MatDJ 0 Posted February 21, 2006 Report Share Posted February 21, 2006 Hi, Need to sort out my sound system and so need to know what sort of spec speakers i will need to get to give a good sound in a school sports hall filled with a few hundred people... I will need full range speakers and subs. what would be the best size set up to go for to give this kind of volume... also what is the total rms you guys carry around? many thanks matt http://www.dj-forum.co.uk/html//emoticons/smile.gif Link to post Share on other sites
High Fidelity 0 Posted February 21, 2006 Report Share Posted February 21, 2006 I thought you were already looking at some speakers: http://www.dj-forum.co.uk/html//emoticons/533.gif QUOTE Posted on: Feb 16 2006, 01:07 PM Replies: 8 Views: 131 I need to buy some larger speakers to fit my amps... the amp is 2 x 500w rms at 4 ohms Would these speakers be able to keep up with the amp and would it be suitable for larger venues if i got another pair for my other amp? EDIT: clicky ie two amps with 4 of these speakers attached.... 2000w rms and are they good speakers?? or can some one guide me in the right direction? Quitting Smoking & Drinking doesn't make you live longer It just feels like it. Link to post Share on other sites
DJ Marky Marc 0 Posted February 21, 2006 Report Share Posted February 21, 2006 when I play a school disco with 2 or 300 kids I use a top cab with dual 15" drivers plus horn and base bins... each cab is 500w RMS and base bins are 500w RMS add 200 more kids and I would double the setup to 4 tops and 4 base bins.. <a href="http://www.djassociates.org"><img src="http://www.djassociates.org/anims/compres_banner.gif" alt="Join the DJ Associates Disc Jockey Association" border="0" width="468" height="60"></a> Link to post Share on other sites
MatDJ 0 Posted February 21, 2006 Author Report Share Posted February 21, 2006 QUOTE I thought you were already looking at some speakers: yea i was but they arent much bigger than what i have now, I wasnt wanting to spend a few hundred quid on some speakers that would not make alot of difference. I needed to know what sort of size other dj's use and apparently its alot larger than those... matt Link to post Share on other sites
norty303 0 Posted February 21, 2006 Report Share Posted February 21, 2006 It all depends on how much noise you want to make. Have you considered renting in a rig for this gig rather than trying to supply it yourself? Otherwise you may end up with a garage full of speakers that you only ever used for this gig. And they may also end up being rubbish because you skimped on the outlay. When you start to get beyond small disco size things change rather radically. For a start you don't really want to be botching lots of different cabs together or it will sound terrible. I'm doing a gig beginning of April for about the same number and i'm buying new mid/tops (12" horn and 2" comp driver and slot tweeters) They're costing £1k but will take 2k of power and hit 135db at max without distorting. This is the sort of kit you might want to look at to cover the job. If you're planning on using reflex loaded bins you'll be wanting around 8-10k of power in my opinion. DIY plans and pro audio related technical discussions www.speakerplans.com/forum Link to post Share on other sites
DiscoStudio 0 Posted February 22, 2006 Report Share Posted February 22, 2006 (edited) Funny you mentioned hireing in... We have just started PA & DJ Equipment rental service. I have 1K, 2.6k, 5K & 10K rigs for hire with free delivery, set-up and pack down in the Cheshire and South Manchester area. Edited February 22, 2006 by DiscoStudio <a href="http://www.djassociates.org"><img src="http://www.djassociates.org/anims/compres_banner.gif" alt="Join the DJ Associates Disc Jockey Association" border="0" width="468" height="60"></a> Link to post Share on other sites
Jimbo55 0 Posted February 22, 2006 Report Share Posted February 22, 2006 As a guide to RMS required, taken from the Crown website. Nearfield monitoring: 25 W for 85 dB SPL average (with 15 dB peaks), 250 W for 95 dB SPL average (with 15 dB peaks) Home stereo: 150 W for 85 dB SPL average (with 15 dB peaks), 1,500 W for 95 dB SPL average (with 15 dB peaks) Folk music in a coffee shop with 50 seats: 25 to 250 W Folk music in a medium-size auditorium, club or house of worship with 150 to 250 seats: 95 to 250 W Folk music at a small outdoor festival (50 feet from speaker to audience): 250 W Pop or jazz music in a medium-size auditorium. club or house of worship with 150 to 250 seats: 250 to 750 W Pop or jazz music in a 2000-seat concert hall: 400 to 1,200 W Rock music in a medium-size auditorium, club or house of worship with 150 to 250 seats: At least 1,500 W Rock music at a small outdoor festival (50 feet from speaker to audience): At least 1,000 to 3,000 W Rock or heavy metal music in a stadium, arena or ampitheater (100 to 300 feet from speaker to audience): At least 4,000 to 15,000 W. Jimbo Digital Fusion Entertainments Bose L1 system user. Link to post Share on other sites
