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Understanding Audio
- Understanding Amplifier Power
  Understanding Speaker Sensitivity
  How Multiple Speakers Share Power
  Speaker Impedance Changes Amplifier Power
  Understanding Speaker Impedance
  Understanding Distributed Speaker Systems
  Double amplifier power does not double the volume
  Understanding Acoustic Feedback
  Understanding Audio Frequency
  Understanding Decibels (part 2)
  Understanding Decibels (part 1)
  Understanding Audio Levels
  Understanding Microphone Sensitivity
Home Speakers
- Speaker Cable Loss Calculator
  Connecting Speakers FAQs
  Speaker Selector Switch Simulators
  Understanding Speaker Impedance
  How to Connect 2 Speakers to 1 Amplifier
  Speaker Selector Switch Summary
  Speakers in Parallel Calculator
  How to wire Four Speakers to One Amplifier
  How do I Connect Multiple Speakers to my HiFi Amplifier
Home Connections
- How do I connect a VCR to a Flat Screen TV
  Reflections on the TV Remote Control
  How do I connect a PVR to a flat screen TV
  Video Signals & Cables: Summary
  How do I connect my Flat Screen TV
  Video Signals & Cables: HDMI
  Video Signals & Cables: Component Video
  Video Signals & Cables: RGB video
  Video Signals & Cables: S-Video
  Phone & Ipod Chargers
  The Cost of Standby Power
  Video Signals & Cables: Composite Video
Calculators
- Speaker Cable Loss Calculator
  Speakers in Series/Parallel Calculator
  Speakers in Series Calculator
  Amplifier Power, Voltage and Current Calculator
  Distributed Speaker System SPL Calculator
  Distributed Speaker System Cable Loss Calculator
  Speakers in Parallel Calculator
  Decibel Calculator for Audio (voltage)
  Ohm’s Law Calculator
  Power Usage Calculator
  Amplifier, Speaker & SPL Calculator
  Lighting Costs Comparision Calculator
  Speaker Dispersion Calculator
  Increase Amplifier Power and Volume Calculator
  Maximum Noise (Decibels) and Time Exposure Calculator
Fundamentals
- Using a Multimeter
  AC and DC
  The Dreaded Ohms Law
  What is Electrical Power?
Reviews
- Audioflow Smart Speaker Switch Review

Home
Understanding Audio
- Understanding Amplifier Power
  Understanding Speaker Sensitivity
  How Multiple Speakers Share Power
  Speaker Impedance Changes Amplifier Power
  Understanding Speaker Impedance
  Understanding Distributed Speaker Systems
  Double amplifier power does not double the volume
  Understanding Acoustic Feedback
  Understanding Audio Frequency
  Understanding Decibels (part 2)
  Understanding Decibels (part 1)
  Understanding Audio Levels
  Understanding Microphone Sensitivity
Home Speakers
- Speaker Cable Loss Calculator
  Connecting Speakers FAQs
  Speaker Selector Switch Simulators
  Understanding Speaker Impedance
  How to Connect 2 Speakers to 1 Amplifier
  Speaker Selector Switch Summary
  Speakers in Parallel Calculator
  How to wire Four Speakers to One Amplifier
  How do I Connect Multiple Speakers to my HiFi Amplifier
Home Connections
- How do I connect a VCR to a Flat Screen TV
  Reflections on the TV Remote Control
  How do I connect a PVR to a flat screen TV
  Video Signals & Cables: Summary
  How do I connect my Flat Screen TV
  Video Signals & Cables: HDMI
  Video Signals & Cables: Component Video
  Video Signals & Cables: RGB video
  Video Signals & Cables: S-Video
  Phone & Ipod Chargers
  The Cost of Standby Power
  Video Signals & Cables: Composite Video
Calculators
- Speaker Cable Loss Calculator
  Speakers in Series/Parallel Calculator
  Speakers in Series Calculator
  Amplifier Power, Voltage and Current Calculator
  Distributed Speaker System SPL Calculator
  Distributed Speaker System Cable Loss Calculator
  Speakers in Parallel Calculator
  Decibel Calculator for Audio (voltage)
  Ohm’s Law Calculator
  Power Usage Calculator
  Amplifier, Speaker & SPL Calculator
  Lighting Costs Comparision Calculator
  Speaker Dispersion Calculator
  Increase Amplifier Power and Volume Calculator
  Maximum Noise (Decibels) and Time Exposure Calculator
Fundamentals
- Using a Multimeter
  AC and DC
  The Dreaded Ohms Law
  What is Electrical Power?
Reviews
- Audioflow Smart Speaker Switch Review

Home Speaker, Amplifier and SPL Calculator

Speaker, Amplifier and SPL Calculator

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This calculates how loud your amplifier/speaker combination will be at your listening distance.

