Da8-v user manual jcf audio, llc. 11247 camarillo st. North hollywood, ca 91602 www.Jcfaudio.Com contact@jcfaudio.Com j c f a u d i o da8-v 11 2 4 7 c a m a r i l l o s t . N . H o l l y w o o d , c a 9 1 6 0 2 • w w w. J c f a u d i o . C o m.
Da8-v safety information do not repair, modify, service this device except in the manner in which it is described in this manual. Doing so can endanger the user and others as well as void the warranty. Fuses should be replaced with the exact values and sizes stated in the manual. Jcf audio, llc acce...
Overview the da8-v is an 8 channel digital to analog converter that utilizes the akm ak4359 in combi- nation with a tube line stage that was inspired by the ampex 351 reproduce circuitry. The unit accepts the industry standard aes/ebu protocol on a db25 connector with an addi- tional courtesy turn-a...
Rear panel analog power - this 4 pin xlr jack is for connection to the supplied analog power supply. The pinout is as follows: pin 1 - pin 2 - pin 3 - b- pin 4 - b+ digital power - this 4 pin connector is for connection to the supplied digital power supply. The pinout is as follows: pin 1 - pin 2 - ...
Aes/ebu input - the popularity of db25 for bi-directional aes/ebu communication presents a unique challenge to the user attempting to connect devices to a system that only utilize one direction (as in the case of the da8-v). The most common situation is that one will go to plug in the converter for ...
The aes/ebu input is self-syncing and the ch. 1/2 input stream’s recovered clock is the reference for the unit under all conditions. This allows for setup-and-forget operation on all sampling rates up to and including 96khz. The front panel control la- beled “operation” must be set to x4 for use at ...
Fan - the fan hole in the rear of the unit and the air inlet grate at the front of the unit should remain unobstructed at all times. Proper airflow is essential to keep the tubes and surrounding circuitry at a reasonable operating temperature. Do not defeat the fan for any reason. Power supplies: bo...
Cabling: the da8-v ships with 3 included cables: a male to male 4-pin cable for transferring power from the included analog power supply to the main unit. This cable is wired “straight through”. Pin 1 to pin 1, etc. A female to female circular “ham connector” cable for transferring power from the in...
De-emphasis is not supported anywhere in the da8-v. Power consumption: 100w idle tube compliment: 8 - 12ax7 8 - 12au7 1 - 5r4 (located in analog power supply) life expectancy is ~18 months on this tube. Thd+n (48khz, 400 to 18k bw, 1khz tone) -20dbfs to 0 out: 0.03% -10dbfs to +10 out: 0.008% -30dbf...
Frequency response ( no output load) @ 44.1khz: 20hz to 20khz +/- 1.5db @ 88.2khz: 20hz to 40khz +/- 1.5db @ 176.4khz: 20hz to 80khz +/- 1.5db dac residual noise ( no bw limiting, no attenuation ) 192k: - 96k: - 48k: - dac residual noise (22k upper bw limit, “lev” fully clockwise) 192k: -71dbu 96k: ...
Fuses: 2x 500ma 5x20mm on digital section, inside unit 1x 3a, 3ag (analog supply) 1x 1a, 3ag (digital supply) notes: the 12au7 output tubes are recommended to be replaced every 24 months. The 5r4 rectifier tube does quite a bit of power handling and as a result it may need to be replaced every 18 mo...
Fcc compliance: this device complies with part 15 of the fcc rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause un- desired operation. Warran...
Some states do allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. This warranty only applies to products...
