Thanks rajanysvv for taking time out & responding .
I drive a Verna 1.6. I have a old mono amp with 250 RMS which I'm planning to move to my old Santro.
Im planning to buy a new mono amp for the sub & based on your suggestions I have short-listed these amplifiers :
Model Name/RMS/Peak Power
BLAUPUNKT - GTA 1500D/500W RMS output at 2 Ohms/1000W
JBL - GTO 501EZ/500W RMS x 1 channel at 2 ohms, 14.4V DC, <1.0% THD/770W
JVC - KS AX5101D/300Wx1 at 4 Ohms, 500Wx1 at 2 Ohms/1000W
Sony XM-GS100/600W × 1 (at 2 ohms), 330W × 1 (at 4 ohms)/1100W
(Sony seems to be with the best RMS :))
What according to you would be the best fit for the sub ?
Also would i need to buy a Hi-lo converter as I'm not sure if Verna comes with a pre-out or not on the factory fitted Display unit ? keeping in mind that Im planning to buy 4 channel amp for the speakers in the future.
There are amplifier wiring kits from brands such as focal, kicker etc available in the market is there a real need to buy such kits & if it has any significant impact ?
Again thank you.
Hi samsv,
Of the amplifier brands and specifications you have mentioned, it is not worth considering the peak power rather you should only look at the RMS. i.e. peak power is like a person can run 100 mtrs in say 10 seconds and the same person can in normal course can walk 100 mtrs in 80 seconds on a daily basis. Similarly peak power is rarely seen depending on the output only for certain frequencies while the regular output is to be seen only at rms. Generally peak power specified by a reputed brand is 2 times of rms while cheap brands gimmick peak power at 3-4 times of rms. Nowadays even good brands overstate peak power to withstand competition from cheap brands. So the final specifications to be considered at an impedence of 4 ohms for your mentioned brands are as follows:-
Blaupunkt GTA-1500D 250watts RMS
JBL GTO-501EZ 350watts RMS
JVC KS-AX5101D 300watts RMS
SONY XM-GS100 330watts RMS
Now which is better? JBL has the highest RMS output followed by Sony, Jvc and Blaupunkt being the least. Here my choice would be Blaupunkt, though the rms is least it's a better brand, the difference in a 50-80watts rms less power output would be hardly noticeable compared with other brands.
Also while selecting an amp you need to consider 3 other factors:-
1) Front & Rear Speakers and Subwoofer that you will match for your ICE setup:- The total power output of your speakers should match the subwoofer output (consider output only at RMS @4ohm impedence). So if you are planning to install front component speakers with 50 watts rms per channel and rear co-axial speakers with a 70 watts rms per channel your total is 240 watts, so a subwoofer of 240-360 watts rms is an ideal match. A mono amp in the range of 200-300 watts rms output.
2) Current input for your amps:- an amp requires an input of power. In your case since you are planning to install a mono amp to power the sub, you would require another 2/4 channel amplifier to power the 4 speakers. Take notice that the the total input power requirement of your amplifiers plus head unit/receiver does not exceed the alternator and battery output.
Because of the conditions generally an ICE upgrade setups is restricted to 2 types in India:-
1) 4 channel amp:- 2 channels of amp are given as output to the front component speakers and other 2 channels are given as out to subwoofer. Rear co-axial speakers are powered directly from the head unit which has a 30watts rms. Rear speakers are mostly co-axial used for the fill purpose. Some connect all 4 speakers to the front 2 channels of amp and other 2 channels are supplied to power the subwoofer, incase the rear speakers need an output of 30watts rms. Some people opt for 5/6 channel amplifiers where each cahnnel is supplied to the 4 speakers and 1 subwoofer. This option saves space, less on cost of wiring kits, etc.
2) Multi amp setup:- Speakers are powered by a 4 channel amp and another mono d class amp is used to power the subwoofer. Output is better, cost is more, more wiring, etc and a drain on the battery, in some cases people use/fit a 2nd battery to power the extra outputs.
So practically a 250 watts rms output @ 4 ohm, class D, mono amp with a 200-375 watts rms output, single voice coil, @4 ohm. (double voice coil subs mostly come with a 2 ohm impedence)
Regarding a high low converter, it is required in case your head unit has no option of pre outs. You can first go to a car accessory shop and ask him to check the pre-outs of the head unit first before you decide on the ICE upgrade.
Regarding wiring kits, yes a good reliable wiring kit is required as it effects the sound quality. No point in going for good brands of amp, speakers and subs and a cheap wiring kit. Also a damping kit increases your sound output by 15-20%.