BMW E34 1989-95 5-series Audio System Upgrades
Short summary:
BMW E34 1989-95 5-series Audio System Upgrades To add a subwoofer to the factory system we need an amplifier to power. use the upgraded hjigh performance 345is ...
Long summary:
BMW E34 1989-95 5-series Audio System Upgrades analog and digital systems inc., BMW E34 1989-95 5-series Audio System Upgrades To add a subwoofer to the factory system we need an amplifier to power it. We have a several choices here, depending on budget. The least expensive alternative would be to use a single 310rs.2 along with a P450 amplifier. Powering the new subwoofer with any a/d/s/ P-series amplifier will allow use of the optional AC502 bass level controller for up-front bass level adjustment. The next step would be to replace the under performing front speaker system with the 235is set which would be mounted in stock front locations. As in most BMW models, factory speaker positions are determined by stylists, not acousticians. As such, we recommend upgrading the 3-way stock system with a 2-way system. To this we will will add a pair of a/d/s/ 235im coaxial speakers for rear fill and a single a/d/s/ 312rs subwoofer in a custom 1.25 cu.ft. box in the trunk. The custom box offers better driver control for the woofer along with higher playing level. It will be installed in such a manner that it fires through the ski sack. Power for upgrade II will come in the from of an a/d/s/ P850 amp and will be distributed as follows: 50 watts to each front speaker set 50 watts to each rear speaker set 80 watts to each voice-coil of the 312rs from channels 5/6 and 7/8 UPGRADE I. In this upgrade we address the inadequacies of the factory bass system and underpowered factory amp. Stock systems are not equipped with subwoofers. Therefore, the best first investment is to add one to the existing system. UPGRADE ll. For this upgrade, we will use the same front speaker setup as in stage I. UPGRADE III. This upgrade should satisfy even the most ardent audiophile; someone who likes to listen to his or her music at concert levels, yet crystal clear. Correct speaker level wiring diagram for interfacing with factory head units. Use positive (+) and negative (-) speaker wires. Connect + speaker wires to RCA center pin conductors. Connect - speaker wires to RCA shield. Repeat for 4 channel system. BMW E34 audio system upgrades, 1989-95 5-series Well use the upgraded hjigh performance 345is front speakers but this time we wont use the passive crossovers supplied with the set. Instead well actively filter our front speakers with the electronic crossovers on board our amplifier. Our rear speaker choice will also be upgraded to the 3-series 335im. The biggest difference in upgrade lll is the addition of much more power, and another subwoofer. Subwoofers will be a pair of a/d/s/ 312rs, dual voice coil woofers, in a custom enclosure of 2.5 cu.f.t. volume in the front of the trunk sealed to our front trunk wall. This approach allows a far less complex and better controlled dispersionpattern when implemented with the trademark 2.5KHz. crossover employed only by a/d/s/ speaker systems. If we choose to upgrade front speakers in this stage, we would use a P650 amp to power ...
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