DiscoStudio 0 Posted February 22, 2006 Report Share Posted February 22, 2006 That's quite a good guide, but I would say that it's a little underpowered. I allways make sure I have more than what I need; It's better to have and not need than to need and not have. http://www.dj-forum.co.uk/html//emoticons/biggrin.gif <a href="http://www.djassociates.org"><img src="http://www.djassociates.org/anims/compres_banner.gif" alt="Join the DJ Associates Disc Jockey Association" border="0" width="468" height="60"></a> Link to post Share on other sites
MatDJ 0 Posted February 22, 2006 Author Report Share Posted February 22, 2006 Clicky - these caught my eye. only problem is they are 1000w rms (2x500w rms per cab) and I have two amps that can give out 1000w rms each... techinically that means my amps should cover them but there are 2 connections per amp and the speaker only has one ( I think) how could I connect one amp to each speaker (I have a crossover to split the mixer to the 2 amps)?? also would these do away with the need for seperate active bass bins? many thanks matt Link to post Share on other sites
norty303 0 Posted February 22, 2006 Report Share Posted February 22, 2006 As an indication of how you can't go by those RMS figures tho... My cabs are (mostly) horn loaded and have sensitivities anwhere from 4 to 8 db higher than any reflex loaded system out there. That means i can hit the same SPL as a reflex loaded 10k rig using under 4000 watts. Benefits are 2 fold, i can carry less/smaller amps, or have plenty of power in reserve so my sound is cleaner. Downsides are initial expense, size/weight of cabs (especially large sub horns which go low). Funktion 1's 218 bass bins are very well designed, being only 900wrms for the whole cab, but they are very sensitive so they will go loud withoput requiring massive amp power to run them. Once you start adding horns to stacks of other horns you also get benefits from horn mouths coupling which you don't with reflex. DIY plans and pro audio related technical discussions www.speakerplans.com/forum Link to post Share on other sites
DJ Marky Marc 0 Posted February 22, 2006 Report Share Posted February 22, 2006 QUOTE only problem is they are 1000w rms (2x500w rms per cab) and I have two amps that can give out 1000w rms each No each speaker is 500w RMS 4ohms.... 1000 program 2000w peak... Find out what your amp give out at 4 ohm stereo you want 500w or more into 4 ohms to get the best out of these JBLs... the JRX are quite toppy and sound best when playing to a full room with the horn at head hight so it would be good if you could stand them on top of bass bins.... if you want to hear some JBLs come to one of my gigs this weekend or pop into my office with your fave CD and we will run some up so you know what your going to get... <a href="http://www.djassociates.org"><img src="http://www.djassociates.org/anims/compres_banner.gif" alt="Join the DJ Associates Disc Jockey Association" border="0" width="468" height="60"></a> Link to post Share on other sites
Jimbo55 0 Posted February 22, 2006 Report Share Posted February 22, 2006 I have posted a table in another thread reguarding spl and how it effects how much/little power is required to get the same levels. It does make some interesting reading. Jimbo Digital Fusion Entertainments Bose L1 system user. Link to post Share on other sites
MatDJ 0 Posted February 22, 2006 Author Report Share Posted February 22, 2006 (edited) Hi, think i am mistaken, it has two cones per cab and it said QUOTE 2 x 15"/1", 500W RMS so i assumed that was per cone, hence the x2... now realise im buying 2 cabs here aint I! wow was expecting that was just the one My amp: Skytec 6950 QUOTE Stereo output power RMS @ 0.1% THD = 2 x 500w maximum output power = 2 x 950w single channel drives 4 ohm load = 540w load impedance min = 4 ohms (taken from the manual) is the amp suitable?? and is the 540w a max value or rms?? many thanks Matt Edited February 22, 2006 by MatDJ Link to post Share on other sites
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