want to buy a good car audio system

navin · 21st September 2005, 12:08

I think the best wayo to end this is to use an SPL meter at the location of the ear in both cases and turn up the amplifer volume calibrated by a meter.

Autophile · 21st September 2005, 12:10

Still you are quite senior. I was just born when you were designing your amps and speakers.

navin · 21st September 2005, 12:12

well i dont pull rank or age on anyone. i respect your opinions just the same.

navin · 27th September 2005, 13:48

Quote:

Originally Posted by Autophile

I am not denying the 3dB gain in either case...I am saying that the inverse square law of loudness comes into play with the distance, and percieved loudness depends on distance majorly...Distance of ears from the sound source...

ok i went through some on my bookmarks and then i remembered the Sigfried Linkwitz had done a lot of work in this area in his effort to kill the distortion that non linear excursion creates...

I was going to PM this to JB, but i figured others might benefit from this too.

Sigfried's site address is:
http://www.linkwitzlab.com/thor-design.htm (see the closed box and max spl excel spreadsheets). he also has a useful FAQ on his website.

other links worth reading is:
http://forum.ecoustics.com/bbs/messa...79/109138.html
and
http://www.rdrop.com/users/billmc/hp48/spkr.doc.txt
and
http://www.textfiles.com/computers/D...ON/perfect.txt

Sam Kapasi · 27th September 2005, 14:50

Quote:

Originally Posted by Autophile

And sam you can listen to stereo image and soundstage in our cars. They exist on our cars dashboard and speakers disappear.

I am sure that it can be achieved with good equipment and a good install. Cheers

rsjaurr · 4th October 2005, 22:24

Hi Guys

I am back again.....Thanx for ur help so far.

I have decided that i will get Alpine 9847 HU and Amplifier from USA and Infinty speakers from India as i can get better service.

Sam i contacted Balmeet and he referred me to Parneet Paul.I will buy infinty spk from him.

But guys i need ur advice about the choice of amplifier.

I have zeroed on two...

1] Sony XM-4060GTX----http://www.crutchfield.com/S-nvJCHsh...20&I=158XM4060

2] Alpine MRP-F240----http://www.crutchfield.com/S-nvJCHsh...0&I=500MRPF240

Which is better?What i can make out is though sony delivers more power but alpine has better features.

And Navin u have mentioned many times on this website that HU with Preamp volt of 4 is better than 2 v,then howcome alpine delivers best sound?[Almost all alpine HU have 2 v preamp voltage.]
can i get good quality wiring/dynamat stuff from here?

Plz be quick friends..........

Thanx in advance.....

Ravinder

navin · 4th October 2005, 22:27

Get the Alpine. it will sound nicer.

gunbir · 5th October 2005, 00:24

SSA Ravinder... Like Navinji said, its a no brainer... get the Alpine. We stock a complete range of materials for building boxes, grills, dynamat, cables, dist blocks, caps... whatever else you need is available here... so dont worry... get your equipment first

Autophile · 5th October 2005, 11:33

Ravinder of the two amplifier the Alpine is much better. But as you are in US (I guess) the best amp I can recommend is MB Quart Reference RA4200..great amplifer..to this second choice will be Alpine.

If you can then definitely go for MB Quart. Sending you the link for RAA2400 (2 channel) see if you can get RAA4200 also for the same price.

http://www.crutchfield.com/S-Vskq6pW...9RAA2400&g=120

navin · 5th October 2005, 11:39

for $50 more you can get a 12" subs too

http://www.crutchfield.com/S-Ir7R8eL...50&I=700RAPW12

or for $80 more you get the 15" sub
http://www.crutchfield.com/S-Ir7R8eL...50&I=700RAPW15

Autophile · 5th October 2005, 11:49

Yeah thats a very good deal but I guess Ravinder is looking for a 4 Channle amp and you get subwoofers packaged with only 2 Channel and mono amplifiers.

If he can afford he can go for both. It will result in cracking system.

