本帖最後由 kk_ho 於 2010-7-6 00:55 編輯
Specification:
400W/channel UCD Class D, can be use for AV amp or tube preamp, or AD1955 KII (Variable digital volume control, no need preamp)
430mm W x 70mm H x 300mm D (Ultra slim chassics)
Over 20KG.
Construction:
Pre-drilling hole for DIY beginner, you only need to drill 4 holes for UCD PCB. (We found the UCD PCB with heatsink have some tolerance, which will affect the PCB mounting holes.
Left and Right heat sink mount at chassics for thermal consideration.
2 x 300W R-CORE (42V x 2 + 12V x 2) 42V for UCD power stage, 12V for Opamp stage in UCD.
Can install total 4 UCD 400 in one chassics. OR
Intall 2 UCD 400 + 1 TI (300W + 300W) Class D.
UCD400 amplifier:
Pre modify all of the capacitor to ELNA SILMIC II Super Audio grade capacitor. (Modify work done by KK and labour charge into the fee).
NS LM4562 op-amp onboard, no need to modify.
Power Supply Stage:
2 x 300W R-CORE for 2 channel. (Yamaha DSP-Z11 give you a 500VA EI transformer for support 13 channel amplifier + DSP board).
15,000uF x 8 ELNA Audio capacitor.
DC detection pin to aviod DC output in your speaker, once detect the DC over 3V, the power supply will shutdown to prevent damage to your speaker, traditional speaker protector is the speaker output pass through the RELAY, the magnetic field will affect the audio quality. We use sampling method to detect the DC happen in Speaker terminal.
Power off turn mute to UCD,
Additional Jensen 4 pole power supply board (with above feature) also available.
Soft start
Hypex soft start module to protect the inrush current.
Provide 2 kind of power on sequence : Hard switch or Tach switch.
Front Mains power switch, easy to let user switch off the machine for no longer use. A soft switch will install at the center of the panel.
Target DIYer:
1. Can support just plug and play, Diyer only assemble the board to chassics and connect the wire, Drilling 4 hole only (assume 2 x UCD)
2. Can support semi Diyer, Diyer only assemble the power supply board (SMD components pre soldering.)
3. Full complete unit (Ask).
Course : (Same price)
Target 1 --> 4 people (2 days)
Target 2 --> 2 people (2 days)
Target 3 --> 4 people (0 days, pre-order 2 week in advance)
Sound quality
We will prepare a AB KO comparision soon.
UCD400 Full mod PK UCD400 un-mod
UCD400 Dull mod PK Yamaha DSP-Z11
UCD 400 un-mod PK Yamaha DSP-Z11
If you have AVP-A1HD, AVC-A1HD, POA-A1HD, please let me know.
If you have NuFORCE, ICEPOWER, please let me know.
Also will PK them.
No need to ask Onkyo 5XXX series, Marantz MM8XXX series, waste my time.
KK. |