Ebtech by Morley Hum Eliminator, Line Level Shifter User manual

Hum Eliminator™

Silence AC Hum, forever!
Do you hear a hum or buzz in your audio

signal? Are long unbalanced lines across
stage creating noise problems? Get the
Hum Eliminator™ from Ebtech®.

Almost all AC hum (60Hz in the US, 50 Hz in
most other countries), is caused by ground
loops. These ground loops act like radio
antennae picking up hum and noise. The
Hum Eliminator™ completely eliminates this
by breaking the ground loop, making it
impossible for the signal lines to pick up the
AC hum and noise in the first place.

Just plug the Hum Eliminator™ in the signal
lines between the offending pieces of
equipment and you’re done! Quick and
easy.

No buzz, no hum. No signal degradation. No
filtering. No noise gates. No dangerous
ground lifts.

Both the Hum Eliminator™ and Line Level Shifter™ are used around the world for…

Recording Studios – Audio / Video Production – Stereo / Home Entertainment Systems

Live Sound Reinforcement – Computer / Multimedia Audio – Radio / TV Broadcasts

DJ Setups – Karaoke – Car / Boat Engine Noise

Line Level Shifter™

Solve your –10dBV to +4dBu problems,
now!

What do you do when you need to connect a
low volume –10dBV output (like cassette
deck, CD player or synthesizer) into a high
volume, +4dBu input (like a multi-track
recorder or DAT machine)? Get the Line
Level Shifter™ from Ebtech®

The Line Level Shifter™ uses the physics of
inductance and impedance matching to
increase or decrease the signal voltage
without the added noise of active
electronics. The Line Level Shifter™ also
converts back and forth between balanced
and unbalanced signals automatically. This
is great because most –10dBV signals are
unbalanced while most +4dBu signals are
balanced.

The Line Level Shifter™ also contains
Ebtech’s Hum Eliminator™ technology to
break ground loops that cause AC hum.

Hum Eliminator™

A Division of Sound Enhancement Products, Inc.

• Eliminates AC hum / 60Hz buzz and noise, quick
and easy

• Breaks ground loop safely, while leaving all signal
grounds intact

• Automatically translates signal voltages to match
differences in ground potentials, avoiding clipping

• Converts automatically back and forth between
balanced and unbalanced lines at either end

• 1/4" TRS “smart” jacks (tip, ring, sleeve) inputs
and outputs.

• Completely passive design with audiophile quality
components assures the best possible noise and
distortion performance

• Frequency response 20Hz to 70kHz plus or minus

0.5dB

• Distortion less than 0.005% THD @ 1kHz

• Crosstalk better than –97dB

• Maximum source impedance 1kOhm. Minimum

load impedance 10kOhm

• Available in 2 channel box or 8 channel single
space rack versions

• 2 Year warranty. Ebtech quality and reliability

• Made in the U.S.A.

Line Level Shifter™

• Converts back and forth between –10dBV and
+4dBu

• Converts automatically back and forth between
balanced and unbalanced lines at either end

• 1/4" TRS “smart” jacks (tip, ring, sleeve) inputs
and outputs.

• Built-in Hum Eliminator™ technology eliminates
AC hum / 60Hz buzz and noise

• Automatically translates signal voltages to match
differences in ground potentials, avoiding clipping

• Completely passive design with audiophile quality
components assures the best possible noise and
distortion performance

• Frequency response 10Hz to 40kHz plus or minus
1dB into 10kOhm load

• Distortion less than 0.002% THD @ 1kHz

• Crosstalk better than –97dB

• Maximum source impedance 1kOhm. Minimum

load impedance 10kOhm

• Available in 2 channel box or 8 channel single
space rack versions

• 2 Year warranty. Ebtech quality and reliability

• Made in the U.S.A.

EBTECH®

185 Detroit Street Cary IL 60013
Ph [phone] Fax [phone]
www.ebtechaudio.com