz is a better setting for rock music.
The XO is completely dependant on the speakers, the enclosure resonant frequency and the resonant frequency of the vehicle.

Here is an explanation of how it works and what those numbers mean:

Hz
This is cycles per second and can most easily be explained without getting to technical as the wave generated by the speaker, 1 Hz means the speaker will move full in and full out in one second….you can hear this.
10 Hz means it moves 10 times in one second and so on.
You can start to hear bass @ around 35-40Hz.

When you have your XO set at 80Hz this means you will get 80 Hz and below to your subs (this also is where you could look at your crossover slope, a 24db per octave will trim faster than a 12db per will, but nothing you should concern yourself with). A setting of 120 just means that it will start adding more mid bass to the subs because it will send 120 and below to the sub.
Subs that are fast enough (usually smaller subs 8-10”) can handle more mid bass without breaking up. Bigger subs start sounding poppy and clearly don’t sound as good with the higher settings.

So if it is on 40-120 or anything in between means it will still get the same low bass but the differences will be in amount of higher bass sent to the subs only.

I would recommend setting your XO on a setting that sounds good for all types of music and leave it alone. 80 to 100 is for most a good range for most subs between 10-15". If you have 5.25 mids and they are crossed higher consider 100Hz or a bit higher on the subs unless it starts sounding bad, 6.5” mids and 80-90 LP Hz is good.

The XO settings is a balancing act between your subs, mids and tweets.

Good luck.
  Reply With Quote
Old 31st December 2007, 12:55 AM   #4
Flyin11 is offline Flyin11  United States
diyAudio Member
 
Join Date: Sep 2007
Actually you just answered my question just fine so it can be answered Just like I was thinking, it seems to be usually anywhere up to 120hz.

Well, I'm not complaining about the sound of my system just was wondering on what would be a good setting for rock music as that's all I listen to. The gain is set just fine on the amp and so is the bass boost. I have not yet gotten my second amp as previously discussed but that will only add to the clarity of the highs and more control I have over the higher frequencies going to my 6.5's and 6X9's. I had the car at the audio shop and the guy came out and listened to it about 2 weeks ago and he got me to turn the headunit's frequency to 60hz but he didn't know that below him the amp was set at 80hz. So I have no clue what frequency output that was but that made it hit a lot more than it use to so I left it there until I turned it back to about 60hz on the amp. I'll try to turn the frequency range up a little bit more to 80hz and will see how that sounds in the morning. It was just kind of interesting to hear how some of the bass notes in a bass guitar would sound harder at points than the other. It's just a fact that some songs sound better than others cause it just depends on how they are produced (Like songs produced from the 80's will sound very low output wise compared to songs from the 90's) and how they are played. It's just kind of interesting how some songs sound....
  Reply With Quote
Old 31st December 2007, 01:19 AM   #5
diyAudio Member
 
Jonny Hotnuts's Avatar
 
Join Date: Dec 2007
I think my last post was too wordy.

Because you have 6.5 and 6x9s you can cross your subs lower.

You just want to have all gaps filled.

This means (for example only, it will all depend on what speakers you have):

Subs crossed

80Hz and below -

Mids

80 low to 1000 high

tweets

1000 low to 20,000 +


You can see that one speaker starts off where the other leaves.

If you have your mid set at 80 low to 1000 high and your sub is set to 60 and below...you can see that you are loosing everything between 60 and 80......thats bad.

-----------------------------------------------------------------------------


BTW:

A setting of 60 is not wrong......


Look at it like this

Lets say you have 2-18" subs, they sound shitty but move lots of air (good).

You could set the 18s to 50-60 low pass or lower and then use some 8" speakers crossed at 50-60 to 200 and could very well feel like the kick drums were punching you in the chest and any sub sonics would suck the air out of you. In fact you could cross the 18s to 40Hz and not even hear them but you would know they were there!

Again it all depends on how you balance one set of speakers to another.
  Reply With Quote
Old 31st December 2007, 06:46 PM   #6
Flyin11 is offline Flyin11  United States
diyAudio Member
 
Join Date: Sep 2007
Quote:
Originally posted by 69CamaroSS396
Are you sure your amp is compatible with 5V pre-outs? \
Ok..You may be on to something there. I just checked the manual and it says 0.2-4V My headunit has 5V preouts. It sound great like it is and is playing flawlessly but what does this mean? Is it hurting anything?
  Reply With Quote
Old 31st December 2007, 10:47 PM   #7
diyAudio Member
 
Join Date: Jan 2006
Location: Central Ohio
It means with the amp using the least amount of gain(set to 4V), the HU will drive the amp to clipping level at a lower volume level than a 4V HU. This isn't an outrageous situation. Who knows, in reality the HU may only output 4V. Now if the amp could only handle 2V on the input, that would be different.
  Reply With Quote
Old 2nd January 2008, 08:29 PM   #8
Flyin11 is offline Flyin11  United States
diyAudio Member
 
Join Date: Sep 2007
What is clipping and is it really audible? I mean, could I have clipping and not even notice it?
  Reply With Quote
Old 2nd January 2008, 09:32 PM   #9
diyAudio Member
 
Join Date: Jan 2006
Location: Central Ohio
Clipping is a common term describing a distorted waveform caused by driving an amp beyond its design capabilities. And it is the MOST audible form of distortion. Some say the ONLY form of audio distortion audible to the human ear. And there are levels of clipping, from mild to severe. That is why so many experts recommend having amps that are much more powerful than what is actually needed for the task at hand. The extra power that is available allows the user to drive his speakers to their optimum performance without driving his amp to the ragged edge of its capabilities, and thus into distortion.

You see people commonly recommend matching speaker RMS ratings and amp RMS ratings. Even Crutchfield recommends this on their site. That would be fine IF the user NEVER drove their amp into clipping, but almost 100% of us do that in an effort to get the most from our system.

To put it another way, it is much better for SQ and for the equipment if you have a quality amp capable of 500 watts continuous that is being used to produce 300 watts than to have an amp capable of 300 watts continuous that is being maxed out and driven into clipping.

The RMS rating of a speaker is simply a warning of sorts to the user as to how much heat the voice coil can handle continuously. There can be situations of severe clipping that can cause an amp to produce much more than its rated power in the form of heat in the voice coil, which is probably the most common way speakers are damaged. It is also extremely hard on amps.
  Reply With Quote
Old 2nd January 2008, 11:21 PM   #10
diyAudio Member
 
Join Date: Dec 2007
how many car audio tweets can play from 1000Hz up??
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
CD With dodgy low frequencies ... mart34 Multi-Way 5 12th July 2009 05:01 AM
help to generate frequencies woodturner-fran Digital Source 6 8th May 2006 09:43 PM
C37 frequencies and treatments mrfeedback Everything Else 0 8th April 2002 06:07 PM
Test frequencies Christian Everything Else 1 24th March 2002 01:19 AM
Frequencies for EQ? Lisandro_P Solid State 5 12th November 2001 08:16 AM


New To Site? Need Help?

All times are GMT. The time now is 12:28 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2