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Multi-Way Conventional loudspeakers with crossovers

3-way speaker to 8 ohm crossover to 2 ohm amp?
3-way speaker to 8 ohm crossover to 2 ohm amp?
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Old Yesterday, 01:58 AM   #1
Makonga is offline Makonga  Lithuania
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Lightbulb 3-way speaker to 8 ohm crossover to 2 ohm amp?

Good day, community.
At first place i would like to apologise if there is a similar thread, but search button doesn't work for me. After googling a whole day, im not quite sure if i understood ir right. I hope that anyone could help me.

I would like to make a 3-way speaker with all 3 drivers being 8 ohm individual.

I have not best but decent amp from my car setup. 2x150w rms@2 ohms or 2x75w rms@4 ohms.

If i would connect my desired drivers in parallel direct to amp it would require 2.66 ohms amplifier. In this scenario ohm ratio is tolerate.

If i connect all 3 drivers to 3-way crossover designed for 8 ohm drivers will it require 8 ohm amp output or 2 ohm amp is just fine?

8 ohm lows + 8 ohms mids + 8 ohms highs + 8 ohms XO = ???

P. S. I dont seek to burn my house or amp
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Old Yesterday, 02:19 AM   #2
rayma is offline rayma  United States
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When you use a passive crossover inside the speaker, the amplifier sees 8 ohms at the frequencies
in each driver's range, but much higher ohms outside that range. Then the three ranges combine
in parallel to provide 8 ohms in the entire speaker's range. So you'll have an 8 ohm speaker system.
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Old Yesterday, 02:19 AM   #3
AllenB is offline AllenB  Australia
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3-way speaker to 8 ohm crossover to 2 ohm amp?
It will give you 8 ohms. Each driver works by itself at different frequencies.
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Old Yesterday, 02:23 AM   #4
Makonga is offline Makonga  Lithuania
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Thank you guys for quick respond. Do you think if there is a way to make it to 2 ohms or is it just cheaper to get 8 ohms amp?
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Old Yesterday, 02:42 AM   #5
AllenB is offline AllenB  Australia
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3-way speaker to 8 ohm crossover to 2 ohm amp?
Not necessary. Your amp will be OK with it.
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Old Yesterday, 08:36 AM   #6
Makonga is offline Makonga  Lithuania
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I have ability to use 4 ohms drivers and XO so it would result in 4 ohms requirement from amp. Wouldnt it be better than 8 and 2 ohms scenario mentioned above?
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Old Yesterday, 09:49 AM   #7
AllenB is offline AllenB  Australia
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3-way speaker to 8 ohm crossover to 2 ohm amp?
Quote:
Originally Posted by Makonga View Post
2x75w rms@4 ohms.
With this, you can use 4 ohms or 8 ohms. Don't use 2 ohms for this configuration.

4 ohms will give you a little more power, but it is not much.. you almost won't notice the difference.
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Old Yesterday, 10:32 AM   #8
Makonga is offline Makonga  Lithuania
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Quote:
Originally Posted by rayma View Post
When you use a passive crossover inside the speaker, the amplifier sees 8 ohms at the frequencies
in each driver's range, but much higher ohms outside that range. Then the three ranges combine
in parallel to provide 8 ohms in the entire speaker's range. So you'll have an 8 ohm speaker system.
Thank you for answer! Just to make sure i understood it correct. If i would connect 2 x 8 ohms crossovers in parallel on one channel would it make a total of 4 ohms load?
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Old Yesterday, 11:26 AM   #9
picowallspeaker is offline picowallspeaker  Italy
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Crazy
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It's like learning sex during the Victorian era: you get to the wedding night and there are many things to do that you never imagined.
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Old Yesterday, 11:39 AM   #10
Makonga is offline Makonga  Lithuania
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Quote:
Originally Posted by picowallspeaker View Post
Crazy
i assume my question offended you. Could you explain it please so i could understand what is so wrong about my idea?
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