How would this sound?

[gaza]

Hi people

I have been talking about using a couple of extra speakers for larger events recently and now i have found a pair of Peavey pro 15 speakers that i intend to buy on sunday, this is what i am thinking of doing for a couple of gigs that will have about 220 - 250 people.


Split the main signal from the mixer, one pair of leads going into one amp that gives out 500w at 4ohm per side, then into a pair of full range Peavey pro 15 speakers that run at 300w rms at 4ohm per side.

The other pair of signal leads will be going into a amp that is 400w at 8ohm per side and then to a pair of full range W audio 15 prs speakers that are 350w @ 8ohm per side.

Yes i know that a pair of base bins would probaly be better but this is where i am at the moment.

The thing is, because the same signal will going to each amp and then onto each pair of speakers, will there be to much base for the Peavey speakers that run at 300rms @ 4ohms?




As i said, i will only be using this set up know and then, but i would love some of your thoughts on how this would sound.


Unless someone on here has an active sub going cheap.

[Sapphire Disco]

My advice would be forget about the 4 ohm Peavey speakers , use the money to buy a pair of subs to match you W audio speakers and use one amp with passive crossover , if you want to use 2 amps get an active crossover but I think you are making things too complicated for yourself.

[Vectis]

i would love some of your thoughts on how this would sound.

Only slightly "louder" than using one set of full range on their own.

Don't fall into the trap of thinking it'll be twice as loud/powerful/whatever because it won't.

If I were you, and although I'm a fan of the Pro15s, I'd get a pair of subs instead which would relieve your tops of some of the hard work and allow you to drive the whole system harder. The greater dynamic range of the combined sets would also sound a whole lot more 'rounded'.

Appreciate budget is an issue, but you already have the second amp, so why active subs?

[Corabar Steve]

will there be to much base for the Peavey speakers
About 18" x 15" :sj:

I would imagine you wouldn't get much additional bass, as you are running 2 sets of full range speakers.

Also you are quoting 300w here 500w there etc, which is pretty meaningless. You need to worry about the SPL if you want to increase the sound.

I can illustrate this point with some of our own kit. We have a few sets of 350w speakers & a couple of 200w. The 200w are louder as they have a higher SPL rating than the 350w sets (shame they're only 12" as they don't give out much bass as a consequence & need subs for a fuller sound whereas the 350w 15" speakers give a lovely sound, but are only suited to smaller gigs that don't require as much volume)

[CRAZY K]

Hi people

I have been talking about using a couple of extra speakers for larger events recently and now i have found a pair of Peavey pro 15 speakers that i intend to buy on sunday, this is what i am thinking of doing for a couple of gigs that will have about 220 - 250 people.


Split the main signal from the mixer, one pair of leads going into one amp that gives out 500w at 4ohm per side, then into a pair of full range Peavey pro 15 speakers that run at 300w rms at 4ohm per side.

The other pair of signal leads will be going into a amp that is 400w at 8ohm per side and then to a pair of full range W audio 15 prs speakers that are 350w @ 8ohm per side.

Yes i know that a pair of base bins would probaly be better but this is where i am at the moment.

The thing is, because the same signal will going to each amp and then onto each pair of speakers, will there be to much base for the Peavey speakers that run at 300rms @ 4ohms?




As i said, i will only be using this set up know and then, but i would love some of your thoughts on how this would sound.


Unless someone on here has an active sub going cheap.

Why not consider a pair of Peavey Pro Subs ?

Better combination IMHO subject to mixed resistance values working together, you would have to chat to Peavey Tech boys--01536 461234

They are cheap enough second hand.

If your simply feeding Pro 15s with standard signal that also goes to W Audio im sure that wont be a problem on bass--I have been trying out Vectis Vibes
upgraded Pro 15s with the KAM amp he sold me recently and the middle/ bass end is impressive---well the wife was complaining about the noise--not like real subs but plenty of punch.

My only advice on the speakers--working with 200-250--as they say in the best Cowboy Films















HANG EM HIGH:cowboy:

[gaza]

Only slightly "louder" than using one set of full range on their own.

Don't fall into the trap of thinking it'll be twice as loud/powerful/whatever because it won't.

If I were you, and although I'm a fan of the Pro15s, I'd get a pair of subs instead which would relieve your tops of some of the hard work and allow you to drive the whole system harder. The greater dynamic range of the combined sets would also sound a whole lot more 'rounded'.

Appreciate budget is an issue, but you already have the second amp, so why active subs?


The bass bins that i had were a liitle to large to transport.

[gaza]

Why not consider a pair of Peavey Pro Subs ?
Better combination IMHO subject to mixed resistance values working together, you would have to chat to Peavey Tech boys--01536 461234

They are cheap enough second hand.

