Speaker Components Speaker Building 3-19 Crossover Components 3 Section 75 Hz 8.49 16.99 12.00 375.1 24.00 187.6 100 Hz 6.37 12.74 9.00 281.3 18.00 140.7 150 Hz 4.25 8.49 6.00 187.6 12.00 93.8 200 Hz 3.19 6.37 4.50 140.7 9.00 70.3 250 Hz 2.55 5.09 3.60 112.5 7.20 56.3 300 Hz 2.12 4.25 3.00 93.8 6.00 46.9 350 Hz 1.82 3.64 2.57 80.4 5.15 40.2 400 Hz 1.59 3.19 2.25 70.3 4.50 35.2 450 Hz 1.42 2.83 2.00 62.5 4.00 31.3 500 Hz 1.27 2.55 1.80 56.3 3.60 28.1 700 Hz 0.91 1.82 1.29 40.2 2.57 20.1 1,000 Hz 0.64 1.27 0.90 28.2 1.80 14.1 1,100 Hz 0.58 1.16 0.82 25.6 1.64 12.8 Low Pass Crossover Frequency 6 dB/octave 12 dB/octave 4 ohm 8 ohm 4 ohm 8 ohm L in mH L in mH L in mH C in L in mH C in 500 Hz 79.6 39.8 1.80 56.3 3.60 28.1 700 Hz 56.9 28.4 1.29 40.2 2.57 20.1 1,000 Hz 39.8 19.9 0.90 28.1 1.80 14.1 1,500 Hz 26.5 13.3 0.60 18.8 1.20 9.4 2,000 Hz 19.9 10.0 0.45 14.1 0.90 7.0 2,500 Hz 15.9 8.0 0.36 11.3 0.72 5.6 3,000 Hz 13.3 6.6 0.30 9.4 0.60 4.7 3,500 Hz 11.4 5.7 0.26 8.0 0.51 4.0 4,000 Hz 9.9 5.0 0.23 7.0 0.45 3.5 4,500 Hz 8.8 4.4 0.20 6.2 0.40 3.1 5,000 Hz 8.0 4.0 0.18 5.6 0.36 2.8 High Pass Crossover Frequency 6 dB/octave 12 dB/octave 4 ohm 8 ohm 4 ohm 8 ohm C in C in L in mH C in L in mH C in 6 dB (First Order) 12 dB (Second Order) Crossover Component Selection Guide This chart can be used for calculating standard 6 dB and 12 dB crossovers. To use the chart for higher or lower crossover points, determine what factor you can multiply a frequency on the chart by to match the target frequency. Then, divide the inductor and capacitor values by this factor. For example, if you desire a high-pass frequency of 50 Hz at 12 dB/octave into 8 ohms, then start with the 500 Hz line on the chart. To get to 50 Hz from 500 Hz, multiply 500 Hz by a factor of 0.1, and divide the inductor and capacitor value by 0.1. This yields a value of 36.0 mH and 281.0. Part # Description Dimensions 260-116 2-way 12 dB (dish mount) 5" x 7" 260-130 2-way 12 dB 3-3/4" x 5-1/2" 260-132 3-way 12 dB, small 4" x 7" 260-134 3-way 12 dB, large 5" x 9" #260-130 #260-132 #260-134 Crossover PC Boards Super quality, pre-etched heavy fiberglass boards with riveted and soldered terminals. Comes with wiring diagram and examples of typical applications. Soldering required. Perforated Large Hole Crossover Boards Pair • 3.5" x 5" board is ideal for most 2-way crossover designs, 5" x 7" board is recommended for 3-ways • Perforations accept up to 14 gauge solid wire • 1/8" holes in each corner for easy mounting Designed with speaker builders in mind, these perforated phenolic boards are perfect for passive crossover designs. The large 0.07" (1.7 mm) perforations will accept up to 14 gauge solid wire allowing you to easily install most inductors, capacitors, and resistors. Sold in pairs. Part # Dimensions Color 260-182 3.5" x 5" White 260-186 3.5" x 5" Black 260-190 5" x 7" White 260-194 5" x 7" Black Recessed L-pad faceplate for flush mounting L-pads in custom speaker cabinets. Knob included. 2-5/8" x 2-5/8" x 1". For use with 3/8" shaft length L-pads listed above. L-Pad Faceplate For “High” #260-268 Part # Type Power RMS Impedance Shaft Length 260-248 Mono 15 watt 8 3/8" 260-250 Mono 15 watt 8 1" 260-251 Stereo 15 watt 8 1" 260-252 Mono 50 watt 8 3/8" 260-254 Mono 50 watt 16 3/8" 260-255 Mono 50 watt 8 1" 260-260 Stereo 50 watt 8 1" 260-261 Mono 100 watt 16 3/8" 260-262 Mono 100 watt 8 3/8" 260-264 Stereo 100 watt 8 1" 260-265 Mono 100 watt 8 1" 260-271 Faceplate and knob 3/8" #260-261 #260-254 #260-264 If your tweeter or midrange has too much output relative to the woofer, an L-pad will allow you to dial in the needed amount of attenuation. L-pads do their job without negatively impacting the performance of the crossover network. Simply choose the impedance of the driver, whether you need mono or stereo, the desired power handling, and length of shaft you need. Includes knob, faceplate, hardware, and wiring instructions. L-Pads Sold in Pairs
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