safehands
-
Content Count
36 -
Joined
-
Last visited
Content Type
Profiles
Forums
Calendar
Posts posted by safehands
-
-
perhaps you could clarify what you mean a bit more
you are going to use TWO amps to run one dual 18" cab?
also what make/model are the amps, some kick out on different terminals
i find this rather worrying, i think you need to expand more on the equipment being used
lol,2 warrior is1000w amps will be used to drive 1 dual 18" bass bin which is 1200w rms,so 1 amp=1 speaker,2 amps=2 speakers,the speakers are wired on there own so i can run 2 amps to drive them.i did use a peavey cs800x in bridge mode on its own to drive this bass bin,but it keeps going thermol on me as its not got the power,the 2 warriors will give me a lot more head room(800w) so should be fine,just want to no how to wire the speakon connector!hope this kind of explains lol
-
i am gonna run 2 amps in bridge to drive a double 18" bass bin,the bridge input is a speakon connection,bridge is always positive to positve,but on a speakon connector theres a + and a minus,so do i just join both wires and put it into the plus,then plug it in?or can i use the normal speaker terminals,ie red to red?
-
be carefull on there power ratings,i have a friend who recones speakers,there rms is is more like a peak rating,ie they may say 500w rms,when its more probably around the 350 w mark.
-
Check the DDT switch is on. This causes the amplifier to automatically reduce its output if it gets too hot to reliably work and shouldn't allow it to trip out.
Has it been serviced properly? Just because it's clean doesnt mean it's ok. Has it ever been repaired? Has it got its original Peavey transistors?
Are the speakers actually ok? You might have a voice coil gone, on bass duty you might not hear any difference. One speaker could be short in which case the amp will see a 2ohm load which may trip it. I once had a customer bring a mackie powered bass bin in for a 'service' because he said it would trip out half-way through the night. When I looked at it, the woofer was a direct short..it had continued to produce credible bass like this for months of discos until he'd 'decided' to have it 'serviced'. The burned-out woofer was a surprise to him.
A fellow engineer once showed me a Pioneer bass bin whose only fault symptom had been a resonance on The Prodigy-Breathe during the sustained low note. The driver was seized..so fried that the cone was jammed solid...yet it still produced bass nicely on anything except the Prodigy record and had done so in the nightclub for months!
Dont forget that running it bridged into 4 ohms means you're running it at maximum load, this is not a good idea even given the tank-like build quality of this old timer. Check the signal leads dont run too close to the speaker leads in case you have supersonic oscillation, unlikely but worth a mention.
SUPERSONIC OSCILATION,WHAT IS THAT LOL,anyway superstar,i used it last night,didnt cane the bass line and it never cut out once,i had it serviced by sound and light in leamington,bloke said its as good as new,yes i have the ddt switch set to on,yeah i no running in bridge mode isnt the best but havent got any choice at the minute as cant afford a behringer 2500,but i am getting there.on a brighter note,i said before bout my pro 15 compression drivers blowing,well i bought some soundlab 60w compression drivers,they are far superior to the peaveys,they are louder,clearer,and havent blown once,all for £20 the pair.
-
check the amps fans. are they working?
it does sound like the amp thermal cut out my studiomaster 3500ax does this . some amps do have a limiter button on the back to stop it cutting out. you could put this off but i wouldnt recommend it as you can do more damage!!!!!
hi dj cee,yeah fans working,had the amp serviced a few eeks bk,its like a mirror inside,no dust at all,think i will cut back on the bass tonight,then use another more powerful amp tommorow night.
-
hi all,have got a residency in a town centre boozer,nice sounding system except the yamaha 18 inch subs tend to cut out,around an hour and a half into playing,i have wired them up together to get 4 ohms,and they are run bridged on a peavey cs800 x,which gives 1200w out in bridged mode,the yamaha are 600w rms each.
amp isnt clipping at all,it just goes off then comes on around 1 minute later,this gets worse towards the end of the night,is this a speaker protect or amp going thermal on me,.i play dance music all night,so its thumping non stop.if i turn the bass down a touch would this cure the problem or wil it just do the same thing,?cheers
-
hi all,in desperate need off gigs as 2 a month is no good to me especially with a baby due in the next week or so(need all the money i can get),anything considered,dont mind travelling for upto an hour,i am in coventry,cheers all.
-
If you're on about limiting the signal to the amps then yes it would go between the mixer and crossover.
