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Old 8th June 2007, 14:40   #16
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Dear LBM paaji, it would be an honour to meet fellow members such as your self. But sadly, my perennial exam schedule means that I would not be able to attend the meet.

But please let that not keep you away from making my system sound better. Krupya help kijiye.
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Old 8th June 2007, 14:49   #17
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Note to moderator: Please note that your system can only be made to sound better at Sea Lord.
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Old 8th June 2007, 14:55   #18
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guess thats where the masters will unleash their audio tuning expetise for display! Not to be missed if you are in Mumbai. Sigh..
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Old 8th June 2007, 15:03   #19
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Quote:
Originally Posted by navin View Post
no midbass in the front. I thnk that is the first thing you shoudl do. add a pair of midbass drivers in the front.

How about Morel components, how does it sound compared to the competition? I can get it thru a friend abroad. Do you think its better than JBL?

And should I go in for 51/4 or 6.5" components for M800? Assuming Thouqeer will do the install.
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Old 8th June 2007, 17:08   #20
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Quote:
Originally Posted by Sam Kapasi View Post
Note to moderator: Please note that your system can only be made to sound better at Sea Lord.
My system, at Sea Lord?
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Old 8th June 2007, 17:12   #21
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Quote:
Originally Posted by gopz View Post
How about Morel components, how does it sound compared to the competition? I can get it thru a friend abroad. Do you think its better than JBL?

And should I go in for 51/4 or 6.5" components for M800? Assuming Thouqeer will do the install.
Morel is in a different league and has very differnt sound as JBL.

If you can fit 6" components by all means get them.
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Old 8th June 2007, 17:43   #22
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Quote:
Originally Posted by navin View Post
My system, at Sea Lord?
No sir, the note was made to ported underscore head.
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Old 8th June 2007, 22:52   #23
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Quote:
Originally Posted by gopz View Post
How about Morel components, how does it sound compared to the competition? I can get it thru a friend abroad. Do you think its better than JBL?

And should I go in for 51/4 or 6.5" components for M800? Assuming Thouqeer will do the install.
Morel are different sounding and the JBL are different but JBL is loved by everyone so it is a safer bet ...you might not like there sound....so try auditioning them before the buy....

Quote:
Originally Posted by navin View Post
Morel is in a different league and has very different sound as JBL.

If you can fit 6" components by all means get them.
Any day 6.5 inch ......

Quote:
Originally Posted by Sam Kapasi View Post
No sir, the note was made to ported underscore head.
But would love to listen to Navin Ji custom crossovered car.....
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Old 15th October 2008, 15:34   #24
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Guys,

I need help with the LPF, HPF setting on my AMP and/or
HU.

Here is what I have:
Front: Boston components (not sure if it is 4 inch or 5.25 inch)
Back: Boston FX 93 6X9 coaxials
Sub: JBL GT5-12 in a bass tube
HeadUnit: Sony MEX-R1

Front and Back speakers are powered by JBL GTO 75.4 amp
Sub is powered by JBL GTO 3501 amp.

The car in which above setup is Getz GVS 1.3 petrol.


I recently added the amps, sub and some damping. After the
addition, though the sound is much better than what it was
before, I think there is still room for improvement.

Besides since it is a hatchback, I need to remove the sub once
in a while and when there is no sub, there is absolutely
no bass. It is simply flat with the current setup. I tried to
explain this to my tuner but he doesnt seem to be all that
knowledgeable.

Anyways, here are the settings I currently have in my HU:
LPF is set to OFF (other available settings are 78, 125)
HPF is set to 78 (other available settings are OFF and 125)
The setting for SUB in the HU is set half-way between - and +
The setting for Bass and treble is set close to -

The cross over settings for the front components is set at 0 db.
The other settings available are -2 and -4.

I see the following settings available in JBL 75.4:
================================================== =
For Rear speakers:
-----------------
Input level (between 6v to 250mV),
Frequency level (32 Hz to 320 Hz),
Bass boost (0db to 12db),
Mode (set to FLAT (other options are LPF and HPF))

For Front speakers:
-------------------
Input level (between 6v to 250mV),
Frequency level (32 Hz to 320 Hz),
Mode (set to FLAT (other options are LPF and HPF))

I am not sure what are the settings I currently have for
InputLevel, Frequency Level, BassBost because the screw
to tune is like a X and I am not sure what value I should
take.

I see the following settings available in JBL 3501:
================================================== =
Input Level 6v to 100mv
LP Frequency 32Hz to 320 Hz
HP Frequency 10 Hz to 100 Hz
Boost 0db to 12db

Please let me know what would be the best possible settings
in my AMP and/or HU such that I can extract maximum bass
and at the same time do not blow my speakers or sub.

Sorry for the long post and thank you for your help.
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Old 16th October 2008, 13:57   #25
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@drvhplyevraftr, you should get together with Hyd TBHPians like rider60 etc. and do the tuning together.

