Car Audio Advice from the Audio Gurus: Use "Search thread" before posting a new Q!

mclaren1885 · 11th November 2005, 10:50

Quote:

Originally Posted by AvinashKeezh

hey mac,
was the idea of changing the front speakers to the blaupunkt 4" a dumb one... i had changed them just because i thought it would last me some time and more over, i felt they sound good... so is it really necessary to change them to 5 1/4 compos!!! navin any takes... :( coz i wouldn't want to invest again on the fronts!!!
i'll do the sub and the amp as mentioned .. pio 306 and the sony 504 (how much with Bill & Warr?)
ak

well i wouldnt call it a dumb one at all...all such things do happen..but if you keep ur fronts and get a 6x9 from infinity at the back and a sub u will have the following problems :
1. your rears will drown out the fronts totally..so no front soundstage..
2. since ur using a sub and 6x9's u will have excessive bass as your 6x9's too will act as 8'' subs..so that will drown ur fronts even further..
3. by getting components for the front u can stick to ur factory 5x7 rears and get front soundstage..thats what one need when driving the car all by himself..
4. or else u can get the sub and the amp and set ur fader to the front and try to strike a balance between ur stock fronts and stock rears..that way you will have to spend on the amp and sub only..

i personally prefer option 3..i am sure the others will chip in soon..

btw the sony 504 is 5k with B&W..

mclaren1885 · 11th November 2005, 10:51

Quote:

Originally Posted by navin

JKDas, Mclaren, zzzehar please refer to my post 2360. INthe few posts immediately after this request you have used SMS terminology. Fortunately it was somewhat easier to read but it can snowball very fast. Please refrain from using SMS terms while posting on this forum.

ooppss..sorry modji..will keep in mind..wont be repeated..

mclaren1885 · 11th November 2005, 10:53

Quote:

Originally Posted by navin

Avi, you can use the 4" for the rear so you dont have to waste them.

no navin that way by using the 4'' at the back he will be wasting a pair of 5x7's that he has..so it would be better to waste the 4'' than the 5x7..thats what i think..

AvinashKeezh · 11th November 2005, 11:02

Quote:

Originally Posted by navin

Avi, you can use the 4" for the rear so you dont have to waste them.

navin, how do i go about fiting the ODx 402E on the rear????

Quote:

Originally Posted by mclaren1885

well i wouldnt call it a dumb one at all...
4. or else u can get the sub and the amp and set ur fader to the front and try to strike a balance between ur stock fronts and stock rears..that way you will have to spend on the amp and sub only..
i personally prefer option 3..i am sure the others will chip in soon..
btw the sony 504 is 5k with B&W..

the front speakers are not stock, i had changed them to blaupunkt ODx 402E..

but like navin said, i'll see if i can put them on the rear!!

..
and take 5 1/4 compos for the front and a sub for the rear along with the 5x7s.. using the amp to drive the sub and the fronts!!!

ak

navin · 11th November 2005, 12:37

to fit the 402 i the rear you'd have to make an adapter from MDF. the stock 5x7 might provide more bass than the 402e but the 402e might be better above 250Hz.

since you are getting a sub the 402 might be a good alternate to the 5x7 but then you would be wasting the 5x7. your choice.

Shrey · 11th November 2005, 12:50

Navin,
I have a weird query, i was just wondering why all(i suppose) speakers have a resistance of 4 ohms, irrespective of their shape sizes, type?

Autophile · 11th November 2005, 12:55

Quote:

Originally Posted by Shrey

Navin,
I have a weird query, i was just wondering why all(i suppose) speakers have a resistance of 4 ohms, irrespective of their shape sizes, type?

Shrey

The size of speaker has nothing to do with the impedance. The impedance is of wire winded on the voice coil. In car audio 4ohm is the standard impedance..thogh you can find 2 Ohm speakers with some manufacturers

Shrey · 11th November 2005, 14:16

Autophile,

I know Impedance/resistance of the speaker depends on Coil only and not on size of cone, magnet or shell etc. What i was asking is
1. why a standard of 4ohm was chosen.
2. why a 4 ohms tweeter and 4 ohms subwoofer, both fed from same source one by one gives different output( in terms of sound power output)
when we know that in both cases current in the coil will be same, so in case of speakers wattage looks like, is not decided by P= I(square)*R.( in this case it only equals to heat produced in wires and not the sound )
3. what is the limiting factor for current?(Thermal or linear displacement) what is the max. current a P watt (rms) speaker with R impedance can handle?

Navin please throw some light.

jkdas · 11th November 2005, 18:03

Quote:

Originally Posted by navin

JKDas, Mclaren, zzzehar please refer to my post 2360. INthe few posts immediately after this request you have used SMS terminology. Fortunately it was somewhat easier to read but it can snowball very fast. Please refrain from using SMS terms while posting on this forum.

sorry mod.

and in between, i see only one post of mine after the 2360th post and in it i mispelled 'was' as 'ws'. its not short message service(sms) lingo. its a spell mistake.

jkdas · 11th November 2005, 18:10

@ shrey : standarisation i guess. like you have the iso stuff, you know protocols and stuff.

zzzehar · 11th November 2005, 19:52

Quote:

Originally Posted by aseem

Welcome back Zehar, good to see you out here. How is your system doing? feedback?

