I am slowly getting into the whole security thing, and I think I've understood many things, but I am still confused about the items in the topic. This is all in the context of an M1G.
I think I understand that:
- A speaker is just a regular speaker with a fixed impedance and a max power.
- A siren is a speaker with an integrated siren driver. The input voltage is constant, and the max current depends on the speaker and the driver (I guess). For instance, the ELK-45 siren seems to be just a ELK-44 speaker with an integrated ELK-100 siren driver (true?).
Now I am confused about:
- What's a bell (from the M1G install manual for OUT2)?
- What is the OUT2 current when driving a x Ohm speaker (that's useful for total power)? Is there any risk of overpowering the Elk if the total impedance on OUT2 is >= 4 ohms?
- Is the sound/volume of OUT2 driving, say a ELK-44 speaker (in speaker mode), the same as a ELK-45 siren (in voltage mode)? Is the sound in the face of burg vs. fire patterns the same?
- Is OUT2 in speaker mode supervised?
- Why is OUT2 driving a speaker not UL, while OUT2 driving a siren is?
- Do I care about UL compliance for my personal home install?
- If I do, according to the M1 manual, I can't use OUT1. Why?
In addition, I'd like to know what people do here as far as using a speaker vs. siren on OUT2.
And optionally how common it is to have a backup siren. I am thinking of putting my main siren (1RT or 150RT) on OUT2 and visible from the street and a backup indoor concealed siren (say a 71 or 74) probably from OUT3.
Thanks in advance.
Laurent
I think I understand that:
- A speaker is just a regular speaker with a fixed impedance and a max power.
- A siren is a speaker with an integrated siren driver. The input voltage is constant, and the max current depends on the speaker and the driver (I guess). For instance, the ELK-45 siren seems to be just a ELK-44 speaker with an integrated ELK-100 siren driver (true?).
Now I am confused about:
- What's a bell (from the M1G install manual for OUT2)?
- What is the OUT2 current when driving a x Ohm speaker (that's useful for total power)? Is there any risk of overpowering the Elk if the total impedance on OUT2 is >= 4 ohms?
- Is the sound/volume of OUT2 driving, say a ELK-44 speaker (in speaker mode), the same as a ELK-45 siren (in voltage mode)? Is the sound in the face of burg vs. fire patterns the same?
- Is OUT2 in speaker mode supervised?
- Why is OUT2 driving a speaker not UL, while OUT2 driving a siren is?
- Do I care about UL compliance for my personal home install?
- If I do, according to the M1 manual, I can't use OUT1. Why?
In addition, I'd like to know what people do here as far as using a speaker vs. siren on OUT2.
And optionally how common it is to have a backup siren. I am thinking of putting my main siren (1RT or 150RT) on OUT2 and visible from the street and a backup indoor concealed siren (say a 71 or 74) probably from OUT3.
Thanks in advance.
Laurent