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6 speaker upgrade

9.3K views 12 replies 5 participants last post by  Beeto  
#1 ·
Hi everyone,

I have a 2017 Impreza Premium with the standard 6.5” radio and 6 speakers. I want to replace all my speakers and add a small amp. I was thinking about getting a Polk component system for the front and 2way for the rear doors. An advisor at Crutchfield recommended not installing component speakers but just getting 2way for the front also and disconnect the tweeters. Does anyone have an opinion on this? Although I think I like the tweeters because they bring the highs up in front of me.

So here are my questions I’m hoping someone could help me with before I open everything up.

What I really need to know is how are the tweeters wired? I’ve heard they are run in parallel but where does the cable split? Do they run through the door or dash?

I assume the current tweeters just have a high pass filter attached and not a dedicated crossover. Is this filter built into the tweeter or somewhere else?

I will need to connect a crossover so I want to understand where is the best place to put it. I would love to use the excisting speakers wire and not run anything new. I’m going to use the Alpine power pack compact amp and put it behind the HU so I can connect to the speaker harness.

Any help would greatly appreciated. I hope someone here has found those wires.

Thanks,
Peter
 
#3 ·
The Crutchfield advisor said he just doesn’t like the way tweeters sound bouncing off the windshield. I would have done the HK upgrade if it was available for the premium trim but it isn’t. I definitely feel the standard speakers sound a bit muffled so I want to upgrade. I just wish I can find out how the tweeters are wired before I take things apart.
 
#5 ·
Reflecting the tweeters off the windshield give a better front stage. I would just upgrade the door speakers, keep the factory tweeters and add an amp. I have Rockford Fosgates in the doors and Kickers in the dash all being pushed by an Alpine amp.
 
#8 ·
That Crutchfield sales engineer sound like an idiot. Tweeters up top for sure. Ditching them and using coax speakers in the doors will create an excellent sound field for your knees and that's about it.

I just ordered a whole system that I will installing this weekend. I'll do a writeup on it per usual. It is as follows:

Rockford Fosgate component speakers with a built in high pass filter in the tweeters, so no need for an external crossover. Not sure where the factory wires split, so I didn't feel like figuring out external crossovers.

Rockford Fosgate coax speakers for the rear.

Factory head unit.

Rockford Fosgate DSR-1 DSP module so I can tune it up.

Alpine Power Pack for the four channels, piggy-backing off head unit power.

Rockford Fosgate P300-12 Powered Sub, taking signal from the DSR-1, power from the unused factory amp power plug behind the radio.

Should come together pretty nicely.
 
#9 ·
Su Baru
That setup seems like it would give u some more frequency range from the dash. I might like this. I’ve been trying to understand how resistance works. This would make a different ohm load on the front 4 speakers than the back 2, is that correct? Does that matter?

I’ll have to think about that. I was going to get the Polk DB+ component system but it uses a crossover and that’s why I needed to find the tweeter wire.
 
#12 ·
Most component speaker systems are 8 ohm speakers though, designed to present a 4 ohm load to the amp, so that shouldn't matter. If replacing the speakers individually, yes, 4 ohm speakers would present a 2 ohm load to the amplifier, and play "louder," if not possibly damaging the amp. Not sure if they are 2 ohm stable like many aftermarket amps.