The *Active* ICE Discussion Thread

[BHAGWAN]

Originally Posted by clipto333

I dont think we were discussing TA in particular. Please read the post No. 127. navinji said "Gunbir and B&T might be able to list those that do"

It was started by Active V/S Passive - Post # 107 & 108 I think.

TA was never asked for my Million Swords - I think !!!

[gunbir]

Originally Posted by BHAGWAN

However, if you do not have Stegs, then which HU can be used ? That is how this topic has been progressing.

If Steg's are not being used, then Which HU can be used to do this ?
That is the Million Dollar Question.

In fact many amplifiers will let you do the same architecture. Some do it with HW modules, some do it with precision pots (knobs), some with digital interface. While accuracy of each method may differ, the concept is the same.

So the answer to your question is: there is no one box HU solution that will let you do Active Front 2way + Active Rear 2way + Sub.

[clipto333]

Originally Posted by BHAGWAN

It was started by Active V/S Passive - Post # 107 & 108 I think.

TA was never asked for my Million Swords - I think !!!

Sir,

I didn't start anything. i just replied to navinji. That's it. It were your questions which were being answered. I think navinji thought you would need TA with active XO's so he asked Gunbir and b&t if they could list amps that can do TA. Whats so confusing in that?

The active vs passive thing was over in a few posts and shifted to you wanting to reinstall you setup in RS actively plus the discussion on HU that can do active.

cheers

[navin]

Originally Posted by gunbir

So the answer to your question is: there is no one box HU solution that will let you do Active Front 2way + Active Rear 2way + Sub.

B, there you have it.

[sk456]

Originally Posted by clipto333

OT.

Hi sk,


Sk, how much did you buy the HU for? does it have an xo and eq? iirc, your HU doesn't have an xo but im confused about the eq part. what about mp3? sorry for asking too many questions.

oh, i will google the info if i can find something.

cheers.

P.S. - A lengthy audition is due sk. im gonna visit delhi soon and it will be an audio only trip. No distractions lol. I did listen to your setup for a few minutes but it would have been great if i had the time.

No EQ, NO XO. NOO MP3 .Simple playback with jsut a sub level and bass.treble ,balance fader adjsutments only . I paid 23K for it about 2 yrs ago. I am talking about the Kenwood KCD 01 that I have in my car .( not to confuse with the HX D2 that was being discussed .- which is a a killer HU IMO- which iunfortunatly only santa can give me .)

Auditions are always available for music lovers.

[clipto333]

Originally Posted by sk456

No EQ, NO XO. NOO MP3 .Simple playback with jsut a sub level and bass.treble ,balance fader adjsutments only . I paid 23K for it about 2 yrs ago. I am talking about the Kenwood KCD 01 that I have in my car .( not to confuse with the HX D2 that was being discussed .- which is a a killer HU IMO- which iunfortunatly only santa can give me .)

Auditions are always available for music lovers.

Thanks sk. I was confused what it did. Its a beautiful Head Unit.

Will send you a PM when im in Del.

cheers
clip

[BHAGWAN]

Originally Posted by navin

B, there you have it.

Originally Posted by gunbir
So the answer to your question is: there is no one box HU solution that will let you do Active Front 2way + Active Rear 2way + Sub.

Thank you;

I rest my case.

[St. Anger]

I have a Santro and am currently running the following setup,

Amplification: 2*4 ch amps = 8 channels of amplification.

Speakers: 2 pairs of 6.5'' 2-way components.
Sub: One 12'' sub in a sealed enclosure.

Head Unit: Clarion DXZ 775 USB

Currently, the components are running off one 4 ch amp and the sub is running off 2 bridged channels of the other amp.

My brains been wandering recently between studies and the following came to my head.

The Mid-bass driver is mounted on Mdf ring on the door and the tweeter some 10'' above it. I have a 4'' co-ax lying around, which would fit the stock, in-dash location in the Santro.

As my HU has on-board 3-Way Active crossovers, i'm thinking if
the 4'' co-ax can be linked to the two-way components and wired to the HU crossover to go 3-way active Jugaad style. Thus, in total, 6 ch of amplification would be required and the remaining 2 channels, bridged to drive the sub as usual.

• Is such a set-up possible ?
• The improvement / degradation in SQ from doing so ?
• The stress on the individual components and the electricals?
• As little as i understand, a capacitor will have to be wired in series with the 4'' driver to tune it to the vocal frequencies.
• So assuming that i have indeed been on the right track so far, i'll have a 6.5'' driver on mdf ring in the door that'll be fed mid-bass, a 4'' driver in the stock dash location that'll be fed mid-range(vocal) and a tweeter in the door that'll be fed the high frequencies.
• The other pair of components fitted on the rear doors shall be run off the HU and the sub from the two remaining amp channels.

