Product features:
1. DA power amplifier is to use the peak CREST AUDIO power amplifier circuit technology;
2. DA power amplifier is H class amplifier circuit; 400 w, 600 w with class AB circuits
3. The power tube radiator design heat dissipation is good, normal work continuously for 24 hours with a trumpet does not exceed 70 degrees;
4. The former stage amplifier circuit USES high-grade double op-amp IC IC OPA2604 AP BB companies in the United States; Sound quality is very good;
5. Each channel with two fan cooling;
Main material:
1. The power tube manufacturing MJL4302 / MJL4281 or power tube Toshiba sa1943/2 sc5200;
2. Field effect work IR brand n20 38; Push pipe manufacturing MJE15034 / MJE15035
3. The first stage amplifier circuit USES high-grade double op-amp IC IC OPA2604AP BB companies in the United States
4. The pure copper wire ring transformer,
5. Use Japan original ELNA large capacitor filter; ELNA for capacitance coupling;
| DA series products technical parameters |
| models | DA400 | DA600 | DA800 | DA1100 | DA1300 |
| Rated power(1KHz,THD+N=0.1%) | 8ohm stereo | 2×400W | 2×600W | 2×800W | 2×1100W | 2×1300W |
| 4ohm stereo | 2×600W | 2×900W | 2×1200W | 2×1650W | 2×1950W |
| 2ohm stereo | 2×800W | 2×1200W | 2×1600W | 2×2200W | 2×2600W |
| 8ohm bridge | 1200W | 1800W | 2400W | 3300W | 3600W |
| 4ohm bridge | 1600W | 2400W | 3200W | 4400W | 5200W |
| Frequency response | BYASS | 20Hz-20kHz(±0.3dB) |
| LOW PASS | 20Hz-150Hz |
| Hi PASS | 50Hz-20kHz |
| Signal to noise ratio | 20Hz-20kHz | >=98dB |
| Harmonic distortion | 20Hz-20kHz.Half Power | <=0.1% |
| Conversion rate | Rated Power into 8ohm | 50V/µs |
| Damping coefficient | 8ohm,1f=1kHz | 400:1 | 500:1 | 600:1 | 700:1 | 800:1 |
| The input sensitivity | Rated Power into 8ohm | 0.775V / 1.0V / 1.4V |
| Degree of separation | Rated Power into 8ohm | >=62db |
| The input impedance | balanced/unbalanced | 10K ohm/ Unbalanced,20K ohm/ Balanced |
| Amplifying circuit type |
| Class AB | H class | H class | H class | H class |
| Protection function | Have perfect protection function | 1.have a boot soft start protection, prevent the impact on the horn. |
| 2.have input overload protection, prevent signal input is too big, |
| with functions of automatic clipping. |
| 3.have over-current protection, as a result of special circumstances, |
| the loop current is too large, automatic protection. |
| 4.have output short circuit protection, if the output short circuit, |
| with automatic protection |
| 5.have power transformer overheating protection, has the power |
| tube overheating protection. |
| Power triode | The original Japanese Toshiba brand | 2SA1943/2SC5200 |
|
| The power supply |
| 220V/50Hz |
| The outer packing size | cm | 60*60*16cm | 60*60*16cm | 60*60*16cm | 65*60*20cm | 65*60*20cm |
| The weight of the | KG | 23 | 26 | 30 | 35 | 36 |
Chinese Guangdong Macao Zhongshan Laidi sound factory was established in October 2000, now renamed the Zhongshan Shenghua acoustic factory. The company is committed to R & D, production, sales and service as one of the professional stage sound business, with a profound cultural heritage and strong technology development strength. The company not only focus on the production and sales of its own brand, but also to undertake domestic and foreign OEM/ODM business.
"Macao Laidi" audio brand in accordance with the technical standards of the design, the product is safe and reliable, stable performance, real power, exquisite craft, good sound, advantages in the fierce competition in the market come to the fore.
For many years, the company in the "people-oriented, quality first, scientific management, technological innovation" business philosophy, adhere to the "unity and harmony, dedicated and pragmatic, professional focus, continuous innovation" spirit of enterprise management system through ISO9001-2000 international quality management system certification, products through CCC certification, CE certification, UL certification, VDE certification, SGS certification. Now has 2000 square meters of modern standard workshop, advanced production equipment, professional team of 100 people, has developed into a certain size of the enterprise, is a model for the field of professional stage acoustics.
Quality policy: "the scale of development, build brand, standard management, full
Business philosophy: "people-oriented, quality first, scientific management, with the time with"
Enterprise spirit: "dedicated and pragmatic, professional focus, continuous innovation, return to society"
