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2x MT122 + CW218 |
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Rune RC 
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Joined: 20 September 2022 Location: Denmark Status: Offline Points: 34 |
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 Posted: 26 September 2022 at 3:03pm |
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I see. My initial thought was to go full passive if possible, but wasn't sure if it could be done.
I am guessing that a SKRAM wouldn't work well with a passive crossover then? I will figure out if I can find the specs for my driver's and ask for guidance later on then. Edited by Rune RC - 26 September 2022 at 3:04pm |
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Earplug
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Joined: 03 January 2012 Location: Europe Status: Offline Points: 7072 |
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Posted: 26 September 2022 at 3:45pm |
Passive in the bass-end is a real waste of power - and a filter can be more expensive than a cheapo 2-way electronic device. The coil you will need has to be large and thus expensive. Even something like these would be better:- |
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Earplugs Are For Wimps!
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Rune RC
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Posted: 26 September 2022 at 3:52pm |
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I thought so. That is also what I have read in other forums.
So basically I will need to figure out how the crossover should be configured for the tops. Buy two amp's that is suitable for there different purposes Buy a DSP or active crossover to split the sub and tops. I guess I will need a mixer after the amps to connect the two channels? |
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DMorison
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Posted: 26 September 2022 at 4:02pm |
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Yes to you using 2 amps etc, but no to the mixer after the amp.
Each amp will typically be a stereo device i.e. it will already have one channel for each of the Left & Right parts of the signal, and the crossover/DSP will be too.
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Rune RC
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Posted: 26 September 2022 at 4:20pm |
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I see. It is just me not getting how it is connected 😅
I understand it like you do two separate line of amps. One for top and one for the sub. That might not be the case, but if it is, how are you connecting let's say a phone for playing music from?
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smitske96
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Posted: 26 September 2022 at 5:26pm |
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You go from: Source (phone, cd, laptop etc) --> mixer --> DSP/Crossover --> amps --> speakers.
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Rune RC
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Posted: 26 September 2022 at 6:10pm |
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I see. Thank you for clarifying.
Would both amps go into the crossover or only the sub since the tops will have a passive crossover?
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smitske96
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Posted: 26 September 2022 at 6:24pm |
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Both, your top has a crossover (if you but for instance a pair Sx300) between the LF driver and HF driver. You still need to split up the signal between sub and top.
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Rune RC
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Posted: 26 September 2022 at 6:39pm |
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Of course. Thanks.
Is there a way to calculate what size of amps you should use or rules of thumb?
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smitske96
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Posted: 26 September 2022 at 6:47pm |
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That depends on your setup (drivers, cabinet etc).
Most used rule of thumb is 2x AES rating. You still need a very healthy portion of common sense when running the system.
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Rune RC
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Posted: 26 September 2022 at 7:04pm |
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Great thank you.
I will probably go a bit conservative.
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toastyghost
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Posted: 26 September 2022 at 10:20pm |
Yes. https://www.prosoundweb.com/understanding-required-amplifier-size-for-loudspeakers/ http://www.synaudcon.com/site/wp-content/uploads/2014/01/L1107_Amped_Up.pdf https://youtu.be/WcVdl-WZWeA https://www.prosoundtraining.com/2016/07/19/power-amplifier-calculator/ |
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Rune RC wrote: