Main Forums >> Production - Mixing, Mastering, Gear & Techniques
        Print Thread

Pages: 1
Magzire



Joined: 21/04/10
Posts: 3
Best way to connect six speakers?? new
      #828663 - 21/04/10 06:28 PM
[image][/image]

Want to connect 6 speakers (two subs,four mains) to a KAM DJ3 SD AMP.(2 x 95 watt, 70 watt per channel).

In the picture it maps it out along with there values.

Just wondering whats the best way, series/parallel or both.

Forgive my noobieness. Any tips or suggestion will be appreciated.


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
Mike Stranks
active member


Joined: 03/01/03
Posts: 3062
Loc: Oxford, UK
Re: Best way to connect six speakers?? new [Re: Magzire]
      #828664 - 21/04/10 06:42 PM
Welcome!

First thought is that the amp is woefully underpowered for what you want to do....

But anyway... does the amp handbook/manual give power outputs for various impedances - eg 90 watts (RMS) per channel into 4 ohms? If so does it specify a rating for 2 ohms?

Next question... do your subs have built-in high-pass filters on a speaker output so that the bass can be filtered out before the signal reaches the tops?

What's the impedance of each of the top cabinets?

Answers on a postcard please to...

To be continued...


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
Magzire



Joined: 21/04/10
Posts: 3
Re: Best way to connect six speakers?? new [Re: Magzire]
      #828665 - 21/04/10 07:01 PM
Hey Mike

Link Kam DJ3 SD

Well thats the amp and for your two first questions I have no idea, sorry.

And for the subs there just basic woofers. I doubt they have any filtering.

The impedance of each of the top cabinets are 2x6 ohms (140watt) and 2x8 ohms (around 80-120 watt).

Sorry i couldn't be more of help but thanks for taking an interest.


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
Magzire



Joined: 21/04/10
Posts: 3
Re: Best way to connect six speakers?? new [Re: Magzire]
      #828666 - 21/04/10 07:07 PM
Amp isn't great, agreed. Any suggestions on a good amp for this job?


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
Mike Stranks
active member


Joined: 03/01/03
Posts: 3062
Loc: Oxford, UK
Re: Best way to connect six speakers?? new [Re: Magzire]
      #828669 - 21/04/10 07:54 PM
Others and I will need a bit more help here.

The pictures in your latest post... are they one set of tops? They can't be your sub-woofers because of the configuration of them.

I've looked at the spec that you linked to... where do those speakers fit into your proposed set-up - if at all? The spec for the amp tells me little. I think this is probably designed to be a bedroom system for budding DJs to practice at home. My biggest concern is that there are no ratings for that output power so it's meaningless. It could well be Peak Music Power - which means that the actual output is something like 17 watts a side.

I don't wish to be harsh, but from the amp spec and the picture of the speakers you've posted I'd suggest that you need to think again.

What is it you want to do? For what do you want to use the system you're seeking to put together - is it disco or to amplify a band?

You asked about amps. That's to a degree dependent on what you want to do and what speakers you'll be using, but as a guide you won't really get anything that you can use for serious amplification (NB not loud, but serious) for less than £125-£150 - and those are the bargain basement prices. Then there'll be speakers in addition. If you really do want a subs+tops configuration you'll almost certainly need a beefier - and more expensive - amp

Anyway, tell us what you want to do - in as much detail as possible including size of venues - and we'll be able to advise more precisely.

I don't want to be a party-pooper, but there's no point in pretending that you can do something serious with what you've got when all that's likely to happen is a puny sound which also blows-up your amp.


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
grab



Joined: 08/07/07
Posts: 2626
Loc: Cambridge, UK
Re: Best way to connect six speakers?? new [Re: Magzire]
      #828815 - 22/04/10 10:40 AM
Looking at those speakers, I'm pretty sure you're looking at wiring up speakers in your living room - is that right? Especially since your drawing says the speakers are Sony and JVC. Power-wise, I seriously doubt that's RMS, so gnore any "peak" or "peak music" power values - you want RMS power. If I had to guess, I'd say those powers were "peak music", in which case divide by 4 to get a guess at RMS. And if you got the speaker impedances from a resistance check, my nominal 8ohm speakers give a resistance of around 6ohms, which I guess ties in with yours. So the speakers are probably within the capacity of the amp, even if you parallel up two per channel.

