Hi
haven't found answer to this from searching. I have the hi-fi option with 6 channels - two for the rear and 4 (tweeter + midrange/woofer on each side) for the front. I want 2 channels in the front (one on each side) to go with lighter home made door panel and 2 way speakers. So to make the 4 channel into a 2 channel, can I splice the tweeter wires and midrange/woofer wires and connect them to the single two way speakers? I don't think it should change the resistance by doing this, it may increase load on the speaker. Shouldn't affect the amp/head unit? If I can do this, do I need to connect the negative from both channels to the negative of the speaker or can I get away with just connecting one negative and the two positives from the tweeter + midrange/woofer channel?

Thanx in advance.

 

No, you cannot connect two speaker outputs together on one speaker. If you're not using the rear speakers, you could use the rear outputs for the front, since they are apparently full-range.

 

There's another recent post topic about replacement speaker volume level in a hi-fi option car that ties in with this one. Is the hi-fi option really a 6 channel system meaning 6 channels coming out of the power amplifier or is it 4 channels that are split up by a crossover network to feed the separate drivers in the front?

 

The Nokia amp below the seat has separate outputs for the tweeter and midrange/woofer for each side, so I assume the amp has internal crossover (is that the same as having a separate channel - one for the tweeter and another for the midrange/woofer ? I assumed so, maybe I don't have the terms correct?).

 

There must be an internal crossover in the amp to separate frequencies but it could be following 2 separate amp outputs or just a single output that is separated by the crossover. In any event do not conect the wiring of the 2 outputs together. You need to feed each 2-way speaker with the direct output of one channel of the amplifier, bypassing any crossover network. I am assuming that your 2-way speakers are a single component in which case they have any necessary crossover built into them.

 

okay, two outputs into one speaker is a no go. I'm not sure if I can wire the tweeters in the two way speaker but will take a look. Thanx.

BTW what is a DSP (digital signal processor?) - supposed to be one in the driver's side door, also noticed there are 'extra' pins on the driver side speaker connector cf the passenger side.

 

My understanding is that Porsche offered the DSP thing as some lame "reverb-try-to-make-it-sound-like-you-are-in-a-concert-hall" option, anyone know if this is what it does?

 

An update for anyone doing this in the future. After looking at the internal crossover in the two way speaker (basically looks like a capacitor or resistor attached to the wire that goes to the woofer/larger speaker connected in parallel to the tweeter), and using the voltmeter on the pins for the stock speaker connector in the door (found that the 'tweeter' pins has about 35 volts vs the 'woofer/midrange' pins only has around 10 volts), I reasoned that the 'crossover' in the amp may just affect the output to the 'woofer/midrange' and attached my two way speakers to the 'tweeter' pins. Seems to work fine, reasonable 'range' to my ears and since my car is being lighted for the track, in combination with the stock rear speakers (repositioned lower) this is good enough for me.

 

Nice bit of investigation. I agree with your conclusion. Do I understand that there are 2 outputs from the amp under the seat that go to each door so that any crossover components are in the amp. I assume the crossover you described was in the new 2-way speaker you are using.

 

That's basically right and IMO it's pretty useless so I leave it turned off. It also has a speed/volume feature but so does my Traffic Pro headunit so that stays off too. It's all basically '70s technology in a '90s car as far as I'm concerned and nothing to covet.

 

Thanx, yes to all of the above!