Cheers,
David
missed out the eq on previous post so,
mixer
eq
compressor
crossover
amps
is that the correct way,dave?
-
Or even better, a Drawmer 2120, but they come up far less regularly
hi,where does the compressor go in the chain,is it,,
mixer
compressor
crossover
amps
??????
-
Specific manual for the CS800X is here http://www.peavey.com/assets/literature/manuals/80301956.pdf
Page 10 for a description and page 11 for a diagram
excellent,where did u find this manual,couldnt find it anywhere unless i paid a fee.
-
hi all,im am gonna run this amp in bridge mode,for one night only,2 drive 2 yamaha 18 subs 400w each at 8ohms,connected together gives me a 4 ohm load,i understand this amp delivers 1200 in 4 ohm bridge,but where do i connect to on the back regarding terminals,do i connect to both the positives in the speaker connections,ie positve on left channel and positve on the right,or is this wrong?
-
The MDX1600 has features for hard & soft knee compression, de-esser, peak limiter etc..all the things you would want in a vocal mic channel in a recording studio or broadcast suite, but not for a mobile disco.
If you're just worried about guarding your speakers against overload, then a limiter would be more the thing, to add progressive gain reduction above a certain signal input threshold.
I would opt for something digital or semi-sealed because knobs are easily knocked during setting up and you wouldnt want to have to keep recalibrating a limiter at every gig or risk a false sense of security because you thought it was adjusted correctly when it wasnt! But that's up to you.
If you really want Behringer, go for the Ultradrive DCX2496 which has a very effective limiter. Thomann also do an own-branded one which is one of the generic chinese units also sold under the Ohm, DAP Audio, Ecler etc badge and is (like the Behringer) adjustable via laptop and free software.
cheers superstar,i will look into it
-
hi all again,ok after my tweeter blowing experience i am going to buy a compressor,although i dont no which behringer model 2 buy as they all do simular things,like have peak limiters on them,could anyone clarify i need this model?? behringer mdx 1600 autocom pro xl????
-
ok,2 new diaphrams ordered from a nice chap a stagebeat,got a great deal,£30 sheets,including vat and delivery.
-
The magnet won't be faulty!
Check the resistance of the coil with a multimeter, it should be around the 8 ohm mark, maybe a little less. Look at the coil, it should be intact and golden or light brown, if its dark brown or unevenly coloured then its kaput.
You can ring Peavey, they're pretty friendly so long as you keep the call reasonably professional!
Peavey replacement coils come with an instruction booklet to tell you how to replace it, there's a right way and a wrong way.
hi,i avent got a meter so i just tried it in the other cabinet and it didnt work,i put the good one in the magnet and it worked although even the one that worked smelt of burning a bit,looks like 2 new diaphrams.
-
hi all,
after my previous post it seems that these drivers were original peavey parts,so is there anyway i can check the diaphram to see if its working or blown as i dont want to buy a diaphram if its the magnet that has a problem,also anyone no the wattage of these drivers,have e mailed peavey but no reply.had my peavey amd back from service and theres no problem with that,but one thing he did say was that,the amp is a bit to powerful for the pro 15s.thanks
-
thats not a bad price reeely.
are these easy to put in the unit as i have never tried this before?
-
It sounds more like there is a problem with the mixer. Turning the gain (volume) down on the amplifier wouldn't change the output (LEDS) on the mixer. Could you have accidentally hit the master volume control on the mixer?
What do you use for media? - CD's or digital/laptop? It may just have been that particular track that had a much higher level than the others or if you were using a PC/Laptop, could the output volume have been increased?
you may have a point as i used a different mixer than what i usually use as its better quailty than my other numark,do you think the diaphram is easy to replace as this is what a presume is blown,can get a peavey diaphram for £13.99
-
Can we clarify what you said earlier:
were they previously full on or did they suddenly go like that without you touching anything?
The DDT is like a clip limiter and it would only cut in if there was a too strong a signal being input from the mixer. It has the effect of reducing the output (volume) from the amp so the speakers don't get overloaded but if you don't notice it has cut in, there is a tendency to increase the output from the mixer to try and compensate to make it louder. What that would do is make it worse, the DDT would cut the signal further and compress it. A continual heavily compressed output will cause an amplifier to cut out (thermal) and will damage speakers.
