OB–4
introducing OB–4, the portable high fidelity loudspeaker with two 4'' bass drivers and a pair of neodymium tweeters that deliver crystal clear, open natural sound with 38 watts per channel — that's around 100 decibels
of incredible sounding stereo. listen using line input, bluetooth, FM radio and disk. the interface is minimal, with only the things you really need. yet if you look below the surface, there's a lot more than meets the eye.
comes in six colors. from $$$ buy now
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have you ever wished you could instantly rewind when listening to the radio, to hear the title of the song just played? OB–4 continuously memorises everything you listen
to on an endless looping tape*. rewind, time-bend and loop at the flick of your fingertips. on purpose or by accident. instant rewind on radio is just one of the OB-4's magic tricks. *ROLLING 2 HOUR RECORDING
BRUSHLESS MOTOR, HALL EFFECT SENSOR & INTELLIGENT MOTOR CONTROL ALGORITHM.
if you skip the traditional inputs like line in, bluetooth and FM radio, you end up in disk mode. this is where we will continuously develop new experimental features for the OB–4. it's our public research space,
where we allow ourselves to explore and prototype everything that this media-instrument, as we like to call it, can become. for now, there are three functions on the disk; ambient, karma and metronome.
designed to be played outdoors, in public spaces and at high volume; carried on one shoulder with speaker elements facing the head. note: it is assumed that passers-by share the same musical taste.
or why not give it a home in your kitchen? with any luck, the iconic handle makes it a breeze to carry anywhere, and can even be used as a stand for a more relaxed listening position.
made in london by our friends at bill amberg studio. the OB–4 leather bag is the elegant protection you need when you walk the street in that high fashion district in a metropolitan city somewhere. or, when you just want to round off the edges of OB–4 and feel the soft touch of genuine leather.
ultra durable cow hide is hand stitched along four edges for a perfectly tailored and acoustically transparent fit. the detachable strap can be adjusted to several lengths. each of these first edition bags are unique and hand marked with an edition number.
yoga mantra
ambient
fm radio
music
metronome
...more
speaker principle flow optimized bass reflex duct and semi unified chamber. frequency range 52 – 25000 Hz dimensions 232.5 x 284 x 57.5 mm weight 1.7 kg materials amorphous polymer glass fibre reinforced pc and milled aluminium. design features fine pitch tweeter grille, gel dampened handle, custom direct drive volume knob and tape dial. max SPL zum 1 m stereo configuration 92 dB unsupported wideband bass capability zum 1 m 104 dB SPL supported
active crossover frequency 3.5 kHz configuration stereo 2 + 2 tweeter high efficiency ferrofluid cooled neodymium driver. woofer long throw high power capacity neodymium driver. amplifier 2 x 38 W ultra high efficiency class D wireless Bluetooth® classic (AAC) Bluetooth® 5 LE FM radio inputs 3.5 mm stereo in (2.8 Vpp for 0 dBFS) battery life normal volume FM: 72 hours bluetooth high volume: 8 hours
general power requirements AC 100-240 V 50/60 Hz universal built-in power supply colors red matte black navy ochre gray orange included accessories: mains power cable antenna compatible add-ons: ortho remote shoulder strap product name OB–4 (ortho book 4) HARM code 8518220000 country of origin: czech republic
comes in six colors. from $$$
buy now
four tailor-engineered speaker elements deliver pure quality sound and a stereo field that fills the entire room. a flow optimised bass reflex duct delivers deep natural bass.
how about normal radio listening for a week without charging? the high capacity battery delivers about 8 hours of noise at max volume, or an average of 40 hours on a single charge.
the OB–4 hardware platform supports both high-definition bluetooth classic and bluetooth low energy standards. works with ortho remote for wireless volume control.
we've spent years fiddling with the antenna so you won't have to. and for those tricky listening places, we've included a fine-tuned smart spiral antenna that neatly integrates in the handle.
speaker principle flow optimized bass reflex duct and semi unified chamber. frequency range 52 – 25000 Hz dimensions 232.5 x 284 x 57.5 mm weight 1.7 kg materials amorphous polymer glass fibre reinforced pc and milled aluminium. design features fine pitch tweeter grille, gel dampened handle, custom direct drive volume knob and tape dial. max spl zum 1 m stereo configuration 92 dB unsupported wideband. bass capability zum 1 m 104 dB SPL supported. active crossover frequency 3.5 kHz configuration stereo 2 + 2 tweeter high efficiency ferrofluid cooled neodymium driver. 1 X USER'S MANUAL woofer long throw high power capacity neodymium driver.
amplifier 2 x 38 w ultra high efficiency class D wireless Bluetooth® classic (AAC) Bluetooth® 5 LE fm radio inputs 3.5 mm stereo in (2.8 Vpp for 0 dBFS) battery life normal volume FM: 72 hours bluetooth high volume: 8 hours general power req. AC 100-240 V 50/60 Hz universal built-in power supply. colors red matte black navy ochre gray orange included accessories: mains power cable antenna compatible add-ons: ortho remote shoulder strap product name OB–4 (ortho book 4) harm code 8518220000 country of origin: czech republic 1 X USER'S MANUAL
