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New member Username: WireaudioWood Dale, ILLINOIS USA Post Number: 1 Registered: Apr-05 | Hi! I just got myself a Lanzar OPTI1232D with these specs (don't get me wrong, this thing is a work of art): Custom Tooled Die-Cast Aluminum Basket Aluminum Alloy Cone Structure Massive Butyl Rubber Surround 3' High Temperature Dual Voice Coil 50 Oz x 3 High Density Barium Ferrite Magnet Power Handling: 750 Watts RMS/1500 Watts Peak Frequency Response: 26- 800 Hz Impedance: 2 Ohms DVC Efficiency: 88dB Includes Installation Hardware and Template I am trying to hook this up to an Blitz Audio amplifier with these stats: 2400 Watts Mono Block Subwoofer Amplifier 1 Ohm Stable MOSFET Power Supply PWM (Pulse/Width/Modulation) System Glass Epoxy PCB Remote Turn On/Off Gold RCA Inputs Custom Terminal Block for Speaker Connection Thermal, Overload and Short Protection Input Impedance: 10k Ohms Variable Subsonic Filter (15Hz~40Hz, 24dB/Octave) Phase Control 0-180 degree Remote Bass Boost Heavy Duty Powder Coated Heatsink Neon Light S/N Ratio: >90dB Anti-Thump Turn-On Dimensions: 10.9''W x 2.67''H x 15''L Also, here's more detail: 14.4 VDC 50Hz: RMS AT 4 OHM: 400W MONO RMS AT 8 OHM: 800W MONO RMS AT 1.3 OHM: 1200W MONO MAXIMUM POWER OUTPUTS: 2400 W MONO The problem is that this sub is not hitting hard enough. As soon as i hit a volume of "24" out of "36" that my stereo can go up to, i can feel the vibration preety well, but the amp stops working!!! like it dies out on me for a second! I hooked it up by bridging the 2 channels together, then connecting those to the bandpass box inputs and from there one wire goes to the plus on the sub coil 1, one goes to - on sub coil 2, then i ran a wire from coil 2 - to coil 2 +. Is this right? since this one is a 2 ohm woofer and the amp is 1.3, 2 or 4... am i doing something wrong here? Please help! |
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New member Username: WireaudioWood Dale, ILLINOIS USA Post Number: 3 Registered: Apr-05 | Come on guys a little help here! |
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Silver Member Username: Kojak28Augusta, GA USA Post Number: 123 Registered: Feb-05 | If you wired the sub parallel ( both voice coils' negatives together -then positives together)you would achieve 1ohm. What I understand here is you wired this sub in series(+-+-+-). Wiring in this method causes the ohm load to increase, thus the amp is reading 4 ohms. What really sux about that sub, is that it is 2 ohm DVC. You CANNOT run that sub at 2 ohms, which 99% of all mono block amplifiers are 2 ohm stable. That amp is NOT TRULY 1 ohm stable. It is 1.3ohm stable. Long story short, if you want more BOOM, rewire that sub (--,++), and keep your gains low. You are actually tricking the amp to read LESS resistance. I don't know a lot about bandpass, but I am pretty sure that setup has to be TUNED or you will shred the box, smoke the amp, and murder the sub. |
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New member Username: WireaudioWood Dale, ILLINOIS USA Post Number: 5 Registered: Apr-05 | Here is an image that tells you how i wired it. Is this right? http://www.americansitedesign.com/wireaudio/sketch.gif |
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Silver Member Username: Kojak28Augusta, GA USA Post Number: 127 Registered: Feb-05 | I don't think so. According to that diagram, you are only using ONE voice coil. You need to wire BOTH voice coils together (- -, + +) then back to the amp on the same polarity, on the same channel if it is a 2 channel amp- Otherwise, you are going to drop yhe ohm load. |