OB–4 is our ultra thin 'orthobook' bluetooth loudspeaker with a sound larger than its appearance and really long battery life. discover deep bass and crystal clear, open and natural audio that fills the entire room.
listen using line-in, bluetooth, FM radio and disk mode. the unique mechanized interface is minimal with intuitive functionality. yet if you look beneath the surface, there's more than meets the eye.
comes in 7 colors. from 549 USD
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buy now
teenage
engineering
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OB—4
the magic radio.
ultimate portable loudspeaker.
made to be played wherever you need, however you want. outside on the porch, at a picnic, or take it from your home to your holiday. then use your custom mesh carry bag to play OB–4 on the move.
or why not give it a home in your kitchen? the adjustable handle not only houses an extra antenna, but makes it a breeze to carry – it can also be used as a stand for a more relaxed listening position.
• 72 hrs listening
four tailor-engineered speaker elements deliver pure quality sound and a stereo field that fills the entire room. a flow-optimized bass reflex duct delivers deep natural bass.
• natural sound
four tailor-engineered speaker elements deliver pure quality sound and a stereo field that fills the entire room. a flow-optimized bass reflex duct delivers deep natural bass.
• the wireless part
OB–4 is a wireless speaker that supports bluetooth classic for audio streaming and bluetooth low energy for wireless volume control via the orthoplay app and ortho remote.
• slim and portable
big sound in a small package. OB–4's compact size and built-in handle means you can take quality sound anywhere, from your living room to the studio and beyond.
motorized user
interface.
interface.
use your fingers to grab, spin and interact with the sound.
digital-motion controlled volume knob and tape reel. we call it the next level of user experience.
digital-motion controlled volume knob and tape reel. we call it the next level of user experience.
BRUSHLESS MOTOR, HALL EFFECT
SENSOR & INTELLIGENT MOTOR
CONTROL ALGORITHM.
SENSOR & INTELLIGENT MOTOR
CONTROL ALGORITHM.
turn your mind on with disk mode.
beyond the traditional features like line-in, bluetooth and FM radio, you can find disk mode. this is where we update OB–4 with new features that push beyond the usual. it's our public research space where we
explore and prototype everything that this media instrument could be. right now, functions on disk include: ambient, karma, metronome, noise and loop. the orthoplay app is where we reveal the latest updates.
ambient
zone out to a drone generated
by snippets of any audio source.
metronome
sync with metronome, including
808 with pitch adjustment.
karma
30 in 1 musical mantra box.
your spiritual companion.
noise
induce calm and focus with white,
brown and pink noise frequencies.
loop
create audio loops, store them and
beat match, all on OB–4.
ambient
zone out to a drone generated
by snippets of any audio source.
metronome
sync with metronome, including
808 with pitch adjustment.
karma
30 in 1 musical mantra box.
your spiritual companion.
noise
induce calm and focus with white,
brown and pink noise frequencies.
loop
create audio loops, store them and
beat match, all on OB–4.
ambient
zone out to a drone generated
by snippets of any audio source.
metronome
sync with metronome, including
808 with pitch adjustment.
_
karma
30 in 1 musical mantra box.
your spiritual companion.
_
noise
induce calm and focus with white,
brown and pink noise frequencies.
loop
create audio loops, store them and
beat match, all on OB–4.
_
what's all the
hocus pocus about?
hocus pocus about?
have you ever wished you could instantly rewind when listening to the radio to hear the title of the song just played? OB–4 memorizes everything you listen to on an endless looping tape*.
rewind, time-bend, loop, keep time or zone out, all at the flick of your fingertips. on purpose, or by accident. OB–4 let's you listen like never before, and that's just the beginning of its many magic tricks.
*ROLLING 2 HOUR RECORDING
magic studio monitor.
the low latency line input makes OB–4 the ideal portable studio speaker. plug-in your instruments, a record player, any device that has an audio output. or use the fm signal to connect to OP–1 field.
while you play, use OB–4 as part of the performance. play around with ambient mode, use the metronome to keep time, or loop your beats to create something new. live remix and experiment in the moment.
shop OB–4
technical
specifications
specifications
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 @ 1 m stereo configuration
92 dB unsupported wideband
bass capability @ 1 m
104 dB SPL supported
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 @ 1 m stereo configuration
92 dB unsupported wideband
bass capability @ 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
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
white
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
AC 100-240 V 50/60 Hz
universal built-in power supply
colors
white
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
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
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
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