[Bass&Trouble]

Originally Posted by navin

JK. Et Tu?

6x9 are designed to work in trunks of cars. this means a high Cms. This also leads to a highish Fs. Although a 6x9 has the Sd of a 8" most cannot produce as good bass as a competent 8" woofer leave alone 10, 12 or 15" woofers. The best 6x9 bass i have heard are the Boston Fx something.

High Cms? Isn't that Low Cms? If the 6x9's gonna be more compliant, won't the Fs actually be lower?

Probably, one of the biggest deficiencies in a coaxial 6x9's quest to produce resounding bass is the fact that they are just that...coaxial. With the cancellation caused due to an incomplete cone, it literally blows a hole into the speaker's bass aspirations.

[navin]

No the 6x9 has high CMs and is less compliant and hence the high Fs. Not having a dust cap is not a precurser to bad bass there are many woofers that have nice phase plugs instead os dust caps and provide good bass. However having all those mids and tweeters and all that stuff in front of the cone cannot help the bass.

[anadkarni]

I made a trip to TMC Electronics yesterday and met Venu. He seemed like someone in the know.

I was looking forward to hearing the output of my HU on the Blaupunkt and JBL models I was considering so far. However, unlike the dealer I had visited earlier, he didn't have any readymade speaker mounted consoles where I could plugin my HU and check the output out. That was disappointing. He suggested me to just go for an all JBL combo of GTO 936(rear) and GTO 426(front) instead on which he would offer a 7% discount. I was thinking "There goes my budget!! Sob!!" Also, aren't these speakers an overkill for the JVC KD-G413? I mean I certainly don't think I will "EVER(3)" buy an amp.

Had read in various threads before that TMC does a good installation job and was wondering what the premium for availing this superior service would be. As expected, I learnt that they charge Rs. 850/- for making the custom boxes for the rear speakers as opposed to Rs. 550/- that the previous dealer had quoted. Also, the installation charge would be Rs. 350/- which the other guy wasn't charging at all. Thought it to be a bit of a rip off. Then again, guess you have to pay to get a good job done!

Has someone ever seen an Alto with speakers fitted on the front surface (just below and ahead) of the rear seats? I saw someone who had. Wise idea?

Think I have an idea. Use the previous dealer's console for checking the output out. Then go to TMC for the actual installation.

Eeehaw! I am invincible!

[navin]

the 936 and 426 combo is nicer than the Blau GTx or JBL CS series but costlier too. You did not read Sound Maniac's warning did you? http://www.team-bhp.com/forum/car-en...ing-forum.html

The JVC will work ok with the JBL GTO series. Dont worry about that. You can add a 4 ch. amp later.

where exactly are you thinking of putting the 6x9 speakers. In front of teh rear seat? where?

[anadkarni]

Hee Hee!! Well, I am not planning to put the 6X9"s' there yet! :-)

Just saw someone who had. Wonder how and why he did it.

I think I'll do the installation in installments. Just the rear 6X9"s' this month. The 4"s' will have to wait for next month or the sale of my bike.. whichever comes first.

Will read the warning first.

[anadkarni]

Alrighty Folks! Finally, my car ROCKS!

With the valuable advice I got from some of you, I took the plunge and decided to treat my first car and ears to JBLs'.

Though I feel that I should perhaps have received a higher discount, considering the fact that I paid more than half the bill amount in hard cash (Boo Hoo... there goes my liquidity), I must say that TMC Electronics really does a very good installation job. I would recommend them to all my friends.

Navin, the 426 front pair and 936 rear pair, really makes a great combo. Vivek, thanks for the info you provided too.

After all the comments I had heard from a lot of guys about my JVC HU being a low end model, it does satisfy everything I was looking for. So much so, that I have to limit the bass on the HU to a max +02. I wonder if I would ever have to invest in that amp Navin mentioned.

Even the boxes are a job well done. Hats off to the designers!

Those wanting to see picture, please stand by. :-)

[Bass&Trouble]

Originally Posted by navin

No the 6x9 has high CMs and is less compliant and hence the high Fs. .

Ok, he's already bought a 6x9 but i cant help reiterating that if a speaker has a high Fs, it has a lower Cms.

My argument is thus.

1. Cms stands for compliance, not for stiffness, and can safely be assumed to be the exact opposite of stiffness in this case.

2. Higher the compliance (which also means lower stiffness), lower the natural resonant frequency, and vice versa.

3. Also, the unit for Cms is mm/N. i.e displacement per unit force. So for a lower Cms, the amount that the cone is displaced per unit force should be lower since they are directly proportional. This means that if Cms is lower, Fs and stiffness of the speaker are higher.

Correct me if I'm wrong.

[navin]

you are right B&T, my memory is backwards. Cms is 1/stifness I tried to derive it in my head and got N/mm (N is in Newtons and mm stands for milimeters) and hence had the whole thing upside down. thanks. atleast we were on the same page.

higher stiffness leads to a higher fs. and hence the rest is the same.

[Sam Kapasi]

Originally Posted by anadkarni

Alrighty Folks! Finally, my car ROCKS!

With the valuable advice I got from some of you, I took the plunge and decided to treat my first car and ears to JBLs'.

Though I feel that I should perhaps have received a higher discount, considering the fact that I paid more than half the bill amount in hard cash

Congratulations and it's always nice to know we helped someone buy a system rather than scare them away.
How much did you pay?

[Vivekphadnis]

I am glad you liked it. Which amp did you buy? Let us see some pics.

[navin]

Originally Posted by anadkarni

Those wanting to see picture, please stand by. :-)

awaiting pics. the amps will make the sound more relaxed esp at higher volumes.

[anadkarni]

Originally Posted by Sam Kapasi

Congratulations and it's always nice to know we helped someone buy a system rather than scare them away.
How much did you pay?

Hi Sam,
Thanks a lot! Will you be cross with me if I told you that I actually gave your name as a reference to get a 7% discount on the JBL speakers at TMC?

I paid 8.4 K in all. Here is the breakup:
GTO426 (2500/-) + GTO936 (4750/-) Less 7% discount = 6742.5/-
Antenna (250/-) + Harness (200/-) + Rear Boxes (850/-) = 1300/-
Installation Charges = (350/-)
Total = 8400/-
Paid in Cash (5000/-) + Paid by Card(3400/-) + Surcharge on amt paid by card(68/-)
Grand Total = 8468/-

Venu was out of town when I went for installation. Someome called Anant was around. I paid 5k in cash and the rest by card, because the guy said he was facing a cash crunch.

Do you think I could have received a cash discount for the amount I paid in cash? I remember somebody mentioning TMC offering a 2% cash discount to him on another thread.

[navin]

Originally Posted by anadkarni

Hi Sam,
Thanks a lot! Will you be cross with me if I told you that I actually gave your name as a reference to get a 7% discount on the JBL speakers at TMC?

That is odd. When I use Sma's name I get chanrged more! Waaaah! :-(

[anadkarni]

Originally Posted by Vivekphadnis

I am glad you liked it. Which amp did you buy? Let us see some pics.

Vivek,
I haven't installed an amp yet. I don't think I will ever do it. Maybe I need to hear the output in your Alto to be convinced to buy one:-). But that will have to wait for a while.

Navin, Tough Luck for being charged a higher price. I sympathise with you for that.

Pics, eh? Please hang on till tomorrow folks. I'm recharging my batteries today.

Rudra and JK, where are you Sirs'? No posts from you on this thread. I guess you guys are busy.

[navin]

Hey, I was kidding! :-)