Paging amp and speakers
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Posted by John on February 3, 2006, 7:22 pm
Please log in for more thread options I am wondering about speakers connected to a paging amp. How do I go about figuring out how many speakers can be connected to a paging amp? Basic math and common sense tells me that a 35 watt amp will be able to drive 5 seven watt speakers. Is this correct? Is this one of those circumstances where they say the Amp is 35 watts, but really it is only 20 watts. Then again, I know that sometimes the speakers wattage is measured in RMS or something and what seems like a maximum of 5 speakers is really 10. So, how do I figure out how many speakers I can connect to my Bogen TPU35B? Thanks in advance, John | |||||||||||||
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Posted by GHTROUT on February 3, 2006, 8:05 pm
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John wrote: speakers very far away - 1000+ feet. Also so you can feed many - maybe 60 to 80 or more if you were just playing quiet soothing background music without paging. In a warehouse, you might feed 10 to 15 horns that would be loud enough for paging The speakers must have a "70volt transformer" - 70v amp would fry the speaker or at least load the thing down real far. That transformer will have 3 to 5 "taps" or wires, each one being louder and a greater load. The taps will be identified as "quarter watt, half watt, up to 2 watts probably. Those WATT numbers cannot exceed 35 when added. Of course, there is a normal speaker output - 16 ohms is what I see on the spec I found online. In that case, I think you just wire in series parallel as to not end up lower than 8 ohms (my guess the amp is quite durable) and if you can hear, that's good. Go 70 volts...that is the standard. | |||||||||||||
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Posted by Carl Navarro on February 4, 2006, 1:56 am
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>Howdy,
Yes and no. You don't want to be the one closest to a trumpet tapped
> >I am wondering about speakers connected to a paging amp. How do I go about >figuring out how many speakers can be connected to a paging amp? Basic math >and common sense tells me that a 35 watt amp will be able to drive 5 seven >watt speakers. >Is this correct? at 7 watts. In general practice, 3-5 amps feeds a trumpet and 1-2 amps feed ceiling speakers very well. >Is this one of those circumstances where they say the Amp is 35 watts, but
>really it is only 20 watts. >Then again, I know that sometimes the speakers wattage is measured in RMS or >something and what seems like a maximum of 5 speakers is really 10. > >So, how do I figure out how many speakers I can connect to my Bogen TPU35B? Three methods, Math, trial and error, and an Impedance bridge or a combination of the 3. I hear the new impedance bridges are digital and pretty slick and TPU 60's aren't very expensive either. . Carl Navarro | |||||||||||||
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Posted by John on February 4, 2006, 5:53 pm
Please log in for more thread options That tells me what I needed to know. I found out that the speck I was
looking at for the speaker was adding all of the possible taps on the speaker tranformer to arrive at the 7 watts they were reporting. I would not have figured that out if you hadn't pointed me in the right direction. Thanks for the information. I don't know what I'd do without you guys helping me out. John > Howdy,
> > I am wondering about speakers connected to a paging amp. How do I go > about figuring out how many speakers can be connected to a paging amp? > Basic math and common sense tells me that a 35 watt amp will be able to > drive 5 seven watt speakers. > Is this correct? > Is this one of those circumstances where they say the Amp is 35 watts, but > really it is only 20 watts. > Then again, I know that sometimes the speakers wattage is measured in RMS > or something and what seems like a maximum of 5 speakers is really 10. > > So, how do I figure out how many speakers I can connect to my Bogen > TPU35B? > > Thanks in advance, > > John > | |||||||||||||
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>
> I am wondering about speakers connected to a paging amp. How do I go about
> figuring out how many speakers can be connected to a paging amp? Basic math
> and common sense tells me that a 35 watt amp will be able to drive 5 seven
> watt speakers.
> Is this correct?
> Is this one of those circumstances where they say the Amp is 35 watts, but
> really it is only 20 watts.
> Then again, I know that sometimes the speakers wattage is measured in RMS or
> something and what seems like a maximum of 5 speakers is really 10.
>
> So, how do I figure out how many speakers I can connect to my Bogen TPU35B?
>