Here are the measurements of the raw driver :http://www.tymphany.com/files/P830668 Spec sheet Rev 2_0.pdf
There are some small wrincles.
There are some small wrincles.
Crossover frequencies came out at 1.39 kHz and 4.81 kHz.
Voltage sensitivity is good at 92dB, 2.85V, 1m but it is also around 3 Ohm.
Voltage sensitivity is good at 92dB, 2.85V, 1m but it is also around 3 Ohm.
The woofer is 8 Ohm and has less voltage sensitivity. A passive crossover is possible with an autoformer or resistors before the midrange treble.
I decided on a simple active system though. The midrange treble gets a 6dB inline filter ( cap before the amp ) and the woofer gets an active crossover.
I decided on a simple active system though. The midrange treble gets a 6dB inline filter ( cap before the amp ) and the woofer gets an active crossover.
The speaker is playing. The most suprising thing is that they focus extremely well. I even hear sounds over my head and deep in the soundstage as if they speakers where not there.
I always wanted to test what damping material does to a closed box woofer.
Soon i will build a closed box and will try out different damping materials, glasfiber, rockwoool, acoustic foam, polyester, sheeps wool and sheeps wool and polyester mix.
At least that is what i have in stock.
Soon i will build a closed box and will try out different damping materials, glasfiber, rockwoool, acoustic foam, polyester, sheeps wool and sheeps wool and polyester mix.
At least that is what i have in stock.
I would have driven the mid lower , into the 500 hz region, 500-5k, I find the woofer rolls out way too early , it will affect tonal balance, 3 db down at 100hz is tolerable ...
just to be sure to understand.
theres no high pass on the mids also. the active devise put a highpass for the mids and low pass for the woofer?
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Maybe here is a misunderstanding.
Post 103 shows the midrange, the lower tweeter and the higher tweeter.
It does not show the bass.
The bass has the S-1 crossover and a separate amp.
The mid-treble ( post 103 ) goes over another amp.
That has an input impedance of ca. 15kOhm. That amp has a 22nF cap in series.
The system results in a crossover of ca. 300Hz.
The in room response looks rather flat. It does not suffer from the Allison effect because the bass is near the floor and the crossover to the mids optimally chosen.
Post 103 shows the midrange, the lower tweeter and the higher tweeter.
It does not show the bass.
The bass has the S-1 crossover and a separate amp.
The mid-treble ( post 103 ) goes over another amp.
That has an input impedance of ca. 15kOhm. That amp has a 22nF cap in series.
The system results in a crossover of ca. 300Hz.
The in room response looks rather flat. It does not suffer from the Allison effect because the bass is near the floor and the crossover to the mids optimally chosen.
Hopefully you'll add recycled denim to the test. This conversation, damping that is, will benefit from your approach. Thanks
Would it be possible to build a band-pass box for the woofer rolling off to meet the midrange drivers with no x-over needed? Probably an uniformed question. Just thinking out loud really.
Thanks, Wayne
Thanks, Wayne
Thanks for the response. I thought if it was that simple and effective you would probably already be doing it.
I'm enjoying the build! wayne
I'm enjoying the build! wayne
I have build this speaker for Frickelfest 2014. That is next week. Today i have painted the speaker with grey structure laquer. I will send pictures from Frickelfest and also post the circuit diagram as soon as my friends have aproved the sound.
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