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Old 13th August 2010, 19:59   #61
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Hey Gilead, that's a nice setup. Congrats. When it comes to ICE and Products in chennai, Nitrous is the man.

@Bt - What is the need for MS8, say if i have Eclipse 7200 MKII? Its purpose is to improve the stock HU's output or?.
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Old 13th August 2010, 20:06   #62
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Originally Posted by Bass&Trouble View Post
At what frequency have they been high-passed?

Billie Jean is not exactly a good track for mid bass. More so for sub bass. Use some house track. Something with a pounding kick-line.
High passed at 100 Hz. Sub LP-ed at 80 Hz. Crossover at REF as seen in the pic below. No idea what that custom REF is.
http://www.team-bhp.com/forum/attach...ce-005-50-.jpg
I am not too familiar with House so I don't have a reference point. Let me try Dave Mathews, Megadeth or Rush. At least I know what they sound like on a seriously hifi system.

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Hey Gilead, that's a nice setup. Congrats. When it comes to ICE and Products in chennai, Nitrous is the man.
.
Thank you Madhan. Did Nitrous brainwash you as well?
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Old 13th August 2010, 20:10   #63
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Thank you Madhan. Did Nitrous brainwash you as well?
You bet. :-) But that was just for a child setup. when i come back to india for good, i will be ready to be brainwashed again. :-)
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Old 13th August 2010, 20:10   #64
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From whatever I could gather, MS8 has the foll. advatanges:
- In quite a few cars, the HU is integrated with other features like steering mounted controls etc...with MS8, features like these do not get disturbed
- MS8 is making TA etc easier & automated which may not be possible with an ordinary HU or have to be done via an experienced installer. Also, the adjustments are pre-programmed & stored for different sitting positions and hence can be changed at will.

ooops..there I go blabbering again..
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Old 13th August 2010, 21:01   #65
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Originally Posted by Ford_madhan View Post
@Bt - What is the need for MS8, say if i have Eclipse 7200 MKII? Its purpose is to improve the stock HU's output or?.
It does not improve the stock HU's output per se. And anyway, you don't need to improve the output of a head like the 7200. The MS8 will automatically do a lot of processor settings that otherwise you would probably have trouble figuring out manually from the head unit.

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Originally Posted by Gilead View Post
High passed at 100 Hz. Sub LP-ed at 80 Hz. Crossover at REF as seen in the pic below. No idea what that custom REF is.
http://www.team-bhp.com/forum/attach...ce-005-50-.jpg
Ref means 0dB. i.e. no attenuation or boost.
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Old 13th August 2010, 21:06   #66
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Ref means 0dB. i.e. no attenuation or boost.
Then why do they write REF instead of just 0 db? I assumed it was some setting based on their R&D which they don't want to disclose.
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Old 13th August 2010, 21:15   #67
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Quote:
Originally Posted by Gilead View Post
Then why do they write REF instead of just 0 db? I assumed it was some setting based on their R&D which they don't want to disclose.


Because it refers to the reference level. i.e. when the tweeter is at this level, with all else equal, the system produces the flattest possible response.
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Old 14th August 2010, 12:04   #68
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Quote:
Originally Posted by Gilead
High passed at 100 Hz. Sub LP-ed at 80 Hz.
So, there's no sound produced in the 80-100hz band?
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Old 14th August 2010, 13:27   #69
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So, there's no sound produced in the 80-100hz band?
Nope. But I like the way it sounds now better than when the JLs were HP-ed at 80 Hz. What I want is mid bass in the JL. Not low bass. The Infinity is there for that.

Last edited by Gilead : 14th August 2010 at 13:36.
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Old 14th August 2010, 13:40   #70
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Originally Posted by Gilead View Post
Nope. But I like the way it sounds now better than when the JLs were HP-ed at 80 Hz.
But theoritically what nitrous says is right. You are missing a small band of frequency by HPFing your mid bass at 100 hz.

You many however not feel big difference because;
  • Rear fill - i hope you are running full range in there ?
  • Your slope on midbass might be 6db
Another thought on why you are not feeling the need for damping.
  • Your HPFing @ 100 Hz. If its 80Hz or lesser possibility that more bass is played upfront. and hence might need good dmaping for that to be audiable
  • Your are feeding 75 odd rms. so with all losses (Transmission loss, power loss due to Passive components, Lesser input voltage) its probably 20% less than than the rated rms.
The reason i am saying this is, my i10 doors with 2 full layers of noise kill on each side starts to jarr / vibrate after 60% volume. This not only becasue i10 build is bit fragile as compared to the Fiesta, but also i am feeding in almost double the power (145 odd rms)

Last edited by Mi10 : 14th August 2010 at 13:43.
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Old 14th August 2010, 13:42   #71
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Quote:
Originally Posted by nitrous View Post
So, there's no sound produced in the 80-100hz band?
It's not there is no sound between 80-100hz. Most of the amplifier and HU use 12db octave slope. Which means when sub is crossed at 80hz LPF there would freq rolloff upto to 120hz. It's the same with the speakers when it's HP at 100hz means there would roll off down to 70-80hz. However crossing the speakers at 80hz would be a better option.

Gilead: Good choice of equipments. I'd like to what's the internal volume of the Enclosure used for the sub? Have you crossed them off the HU and the Ext.Amplifier ?

Last edited by Invinsible : 14th August 2010 at 13:43.
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Old 14th August 2010, 13:42   #72
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Quote:
Originally Posted by Gilead
But I like the way it sounds now better than when the JLs were HP-ed at 80 Hz.
Now you know you need damping.

Last edited by nitrous : 14th August 2010 at 13:43.
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Old 14th August 2010, 15:00   #73
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Quote:
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Now you know you need damping.
Still sounds great without any ringing or distortion, but not the kind my ears like. I used to be a drummer in a previous life and I like the way the bass drum sounds when HP-ed at 100 Hz rather than at 80 Hz.
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Old 15th August 2010, 17:10   #74
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Hey Vijay,

The Build quality of Figo, is it the same as Fiesta.
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Old 15th August 2010, 17:23   #75
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Hey Vijay,

The Build quality of Figo, is it the same as Fiesta.
No dude. Fiesta is a different level of solid. NVH levels are much lower on a Fiesta.
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