4 Channel : MB Quart RAA4200
2 Channel : MB Quart RAA2400 + 12" or 15" Sub.

What car he wants to install it in (Don't remember)

navin · 5th October 2005, 11:58

oh your link in post 84 confused me.

rsjaurr · 5th October 2005, 17:00

Hi Guys

Thanx for huge response.Now i can say [ofcourse with ur help] that i have reasonable knowledge of car audio system.
And i own Getz,Ebony Black.

I live in Batala [Gurdaspur] and not in USA.Infact my relatives live there and one family is coming on 10th oct for marriage and my in-laws in Dec/Jan[cant wait that long].So i have to decide early so that i can get the stuff on 10th.[I hope they bring it as they will come with their bags full].

MB Quart RAA2400 is 2 channel amplifier and i need 4-channel one.
Also MB quart 4200 is out of stock.

If i go for MB Quart RAA2400 with Subwoofers,it will be beyond my budget [800$].My original budget was 600 and i also missed crutchfield's 15% discount.As there is very less time,my relatives may well have to buy from a store.

Well i can go for Reference RAA2400 2-channel amp
PWE 304 12" subwoofer package if i dont go for rear speakers.How about that.[To be frank,i dont need too much bass as i am a doctor] and i can always buy it later.I plan to add amplified tube later if i am not satisfied with speakers.

I can only prey that my relatives do have enough space in their bags for my stuff.

Plz keep coming with ur advice.

bye for now

rsjaurr · 5th October 2005, 19:56

Hey guys.....any idea how much will be the custom duty and other taxes which i might have to pay when stuff arrives here?

Thanx

gunbir · 6th October 2005, 00:54

about 35-40% of retail value

21st September 2005, 12:08	#76
navin Team-BHP Support Join Date: Mar 2004 Location: Mumbai Posts: 25,285 Thanked: 9,457 Times	I think the best wayo to end this is to use an SPL meter at the location of the ear in both cases and turn up the amplifer volume calibrated by a meter.
	() Thanks

21st September 2005, 12:10	#77
Autophile BHPian Join Date: Sep 2005 Location: New Delhi Posts: 931 Thanked: 4 Times	Still you are quite senior. I was just born when you were designing your amps and speakers.
	() Thanks

21st September 2005, 12:12	#78
navin Team-BHP Support Join Date: Mar 2004 Location: Mumbai Posts: 25,285 Thanked: 9,457 Times	well i dont pull rank or age on anyone. i respect your opinions just the same.
	() Thanks

4th October 2005, 22:24	#81
rsjaurr BHPian Join Date: Sep 2005 Location: Batala Posts: 777 Thanked: 28 Times	amplifier choice Hi Guys I am back again.....Thanx for ur help so far. I have decided that i will get Alpine 9847 HU and Amplifier from USA and Infinty speakers from India as i can get better service. Sam i contacted Balmeet and he referred me to Parneet Paul.I will buy infinty spk from him. But guys i need ur advice about the choice of amplifier. I have zeroed on two... 1] Sony XM-4060GTX----http://www.crutchfield.com/S-nvJCHsh...20&I=158XM4060 2] Alpine MRP-F240----http://www.crutchfield.com/S-nvJCHsh...0&I=500MRPF240 Which is better?What i can make out is though sony delivers more power but alpine has better features. And Navin u have mentioned many times on this website that HU with Preamp volt of 4 is better than 2 v,then howcome alpine delivers best sound?[Almost all alpine HU have 2 v preamp voltage.] can i get good quality wiring/dynamat stuff from here? Plz be quick friends.......... Thanx in advance..... Ravinder
	() Thanks

4th October 2005, 22:27	#82
navin Team-BHP Support Join Date: Mar 2004 Location: Mumbai Posts: 25,285 Thanked: 9,457 Times	Get the Alpine. it will sound nicer.
	() Thanks

