Successive bars appear at RF signal levels of 19, 29, and 38 dBf. No need to risk blowing HD lock checking for HD-3.Ī signal-strength indicator shows zero to three bars. A thoughtful feature is the small display arrow that tells whether another channel exists. The TUNE buttons, also labeled SELECT, select an HD Radio multicast channel. PRESET + and PRESET − sequentially tune them. The tuner provides 20 presets on FM and 20 on AM. Pressing just about any button halts the scan. The tuner pauses for three seconds at each signal found. SCAN scans the band in 200 kHz steps on FM and 10 kHz steps on AM (up only). The XDR-F1HD tunes in 100 kHz steps on FM and 10 kHz steps on AM with the TUNE + and TUNE − buttons. Surely one of these definitions provides insight. It is also the ritual where sumo wrestlers down on their fists glare fiercely at each other before a match begins. Shikiri means partition, division, boundary, or compartment. A small square of plastic film insulates contact with the tuner module.
On the underside of the top cover is a curious bare PC board attached with screws and white adhesive. The HD module contains an SAF3550 processor and a 16MB SDRAM. Unsolder the shield facing the heatsink and inside you'll find the NXP TEF6730/SAF7730 radio chipset and several adjustments. Two snap-on shields are soldered to the tuner module at its upper corners. The other module is the HD Radio processor.
Should the link ever fail due to a temporary fault, you can install an external fuse. The silkscreen identifies both pins of the transformer's internal fusible link. The tuner module is next to the power transformer, which was still too hot to touch ten minutes after removing the cover. Mounted vertically on the motherboard is a seventh voltage regulator on a heatsink and two shielded modules. All boards identify components, signals, voltages, and test points. The system controller is on the display board. Surface-mount parts, including six voltage regulators, populate the underside of the motherboard.
In parallel on the motherboard below are two blue electrolytics rated at 85° C. Directly above the rectifiers are two green electrolytics rated at 105° C. Its five rectifiers are bypassed to suppress AM interference.
The power board delivers unregulated 5.2V and 10.5V. design patent D598,892 S covers the Sony's ornamental design.įive screws retain the top cover, which easily comes off. This compares the size of the XDR-F1HD with that of the Sangean HDT-1X. Louvered vents span the top surface at the rear. Perforated vents cover much of the bottom and the upper rear panel. It requires two AAA batteries, not supplied. The tuner includes an infrared remote control. The rear panel has a recessed reset button. The front panel has a power button and LCD, while the top surface has ten control buttons. The captive two-wire line cord has a polarized plug and rated power consumption is 13 watts. The tuner comes with an FM dipole and a multiturn AM loop antenna.
The FM antenna input is a 75Ω coaxial F-connector. The quest for audio nirvana certainly isn’t easy.The XDR-F1HD receives all AM and FM HD Radio modes, including multicasts, as well as analog AM and FM.Īt 7⅛″ × 6⅜″ × 2⅜″, the tuner is much smaller than standard stereo components. Of course, you also get an increased footprint in your rack with additional black boxes. Furthermore, by having the electronically noisy amps in a separate enclosure, energized by their own dedicated power supply, you can theoretically enjoy improved audio quality. That said, this isn’t such a bad deal because you can then choose an amplifier that mates well with your particular speakers. Don’t expect a discounted price, though with such a limited audience for pre/pros, you can expect to pay top dollar even when the amps are absent. Most companies offer only one model-if that-and it’s generally a reconstruction of their flagship AVR minus the amp section. The same can’t be said for the surround processor market, which is extremely limited by comparison. If you’re in the market for a new AVR, you can spend countless hours researching all of the various manufacturers’ Websites and, when all is said and done, still have 20 or more models to choose from that have all the bells and whistles you want. Yamaha’s new pre/pro is a surefire contender, though its matching 11-channel amplifier wasn’t quite the same caliber.