Mark X Build Log

[roms]

Will do Taimoor bhai ATM considering which reverence curve to follow. Confused between the Harman Kardon and Audyssey reference curves.

^^^Harman Kardon have a roll off above 2.5khz which goes to apromimately -7db down to 20khz

^^As for Audyssey target curve the roll off begins at 4khz and goes down to about -9db in the 20khz region.

^^ Various target curves compared.

Sir the setup is installed n running.

Sir, how you intend to do RTA and through pink noise or sweeps? Secondly to me the Audyssey curve looks promising. With this curve you have reflections to add to the rolling off curve after 4khz, which will make it more linear.
Also it seems like that the total ripple will be - 7.5db across the spectrum.
How do you see it.
I am aware we can't talk it through without actually looking at the measured response. Enjoy the tuning phase as it attracts me too much

[Talhadon]

Ahhh .... Sir,Mark X Japan gaye the ya Japani yahan aye thay for Installation ?
LEVEL !

[stj174]

Aalaaa install sir. Love the factory finish. The best part about doing a diy is the satisfaction u get when people say it looks like it came from factory like that and in that department u have nailed it.

Sent from my HUAWEI G700-U10 using Tapatalk

Thank you Arsalan bhai, i am glad that you liked the install and the finished FG work. Factory finish FTW

Ahhh .... Sir,Mark X Japan gaye the ya Japani yahan aye thay for Installation ?
LEVEL !

Naughty boi

Sir, how you intend to do RTA and through pink noise or sweeps? Secondly to me the Audyssey curve looks promising. With this curve you have reflections to add to the rolling off curve after 4khz, which will make it more linear.
Also it seems like that the total ripple will be - 7.5db across the spectrum.
How do you see it.
I am aware we can't talk it through without actually looking at the measured response. Enjoy the tuning phase as it attracts me too much

Sir there are various methods for doing RTA/ EQ to attaining the target curve. Single point, spatial averaging, gated, un-gated, impulse, sweeps etc. All these tools and methods are there, but i will be using the simple method with plain old pink noise. I will be using the Dayton Audio iMM-6, calibrated mic for the RTA. You are right about the -7.5db at 20khz, i just made a guesstimate by looking at the graph.

Sorry I didn't get what you mean by, "reflections to add to the rolling off curve after 4khz" ?

[roms]

Sir there are various methods for doing RTA/ EQ to attaining the target curve. Single point, spatial averaging, gated, un-gated, impulse, sweeps etc. All these tools and methods are there, but i will be using the simple method with plain old pink noise. I will be using the Dayton Audio iMM-6, calibrated mic for the RTA. You are right about the -7.5db at 20khz, i just made a guesstimate by looking at the graph.

Sorry I didn't get what you mean by, "reflections to add to the rolling off curve after 4khz" ?

One has to be very careful while discussing "techy" things with guru like you

With Audyssey approach, the natural roll off begins from 4khz till the 20khz mark. We also know that the reflections after 6khz are very vulnerable and when coupled with glass etc, they add some dbs to the actual reproduced signals (Frequencies). You wont have to be bothered about the ripples as long as you have some healthy reflections. i.e. you have ability to deal and tame the reflections with your DSP. Hence the more linear measured response.

[stj174]

One has to be very careful while discussing "techy" things with guru like you

With Audyssey approach, the natural roll off begins from 4khz till the 20khz mark. We also know that the reflections after 6khz are very vulnerable and when coupled with glass etc, they add some dbs to the actual reproduced signals (Frequencies). You wont have to be bothered about the ripples as long as you have some healthy reflections. i.e. you have ability to deal and tame the reflections with your DSP. Hence the more linear measured response.

You are right Taimoor bhai, Audyssey curve is pretty good actually. I also like the Harman curve minus the bass boost. Harman curve is very warm, to some its good, to some its too laid back, matter of personal preference. I remember when I had the JBL MS-8 (Harman curve) the setup sounded really good (apart from the boosted bass).

I recently tried the Alpine PXE-H650 (Audyssey curve) with the Scan-speak tweet and the JBL GTi midbass driver. Sounded great too. Also depends on the type of music and genre one listens to.

You are right, reflections are not good for any audio setup, specially in cars where the drivers and the reflective surfaces are in the near field and can not be avoided what ever we do. In car, we are not actually listening to the frequency response of the drivers, if we were getting the FR of the driver then there would be no need for eq. What we listen to in car environment is actually the "power response" which the sum of direct sound of the driver + the reflected sound.

There are 2 types of reflections in car environment 1. Reflections close to the driver 2. Reflections close to our ears.

1. Reflections close to the driver: Since the driver within its dispersion range is emitting the sound in a spherical pattern, these cant be avoided therefore EQing them is the solution.

