Forums Music Sound Engineering Sound System How To…

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  • #1042285
    Avatarnoname
    Participant

    I’ve done some thinking, and bounced a few ideas off of Raj and Dr B on the creation of a (comprehensive) “how to” thread/section for sound systems, and thought I would post the ideas here for people to add their two penneth worth (and maybe even volunteer to help write…:groucho:) I won’t be starting until after our last outdoor party in any case, and any input would be greatly appreciated.

    My plan is to split the info into a linked set of posts (sort of like web pages, but using the BBcode the forum uses). I’ve got a standalone editor for BBcode (using the basic tags like the formatting ones, url, quote, img etc), so I can make them up and then send them to one of the moderators or other volunteers for editing etc before they get posted… It’s open source too, so anyone who wants to use it – it’s called bbEditor…

    The sections I’ve come up with so far are:

    Basic audio theory

    Characteristics of an audio wave, and how it is perceived/interpreted by our hearing.

    1. The physics of audio transmission in air.
    2. The biology of the human ear.

    How audio is manipulated or created for the purpose of amplification.

    1. Audio sources – string, reed, percussive, brass, voice and synthetic.
    2. Acoustic amplification – the soundboard, and various forms of resonant chambers, tubes and horns.
    3. Audio Electronics 101 – Reproduction in analogue form.
    4. Audio electronics 01100101 – Reproduction in digital form.
    5. Audio electronics 0065 – Compressing by various means.

    Audio amplifiers and other processing equipment

    1. Audio amplifiers (a basic introduction)
    2. Crossovers, what they do, and why.
    3. Mixers – what they do, and why.
    4. Equalisation in it’s various forms.
    5. Compressors, expanders and exciters.

    The speaker cabinet, and drivers.

    1. Closed box designs.
    2. Ported, or vented designs.
    3. Thiele/Small ported radiators.
    3. Horn and folded/scoop designs.
    4. Other “exotic” designs (flat speakers, shell types – ie the “Ammonit” etc, and any others that don’t fit the standard categories).
    5. Types of speaker driver.
    6. Multi driver cabinets and “drone cones”.

    Rig design

    1. Planning for a particular purpose – what you should take account of, and what can be ignored.
    2. Designing for modularity and robustness – why you should.
    3. Efficient use of time – what to design and build yourself, and what to buy ready made.
    4. Design flowchart, and how to estimate build cost and time.
    5. Power – working out the requirements, and working within safe limits.
    6. Matching amplifiers with speakers properly.
    7. Speaker cabinets – designing the boxes, and matching the drivers.
    8. Linking it all together.

    Rig building and maintenance

    Building and testing

    Intro: Safety requirements, and some words of good advice to save you ending up deep baked and crispy….
    1. Materials and equipment needed (and some good places to find them).
    2. Building the speaker boxes and loading them.
    3. Hardwiring into flightcases to save yourself endless plugging and un-plugging (and protect equipment obviously).
    4. Ground up building of the electronics (places to find this info if you’re wanting to do it hardcore style).
    5. Testing out for the first time.

    General maintenance and safety on the road

    1. Things you need to check before every use.
    2. Things you need to look out for and remedy if they happen.
    3. Yearly check ups.
    4. Fault tracing should it all go pear shaped at a gig.
    5. Essential “road” toolbox list.

    Rig Power (a generator survival guide)

    This is not really my field of expertise (although thanks to DJ Richie, I now know a lot more than I used to…) but I think it is a fairly essential part of any sound system how to…

    That’s as far as I’ve got. Any input greatly appreciated (especially if you want to volunteer to do/help do any of the sections…:wink:)

    #1119180
    Avatarelretardo87
    Participant

    Power distribution….the most forgotten about part of sound systems.

    Seen far too many people running “8kW” of sound system off one 13a plug socket and loads of multitaps.

    #1139919
    Avatarelretardo87
    Participant

    Power distribution….the most forgotten about part of sound systems.

    Seen far too many people running “8kW” of sound system off one 13a plug socket and loads of multitaps.

    #1119186
    AvatarTek Offensive
    Participant

    wish i could help you on this one but my soundsystem knowledge is fairly limited. most likely nothing i can add that you wont already know in greater detail..

    will be great when its done.. very useful!

    #1139925
    AvatarTek Offensive
    Participant

    wish i could help you on this one but my soundsystem knowledge is fairly limited. most likely nothing i can add that you wont already know in greater detail..

    will be great when its done.. very useful!

    #1119187
    AvatarTek Offensive
    Participant

    especially this section

    ”1. Planning for a particular purpose – what you should take account of, and what can be ignored.
    2. Designing for modularity and robustness – why you should.
    3. Efficient use of time – what to design and build yourself, and what to buy ready made.
    4. Design flowchart, and how to estimate build cost and time.
    5. Power – working out the requirements, and working within safe limits.
    6. Matching amplifiers with speakers properly.
    7. Speaker cabinets – designing the boxes, and matching the drivers.
    8. Linking it all together.”