Awaiting your comments and expert guidance.

[St. Anger]

Guess the ICEPerts are busy. Anyways, i'm going DIY on this hack job today. Will keep the updates coming. Hoping to be assisted by the ICEPerts on this one.

[low_bass_makker]

Originally Posted by St. Anger

• Is such a set-up possible ?
• The improvement / degradation in SQ from doing so ?
• The stress on the individual components and the electricals?
• As little as i understand, a capacitor will have to be wired in series with the 4'' driver to tune it to the vocal frequencies.
• So assuming that i have indeed been on the right track so far, i'll have a 6.5'' driver on mdf ring in the door that'll be fed mid-bass, a 4'' driver in the stock dash location that'll be fed mid-range(vocal) and a tweeter in the door that'll be fed the high frequencies.
• The other pair of components fitted on the rear doors shall be run off the HU and the sub from the two remaining amp channels.

Awaiting your comments and expert guidance.

• yes
• It will improve SQ
• no stress if configured properly
• yes a cap and a inductor also as the cap will be a High pass filter and the inductor will be a Low pass because if both the 4 inch and the tweeter will be playing the high freq which is not correct. Same will go for the midbass. The midbass HPF can be controlled from the amp but a indcutor will be need for the cut off the high freq.
• ok report.
• ok here also.

If you have 8 channels. Try getting a 3 way active crossover so that you can control everything everything active. and no need for passive crossovers.

[St. Anger]

LBM Bhai, thanks for the encouraging news. As of now, i couldn't work on my car. Spent the entire day installing ICE in a Marina and my friends Santro instead.

With the three way setup, this noob will need guidance, somewhere on the lines of ''3-way active for dummies''.

You have said that i should try getting a 3 way active crossover, but my HU features 'Digital 3 way cross over', from this i gathered that i will not need an external cross over, all i'll need is 6 channels of amplification. Am i on the right track or have i gone off track ?

Also, please elaborate on the values of the cap and the inductor required, along with the wiring requirements.

[low_bass_makker]

Originally Posted by St. Anger

You have said that i should try getting a 3 way active crossover, but my HU features 'Digital 3 way cross over', from this i gathered that i will not need an external cross over, all i'll need is 6 channels of amplification. Am i on the right track or have i gone off track ?

Also, please elaborate on the values of the cap and the inductor required, along with the wiring requirements.

you can do it with your HU but it will do 3-way not 4-way active which you want. You would need external 3-way for the tweeter, midrange, midbass. You can control the sub from the HU directly. Give a 80 hz HPF singal to the crossover and control all the freq from there.

The value of caps and inductor will depend on the cross over points you choose. But I would recommend a active setup here.

[St. Anger]

• Hmmm.......... now how do i go active with the setup frm here?
• How do i begin?
• Do the cross over points depend on the frequency specifications of the drivers being used.
• What are the other things to look out for ?

See, i told you i really am in Kindergarten when it comes to my ICE journey.

[St. Anger]

Is there any place where i can get cross-overs OTC or do i need to make one for myself. If so, then i'm afraid i have an uphill task on my hands. SOS !

[Flying Bong]

Originally Posted by St. Anger

The Mid-bass driver is mounted on Mdf ring on the door and the tweeter some 10'' above it. I have a 4'' co-ax lying around, which would fit the stock, in-dash location in the Santro.

As my HU has on-board 3-Way Active crossovers, i'm thinking if
the 4'' co-ax can be linked to the two-way components and wired to the HU crossover to go 3-way active Jugaad style. Thus, in total, 6 ch of amplification would be required and the remaining 2 channels, bridged to drive the sub as usual.

You could try the following:

1. Disconnect the tweeters from your component set.
2. Mount the 4" coax in the stock location in the dash
3. The 4" coax is already a passive 2-way speaker. High-pass it using your HU active crossover and connect to 2 channels of your 4-channel amp 1
4. Bandpass the 6.5' midbass drivers using your HU active crossover, connect to other 2 channels of your 4-channel amp 1
5. Lowpass your sub using your HU active crossover, connect to bridged 2channels of your 4-channel amp (as you are currently doing.)

In this manner, your are using the tweeters of your coaxes and the passive XO connecting them to the 4" driver.

Pros - you have a true 3-way front stage without need for any external crossovers, also because your tweeter & midrange (in this case the 4" coax driver itself) are coaxially mounted, you should get a more coherent sound.

Cons - the tweeter on the coax may not be as good as those on your compnents, you cannot select crossover point/ slope b/w tweeter & midrange, no separate level adjustment for tweeter & midrange either.

It may sound a lot better than you expect. Try it out and see if you like it, and let us know