2. Reflections close to our ears: Now these are the nasty ones and one should be worried about these reflections. What they do is, induce crosstalk. Meaning sound from the right side driver entering our left ear and vice versa. For example, reflections of the drivers from door glass windows. These sort of reflections gets worse when the driver is played beyond its dispersion range. When a driver begins to beam it does not spread the sound in all directions, it simply emits the sound like a beam in the forward direction. Also when a driver beams the angle of incidence = angle of reflections. These sort of reflections ruins the imaging, it also confuses the auto DSPs specially in TA and then we blame the DSP instead of improper install.

I tried to avoid 2. by directing the tweets at each other, but at an expense of off-axis, top end natural roll off. Will wait until the drivers break-in, after that will manually tune the setup and maybe move the tweets 30degreeoff-axis. Lets see how it goes

[omarss]

Naumaan Bhai, one word. "WOW"

Awesome sound. Cant wait for the F1 to break in and give its full potential. A 100 hours is a long way!

[stj174]

Thank you Omer bhai for your comment, so nice of you.

[omarss]

Thank you Omer bhai for your comment, so nice of you.

Waisay, when are you going to enter an EMMA sound-off competition????

[stj174]

Waisay, when are you going to enter an EMMA sound-off competition????

Omar bhai, I still have a looooong way to go before i can even think about competing in any such car audio competition

[stj174]

After reading a few reviews and recommendations over DIYMA, specially by Andy Wehmeyer. I wanted to try the JBL sub in a ported enclosure. Got an enclosure made as per JBL recommended tuning frequency and volume (32hz, 2cuft net). Lets see how is sounds.

[blacklist1]

After reading a few reviews and recommendations over DIYMA, specially by Andy Wehmeyer. I wanted to try the JBL sub in a ported enclosure. Got an enclosure made as per JBL recommended tuning frequency and volume (32hz, 2cuft net). Lets see how is sounds.

ye cheeeez

[roms]

After reading a few reviews and recommendations over DIYMA, specially by Andy Wehmeyer. I wanted to try the JBL sub in a ported enclosure. Got an enclosure made as per JBL recommended tuning frequency and volume (32hz, 2cuft net). Lets see how is sounds.

I am sure this JBL will go mad at this tuning. Espicially the port area is perfect for 32hz tuning in your setup. If you ever want to change encl, please do consider my those 2 cents.

[krieger]

After reading a few reviews and recommendations over DIYMA, specially by Andy Wehmeyer. I wanted to try the JBL sub in a ported enclosure. Got an enclosure made as per JBL recommended tuning frequency and volume (32hz, 2cuft net). Lets see how is sounds.

So how does it sound??

[stj174]

ye cheeeez

haha ty

I am sure this JBL will go mad at this tuning. Espicially the port area is perfect for 32hz tuning in your setup. If you ever want to change encl, please do consider my those 2 cents.

Taimoor bhai I do have all your recommendations in mind and i do appreciate them. This was more of a test enclosure (beta version :P) to see how the sub responds in ported enclosure.

So how does it sound??

I was expecting poor transient response, boomy bass, sub giving out its location, lack of accuracy, SPL mohaole and other discrepancies which are associated when one thinks of a ported enclosure for SQ application. But to my surprise i experienced none of the above. The sub has become more transparent, efficient and has added better bass extension. Happy with how it sounds and now i know through my experience why people at DIYMA were advocating strongly to use the said sub in a ported enclosure.

[rustam54]

Ek desi sa swal hai ji. Yeh low bass extension wenshion, transparency sharency k nahi maloom ji,

Yeh btaen k Bally Sagoo ka "Chura Liya Hai" bajay ga???

Nahin to phir Hall Road ki petti zyada achi nahin?? Kiya to ap ne bhi wohi kaam hai. Bana banaya ley letay

[stj174]

Ek desi sa swal hai ji. Yeh low bass extension wenshion, transparency sharency k nahi maloom ji,

Yeh btaen k Bally Sagoo ka "Chura Liya Hai" bajay ga???

Nahin to phir Hall Road ki petti zyada achi nahin?? Kiya to ap ne bhi wohi kaam hai. Bana banaya ley letay

haha, Nauman Bhai, "Chura Liya Hai" ka to sahi se pata nahi, but "Baby Doll Mai Sonay Di" fit bajay ga

[Talhadon]

haha, Nauman Bhai, "Chura Liya Hai" ka to sahi se pata nahi, but "Baby Doll Mai Sonay Di" fit bajay ga

Time for "Pitbull - Bon Bon"

[Bad_Cheetah]

The best i've heard so far!

[stj174]

The best i've heard so far!

Thanks Yawar bhai

[hamza_xeg]

splendid job, sir.