Question re amp and speakers

[gstoli]

Darn, I am clueless when it comes to sound systems....

I am thinking of buying this amp:
Infinity Kappa Five

It outputs 4 channels of 75 watts at 2 ohms and 1 channel of 300 watts at 2 ohms.

Questions:
1a) I guess I'll split the one woofer output and drive it to the door speakers. Right?
1b) Do I need speakers or just woofers for the doors?

2) This thing has on-board variable electronic crossovers. That means that I don't need crossovers for the speakers (especially for the woofers?)

I was thinking of buying infinity kappa speakers (that have 2 ohms impedance) but I still don't know what to get for the door speakers (and one of them must be blown or something, because it sounds awful)

Excuse my ignorance and, please, guide me through this...

George

[mptoledo]

Originally Posted by gstoli

Darn, I am clueless when it comes to sound systems....

I am thinking of buying this amp:
Infinity Kappa Five

It outputs 4 channels of 75 watts at 2 ohms and 1 channel of 300 watts at 2 ohms.
Questions:
1a) I guess I'll split the one woofer output and drive it to the door speakers. Right?
1b) Do I need speakers or just woofers for the doors?
2) This thing has on-board variable electronic crossovers. That means that I don't need crossovers for the speakers (especially for the woofers?)
I was thinking of buying infinity kappa speakers (that have 2 ohms impedance) but I still don't know what to get for the door speakers (and one of them must be blown or something, because it sounds awful)
Excuse my ignorance and, please, guide me through this...
George

Most of your post is beyond my paygrade, but I did get Kappas 4" front and 4x6 rears. They are 2ohms and sound fantastic. The fronts took a little effort to put them in the existing housing, but the backs are giving me a headache. I am leaving the doors alone for now. You can always go to cruchfield and get some free pre buying support. Just a warning, they are high.

Oh, I am still using the stock amp as for a convertible it is plenty(so far). My Kappa speakers sound fantastic, with my new jvc hd50 head unit(best buy) $200ish installed.

[funkdefino]

I think it's a great multi channel amp. Unfortunately... you are losing performance (power) for form factor. Why not look into a good 4 channel amp pushing 150 watts @ 2 ohms and a good 3-600 watt monoblock amp fo the subs?

Have you looked into Hifonics? They make excellent car amplifiers and the price is right. Check out the Zeus series. You could easily buy 2 amps for the same price as your paying for that one underpowered Infinity.

http://www.sonicelectronix.com/item_17652_Hifonics+ZXi+6410.html

[mptoledo]

I just got back from Bestbuy and the install guy corrected me. The rears are running off the radio and the front and doors share a common ground and are running off the 4x40watt P amp. I was like no frickin way. The rears are blowing away the fronts. But he was very adamant about it, so i didn't argue

[TriGem2k]

I HIGHLY recommend the Alpine PDX 5. It fits right where the cd changer would go. It is rated at 75x4 (although the one i have came with a rating of 114x4) and 300x1 (mine is 406x1)

Probably the most compact and powerful amp you can find

[ChrisZang]

Originally Posted by mptoledo

I just got back from Bestbuy and the install guy corrected me. The rears are running off the radio and the front and doors share a common ground and are running off the 4x40watt P amp. I was like no frickin way. The rears are blowing away the fronts. But he was very adamant about it, so i didn't argue

That's correct

[urban_legend]

and if you want the same technology in a smaller cheaper easier version
Alpine Head Unit Power Pack, Model KTP445. Just plugs into the newer alpine head units. For those with no amp amd want a DIY with no headaches seems like the way to go.

[mptoledo]

Originally Posted by ChrisZang

That's correct

so does the P amp suck and the jvc just that much better?

Also, since the rears are the only thing hooked up to the jvc do they still get the 40 watts or do the get extra since nothing else is drawing power?