Alpine 3672 Active Dividing Network - old school SQ 6 output crossover in MINT condition! VERY RARE Start Price USD 225.00 Current Price USD 225.00 Time Left - Bid Count 0 Buy It Now Price - Reserve Price - Start Time Sunday, November 02, 2008 End Time Wednesday, November 26, 2008 Location Rock Island, IL See more about 'Alpine 3672 Active Dividing Network - old school SQ' Description  Alpine 3672 Active Dividing NetworkGreat old school active crossover - VERY RARE100% Working MINT condition - this is like new!I also have the original Service Manual for this unit - I could not find an owner's manual and this has both the owner's manual and service manual in one!  there is great information in here!I bought this used a few months ago.  It shows little signs of wear - only one scratch on the face!  It is currently installed in my car - working perfectly.  The last images are pics of the current installation.  I am using it in conjunction with other old school Alpine gear.  If it sells I will carefully remove it and ship within 3 days.The 3672 is an old school active dividing network that is extremely flexible.  It has 4 channel inputs, and 12 channel outputs.  That's right - this has SIX stereo outputs with active filtering, gain, and phase. You can configure this unit a number of ways.  You can run an active two-way, active 3-way, and active sub out ALL AT ONCE!  Level control on each output - 0 to +12 on the sub and -6 to +6 on all others.Five of the outputs has a phase switch.The subwoofer can get it's signal from channels 1&2, channels 3&4, or summing up all four.  It can function with just one stereo intput or two.This unit does not need a wiring harness, it has terminals with a built-in 3A fuse.  Specifications:Frequency Response: 20Hz-30kHzCurrent Drain: 350mAS/N: 80dBTHD (20-20kHz): 0.1%Sensitivity: 1-2ch/3-4ch: 500mV +- 2dB                 Subwoofer: 250mV +- 2dBInput Impedance: 10k ohmOutput Voltage: 500mVOutput Impedance: 1k ohmPower Supply: 14.4VSemiconductors: 26 IC's, 21 Transistors, 9 Diodes, 4 Zener DiodesDimensions: 240x40x160 (mm)Weight: 1.3kgFeatures:Fully configurable, 6-way signal divisionSeparate Front and Rear inputsIndependent circuitry and outputs for Front, Rear, and SubwooferContinuously adjustable crossover frequenciesSelectable non-fading (constant), front-fading, or rear-fading subwoofer output.Independent crossover frequency adjustments for Subwoofer, Front mid and rear low outputsPhase switchesDC-to-DC switching mode power supplyBalanced input sectionStereo/Mono switch for the subwooferContinuously variable output level control for all outputsCompatible with the Alpine 4313 remote in-dash subwoofer level control accessory24k gold-plated RCA connectors and power connectorsHigh performance, low noise, audiophile quality active and passive componentsThe crossover slope is not indicated in the manual - due to it's age I can only assume it is 12dB, maybe 18dB/octave.  The block diagram indicates a "3 state" filter, or three separate IC's.  The IC used for the active filter is the uPC4570HA and M5238L, both are dual OP Amp IC's.I guarantee this to arrive 100% working in the condition described above.  You get the unit pictured.  Feel free to ask questions!  See my feedback!  All of that was buying and selling consumer electronics, I have sold thousands of dollars worth of working, used car and home audio - everyone is always happy.International Shipping is available upon request.  You pay full shipping costs, the buy-it-now price stays the same Place a Bid!