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Reader's Feedback

Linda H

Your clear and non-technical explanations were life saving to an almost-80 grandma! Thanks!

Linda H

USA

Geoff the Grey Geek

2020-11-16T06:36:45+10:00

Linda H

USA

Your clear and non-technical explanations were life saving to an almost-80 grandma! Thanks!

https://geoffthegreygeek.com/testimonials/linda-h/

Marc

Hi Geoff!!
WOW, what a wealth of knowledge you are! Thank you for sharing your expertise! and THANK YOU for making this project a huge success!! I couldn't be more pleased with the sound and I am REALLY happy knowing that it is wired safely!!

Marc, USA

Geoff the Grey Geek

2015-01-12T08:53:41+10:00

Marc, USA

Hi Geoff!! WOW, what a wealth of knowledge you are! Thank you for sharing your expertise! and THANK YOU for making this project a huge success!! I couldn't be more pleased with the sound and I am REALLY happy knowing that it is wired safely!!

https://geoffthegreygeek.com/testimonials/marc/

Matt Bunnell (Indianapolis)

Thank You Geoff!
This article demystified microphone sensitivity for me in a big way and helped me understand the concept much better.

Matt B,

Indianapolis

Geoff the Grey Geek

2014-12-02T13:11:40+10:00

Matt B,

Indianapolis

Thank You Geoff! This article demystified microphone sensitivity for me in a big way and helped me understand the concept much better.

https://geoffthegreygeek.com/testimonials/matt-bunnell-indianapolis/

Arnita

Thank you very much for your help.
I wonder why the manufacturers don't tell you this in the manual. My mom said to thank you also, she said now she won't have to pull out her hair. Keep up the good work, this is a great site.

Arnita C,

Baltimore, Maryland, USA

Geoff the Grey Geek

2014-11-11T20:38:55+10:00

Arnita C,

Baltimore, Maryland, USA

Thank you very much for your help. I wonder why the manufacturers don't tell you this in the manual. My mom said to thank you also, she said now she won't have to pull out her hair. Keep up the good work, this is a great site.

https://geoffthegreygeek.com/testimonials/arnita/

Bob Johnson

Geoff, you have been a GOD SEND with your technical advice!
Our church congregation THANKS you!
Grace and Peace.

Bob J,

Bruce WI, USA

Geoff the Grey Geek

2014-11-11T20:21:29+10:00

Bob J,

Bruce WI, USA

Geoff, you have been a GOD SEND with your technical advice! Our church congregation THANKS you! Grace and Peace.

https://geoffthegreygeek.com/testimonials/bob-johnson/

Avril

Thanks for your help - the husband had it plugged into the wrong socket!

Name withheld

Geoff the Grey Geek

2014-11-11T20:02:57+10:00

Name withheld

Thanks for your help - the husband had it plugged into the wrong socket!

https://geoffthegreygeek.com/testimonials/avril/

Carole

Thank you so much for your reply!
I can't thank you enough for getting back to me - it's really kind of you - I have asked so many people and sent emails and had no replies from anyone except you!!

Carole M, UK

Geoff the Grey Geek

2014-11-11T19:57:58+10:00

Carole M, UK

Thank you so much for your reply! I can't thank you enough for getting back to me - it's really kind of you - I have asked so many people and sent emails and had no replies from anyone except you!!

https://geoffthegreygeek.com/testimonials/carole/

Paula

Thank you for your advice. I truly appreciate your website and your help.

Paula,

Lockport, NY, USA

Geoff the Grey Geek

2014-11-11T19:51:50+10:00

Paula,

Lockport, NY, USA

Thank you for your advice. I truly appreciate your website and your help.

https://geoffthegreygeek.com/testimonials/paula/

Chris R

Thank you so much Geoff for all your patience and support, it is very very much appreciated.
Kind regards,

Chris R,

London, UK

Geoff the Grey Geek

2014-11-11T19:40:44+10:00

Chris R,

London, UK

Thank you so much Geoff for all your patience and support, it is very very much appreciated. Kind regards,

https://geoffthegreygeek.com/testimonials/3715/

Kim

Thank you SO much Geoff!
(...and thank you on behalf of the students who will be able to hear me in the future!)

Kim,

Los Angeles, CA, USA

Geoff the Grey Geek

2014-11-11T19:35:09+10:00

Kim,

Los Angeles, CA, USA

Thank you SO much Geoff! (...and thank you on behalf of the students who will be able to hear me in the future!)

https://geoffthegreygeek.com/testimonials/3714/

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Geoff the Grey Geek

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