    #1139926
    AvatarTek Offensive
    Participant

    especially this section

    ”1. Planning for a particular purpose – what you should take account of, and what can be ignored.
    2. Designing for modularity and robustness – why you should.
    3. Efficient use of time – what to design and build yourself, and what to buy ready made.
    4. Design flowchart, and how to estimate build cost and time.
    5. Power – working out the requirements, and working within safe limits.
    6. Matching amplifiers with speakers properly.
    7. Speaker cabinets – designing the boxes, and matching the drivers.
    8. Linking it all together.”

    #1119160
    AvatarAnonymous

    well done, canny wait to read what u put together.

    #1139898
    AvatarAnonymous

    well done, canny wait to read what u put together.

    #1119205
    AvatarRuff Beat Provider
    Participant

    This would be extremely helpful!
    Should be getting a rig soon but dont wanna just bodge it together something like this would be great!

    #1139943
    AvatarRuff Beat Provider
    Participant

    This would be extremely helpful!
    Should be getting a rig soon but dont wanna just bodge it together something like this would be great!

    #1119178
    Avatargloballoon
    Participant

    good to see people sharing their knowledge

    bring it on

    #1139917
    Avatargloballoon
    Participant

    good to see people sharing their knowledge

    bring it on

    #1119192
    Avatarnoname
    Participant

    Cool – I will be getting a start on it after Cluanie (which is in 2 weeks time). I planned to start at the beginning (as it’s usually the best place to start:wink:), but as there has been some interest in the later sections I am happy to take requests and start there (bear in mind the whole thing is likely to take a good while to complete, so if you want specific parts to be done first, let me know).

    @ elretardo87 – Power distro will be taken into account in the last section (and absolutely right – I too have seen many “8K” rigs being powered over a standard 13amp house supply – very silly indeed:you_crazy). As I say, I’m kinda hoping I can get DJ Richie to have a go at that section, as he is much more of an expert on it than I am…

    #1139931
    Avatarnoname
    Participant

    Cool – I will be getting a start on it after Cluanie (which is in 2 weeks time). I planned to start at the beginning (as it’s usually the best place to start:wink:), but as there has been some interest in the later sections I am happy to take requests and start there (bear in mind the whole thing is likely to take a good while to complete, so if you want specific parts to be done first, let me know).

    @ elretardo87 – Power distro will be taken into account in the last section (and absolutely right – I too have seen many “8K” rigs being powered over a standard 13amp house supply – very silly indeed:you_crazy). As I say, I’m kinda hoping I can get DJ Richie to have a go at that section, as he is much more of an expert on it than I am…

    #1119207
    AvatarNadz
    Participant

    This sounds like a great idea, as someone who knows very little about soundsystems but is currently getting involved with one this sort of thing would be perfect. Fair play to ya for spreadin the knowledge for free. :bounce_fl:bounce_g:

    #1139946
    AvatarNadz
    Participant

    This sounds like a great idea, as someone who knows very little about soundsystems but is currently getting involved with one this sort of thing would be perfect. Fair play to ya for spreadin the knowledge for free. :bounce_fl:bounce_g:

    #1119185
    Avatarmagneze
    Participant

    Great idea. :horay:

    #1139924
    Avatarmagneze
    Participant

    Great idea. :horay:

    #1119194
    Avatarsuffolkravas
    Participant

    hehe very nice, i woul actually find this very useful as well as i am part of a rig but im definately next to useless technically, im the one who finds the best speakers with the best sound and best prices and amps that power em perfectly, but as for the whole hooking up and electronic side of thins, im fecking useless, so this would be very useful. ill have a check when you done to see if theres anything useful i can add, cheers mate! raaa

    #1139933
    Avatarsuffolkravas
    Participant

    hehe very nice, i woul actually find this very useful as well as i am part of a rig but im definately next to useless technically, im the one who finds the best speakers with the best sound and best prices and amps that power em perfectly, but as for the whole hooking up and electronic side of thins, im fecking useless, so this would be very useful. ill have a check when you done to see if theres anything useful i can add, cheers mate! raaa

    #1119195
    Avatarsuffolkravas
    Participant
    noname wrote:
    I too have seen many “8K” rigs being powered over a standard 13amp house supply – very silly indeed:you_crazy). As I say, I’m kinda hoping I can get DJ Richie to have a go at that section, as he is much more of an expert on it than I am…

    hehe our rig is exactly 8k at the moment, but we power it with $2000 worth of amps :weee: amps are more expensive than the speakers themselves!! you gotta have the good ones tho if your serious about your rig :love:

    #1139934
    Avatarsuffolkravas
    Participant
    noname wrote:
    I too have seen many “8K” rigs being powered over a standard 13amp house supply – very silly indeed:you_crazy). As I say, I’m kinda hoping I can get DJ Richie to have a go at that section, as he is much more of an expert on it than I am…

    hehe our rig is exactly 8k at the moment, but we power it with $2000 worth of amps :weee: amps are more expensive than the speakers themselves!! you gotta have the good ones tho if your serious about your rig :love:

    #1119161
    AvatarAnonymous

    Me amp got that hot tother night its warped the fans in it :laugh_at:

    #1139899
    AvatarAnonymous

    Me amp got that hot tother night its warped the fans in it :laugh_at:

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