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SC Events
02-06-2009, 03:00 PM
Hi All,

As I have mentioned before, I have 2 pairs of speakers:

2 x ProSound 300W (150W RMS) - Here (http://www.maplin.co.uk/Module.aspx?ModuleNo=220544)

2 x R.C.L. 600W (300W RMS) - Here (http://cgi.ebay.co.uk/15"-600W-Speakers-Disco/DJ/Karaoke/Vocal/1200W-Max_W0QQitemZ270399546195QQcmdZViewItemQQimsxZ2009 0530?IMSfp=TL090530126001r2978)

I have to Amps:

1 x ProSound 1600W - Here (http://www.maplin.co.uk/module.aspx?moduleno=220537)

1 x Behringer EP1500 - Here (http://www.behringer.com/EN/Products/EP1500.aspx)


At the minute I run the ProSound Speakers off the ProSound amp and the R.C.L. Speakers off the Behringer Amp and are bridged.

Do I need to use a Crossover? If so, what would you recommend.

I appreciate your help and advice as always,

Shaun
02-06-2009, 03:09 PM
http://www.mobilediscodirectory.co.uk/forums/showthread.php?p=346400#post346400

Topic moved

Cj_The_Dj
02-06-2009, 03:13 PM
Crossover will only work if your using bass bins and tops i belive. i wouldnt brige the amps as yo will only get a mono sound.

somthing like This (http://www.gfprod.com/gfpphotos/GFPY.JPG) work

SC Events
02-06-2009, 03:22 PM
Sorry Shaun, Thanks.

Cheers for the help CJ. :beer1:

Excalibur
02-06-2009, 06:46 PM
Crossover will only work if your using bass bins and tops i belive. i wouldnt brige the amps as yo will only get a mono sound.

somthing like This (http://www.gfprod.com/gfpphotos/GFPY.JPG) work

Well yes, and then again, no. ;) :D It will work best with dedicated bass bins and tops. If you use full range cabs, one pair will only get the low signal, so I'd suggest using the higher powered set for this, as you need more power for the subs. However: if you've not got dedicated bins, some people would suggest you basically run as you are, ie feed a full range signal to both pairs, and avoid bridging if possible. There's no hard and fast rule on this, it's a lot to do with personal taste. Corabar Steve, if I remember right, uses two pairs of full range cabs, and uses one pair full range, one pair subs. If it sounds right, it is right. ;) ;)

Tony Scott
02-06-2009, 08:30 PM
Do I need to use a Crossover? If so, what would you recommend.

No you don't need a x-over with this set-up.



At the minute I run the ProSound Speakers off the ProSound amp and the R.C.L. Speakers off the Behringer Amp and are bridged.

Do you know what 'bridged' means? Do you mean you have the two signals to the amps linked (daisy chained)?

If you do have the ProSound bridged mono at 4ohms it will die very soon as it should only be presented with an 8ohm load(one 8ohm speaker).
The behringer however will handle a 4ohm bridged load(two 8ohm speakers)

Running the system as you are doing is probably the best set-up, as long as you are NOT running the ProSound 4ohm bridged. :)

Excalibur
02-06-2009, 08:57 PM
No you don't need a x-over with this set-up.




Do you know what 'bridged' means? Do you mean you have the two signals to the amps linked (daisy chained)?

If you do have the ProSound bridged mono at 4ohms it will die very soon as it should only be presented with an 8ohm load(one 8ohm speaker).
The behringer however will handle a 4ohm bridged load(two 8ohm speakers)

Running the system as you are doing is probably the best set-up, as long as you are NOT running the ProSound 4ohm bridged. :)
Bridged, daisy chained, come on if you're going to insist on the correct terms, this is going to need advanced level advice. I'm out. :( :(

SC Events
02-06-2009, 09:28 PM
Hi,

Thanks for your replies.

By bridged I mean, I have a Phono to Jack lead from the Master Out on my mixer, and I plug one of the jacks in to each amp, then run speakons to the speakers.

I have made a quick drawing to show you (I hope you can understand it :D):

5758

Excalibur
03-06-2009, 06:56 AM
Hi,

Thanks for your replies.

By bridged I mean, I have a Phono to Jack lead from the Master Out on my mixer, and I plug one of the jacks in to each amp, then run speakons to the speakers.

I have made a quick drawing to show you (I hope you can understand it :D):


A picture is worth a thousand words. ;) :D :D Excellent diagram, now we know what we are dealing with.

You're actually splitting the signal into left and right in a lopsided way, cos the amps/cabs you have are different.
A better way would be feed one amp from the main output, and one from the booth. Or feed the first amp from the main, and daisy chain the second amp from that, ie conect the unused inputs on the first amp to the inputs on the second. Since they're usually connected in parallel, that's not a bad way.

Edit: Sorry, no diagrams from me, that's too tricky for a numpty.
BTW, what's your mixer?

Cj_The_Dj
03-06-2009, 08:08 AM
Would the splitter be ok? #3

SC Events
03-06-2009, 12:04 PM
A picture is worth a thousand words. ;) :D :D Excellent diagram, now we know what we are dealing with.

You're actually splitting the signal into left and right in a lopsided way, cos the amps/cabs you have are different.
A better way would be feed one amp from the main output, and one from the booth. Or feed the first amp from the main, and daisy chain the second amp from that, ie conect the unused inputs on the first amp to the inputs on the second. Since they're usually connected in parallel, that's not a bad way.

