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樓主: elo

[喇叭] PureAudioProject Trio 10 Voxativ Open Baffle Speaker

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 樓主| 發表於 2017-9-8 13:04:59 | 顯示全部樓層
SAM is short form of Speaker Active Matching. Basically it deals with frequency under 150 Hz.

Details can see here : https://help.devialet.com/hc/en- ... M-?mobile_site=true
發表於 2017-9-8 14:09:51 | 顯示全部樓層
Thanks elo for the explanation.

Seems like SAM is basically using DSP to optimise your particular woofers and to the room-effects.
 樓主| 發表於 2017-9-8 14:19:02 | 顯示全部樓層
sgb 發表於 2017-9-8 14:09
Thanks elo for the explanation.

Seems like SAM is basically using DSP to optimise your pa ...

I would say SAM only deals with the woofer.  My room is not a factor for the optimization.  Of course, many Devialet users would like to have this function.  May be it will be available in coming firmware update.
 樓主| 發表於 2017-12-24 14:34:02 | 顯示全部樓層
本帖最後由 elo 於 2017-12-24 14:39 編輯

Have been using this speakers for half year.  Really satisfy its performance however it is about time to see how to enhance its performance further.  As the crossover is highly configurable, the best way is to replace better components on it.

1. China made Copper foil inductors to replace Mundorf air coil inductors.
2. Duelund CAST resistors to replace Mundorf precision resistors.
WhatsApp Image 2017-12-23 at 22.27.40.jpeg
WhatsApp Image 2017-12-10 at 18.25.19.jpeg
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發表於 2017-12-24 15:00:38 | 顯示全部樓層
 樓主| 發表於 2017-12-25 22:43:45 | 顯示全部樓層
Forgot to tell the difference after changing the components :

1. Copper foil inductor

Bass becomes more tight and can reach a lit deeper but the most obvious improvement is it can reveal more information buried inside the bass that I cannot hear before when using the old air coil inductor.

2. Duelund CAST resistor

Sound more pure and transparent without altering the original sound signature of the speaker.

A worthy and high C/P ratio investment.
發表於 2020-7-27 11:39:57 | 顯示全部樓層
Hi Elo Hing,

I am interested in open baffle speakers, too.

Did you try the Nelson's active crossover?
Should it be more effective in improvement than just upgrading the caps and resistors of passive crossover?
And, did you ever listen to the horn/emt tweeter options? Some said the horn though cheaper, being more refined.

Thanks
 樓主| 發表於 2020-7-27 15:52:38 | 顯示全部樓層
R33-Ng 發表於 2020-7-27 11:39
Hi Elo Hing,

I am interested in open baffle speakers, too.

Hello

No, I did not try the active crossover so I cannot tell how effective it is if compare to Cap and Resistor upgrades.
Neither did I listen to its horn version though I  listened to the EMT version during a Audio show.  You can say different option has different presentation.
發表於 2020-7-27 16:03:52 | 顯示全部樓層
Hi Elo Hing, Thanks for your reply.
發表於 2020-7-28 03:44:13 | 顯示全部樓層
R33-Ng 發表於 2020-7-27 11:39
Hi Elo Hing,

I am interested in open baffle speakers, too.

Get the Spatial Audio instead.
 樓主| 發表於 2020-7-30 21:36:00 | 顯示全部樓層
dekiller 發表於 2020-7-28 03:44
Get the Spatial Audio instead.


Diesis will be another option but the price...

https://www.diesisaudio.com/en/
發表於 2020-7-31 13:24:57 | 顯示全部樓層
Interesting to read this thread as I’m contemplating a DIY OB project also.
Have bought all necessary drivers for the 3-way project; ESS AMT1 for high, Supravox 6.5” full range for mid & Acoustics Elegance 15” for low. Will drive it actively with a digital x-over, now looking for someone to build the baffles.
 樓主| 發表於 2020-8-1 13:16:13 | 顯示全部樓層
本帖最後由 elo 於 2020-8-1 13:20 編輯
嚦嚦 發表於 2020-7-31 13:24
Interesting to read this thread as I’m contemplating a DIY OB project also.
Have bought all necessa ...


Your OB projects sounds very interesting.  For the digital X-over, which one will you use ? MiniDSP?

發表於 2020-8-1 15:19:33 | 顯示全部樓層
will probably go for a digital x-over, such as XTA 426, so that x-over frequencies & slopes, equalisation & time-delay in each frequency band can be adjusted by test equipment & listening.
I don’t have the know how to design/build a good passive x-over, so a digital x-over with infinite parameter adjustments makes more sense.
發表於 2020-8-2 18:49:26 | 顯示全部樓層
本帖最後由 dekiller 於 2020-8-2 18:58 編輯
嚦嚦 發表於 2020-7-31 13:24
Interesting to read this thread as I’m contemplating a DIY OB project also.
Have bought all necessa ...


Go to Taobao. Besides, look into MiniDSP products with Dirac live may help. Will you use dual AE15? Mid-range seems not a good idea for drivers you chose.
發表於 2020-8-2 21:50:46 | 顯示全部樓層
Will start with single AE15 initially because my room is small, may add another pair if bass insufficient. I want to cover most of the vocal & fundamental note of musical instruments range (i.e. 120 - 5000 Hz) with 1 driver, hence the Supravox full range.
Building a DIY OB is about learning as much as enjoying the end result, so I’m quite prepared for mistakes, inexpensive ones anyway.
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