[mohang_j]

Originally Posted by navin

I too suspect that there is an internal fault.

Navinji,
Out of 8 transistors 4 are showing 7 ohms less resistance. I have seen this in UPS and Power supplies (mosfet) but not in Audio amplifiers. Now should i replace all transistors (my choice) or only defective transistors?

[govigov]

@navinji,
yes these are on the HU

[navin]

Originally Posted by mohang_j

Out of 8 transistors 4 are showing 7 ohms less resistance. I have seen this in UPS and Power supplies (mosfet) but not in Audio amplifiers. Now should i replace all transistors (my choice) or only defective transistors?

If the replacement transistors are the same then only the defective ones need be replaced.

Originally Posted by govigov

@navinji,
yes these are on the HU

Originally Posted by govigov

what are the ideal settings for treble and bass?
i have them on 3width-100Hz LPF at 80Hz for the sub
and the compos on 3width - 12.5KHz is that correct?

LPF: 80 - 100Hz / 12-18db per octave
HPF: 60-80Hz / 12-18db octave for 6-6.5" midbass components, 100Hz for 5-5.5" and 125Hz for components with a 4" midbass.

EQ: adjust to taste but try to keep boost and cut to about 6db (+/- 6db).

Originally Posted by govigov

edit: what is this pink/white brown noise? how do i use that to tune the system?

white: equal energy per frequency in linear scale
pink: equal energy per frequency in log scale
brown: power decreases 6dB/oct (with increasing freq) (integrated white noise for the maths freaks)
violet: power increases 6db/oct
black: silence!

[govigov]

@navinji, how do i set the 12-18db per octave?

running on 5.25" components

[navin]

Originally Posted by govigov

@navinji, how do i set the 12-18db per octave?

Does not the HU have that option? I have not used a non-Alpine HU for many many years now. Sorry.

FYI: I know there are many HUs that are better than Alpine (Clarion, McIntoish, Becker, Kenwood, etc..) but I've been using Alpines since 1986 (7284 and 7385 were my first Alpines) and their controls are still in the same place so I can now keep my eyes on the road.

[govigov]

there is an option to set a frequency to have emphasis on, how much emphasis, and width from that frequency to which you need the emphasis. (it does not have a parametric or a graphical equaliser)

edit : it has 2 band parametric equaliser

[navin]

Originally Posted by govigov

edit : it has 2 band parametric equaliser

Wait a second. I think we are both confused.

I was talking about XO's LPF and HPF for the subs and speakers and you were refering to equallization.

[govigov]

okies. now i am clear. let me try that out and i shall let you know how it goes.

[govigov]

KAC 9104D for 13k. how is the price?
RF prime R500-1 for a lil less.

which one is better and what do you guys think about the prices.

both of these are brand new in box

[abhinav.gupta88]

The kenwood price is on the higher side.

The RF would do a great job.

[govigov]

RF would come to 11500. inclusive of shipping and customs charges, delivered at doorstep.

[misquitas]

Originally Posted by chetans

i am almost finalised on buying this:
Car Inverter 75W, Car inverter 150W, car inverter 300W, Axiom car inverter, car charger, charger, car

just wanted to know any drawbacks of using such inverters.
Please share such details.

googled and got below hit:
eBay India: 150 watt Multi utility car power inverter (item 380085244778 end time 27-Dec-2008 13:59:50 IST)

this item has got even usb output socket.

I know this post is rather old, but I was looking out for a similar gadget that would enable me to charge my mobile phone from the cigarette lighter socket of my Alto.

I found this very interesting product for only $6 that fits snugly into the lighter socket from usbgeek.com. For the benefit of others on this forum, the product can be viewed at:

USB Geek, Your USB Solution!!

Roll your mouse on the pictures and you will notice how easily this tiny USB charger can fit in the lighter socket.

I checked out with them and they confirmed that products can be shipped to India for about $3.

I can easily charge my Nokia E61i from this USB car charger with the help of the Nokia CA-100 cable.

Regards,
Melvyn

[hrsraghav]

A freind has Sep 2008 make Swift. He wanted to install components in front, but one installer told him that in swift there is no place to fit in the tweeters, and he has to cut the doors somewhere.
Can any one confirm, What is the size for speakers in Swift front doors, and is there any place for tweeters?

[greenhorn]

absolute rubbish
ask him to find another installer

[DerAlte]

Originally Posted by misquitas

... products can be shipped to India for about $3. ...

Melvyn, a cig lighter USB charger is commonly available at most large electronics retail stores in cities in India.

Originally Posted by hrsraghav

A freind has Sep 2008 make Swift. ... What is the size for speakers in Swift front doors, and is there any place for tweeters?

Check in the Swift thread for Swift-specific discussion, as well as the Sound Off & Show Off section for pics.

One can fit 6.5" mid-bass/co-ax in the stock location with an MDF spacer. The tweeter can go to one of 3 locations: base of A-pillar cladding, side-view mirror pod and door. Different installers prefer different locations.