Edifier R1280T Powered Speaker Review

[Audiomaniac3]

I introduce to you!!! First (almost) wireless Edifier R1280T speakers!!!

With integrated Bluetooth,Airplay,audio over Wi-Fi for lossless music and active FIR crossover:

More information here:

Wondom Jab5 4 Channel Double Tda7498E DSP Integrated Amplifier Bi-amp Aptx-HD Fir Crossover

Hello everyone,in this video: I got a four-channel amplifier from Wondom for review on two TDA7498E microcircuits and with a built-in adau1701 dsp module with a maximum sampling frequency of 48000khz 24bit. The amplifier has many options for connecting and transmitting a signal to it.The...

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[Audiomaniac3]

Modded edifier r1280t,now they are portable with adjusted frequency response:

 

[AnalogSteph]

Neat project. Some things I noticed that could be filed under "fine tuning":

1. With your crossover being that steep and limited level handling in the woofer, odds are you'll be able to reduce the XO frequency. I'd try somehing around 2.5 kHz maybe.
2. You should be flattening out the driver responses in magnitude and phase throughout the crossover region and match up their time delays before applying the crossover proper.
3. The low end seemed a bit thin to me in the video and may need some extra help (depending on how much battery life you are willing to sacrifice). You may need to read up on how to take either
a) nearfield measurements of woofer and port, plus compensation for baffle size (this article seems quite good)
or
b) groundplane measurements outdoors
which are about the only sensible way of getting accurate bass response measurements. I mean, you can try placing the speaker on a high ladder somewhere out in the open, but...