The big question. Why do you want four main speakers in the first place? It's not going to be surround-sound, bcos you don't have separate things sent to each speaker. If you want more volume, this isn't going to help much - doubling the number of speakers does *not* double the volume. If you just want more of a "fill" kind of effect to stop the sound just coming from the front, then you've got the problem that regardless of whether you wire the tops in series or parallel, you've still got no control over the relative volumes of them. And if you want to pipe music to a separate room, again you've got no control over how loud it is there. You could probably get away with paralleling them if you want to try it, but whatever you're wanting to do with them, the result is almost certainly going to be disappointing.

Next problem is subs. The simple answer is you can't use them effectively with that setup. The long answer is that if you only use two main speakers, you could probably get away with parallelling the subs with those speakers. (If you had already parallelled up the other two speakers as well, you're going to overload the amp so that ain't happening.) However you're going to have a horrible boomy load of crap happening at low-mid frequencies, where the sub and mains overlap frequency-wise. You're also going to be unable to control the relative volumes of the subs and mains, which again is going to hurt your sound. If you're lucky, having JVC mains and JVC subs might mean that they have built-in crossovers so that one stops at the same point as the other starts, and they might be set up to be roughly complementary loudnesses. But I wouldn't bank on it.

In short, you can parallel up any two speakers on one output and you should get away with it. No harm in trying. But whatever you wanted out of this system, you're almost certainly not going to find it. The *real* answer is to get two more amps, I'm afraid.

And TBH, if you're looking at spending any significant money on playing your music, the answer really is to get better speakers than plastic JVCs.


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
johnny h



Joined: 24/07/06
Posts: 2270
Re: Best way to connect six speakers?? [Re: Magzire]
      #828876 - 22/04/10 01:45 PM
Quote Magzire:

[image][/image]

Want to connect 6 speakers (two subs,four mains) to a KAM DJ3 SD AMP.(2 x 95 watt, 70 watt per channel).

In the picture it maps it out along with there values.

Just wondering whats the best way, series/parallel or both.

Forgive my noobieness. Any tips or suggestion will be appreciated.




Best not to bother tbh. Ditch what you've got a get a decent system.


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
Pages: 1

Rate this thread

Jump to

Extra Information
2 registered and 22 anonymous users are browsing this forum.

Moderator:  David Etheridge, James Perrett, zenguitar, Martin Walker, Hugh Robjohns, Zukan, Frank Eleveld, Will Betts 
Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is enabled
      UBBCode is enabled
Rating:
Thread views: 2775

 

Home | Search | News | Current Issue | Tablet Mag | Articles | Forum | Subscribe | Shop | Readers Ads

Advertise | Information | Digital Editions | Privacy Policy | Support

June 2013
On sale now at main newsagents and bookstores (or buy direct from the
SOS Web Shop)
SOS current Print Magazine: click here for FULL Contents list
Click image for June 2013
DAW Tips from SOS
 

Email: Contact SOS

Telephone: +44 (0)1954 789888

Fax: +44 (0)1954 789895

Registered Office: Media House, Trafalgar Way, Bar Hill, Cambridge, CB23 8SQ, United Kingdom.

Sound On Sound Ltd is registered in England and Wales.

Company number: 3015516 VAT number: GB 638 5307 26

         

All contents copyright © SOS Publications Group and/or its licensors, 1985-2013. All rights reserved.
The contents of this article are subject to worldwide copyright protection and reproduction in whole or part, whether mechanical or electronic, is expressly forbidden without the prior written consent of the Publishers. Great care has been taken to ensure accuracy in the preparation of this article but neither Sound On Sound Limited nor the publishers can be held responsible for its contents. The views expressed are those of the contributors and not necessarily those of the publishers.

Web site designed & maintained by PB Associates | SOS | Relative Media