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Old 07-15-2013, 05:42 PM   #1
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hifi Stereo Question...impedance, amp, rear shelf speakers

I have a 2000 Boxster S with the following stereo options:

M696 CD Radio "Porsche CDR-220"
M490 Hi-Fi Sound Package
M680 Hi-Fi Audio System with Booster
M584 Storage Box above Engine

I checked my factory amp and it is 6 channel. My factory head unit is the Becker CDR 220 and I have dash and door speakers. There seem to be many variations of stereo configurations.

I want to replace the dash and door speakers. I was under the assumption that the speakers are all 4 ohm since I don't have the BOSE option, but when I took apart my driver's door panel, I saw a sticker that said the door speakers are 2 ohm. I haven't had a chance to take out the dash speakers, but I already purchased a set of Focal KP100s, which are 4 ohm components.

I assume the rear shelf speakers are powered since I have a 6 channel amp (shocking because I can barely hear anything coming out of those). Does anyone know if those are 2 or 4 ohm?

Can I change the door speakers to 4 ohm and still retain the stock amp or must that be changed?

I am planning to change my head unit too.

Thanks in advance, new to aftermarket car stereos.

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Old 07-15-2013, 06:18 PM   #2
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As a general rule going higher is fine ..
(2 into 4 goes )
However it will be quieter ...
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Old 07-15-2013, 08:19 PM   #3
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Quote:
Originally Posted by Chard View Post
I have a 2000 Boxster S with the following stereo options:

M696 CD Radio "Porsche CDR-220"
M490 Hi-Fi Sound Package
M680 Hi-Fi Audio System with Booster
M584 Storage Box above Engine

I checked my factory amp and it is 6 channel. My factory head unit is the Becker CDR 220 and I have dash and door speakers. There seem to be many variations of stereo configurations.

I want to replace the dash and door speakers. I was under the assumption that the speakers are all 4 ohm since I don't have the BOSE option, but when I took apart my driver's door panel, I saw a sticker that said the door speakers are 2 ohm. I haven't had a chance to take out the dash speakers, but I already purchased a set of Focal KP100s, which are 4 ohm components.

I assume the rear shelf speakers are powered since I have a 6 channel amp (shocking because I can barely hear anything coming out of those). Does anyone know if those are 2 or 4 ohm?

Can I change the door speakers to 4 ohm and still retain the stock amp or must that be changed?

I am planning to change my head unit too.

Thanks in advance, new to aftermarket car stereos.
I believe that I have the exact same system in my vehicle. Is yours equipped with the funky DSP equalizer thing as well ?
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Old 07-15-2013, 09:43 PM   #4
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Yeah! It's like a totally antiquated EQ setup. I plan on replacing the space with a (more useful) cubby.
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Old 07-21-2013, 05:52 AM   #5
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Just a question, Are the doors speakers subwoofers ?
Because I seam have the same setup and mine gives just bass sounds...
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Old 07-21-2013, 01:07 PM   #6
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My 2003 has subwoofers in the doors too. I added rear speakers and the system was much better afterwards.
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Old 07-22-2013, 05:24 AM   #7
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Thanks Nimbus !
I think I will do the same here...
But I have to trouble shoot my front right speaker which is work when it want !
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Old 07-22-2013, 06:27 AM   #8
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Here are the rear speaker installation instructions, I bought the kit and it just plugs in. A lot of people buy the speakers and make the mounts, grill and wiring themselves:

Pelican Technical Article: Installing the Boxster Rear Speaker Kit - 986 / 987

I replaced the headunit shortly after with a Pioneer 940BT satnav unit. This meant replacing the rubbish MOST Porsche amplifier with an Alpine unit which increased the bass from the door subs immensely. I also replaced the dash speakers with Alpines. I got a good price for the CDR23, amp and CD changer which paid for half of what I spent:


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