There is nothing substantially wrong in your settings. Not enough bass from the front / rear speakers, in the absence of the sub, seems to be inherent property of the drivers you have chosen. Possibly the only correction could be setting HPF off on the HU, if that makes any difference with the drivers. The 6x9 should giveout decent bass in any case. If the front components are 5.25" the bass is likely to be limited, more so if 4". Please differentiate between mid-bass (~80Hz and above, given out by the front and rear) and bass (~35-80Hz, given out by the sub) - a bit of tuning might help.

And, remember to tune your system WITHOUT the sub first, so that you know what is the inherent capability of those Boston speakers.

Some points:
* If the setting knob is confusing because of the X slot on it, turn the knob to one extreme and mark with a dot of nail polish on the knob against the - or / on the scale. Turn it to the opposite extreme and confirm the correctness of location
* On the HU, set bass and treble controls 0 (- in your case, I think)
* If there is a separate Sub output from your HU connected to the sub amp, then your Sub setting is right
* If LPF/HPF is set at the HU, Flat setting (as opposed to HPF or LPF) on the 4-ch amp is correct
* Crossover settings are OK (unless you find the front components too bright)
* On the sub amp (3501) Input level should be tuned to your need. LP frequency should be 80, HP frequency does not matter (set HPF Off), Bass boost should be 0dB
* Your speakers are unlikely to blow unless you listen to music for a long sustained period at a very high volume (difficult to specify exactly at what power output they will blow). They should start sounding really awful much before they blow
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Old 16th October 2008, 14:52   #26
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Thank you for your help DerAlte.

I think there was much more bass from the front and rear speakers before install
of the AMPS (JBL 75.4 and JBL 3501) and sub. So, I guess it just requires more
tuning.

My AMPs are placed beneath the front seats, so I will have to remove them before
I can try out different settings.

Also, I tried to set the HPF on my HU to OFF but when the volume was increased
beyond 1/3 of the max setting, I could hear some phat phat sound from my
front components.

Anyways, like you mentioned I shall first try to tune my system without the
sub and then include the sub and tune further.

I shall try it out this weekend and see if I can make any difference.

Thank you for your help once again.
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Old 17th October 2008, 01:21   #27
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Quote:
Originally Posted by drvhplyevraftr View Post
Thank you for your help DerAlte.

I think there was much more bass from the front and rear speakers before install
of the AMPS (JBL 75.4 and JBL 3501) and sub. So, I guess it just requires more
tuning.

My AMPs are placed beneath the front seats, so I will have to remove them before
I can try out different settings.

Also, I tried to set the HPF on my HU to OFF but when the volume was increased
beyond 1/3 of the max setting, I could hear some phat phat sound from my
front components.
@drvhplyevraftr: I guess you have to control the volume of the HU at which you will be listening most of the time. It is said that you should tune the system keeping the HU volume at 75% of the max, but in my case it was just kept at 40% (I guess) since my preamps were 5V outputs and it was really loud. never reached the volume of my HU to 50% till now :-)

Since, the 75.4 is a very powerful amp and during the tunning the power out put may go high beyond the range of your speakers then you may damage them. So I would suggest you to keep the input levels low and can have more volume in HU.

I also remove my sub when I have to go to stations n airport, but luckly have the preset equalizer (Super Bass) in my HU which compensates bass to some extend, try out if you have such provision in your HU.

Another suggestion would be that you can tune the system in phases like first connect only front, then only rear and then front and rear and at last the sub. This way you can clearly make it out each of them. And I think it makes tunning the system little easier.

You can always have gurus like Rider60, Rocksterraghu and others who can help you tune the system.
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Old 17th October 2008, 11:28   #28
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Quote:
Originally Posted by vrrraju View Post
@drvhplyevraftr: I guess you have to control the volume of the HU at which you will be listening most of the time. It is said that you should tune the system keeping the HU volume at 75% of the max, but in my case it was just kept at 40% (I guess) since my preamps were 5V outputs and it was really loud. never reached the volume of my HU to 50% till now :-)

------

You can always have gurus like Rider60, Rocksterraghu and others who can help you tune the system.
Yes, 75.4 seems to be a very powerful AMP. Earlier the sound (though
it lacked clarity) which I used to hear from my speakers at about 50%
of my HU max volume setting without the AMP, I am now hearing with
clarity at about 20% of my HU max volume setting.

Like you and DerAlte had mentioned, I am going to tune it myself this
weekend in phases and see if I can get some satisfactory results. If not,
then I will have to resort to the gurus.
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Old 23rd October 2008, 12:15   #29
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Can you please review my configuration/settings for my Spark -

HU: Blau MP47
Front: Illusion EL4.1 components
Rear: Blau GT 6" components on parcel tray
Amp: Kenwood 8401
Sub: 10" Kicker

Amp is set to HPF @ 80 for front channel
Both Sub and rear speakers are connected in parallel to AMP on second channel with HPF/LPF set to OFF.
Sub pre-out is not used.

Also, current Kicker 10" sub is temporary as no other 10" sub was available. What are other option in 10" sub? (Spark boot size verrrry small)
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Old 23rd October 2008, 12:19   #30
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I have a Polk 10" in my boot. I think JBL also has 10" subs which are readily available (atleast in Bangalore)
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