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Table of Contents
Summary of Contents for JCF Audio Latte
- Page 1 L att e LATTE USER MANUAL JCF AUDIO, LLC. 11048 CAMARILLO ST. NORTH HOLLYWOOD, CA 91602 WWW.JCFAUDIO.COM contact@jcfaudio.com 11 0 4 8 C a m a r i l l o S t . # 3 N . H o l l y w o o d , C A 9 1 6 0 2 w w w.
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Page 2: Safety Information
Fuses should be replaced with the exact values stated in the manual. To comply with most electrical wiring codes, the Latte is equipped with a 3 wire IEC style connector, the grounding pin of which is connected to the chassis. JCF Audio, LLC accepts no responsibility for legal actions or for direct, inci- dental, or consequential damages that may result from improper installation, configuration, or use of the Latte. - Page 3 JCF Audio • Concurrent jumper configurable auxiliary output, +22.5 dBu Max. output level - line amp, +6.7dBu Max. output level - preamp • Completely user configurable line input block (Actively balanced, unbalanced) • Multi-turn trimmers for precise control of A/D input level •...
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Page 4: Front Panel Controls
"tweaker" or small screwdriver through the front of the unit. A digital meter with enough resolution should be connected to the LATTE AES output in order to adjust this control properly. This control should not be adjusted un- less the unit has been on for at least an hour and has temperature stabilized. -
Page 5: Rear Panel
• All operation of the A/D section of the Latte at 44.1kHz and multiples thereof require external clocking. • 48k refers to the internal clock which will run the AES compatible outputs @ 48k or multiples thereof (depending upon the setting of the multiple switch). - Page 6 JCF Audio At Latte rear, left: J C F A u d i o L a t t e...
- Page 7 JCF Audio The output impedance of this point is 47 Ω in all unbalanced configurations. The output impedance is ~94 Ω in bal- anced configurations (47 Ω per leg). These conditions are for both preamp and line amp outputs. The 4 transistor line amplifier employed here has a great deal of drive and will have no problem sounding good into loads as low as...
- Page 8 JCF Audio At Latte rear, right: J C F A u d i o L a t t e...
- Page 9 JCF Audio Binding Posts - Ccom, Ch. Chassis and Circuit Common. If you don’t know what they’re for, don’t change them or the installed capacitor between them. J C F A u d i o L a t t e...
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Page 10: Specifications
88200 0.328 ms 96000 0.302 ms 176400 0.164 ms 192000 0.151 ms Emphasis / De-emphasis is not supported anywhere in the Latte. Power Consumption: <25 Watts under all conditions J C F A u d i o L a t t e... - Page 11 JCF Audio Microphone Preamp EIN: -118dBu (with 150 ohm source @ 60 db of gain) Max Gain: 62 db (@ “Bal” outputs) Min Gain: 19 db (@ “Bal” outputs) Frequency Response: 10 Hz to 80 kHz +/- 1 dB (200 Ω source) A/D D/A as a system THD+N figures...
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Page 12: Shipping Weight
JCF Audio A/D D/A as a system - Frequency Response 20Hz to 17kHz +/-1dB (-1.3 dB @ 20kHz) DAC residual noise (no BW limiting) 192k: -57dBu 96k: -55dBu 48k: -28dBu (mostly noise around 40kHz) DAC residual noise (22k upper BW limit, “Lev” fully clockwise) -
Page 13: Jumper Settings
JCF Audio Jumper Settings J1-4 - Adjust for Digital Sample Rate Conversion function as shown in picture Ships configured for A/D operation as shown below: - Dual Wire "mono" mode operation of AES compatible output Ships in stereo mode as pictured below:... - Page 14 AES 1 input on the Latte. If the Latte is in cascade at this point, the analog output of the DMT section would then pass back to the input of the A/D and make a loop. Ouch! Change at your own risk.
- Page 15 JCF Audio J9-12 - Aux. output setup “Rear Panel” See picture and diagrams in the section of this manual. Ships in high level, Pin 2 hot, Balanced mode. J13-14 - Tape mode setup Ships setup for flat (no e.q.) preamp operation (for microphones, and D/A) as shown below:...
- Page 16 This feature was added to make even greater use of the wonderful sample rate converter chip used in the Latte. Four jumpers must be changed in order to enter this mode. Under these con- ditions the Latte A/D will be disabled. AES compatible streams entering on AES 2 will be pre- sented to the sample rate converter and will exit the unit at the new sample rate under the same conditions that would apply for AES compatible outputs in A/D operation.
- Page 17 AES output stream available on AES 1 an AES 2 outputs (in stereo mode) @ 88.2kHz Notes The configuration of the Latte can be tricky. It is designed to be extremely versatile and still do all of the stated jobs as well as possible. Please learn the block diagram as it will certainly help you.
- Page 18 Many of the specifications will disappoint those who look to num- bers to judge a device's merit. Everything in the Latte is as it is for a reason. Thank you very much for taking the time to read this manual.
- Page 19 JCF Audio J C F A u d i o L a t t e...
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Page 20: Fcc Compliance
JCF Audio 1-Year Limited Warranty JCF Audio LLC. “JCF Audio” warrants this product to be free of defects in material and assem- bly for a period of one year for parts and labor from the date of original purchase. This war- ranty is enforceable only by the original retail purchaser and cannot be transferred or assigned without express permission of JCF Audio. - Page 21 Without limiting the foregoing, repairs under this warranty shall be made only by a duly authorized JCF Audio service representative or by JCF Audio itself. For warranty information in other countries, please refer to the dealer or distributor.