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Speakers in Parallel Calculator

Jump Straight to CalculatorThe calculator below is useful in determining the total impedance of speakers in parallel. It also calculates how the power is shared between the speakers.If all the speakers have the same impedance, the calculation is...

Amplifier, Speaker & SPL Calculator

These calculators will find how loud an amplifier and speaker combination will be, or what size amplifier you need to make a speaker a certain loudness.There are five factors which contribute to how loud a speaker will be:1) The...

Distributed Speaker System Cable Loss Calculator

Jump Straight to CalculatorThis calculator will help you determine the cable losses in distributed speaker systems (also known as 100-volt or 70-volt speaker systems). By inputting the cable size and length, and the number and details of the speakers,...

Speaker Dispersion Calculator

If you look at the specifications of speaker boxes, you should see something like Dispersion (H x V): 90 x 50. This is stating the nominal angle of high frequency dispersion in the horizontal and vertical plane.  These figures...

Distributed Speaker System SPL Calculator

This distributed speaker system SPL calculator takes the guess work out of which speaker tap to use. It will tell you the correct power tap for each speaker in your design. The calculator is really useful when balancing levels...

Speaker Cable Loss Calculator

Jump Straight to CalculatorThis speaker cable loss calculator simply tells you how much resistance is in your speaker cables and what decibel(dB) and power losses are attributed to your speaker cable. It also calculates the effective damping...

Phone & Ipod Chargers

 Do phone chargers and Ipod chargers draw power when not connected to their device? The answer is: it depends on the type of charger.There are two basic types of technologies used in power supplies (a charger is basically a...

Reflections on the TV Remote Control

The recent passing of Eugene Polley, the man known for inventing the remote control, has given me cause to reflect on the development of the remote control. In just my life time, the humble TV remote control has come...

Connecting Speakers FAQs

After answering nearly 1000 questions on connecting speakers on this website, some common themes have emerged.Please read the answers to these Frequently Asked Questions (FAQs) on connecting speakers before asking your own.If, after reading these FAQs, you still have...

Maximum Noise (Decibels) and Time Exposure Calculator

Most countries have a stated maximum continuous noise level over a continuous 8 hour period (a working day). This is normally agreed to being a maximum continuous noise level of 85dB for 8 hours.Some authorities then say for every...