My amp problem is now solved. The dealer replaced the existing HE2 amp with Blaupunkt velocity series amp with 2k price difference. Now there is terrific bass sound from my polk sub. He has made some changes now. The current to amp is now given throgh key current. He has installed gain convertor which converts high in lows and these lows are connected to new amp through new RCA cable.
is this type of wiring is good?
I told you that there must be problem in your wiring. RCA wiring is good with hi-low converter. that is what we all are using.
(i dont know why we use the word "hi-low converter " . it should be line-out converter actually)
finally you getting desired output from your sub.
what are the specs of your new amp btw? is it mono or 2 ch?
I have gone to a dealer today and he has quoted following prices.
Polk DB6501- Components -Front - 10,500
Polk DB651 - Co-axials - Rear - 5,100
JBL GTO 1004 Amp - 15000
Infinity Reference 1260W 12" Sub - 8000 (Without enclosure)
Scosche Wiring - 1800
Converters etc. - 2200
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Total 42600
Discount 7850
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Net 34750
However he was telling that there is a shortage for Polk speakers and was asking me to go for JBL 6080 component speakers @ Rs. 7,000/- and Infinity 6532coaxials @ Rs. 5,500/-.
He was quoting another 1650 for Sub enclosure.
with Discount price seems fine.
Polk will be good choice , after that infinity (no JBL)
For amp - in this price you can get so many choices so try for other brand. if you dont get any then go for this amp. I have the same one and its pretty good.
Sub- get rockford p1 or kicker sub. they are better. i used to have infinity sub , good for SQ but dont hit low.
and
subbox - if you want to get better sound get ported box with almost 1.7 cubic feet area. These dealers order subboxes from factory shops (where they make subboxes only). tell him i want a box of my own specification can you arrange one ?
The small box the dealers give to you wont produce much bass. waste of money.
if you cant calculate for subbox , inform me. i will give you specs.
if you have extra money get scosche original converter. as we dont have good HU , we need a good converter. it's little costlier.