DDT is designed to provided protection against short term peaks such as feedback or someone shouting down a mic.
no the leds just went like it,no movement at all just full,thats when i looked at my rackpack and the ddts where stuck on aswell,i turned the volume down,and the mixer lights where still on full,no change even tho i decreased the volume by half,like i said earlier i done a party with a citronic amp,with the same power rating and it didnt clip once all night and the room was bigger.confused i am.
-
That would not have made the VU meters on your mixer go into the red.
The simple fact is that you were overdriving the amp.
Jim
hi jim,why wasnt the amp clipping when i done a sound check,and the 3 hours beforehand,or are you saying i need a more powerful amp for these speakers,i wouldnt have confidence in these speakers with a bigger amp,especially in the compression units,these cabs are 500w programme,i think a more powerful amp would blow them apart lol.i was also using a seperate eq,so the sound was well under control with the gains on the eq just over half,and all the sliders basicly on 0.
-
Protection systems shouldn't be relied upon as the be all and end all, sometimes they are effective, othertimes they are not. Just the same as an airbag in a car won't stop you from being turned into pulp if you get hit by an HGV.
In short, if the situation is extreme enough, no protection system is 100% effective.
My first question, why were the LED VU's on the mixer all lit solid into the red?. Was this user error from being too heavy handed with the faders and master levels or from a fault?. Did you try to reduce the output level before the tweeter went bang?.
You are just lucky I guess
Keeping the fans clean on an amplifier is important, as it aids cooling. Take away that cooling especially during warm summer nights and you risk problems with thermal issues on the amplifier. However, I suspect that this is not the issue here.
You said that the mixer output LED's were all red, so it would be unlikely to be amplifier related. Find out what was wrong at the mixer end of the sound chain and you have your answer.
Regardless of how well protected your sound system is (or you THINK it is), or the claims of this DDT protection system You shouldn't be driving any mixer into the red peak leds voluntarily. Problems can still occur even on the best protected system (as you have found to your expense!). Far easier to avoid any risk and keep the warning lights off, rather then flat out.
hi mate,the mixer was fine more or less all night,i would have thought that there was still plenty of power to push,i just literally searched for a cd,turned round and all hell broke loose,like a surge of power or sumin,i missed the tweeter blowin because i had headfones on and was in the mix,obviously when i took them off i heard it straight away and turned the volume down to halfway,but the amp was still going into overload on both sides,i think it has to be the cheapo compression drivers the previous owner put in them,obviously not up 2 the job.
-
hi all,ok where do i start.
done a brilliant gig saturday,first 3 hours the sound was excellent,no distortion etc,come 11pm,i looked at the mixer,the led lights where literally full on,not moving,turned and looked at 1 of the amps(peavey cs800x),the ddt warning lights where stuck on,then bang,1 tweeter as blown on 1 side,i turned the amp down so it was only half on,and the ddt lights where still on,the side with the tweeter blown shut down that side of the amp(it done it on its own),although this came back on it still shut itself down when i turned the volume up a litle.
can anyone tell me what went wrong,why the sudden peaking and blowing of the tweeter,why didnt the other tweeter blow,i thought peaveys ddt system stopped this from happening??
ok so last night i tooked the speaker apart to check the protection bulb,hmmm still intact,why didnt this blow?
then i looked at the compression driver lol,wasnt even a peavey part it was a replacement,was half the size and half the weight comparred to an original peavey tweeter.i bought the peavey pro 15s of e bay,obviously the previous owner thought it was funny to put a cheapo replacement in,i checked the other cab,the same cheapo driver in that 1 aswell.
also the compression driver is 8ohms,the woofer is 4ohm,doesnt this make an uneven load inside the cab??
i ave also put the amp in for service today as the tunnel the fan blows through on the amp is covered in dust,and i mean covered,would this also be a cause.i used a citronic amp with these same speakers 2 weeks ago,the same wattage and they where fine.
anyhow i am gonna replace the 2 compression tweeters,does anyone now what wattage the original peavey ones would have been as i dont want this to happen again? cheers,your thoughts on this appreciated. :wall:
-
tested it,all works fine with the way i mentioned,thanks for info tho everybody
-
rca and jacks
Speakon(bridge)
in Techie Talk
Posted
thanks,i looked at the manual,bit confusing so normal connection it is then,yeah the drivers are 8 ohms each 600w rms,gonna use these amps saturday,bargain,2 brand new for £100,lets hope they are up to the job lol