Hey I am curious, I have read all the posts about replacing the door speakers in a Camaro with the Alpines and also the 2 ohm Infinity 62.7i's , Am I to assume everyone just keeps the factory tweeter when they replace them or??? Also would like to hear from anyone who has put in the Infinity 62.7i's , mainly do they sound as loud as the factory door speaker (I know they sound better) also for those who have them powered by the monsoon amp did you just get a speaker harness adaptor and plug em in or was there any mods to be done at all (I know about what needs to be done to install the Alpines) thanks

 

I thought those 2ohm speakers from infiniti were exspensive as hell

 

Only Firebirds have seperately mounted tweeters. Camaros have coaxial mounted speakers in the doors that are wired like components speakers (seperate wires for woofer & tweeter). So for us Camaro owners, there is no way to change out only the door woofers and keep the tweeters. I believe alot of F'bird owners do keep the stock tweeters in the Monsoon system.

As far as the Infinity's being expensive as hell, they do run a bit more than the Alpines. But they are not outrageously priced.

FYI: Internet prices: $70 - $100 for Alpines, $100 - $150 for Infinities.

 

I bought the Infinity Kappa 62.7i coax for my sail panels. (aftermarket amped) They were like $75 on e-bay brand new in the box. The seperate comps are a bit more money. I think the speakers sound great, however they are not hooked to the monsoon amp.
The speakers come with seperate woofer and tweeter connections, so it really makes the install pretty simple. They also come with crossovers, but if you are going to hook them to the monsoon amp, I don't think you will need them, at least not right away.

 

I just bought the 62.7's to replace blown stock fronts. From what I've read, can't you just tape off the stock tweeter wires and use the amped wires to connect to the new speakers given the Infiniti's built in crossover?

 

Not with the stock Monsoon Amplifier. IT has built-in low-pass filters so it only put's out frequncies below 2KHz or so.

 

There are two sets of speaker wires per door. One is for low pass (mids) and runs off of the monsoon amp. The other is high pass (or maybe full range) and runs straight off of the head unit. As far as I know, the Kappa'62.7's have separate connections for the woofer and tweeter, AND 2ohms as the stock speakers are, so I think the Kappa's will be a MUCH better option than the Alpine SP170A's. For starters, the Alpines are 4 ohms essentially doubling the resistance and halving the power delivered to the speakers. And secondly, only one connector for both woofer and tweeter so it requires light surgery to snip the tweeter wires to be able to utilize the high pass lead to the tweeter and monsoon lead for the midbass. I speak from experience here because I currently have the SP170A's in my doors. Monsoon leads running the mid bass and the head unit running the tweeters. They sound nice and clear, but very weak in comparison to the stock 2ohm speakers. I am currently looking at Ebay and they have a TON of these Kappa's up for auction.

My friend and I just installed a homemade stealthbox and amprack. It's a 1200W SoundStorm running bridged mono into a single Dual Voice Coil SPL Sub. Used a PAC unit of the stock deck for the leads.

I am considering the following:

1. Buying the Kappa's, and replacing the SP170A's in my doors.

2. Disconnecting the sail panel subs (don't need them anymore with the stealthbox installed) and install the SP170A's in place of them (now let me finish )

3. Disconnect the rear hatch speakers, and re-route the speaker wires back to the sail panels to power the SP170's. (I cant use the old sail panel sub wires because they are low frequency only right from the monsoon amp. The rear speaker wires are full range so would run the SP170A's decent enough for some "fill".

And that's that. Sorry for the long post but I thought it might be a nice little setup for others to consider.

Keys

 

I have 170A's all around, and mine A-B with stock were not "very weak" at all.

In all reality the overall volume level that could be obtained was much better even with the stock monsoon h/u and amp. There was not a boost to bass, but the max usable volume was improved with greater clarity and comparable bass.

What throws most people off is that the Alpines are 4 ohm, and as such it does take more "volume ****" if you will, to obtain the same volume. But adjusting for that they can play every bit as loud and sound much better, but people get hung up on the fader relationship and assume the alpines are crap.

But the 2 ohm advantage is grossly over-rated. Even if the monsoon amp is a truly scalable 4-2 ohm amp, you are looking at the difference between feeding the doors 25 watts vs 50, which in terms of volume is not a two fold difference. 10 watts to 100 watts = subjectively twice as loud. 25 watts to 50 watts equals a difference, but not a huge one, audibly.

My recommendation has always been - using stock hardware, it isn't worth spending that kind of cash on kappas.

Going with an aftermarket deck and amp, then they become worth considering.

Oh and keysplayer, your being held back by the monsoon head unit itself. The monsoon head unit cannot provide the monsoon amp with a high enough, clean signal even to use all of it's available power.

I built my system up in steps, and at one point I had alpines all around, kenwood head unit, still running the monsoon amp. With the kenwood h/u sending a clean signal to the amp - the amp hit really well. I know that statement sounds completely ridiculous but I've been through it and it's absolutely true. It was MUCH stronger than the kenwood built-in amp, I estimate around 40 watts rms with good headroom.

I think you'd be really surprised how much better it'd sound just doing a h/u swap. I'd recommend that way before going to the kappas.

 

Ahh, but I never said the Alpine's were crap. And I said, halving the power delivered to the speakers, not perceived db. The alpines sound very clean. You mention "it takes more volume ****". Well, that is a problem with the stock equipment. We all know the monsoon systems "fade" as you near its maximum "safe" volume to preserve speakers (which annoys me), but anyway, The Kappa's are not THAT much more expensive than Alpines. They are selling on Ebay, brand new for under 100.00 including shipping. I bought the Alpines new from a store for about 97.00. And I plan on eventually getting a Kenwood HU, KDC X879 or similar and another 4 channel amp to run the doors and sails. It's gonna be down the road a piece, but its less hurtin on the wallet for me if I do it in small stages.

Quote toddichi: Oh and keysplayer, your being held back by the monsoon head unit itself. The monsoon head unit cannot provide the monsoon amp with a high enough, clean signal even to use all of it's available power."

I could not agree more. Very low voltage signal and most likely somewhat dirty. The Kenwood I'm considering delivers a very clean 5V signal to the amp. I, like you, am approaching this in stages. Maybe by mid summer I will have the new HU and amp to run the 4 corners. I am set with bass with the 10" sub. (Good enough for me and I'm not looking to shatter my windows with bass, just nice solid bottom end).

 

Aside from the convenience of having the seperate inputs on the Kappa's, there is nothing the specs that indicates the Kappa's a better fit than the Alpines. A 2 ohm impedance only means your working your amplifier harder. While lower impedance has it's advantages in sub-woofers and high end competion speakers, it is essentially irrelevent in the Stock Monsoon system.

The main thing you want in replacement is speaker sensitivity. This is the parameter that measures exactly how efficiently a speaker converts electrical power into sound power. Since the Monsoon system is fairly low power system, highly sensitive speakers like the Alpine S-series and the Infinity Kappa 62.7i's are good fits.

Unfortunately a spec sheet does not tell you how good they sound. If you have a chance to listen to both and actually compare how they sound, do so. And get the pair that sounds best to you.