5th October 2005, 00:24	#83
gunbir Senior - BHPian Join Date: Sep 2005 Location: New Delhi Posts: 2,465 Thanked: 33 Times	SSA Ravinder... Like Navinji said, its a no brainer... get the Alpine. We stock a complete range of materials for building boxes, grills, dynamat, cables, dist blocks, caps... whatever else you need is available here... so dont worry... get your equipment first
	() Thanks

5th October 2005, 11:33	#84
Autophile BHPian Join Date: Sep 2005 Location: New Delhi Posts: 931 Thanked: 4 Times	Ravinder of the two amplifier the Alpine is much better. But as you are in US (I guess) the best amp I can recommend is MB Quart Reference RA4200..great amplifer..to this second choice will be Alpine. If you can then definitely go for MB Quart. Sending you the link for RAA2400 (2 channel) see if you can get RAA4200 also for the same price. http://www.crutchfield.com/S-Vskq6pW...9RAA2400&g=120 Last edited by Autophile : 5th October 2005 at 11:34.
	() Thanks

5th October 2005, 11:39	#85
navin Team-BHP Support Join Date: Mar 2004 Location: Mumbai Posts: 25,285 Thanked: 9,457 Times	for $50 more you can get a 12" subs too http://www.crutchfield.com/S-Ir7R8eL...50&I=700RAPW12 or for $80 more you get the 15" sub http://www.crutchfield.com/S-Ir7R8eL...50&I=700RAPW15 Last edited by navin : 5th October 2005 at 11:43.
	() Thanks

5th October 2005, 11:49	#86
Autophile BHPian Join Date: Sep 2005 Location: New Delhi Posts: 931 Thanked: 4 Times	Yeah thats a very good deal but I guess Ravinder is looking for a 4 Channle amp and you get subwoofers packaged with only 2 Channel and mono amplifiers. If he can afford he can go for both. It will result in cracking system. 4 Channel : MB Quart RAA4200 2 Channel : MB Quart RAA2400 + 12" or 15" Sub. What car he wants to install it in (Don't remember)
	() Thanks

5th October 2005, 11:58	#87
navin Team-BHP Support Join Date: Mar 2004 Location: Mumbai Posts: 25,285 Thanked: 9,457 Times	oh your link in post 84 confused me.
	() Thanks

5th October 2005, 17:00	#88
rsjaurr BHPian Join Date: Sep 2005 Location: Batala Posts: 777 Thanked: 28 Times	Hi Guys Thanx for huge response.Now i can say [ofcourse with ur help] that i have reasonable knowledge of car audio system. And i own Getz,Ebony Black. I live in Batala [Gurdaspur] and not in USA.Infact my relatives live there and one family is coming on 10th oct for marriage and my in-laws in Dec/Jan[cant wait that long].So i have to decide early so that i can get the stuff on 10th.[I hope they bring it as they will come with their bags full]. MB Quart RAA2400 is 2 channel amplifier and i need 4-channel one. Also MB quart 4200 is out of stock. If i go for MB Quart RAA2400 with Subwoofers,it will be beyond my budget [800$].My original budget was 600 and i also missed crutchfield's 15% discount.As there is very less time,my relatives may well have to buy from a store. Well i can go for Reference RAA2400 2-channel amp PWE 304 12" subwoofer package if i dont go for rear speakers.How about that.[To be frank,i dont need too much bass as i am a doctor] and i can always buy it later.I plan to add amplified tube later if i am not satisfied with speakers. I can only prey that my relatives do have enough space in their bags for my stuff. Plz keep coming with ur advice. bye for now
	() Thanks

5th October 2005, 19:56	#89
rsjaurr BHPian Join Date: Sep 2005 Location: Batala Posts: 777 Thanked: 28 Times	Hey guys.....any idea how much will be the custom duty and other taxes which i might have to pay when stuff arrives here? Thanx
	() Thanks

6th October 2005, 00:54	#90
gunbir Senior - BHPian Join Date: Sep 2005 Location: New Delhi Posts: 2,465 Thanked: 33 Times	about 35-40% of retail value
	() Thanks

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