1. Characteristics of baffle
1. The playback sound without sound dyeing, the true color of the faithful unit;
3. Space does not need to be processed and standing waves will not be generated;
4. The listening position that is not restricted by the emperor's position, even if it is off-axis by 30 degrees, the knot image is in the center
However, the baffle also has its obvious defects:
1. Steep, -18dB; closed box, followed by low-frequency resonance frequency, the rate of decline is -12dB;
Open baffle, the low frequency resonance frequency is the earliest, the rate of decline is -6~-10dB, the reason for the indefinite value is because the size and area of the baffle are different
2. In the middle and low frequency bands, due to the effect of the baffle, there will be a peak of about 3~6dB, depending on the size of the baffle, it will appear in the frequency band of 200~400hz;
3. In the middle and high frequency bands, due to the effect of the baffle, a sag valley will also appear.
Technical parameters - DL28h (dual 18 inch bass)
Appearance size: 1730 (height) *600 (width) *530 (depth) mm
Frequency range: 28 (-3dB) ~ 40Khz
Sensitivity: 88dB
Technical parameters - DL25h (dual 15 inch bass)
Appearance size: 1530 (height) *560 (width) *600 (depth) mm
Frequency range: 35 (-3dB) ~ 40Khz
Sensitivity: 88dB
Frequency response (SPL) curve
Unit configuration: double 18 (15) inch bass + double 8 inch mid-bass + Haier pneumatic tweeter + aluminum band super tweeter
Haier pneumatic tweeter+super tweeter+2*6 inch medium and low+2*15(18) inch bass
Haier pneumatic tweeter+super tweeter+2*8 inch medium and low+2*15(18) inch bass
Units and accessories
Other prototype pictures
