Tentlabs Cd/DVD Upgrades

TentLabs XO-2 and XO-3                                                       Page 1/Page 2/Page 3


XO2 and XO3 are low jitter clock upgrades for CD/DVD players. Substituting the standard clock with a new clock oscillator, designed with low jitter in mind, will greatly enhance the sound quality of your digital disc players. This new clock oscillator is now made available at a very reasonable price. Just connect power supply and change a few components inside the player yourself - the fast and easy solution!

Purpose
XO2 and XO3 are designed to be applied as an upgrade in CD and DVD players. They generate a very low jitter clock, which in turn clocks the DAC chips. This in turn leads to lower distortion in the audio spectrum. It pays off and results in:
• Lower grain
• More resolution
• Better transparency
• Cleaner sound
• Better bass

Most commercially available CD players contain standard clock generator circuits, producing typical jitter values up to, and over 100 ps. XO 2/3 output jitter is below 3ps, integrated over the whole bandwidth starting from 10Hz. Now guess how that distortion is reduced….

Read page 2 of our September newsletter to understand which specifications are important when quantifying jitter.

Technology
XO 2/3 module are based upon the XO clock module. The module is fed with a dedicated low noise power supply. The output noise is below 5 nV/Sqrt. Hz (within the critical range of 20 Hz to 100 kHz). That is 30 times more quiet than an average LM317 based voltage regulator! This low noise level contributes to the already low jitter figures of XO.
All active stages have their own decoupling capacitor, and a novel compound RF series impedance towards the supply rail. XO2 and XO3 sit on a double-sided PCB with ground-plane, to ensure signal integrity and maintain low jitter levels.

Application
XO2/3 are small modules, intended to be retrofitted in your CD player or soundcard. They offer a plug and play solution to come to a sound reproduction with less distortion. Modern players usually require the 3,3V version, older units work fine with 5V versions.

XO2
XO2 is intended for stand-alone CD and DVD players. It contains an XO module of the appropriate frequency, in conjunction with the low noise power supply.

XO3
XO3 is intended to be used when external DACs are connected. XO3 is equal to XO2, but contains an additional reclocking circuit for the digital output (SPDIF). This circuit reduces the jitter at that output. The incoming jitter at the DAC will be lower, resulting in better sound. XO3 can be used in conjunction with XO-DAC.

Specifications
Electrical
• Supply input: 10 to 25 Vdc, 20mA typical
• Clock output: Specified frequency, +/- 50ppm
• Clock outputvoltage : 3.3V or 5V (Specify when ordering)
• Output jitter: < 3ps rms (10 Hz onwards)
• Clock outputs: 3, each can drive an HCmos gate
• Optional output /5: Specified frequency divide by 2 (enables direct clocking of TDA1541 or TDA1547)


Mechanical
• Size: 50*90*20 mm^3
• Weight: 40 gram
• Mounting: M3 stand-offs (not included)
• Mountinghole pitch: 39,5 x 79,3mm

Available frequencies
Available from stock are:
• 2.8224 MHz
• 8.4672 MHz
• 11.2896 MHz
• 12.2880 MHz
• 16.9344 MHz
• 18.4320 MHz
• 24.5760 MHz
• 27.0000 MHz
• 33.8688 MHz
• 45.1584 MHz

Look at the frequency list to find the frequency of your player.

Pricing & warrantee
• XO 2 € 109,- (€ 91,60)
• XO 2/5 € 119,- (€ 100), contains optional output with nominal frequency / 2
• XO 3 € 139,- (€ 116,81)
• XO 3/5 € 149,- (€ 125,21), contains optional output with nominal frequency / 2

Prices exclude shipment and payment cost. Prices in brackets are ex VAT. XO-2 and XO-3 come fully assembled, tested and adjusted with a 5-year full warrantee.