- Thread Starter
- #2
I guess I am on my own? What is wrong with my question?
Rich B
5,000+ posts
CarAudio.com Veteran
Consider this a bump for more eyeballs.
I would suggest looking into time alignment as part of the answer.
- Thread Starter
- #4
Okay...I do have my DEH-80PRS coming....like in 10 minutes....so I will be able to address TA after I get that in. I am hoping it really improves things. Thank you for your suggestion...I mean anything helps! Cheers!
calebkhill
10+ year member
CarAudio.com Elite
That 80prs will solve most everything.
Glad to hear you got one.
There is a process to set up the system. I'll try and post here.
This is a very basic way outside of dsp and rta.
1. Set desired crossover points and slopes.
2. Check polarity of each set (tweets and mids). Get the track from the iasca, meca, out r somewhere online that says "My voice is in phase, my voice is out of phase") the person should explain how to listen. This is important, if you're speakers are out of phase then everything will be wrong. The 80 prs was made fur these issues. You can invert the phase of each driver separately, which you may need to do to get the track to play right and get your speakers in phase.
3. A. Center frequency bands. Use 1/3 octave test tracks of "uncorrelated pink noise". First, use the 80prs separate L/R level control to center bands. Then, 800hz and below, you must use time alignment to center frequencies further.800hz and above you must use EQ to center frequencies.
B. Start at the 1/3 octave track somewhere at the middrange high pass filter. Start at 200hz. While the noise is playing, shift the noise track to the center of the dash with the separate L/R level control the prs supplies (these features are why you bought this unit). Decrease 1db, increase 1db on either side to shift the noise image to the center. Place something on your dash (bottle cap, penny) to mark the center of the dash, and use time alignment to move each noise track to the marker you used. Do this until you've centered the best you could with the level controls. (This is what "level matching" is),
C.Now, use time alignment to center bands up to 800hz. This is to increase the center focus where the L/R level method couldn't do completely. add delay to the left Mid in very small increments until the noise moves itself to the center of the dash. You'll literally see the image move.up to 800hz. Move the image to the marker you used.
D. After 800hz, use EQ to center frequency bands. (Thus is the interaural level difference area, and is why we aren't using time but level now. Use the same method as the L/R level control, but here instead of using the 80prs separate L/R volume level control as before, you want to use the separate L/R eq level. As you go up the octaves through the test tracks, you'll notice some frequencies may already line up with your marker. The ones that didn't, +1/-1 on either side of the EQ to bring the frequencies to your center marker.
Your done.
Your system should now sound quite well.
Play the "my voice is in phase" to confirm polarity and center image.
After this there are other fine tuning methods.
Glad to hear you got one.
There is a process to set up the system. I'll try and post here.
This is a very basic way outside of dsp and rta.
1. Set desired crossover points and slopes.
2. Check polarity of each set (tweets and mids). Get the track from the iasca, meca, out r somewhere online that says "My voice is in phase, my voice is out of phase") the person should explain how to listen. This is important, if you're speakers are out of phase then everything will be wrong. The 80 prs was made fur these issues. You can invert the phase of each driver separately, which you may need to do to get the track to play right and get your speakers in phase.
3. A. Center frequency bands. Use 1/3 octave test tracks of "uncorrelated pink noise". First, use the 80prs separate L/R level control to center bands. Then, 800hz and below, you must use time alignment to center frequencies further.800hz and above you must use EQ to center frequencies.
B. Start at the 1/3 octave track somewhere at the middrange high pass filter. Start at 200hz. While the noise is playing, shift the noise track to the center of the dash with the separate L/R level control the prs supplies (these features are why you bought this unit). Decrease 1db, increase 1db on either side to shift the noise image to the center. Place something on your dash (bottle cap, penny) to mark the center of the dash, and use time alignment to move each noise track to the marker you used. Do this until you've centered the best you could with the level controls. (This is what "level matching" is),
C.Now, use time alignment to center bands up to 800hz. This is to increase the center focus where the L/R level method couldn't do completely. add delay to the left Mid in very small increments until the noise moves itself to the center of the dash. You'll literally see the image move.up to 800hz. Move the image to the marker you used.
D. After 800hz, use EQ to center frequency bands. (Thus is the interaural level difference area, and is why we aren't using time but level now. Use the same method as the L/R level control, but here instead of using the 80prs separate L/R volume level control as before, you want to use the separate L/R eq level. As you go up the octaves through the test tracks, you'll notice some frequencies may already line up with your marker. The ones that didn't, +1/-1 on either side of the EQ to bring the frequencies to your center marker.
Your done.
Your system should now sound quite well.
Play the "my voice is in phase" to confirm polarity and center image.
After this there are other fine tuning methods.
calebkhill
10+ year member
CarAudio.com Elite
Note.
The initial time alignment you set, as well as your first round of centering bands with separate L/R volume control should get all the frequencies close center. Where you wantyour center is personal preference.
If it's too far right, go back through the tracks and shift the image slightly for all frequencies, play the voice track to confirm.
This is what the 80prs is for.
The initial time alignment you set, as well as your first round of centering bands with separate L/R volume control should get all the frequencies close center. Where you wantyour center is personal preference.
If it's too far right, go back through the tracks and shift the image slightly for all frequencies, play the voice track to confirm.
This is what the 80prs is for.
Activity
No one is currently typing a reply...
Similar threads
- Started by Imperiumwolf
- Subwoofers 2 3
- Started by Togalock77
- General Car Audio
About this thread