Edit: Sorry, no diagrams from me, that's too tricky for a numpty.
BTW, what's your mixer?

Thanks Peter! :)

My Mixer is a Numark DM1635 - it's has been discontinued for a while I think.

Sapphire Disco
03-06-2009, 12:37 PM
To be honest I would get rid of both your sets of speakers, get what you can for them and buy something like this they look good value to me.

http://www.htfr.com/more-info/MR238068

Then just run them off your Behringer amp only, keep your other amp as back up, obviously if you can spend more on speakers it would be better.

SC Events
03-06-2009, 12:48 PM
800W RMS for 4 speakers and I have no way of transporting speakers that siz. What I have now is 900W RMS and can just about fit them in the car.

Thanks though!

Sapphire Disco
03-06-2009, 01:09 PM
800W RMS for 4 speakers and I have no way of transporting speakers that siz. What I have now is 900W RMS and can just about fit them in the car.

Thanks though!

I think you are missing the point , sound wise that Wharfedale set up would sound so much better than what you have now and probably be louder as well if you needed it, if you really can't transport subs then you would be much better off with one pair of 15" good quality full range speakers, instead of the mishmash you have now.

Sorry to be blunt but I just don't see the point of your speaker set up the way it is :)

SC Events
03-06-2009, 01:23 PM
You are probably right but I have to transport all my gear in one of these unfortunately:

http://www.silverdalecc.com/Cars/Black%20Fiesta%20Zetec%205dr%200408%20(1)2.JPG

and can only just about fit my gear in.

I'll definitely think about it for the future though.

Thanks Again :)

Tony Scott
03-06-2009, 01:26 PM
Hi,

Thanks for your replies.

By bridged I mean, I have a Phono to Jack lead from the Master Out on my mixer, and I plug one of the jacks in to each amp, then run speakons to the speakers.

I have made a quick drawing to show you (I hope you can understand it :D):

5758

As I suspected your amps are not bridged. Bridging an amp involves inverting one of the signals and connecting the speaker(s) across both live outputs.
Do what Pete said :)

Tony Scott
03-06-2009, 01:44 PM
As I suspected your amps are not bridged. Bridging an amp involves inverting one of the signals and connecting the speaker(s) across both live outputs.
Do what Pete said :)

Forget that I've just had another look at your diagram, surfing on a BlackBerry has its limitations! :)

Excalibur
03-06-2009, 07:31 PM
I think you are missing the point , sound wise that Wharfedale set up would sound so much better than what you have now and probably be louder as well if you needed it, if you really can't transport subs then you would be much better off with one pair of 15" good quality full range speakers, instead of the mishmash you have now.

Sorry to be blunt but I just don't see the point of your speaker set up the way it is :)
I would agree with that view. Sadly the 15" cabs I'd recommend are way too big to fit in that motor easily. :( I struggle to get them in an Astra estate. Justin couldn't get them in an Escort estate. If anyone suggested something fitting the bill then that would help.


As I suspected your amps are not bridged. Bridging an amp involves inverting one of the signals and connecting the speaker(s) across both live outputs.
Do what Pete said :)


Forget that I've just had another look at your diagram, surfing on a BlackBerry has its limitations! :)
I do hope that doesn't mean " Don't do what Pete said" :confused: ;) :D

OK Scott, I've had a look at the pdf manual for your mixer, and it has a zone output with volume control. Easy way to continue as you are is to run one amp from main out, and other amp from zone. See page 17 on your manual, there's a piccy there.

As stated earlier, this isn't really the best option, but if you are constrained by transport and budget, well so be it.

SC Events
03-06-2009, 07:33 PM
Cheers Boss! :)

Thanks for taking the time to go through the manual and everything - much appreciated :beer1: :beer1: :beer1:

kjdiscos
03-06-2009, 07:35 PM
I would agree with that view. Sadly the 15" cabs I'd recommend are way too big to fit in that motor easily. :( I struggle to get them in an Astra estate. Justin couldn't get them in an Escort estate. If anyone suggested something fitting the bill then that would help.




I do hope that doesn't mean " Don't do what Pete said" :confused: ;) :D

OK Scott, I've had a look at the pdf manual for your mixer, and it has a zone output with volume control. Easy way to continue as you are is to run one amp from main out, and other amp from zone. See page 17 on your manual, there's a piccy there.

As stated earlier, this isn't really the best option, but if you are constrained by transport and budget, well so be it.

Which cabs are these peter ?

Excalibur
03-06-2009, 08:04 PM
Which cabs are these peter ?

Class-D CD 15SP's.

kjdiscos
03-06-2009, 09:05 PM
Class-D CD 15SP's.

you cant fit them in an escort estate :eek: , Surely they go in on there back or side, Obv not standing up ?

Excalibur
03-06-2009, 09:10 PM
you cant fit them in an escort estate :eek: , Surely they go in on there back or side, Obv not standing up ?

You can get them in, but the resulting space is difficult to get anything else into. Amazingly, the CD215's leave more useful space in a small estate. :eek: ;) ;)

kjdiscos
03-06-2009, 09:11 PM
You can get them in, but the resulting space is difficult to get anything else into. Amazingly, the CD215's leave more useful space in a small estate. :eek: ;) ;)

shockin