Ohmic Audio

Reference Tables Hub

Use this appendix when you need a quick lookup instead of a long walkthrough. The tables below are grouped by the kind of decision you are making so you can get to the right reference faster.

Wiring And Electrical

TableUse It ForIncludes
Table A.1Choosing wire size and fuse ceilingAWG, resistance, chassis current estimates, maximum fuse
Table A.2Checking wire length against voltage dropRun-length guidance for 12 V systems
Table A.3Matching fuse size to conductor and system scaleGauge, fuse ceiling, typical power range
Table A.17Converting electrical units and formulas quicklyVoltage, current, resistance, and power conversions

Impedance, Enclosures, And Crossovers

TableUse It ForIncludes
Table A.4Series speaker wiring checksQuantity, impedance, and final load
Table A.5Parallel speaker wiring checksQuantity, impedance, and final load
Table A.6DVC wiring outcomes at a glanceConfiguration and final impedance
Table A.9Sanity-checking driver parameter rangesFs, Qts, Vas, Xmax, and sensitivity norms
Table A.10Matching Qts to enclosure familyBest enclosure type and expected behavior
Table A.11Choosing starting crossover targetsSpeaker type, pass bands, and slope hints
Table A.12Comparing crossover steepness and overlapOrder, phase shift, overlap, and best use

Power, SPL, Batteries, And Conversions

TableUse It ForIncludes
Table A.7Estimating amplifier power for SPL goalsTarget SPL versus approximate power demand
Table A.8Estimating current draw by amplifier classPower output and class-efficiency comparisons
Table A.13Comparing SPL exposure against hearing riskdB examples, time limits, and protection needs
Table A.14Comparing common AGM battery optionsCapacity, reserve, size, weight, and price
Table A.15Comparing LiFePO4 battery optionsCapacity, size, BMS, weight, and price
Table A.16Fast unit conversion lookupsCommon length, volume, and measurement conversions