I want to drive a pair of speakers which have internal crossovers with an amp which has separate woofer/ mid and tweeter amps, as shown in the circuit. The existing speakers are fitted high up in a building, and have the standard pair of wires going to them. I can't get to them to separate inputs to the different speakers. Can I parallel the "Hi" and "Low" outputs on each channel?
What "outputs" from where?
Martaine2005
- May 12, 2015
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- May 12, 2015
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If they have the ‘standard’ two wires?.
If they are high up in a building, how do you know that they are not 100V line PA speakers?.
And, how do you know that they have internal crossovers if you can’t access them?.
Also, if you parallel the outputs, you’ll be sending high and low frequencies to the speakers. Not good for tweeters!.
If they are high up in a building, how do you know that they are not 100V line PA speakers?.
And, how do you know that they have internal crossovers if you can’t access them?.
Also, if you parallel the outputs, you’ll be sending high and low frequencies to the speakers. Not good for tweeters!.
They are standard 2 wire speakers with internal crossovers as I installed them many years ago. They are still working with a standard 2 channel output amp.
I am replacing the existing stereo amp ( 1 L & 1 R channel output) with an amp that has 4 outputs - 2 high/mid frequency (L&R) and 2 low frequency (L&R). I want to use the existing speakers and am not keen on running an extra 2 pairs of wires up there, and then I have to take the enclosures down and remove the crossovers. I would need to hire a scissor lift to get there !Still not clear exactly what you want to do, and why you want to do it.
No.
The power from one output will be shorted by the other output and you will blow the amps.
It might be possible to use a speaker crossover circuit in reverse to combine the two outputs, but that would be problematic and might still blow the amps,
Why are you trying to replace an amp that has the usual one output per channel with an unusual one that has two outputs per channel?
The new amp was donated to our organization to replace the dead one, I had bench tested it with the speakers supplied, and it worked well. I suspected that it might not be that easy to "combine" the outputs. Thanks for the info.
If it's a donated amp and you have nothing to lose, then you might try hacking it allow one channel to output the full frequency range, and use that to drive the speakers.
It would be half the power, but may still be sufficient for your purposes.
Do you have the full schematic that shows the circuitry where the frequency filtering occurs?
It would be half the power, but may still be sufficient for your purposes.
Do you have the full schematic that shows the circuitry where the frequency filtering occurs?
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I should have noted that half power is just -3dB in apparent sound loudness, which is generally just a barely noticeable change, so perhaps not as much is it would seem.
10dB or a 10 times change in audio power is the value that people usually perceive as a doubling or halving of the volume.
What is the make and model of the amp?
10dB or a 10 times change in audio power is the value that people usually perceive as a doubling or halving of the volume.
What is the make and model of the amp?
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