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Old 03-20-2009, 05:56 AM   #1
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Factory Set up - confused - SVEN 4

HI, I am trying to replace the OEM amp ( E46, 328 with NAVI) to a decent aftermarket one. Iíve learnt that I need line out convertors and planning to use SVEN 4. Do I need to buy 2 of them, if I I want to power 2 fronts and 2 rears? Or one SVEN 4 will be enough?

Also, my local audio guy told me that I have quite complicated system and the converter may not do the job. He said that my set up is - EOM player gives a signal to a preamp, which then spreads it into lows, mids and highs and then the amplifier do the rest to power the speakers. He said I have 3 units installed. See the picture ( ignore the navi and phone on top of the ampl). Any idea if he is telling the right things? I have some doubts, as in my country, nobody will bother to go that far as I did. They will simply replace the OEM BMW player and put aftermarket units.

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Old 03-24-2009, 03:40 PM   #2
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Sven 2 will do 2 speakers. Get an sven4.

Although I have only seen US systems, I seriously doubth your installer is giving you good information. One easy way to find out: disconnect the plugs in the amp only. If what he is saying is true, then you would still hear the "other" speakers playing.
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Old 03-27-2009, 12:44 AM   #3
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Thanks, will give a try.
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Old 03-28-2009, 08:07 PM   #4
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If you amp is just like mine in the us then your installer is a dope and got his training at walmart. The factory head sends a balanced preamp signal to the amp in the trunk. the only catch is that the amp has an output for each speaker seperatly. So in other words there is a channel for each speaker.So 6 channels up front and 4 in the rear. Each channel is Crossed over (Filtered) when sent to each speaker. Which poses another problem. You cant just slap in a 4 or 6 channel amp to power your speakers without building a passive crossover network (Not hard but not a DYI for the average joe). SOOO.... The best way to accomplish the task is to replace all of your speakers at once and to get a 4-6 channel amp. Woo that was alot. And yes the sven4 will allow you to add an amplifier(s) (I did). I am considering doing the above because the sub easily overpowers the components at high volume.
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Old 03-29-2009, 07:45 AM   #5
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Great thanks, will go for a JL Audio 6450 apm. It has the differn balanced inputs.
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