If your simply feeding Pro 15s with standard signal that also goes to W Audio im sure that wont be a problem on bass--I have been trying out Vectis Vibes
upgraded Pro 15s with the KAM amp he sold me recently and the middle/ bass end is impressive---well the wife was complaining about the noise--not like real subs but plenty of punch.

My only advice on the speakers--working with 200-250--as they say in the best Cowboy Films















HANG EM HIGH:cowboy:



But the Peavey subs would be 4ohms and the w audio ( which would be working as the tops) are 8ohm

Or do you mean run of two seperate amps?

[gaza]

Only slightly "louder" than using one set of full range on their own.

Don't fall into the trap of thinking it'll be twice as loud/powerful/whatever because it won't.

If I were you, and although I'm a fan of the Pro15s, I'd get a pair of subs instead which would relieve your tops of some of the hard work and allow you to drive the whole system harder. The greater dynamic range of the combined sets would also sound a whole lot more 'rounded'.

Appreciate budget is an issue, but you already have the second amp, so why active subs?




So i am wrong in thnking that there will be a large increase in volume?


Ps. sorry, forgot about the muti quote botton.

[Corabar Steve]

Or do you mean run of two seperate amps?
Which is what you're planning to do anyway isn't it?

If that's the case, sell your existing subs & get some that are more manageable (forget about the second set of full range).

If it's only for a few gigs, why not hire in some subs?

[Vectis]

So i am wrong in thnking that there will be a large increase in volume?

You are indeed wrong.

As has been alluded to already, "volume" is mostly a result of the SPL that the speaker is capable of pushing out ... nothing whatsoever to do with how many watts of electrical power it consumes in order to do it. My Toyota Previa slurps petrol at a similar rate to an M3, but I know which would hit 60 first...

Someone who can put their finger on the facts far more readily than me will no doubt be along with the logarithmic formula that will explain this better but, put in simple terms, doubling up the speakers won't double up the "volume" unless the new speakers' SPL is approaching double that of the old... which in this case is most unlikely.

You'll get a noticeable increase... just.

[Corabar Steve]

If it's only for a few gigs, why not hire in some subs?
http://www.powerhousehire.co.uk/quicklinks.php?equipment-type-cat=powered-speakers

http://www.powerhousehire.co.uk/quicklinks.php?equipment-type-cat=speakers-and-accessories

[gaza]

Which is what you're planning to do anyway isn't it?

If that's the case, sell your existing subs & get some that are more manageable (forget about the second set of full range).

If it's only for a few gigs, why not hire in some subs?


So, if i ran i amp to drive the subs and the other amp to drive the tops, how would i wire those up?

Because my main amp is only 400w per side @ 8ohms it would strugle a little to push the subs and tops for a larger venue, which is why i a mentioned using two amps.

[Vectis]

So, if i ran i amp to drive the subs and the other amp to drive the tops, how would i wire those up?

Well on the cheap, exactly as you described in post #1.

Although a crossover unit would be preferable at some stage when funds permit. Then you're just sending the 'relevant' signal to the amp rather than full-range.

[Corabar Steve]

A crossover & 2 amps seems the logical solution

[gaza]

Ok, here is another question
Could i run a single passive sub from one of the amps in bridge mode?

[Excalibur]

Only slightly "louder" than using one set of full range on their own.

Don't fall into the trap of thinking it'll be twice as loud/powerful/whatever because it won't.

You will however be able to spread the sound more, if that helps. Volume increase will not be perceived as huge.


So i am wrong in thnking that there will be a large increase in volume?
.
Yes. Useful, but minimal. Nowhere even close to twice as loud.


So, if i ran i amp to drive the subs and the other amp to drive the tops, how would i wire those up?
.
Active crossover. You have two amps already, use them.


Ok, here is another question
Could i run a single passive sub from one of the amps in bridge mode?
Yes, but don't even consider it.

[gaza]

http://www.powerhousehire.co.uk/quicklinks.php?equipment-type-cat=powered-speakers

http://www.powerhousehire.co.uk/quicklinks.php?equipment-type-cat=speakers-and-accessories


Thanks for that Steve, i am going to hire the Mackie SWA 1501, 500 watt 15"

So would this be ok with my W audio 15prs as the tops for about 240 people?

[gaza]

Thanks for that Steve, i am going to hire the Mackie SWA 1501, 500 watt 15"

So would this be ok with my W audio 15prs as the tops for about 240 people?



BUMP:)

[disco2dance]

If your stuck for space just get 1 sub it makes all the differance, i use a a pair of jbl tr125 tops they are 15" driver and have an spl of 135 they are very loud and never let me down however in bigger venues they dont throw much bass so i purchased a pair of 18" peavey subs and just use one on a seperate amp and its great. dont forget people need to be able to stand up on the danceflow so you just want a nice acceptable level with a bit of heartpounding bass at the right times.