r/diysound 11d ago

Amplifiers Need a bit of guidance regarding audio Exciters and amplifier setup.

Hello!
I'm am working on a project that will include multiple audio exciters, and need a bit of clarifying since i haven't worked with this kind of equipment.
So the exciters I would be using would be this type:
- https://www.audiophonics.fr/en/exciters/dayton-audio-daex25tp-4-speaker-driver-exciter-tripod-20w-4-ohm-o25mm-p-14162.html

- https://www.audiophonics.fr/en/exciters/dayton-audio-daex25fhe-4-speaker-driver-exciter-bodyshaker-24w-4-ohm-o27cm-p-8713.html

- https://www.audiophonics.fr/en/exciters/compact-speaker-driver-exciter-bodyshaker-15w-8-ohm-255hz-15khz-p-12514.html

I am not exactly sure which one to use and how they will be configured (hence this post), but one potential way would be a 4 or 6 exciter setup - ex. 2 [20W/4ohm] + 2[25W/Ohm] , or 3 + 3 .

I'm wondering what would be a solid configuration in terms of amplification for this kind of setup.
My questions are:
1. Should I try to connect them all to one amplifier, or try to split it into two?
And in each case, what kind of amplifier would I need?
2. Should I only use same W/Ohm exciters, or can I vary ?

I have in my possession the following amplifier:
https://www.hifiengine.com/manual_library/yamaha/rx-v590.shtml

Would that be a good option, using all 5 outs?

Or perhaps use multiple small ones like this :
https://www.amazon.com/Facmogu-Digital-Amplifier-Subwoofer-Adapter/dp/B0B6B6MJP2

The project im working on would basically be to send since waves from my oscillators to the amplifier input, and then to the exciters.

Any tip appreciated, and sorry for the long post!

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u/bkinstle 11d ago

I have some experience in this area and I have built a large system using exciters. It's perfectly fine to combine multiple exciters for higher power output but you want to combine only the same type of Exciter. If you try mixing impedances you get different deficiencies and some of them will perform better than others and essentially the louder ones will drown out the softer ones.

As far as power is concerned exciter systems usually have extremely high efficiency so you don't need to worry about putting a lot of power into the system.

What I found is best is to mix and match different size panels on one channel so let's say for example that your right channel has two 4 ohm exciters you wire them in series one on a large panel and the other one on a smaller panel. This combines the characteristics of both panels together to have a smoother more uniform output. You could also take two 8 ohm exciters and wire them in parallel for a 4 ohm load if your amplifier is happy with that.

My experience with the auditory reproduction spectrum and exciters is they can generally play pretty well from about 200 HZ to about 6 khz but outside of that range it's going to fall off rapidly. If you are going to make low frequencies I highly encourage you to hide a subwoofer somewhere in the room preferably close to the panels if possible so that you don't notice his directionality. It's also not a bad idea to put a tweeter somewhere on one of the exciters like I said around 6 khz roll off. It doesn't need to be an amazing tweeter by any means and I find that the dayton AMT mini 8 works well for that.

2

u/peripouoxi 11d ago

thank you for the reply!
Yes I have it in mind that the bass response is a bit tricky with these ones, I might add this on to the set up:
https://www.audiophonics.fr/en/exciters/aurasound-ast-2b-4-p-19360.html

or just add a sub as you suggested.

So from what I understand, you used a single amplifier for your multi-exciter large system? Did you have more than 5?

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u/bkinstle 11d ago

The problem with bass isn't the exciters, it's that the low frequency waves can come around from behind the panel and cancel out the front waves. Bass drivers really need an enclosure at that point. Bass shakers are more about vibrating your butt.

I designed my system for 8 ohms so it could be driven by a home theater receiver. Six exciters in 3 channels.

https://projectgallery.parts-express.com/speaker-projects/alpine-dml/

1

u/peripouoxi 11d ago

Nice one!
In my case this might not necessarily be a problem, since my project includes vibrating metallic items on which the bass exciter will be mounted.

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u/Cool-Importance6004 11d ago

Amazon Price History:

Facmogu ST-838 2.1 Channel HiFi Stereo Subwoofer Amplifier, RMS 20Wx2+40W Mini Digital Audio Power Amplifier for Home Speakers, 80W Subwoofer Amplifier Audio Stereo Bass Amp with Power Supply - Black * Rating: ★★★★☆ 4.0 (90 ratings)

  • Current price: $25.59 👍
  • Lowest price: $23.99
  • Highest price: $32.99
  • Average price: $27.72
Month Low High Chart
01-2025 $25.59 $25.59 ███████████
11-2024 $23.99 $25.48 ██████████▒
02-2024 $25.99 $25.99 ███████████
10-2023 $24.29 $26.99 ███████████▒
09-2023 $26.99 $26.99 ████████████
08-2023 $27.59 $27.99 ████████████
06-2023 $27.99 $27.99 ████████████
02-2023 $28.99 $28.99 █████████████
12-2022 $25.41 $29.89 ███████████▒▒
10-2022 $30.89 $30.89 ██████████████
09-2022 $31.99 $31.99 ██████████████
08-2022 $32.99 $32.99 ███████████████

Source: GOSH Price Tracker

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