Hi Aseem,
My system is Ok, I faced a problem with the head unit withing 2 days of getting it installed. the volume button on the head unit would work only when it wanted to.
The guy first tried replacing the face plate but still that didn't work, so he changed the whole unit for free ;-)

The speakers are undoubtly awesome, I am getting the 4 inchers by BOSS only for Rs 1200.

Also will all Sub and Amp soon.

aah78 · 11th November 2005, 20:18

Quote:

Originally Posted by AvinashKeezh

front speakers to the blaupunkt 4"

are these with the model number ODx402?
in your earlier post you've mentioned they were the thin type. i'm planning on putting the same ones on in a Zen, so just verifying.
ad

jkdas · 11th November 2005, 20:25

Quote:

Originally Posted by zzzehar

Hi Aseem,
My system is Ok, I faced a problem with the head unit withing 2 days of getting it installed. the volume button on the head unit would work only when it wanted to.
The guy first tried replacing the face plate but still that didn't work, so he changed the whole unit for free ;-)

The speakers are undoubtly awesome, I am getting the 4 inchers by BOSS only for Rs 1200.

Also will all Sub and Amp soon.

whats the mrp of those BOSS. just curious

srasania · 11th November 2005, 21:07

hey guys - i wanna ask - can i fit in 6 inch components for the front instead of the 5.25 inches ??..i mean is it possible to cut some metal in the speaker compartment and fit in 6 inchers?..
My car is a 2005 New Honda City .
p.s. - SAM,I was the one who met you at AV Expo at Grand Hyatt today !!

cheers,
sr

mclaren1885 · 11th November 2005, 21:23

Quote:

Originally Posted by srasania

hey guys - i wanna ask - can i fit in 6 inch components for the front instead of the 5.25 inches ??..i mean is it possible to cut some metal in the speaker compartment and fit in 6 inchers?..
My car is a 2005 New Honda City .
p.s. - SAM,I was the one who met you at AV Expo at Grand Hyatt today !!

cheers,
sr

well u can fix 6.5'' components,but u will have to make some slight mods to your car doorpads..and u will have to use mdf rings so that the cone wont touch ur glass..its quite possible..

oye sam !!!! u partying kya ??? hhhmm..no wonder he is not online for quite sometime now..

11th November 2005, 12:37	#2375
navin Team-BHP Support Join Date: Mar 2004 Location: Mumbai Posts: 25,418 Thanked: 9,993 Times	to fit the 402 i the rear you'd have to make an adapter from MDF. the stock 5x7 might provide more bass than the 402e but the 402e might be better above 250Hz. since you are getting a sub the 402 might be a good alternate to the 5x7 but then you would be wasting the 5x7. your choice.
	() Thanks

11th November 2005, 12:50	#2376
Shrey BHPian Join Date: Nov 2005 Location: Noida Posts: 38 Thanked: 0 Times	Speakers Navin, I have a weird query, i was just wondering why all(i suppose) speakers have a resistance of 4 ohms, irrespective of their shape sizes, type?
	() Thanks

11th November 2005, 14:16	#2378
Shrey BHPian Join Date: Nov 2005 Location: Noida Posts: 38 Thanked: 0 Times	Autophile, I know Impedance/resistance of the speaker depends on Coil only and not on size of cone, magnet or shell etc. What i was asking is 1. why a standard of 4ohm was chosen. 2. why a 4 ohms tweeter and 4 ohms subwoofer, both fed from same source one by one gives different output( in terms of sound power output) when we know that in both cases current in the coil will be same, so in case of speakers wattage looks like, is not decided by P= I(square)*R.( in this case it only equals to heat produced in wires and not the sound ) 3. what is the limiting factor for current?(Thermal or linear displacement) what is the max. current a P watt (rms) speaker with R impedance can handle? Navin please throw some light.
	() Thanks

11th November 2005, 18:10	#2380
jkdas Senior - BHPian Join Date: Sep 2005 Location: Thiruvananthapu Posts: 9,685 Thanked: 1,497 Times View My Garage	@ shrey : standarisation i guess. like you have the iso stuff, you know protocols and stuff. Last edited by jkdas : 11th November 2005 at 18:12. Reason: used u instead of you !
	() Thanks

11th November 2005, 21:07	#2384
srasania BHPian Join Date: May 2005 Location: Orlando, FL, USA Posts: 321 Thanked: 8 Times View My Garage	hey guys - i wanna ask - can i fit in 6 inch components for the front instead of the 5.25 inches ??..i mean is it possible to cut some metal in the speaker compartment and fit in 6 inchers?.. My car is a 2005 New Honda City . p.s. - SAM,I was the one who met you at AV Expo at Grand Hyatt today !! cheers, sr Last edited by srasania : 11th November 2005 at 21:08.
	() Thanks