Q44 Stereo P
ower Amplifier
Q44 Stereo Power Amplifier
2
Architects’ and Engineers’
Specifications
The power amplifier shall be a dual-channel
model of solid-state design employing high-
power output devices in a true-complemen-
tary-symmetry output circuit. It shall be ca-
pable of operating from a 120/230/240-V, 50/
60 Hz ac line. The power amplifier shall con-
tain a limiter circuit driven by a high-qual-
ity input/output comparator to protect the
load from damage by amplifier clipping. The
amplifier shall meet various worldwide
safety requirements including Underwriters's
Laboratories UL-813 Standard, Canadian
Standard, and CE-Standard
The amplifier shall contain sensing circuitry
to provide protection for the output transis-
tors against over temperature, excessive out-
put voltage, shorted loads, excessive phase
shift and back-EMF current. The load shall
be similarly protected against start-up/shut-
down transients, low ac line voltage and dc.
Rear-mounted controls shall include detented
level potentiometers for each channel, an
input routing switch for selecting dual/ste-
reo or parallel mono operation, a switch for
selecting dual/stereo or bridged operation
and a chassis groundlift switch. Rear-
mounted input connectors shall include a 3-
pin female XLR-type connector wired in
parallel with a male 3-pin XLR-type output
connector for signal routing. Output connec-
tors shall be Neutrik Speakon NL4MP’s for
channels A and B, and another for bridged
operation.
Front-panel indicators shall include power
on, a protection indicator and separate sig-
nal present and limiter indicators for each
channel. Front-panel controls shall include
a power on switch.
The power amplifier shall meet the follow-
ing performance specifications: rated output
power from 20-20,000 Hz at less than 0.2%
THD, each channel 230 watts into 8 ohms,
350 watts into 4 ohms and 450 watts into
2 ohms. In bridged mode at 1 kHz, the am-
plifier shall deliver 900 watts into 8 ohms
and 1,300 watts into 4 ohms. Hum and noise
shall be at least 103 dB (A weighted) below
rated output power; damping factor shall be
greater than 300 at any frequency up to 1 kHz
in any mode with an 8-ohm load; THD (total
harmonic distortion) shall be less than 0.05%
at 1 kHz at rated output power; crosstalk shall
be greater than -80 dB at 1 kHz at rated out-
put power; transient intermodulation distor-
tion (DIM 30), shall be less than 0.03%.
Dimensions shall be 132.5 mm (5.25 in)
high x 483 mm (19.0 in) width x 385.5 mm
(15.7 in) deep. Net weight shall be 16 kg
(35.2 lb). Color shall be light gray.
The power amplifier shall be the Electro-
Voice Q44.
Limited Warranty
Electro-Voice products are guaranteed
against malfunction due to defects in mate-
rials or workmanship for a specified period,
as noted in the individual product-line
statement(s) below, or in the individual prod-
uct data sheet or owner’s manual, beginning
with the date of original purchase. If such
malfunction occurs during the specified pe-
riod, the product will be repaired or replaced
(at our option) without charge. The product
will be returned to the customer prepaid. Ex-
clusions and Limitations: The Limited
Warranty does not apply to: (a) exterior fin-
ish or appearance; (b) certain specific items
described in the individual product-line
statement(s) below, or in the individual prod-
uct data sheet or owner’s manual; (c) mal-
function resulting from use or operation of
the product other than as specified in the
product data sheet or owner’s manual; (d)
malfunction resulting from misuse or abuse
of the product; or (e) malfunction occurring
at any time after repairs have been made to
the product by anyone other than Electro-
Voice Service or any of its authorized service
representatives. Obtaining Warranty Ser-
vice: To obtain warranty service, a customer
must deliver the product, prepaid, to Elec-
tro-Voice Service or any of its authorized
service representatives together with proof
of purchase of the product in the form of a
bill of sale or receipted invoice. A list of
authorized service representatives is avail-
able from Electro-Voice Service at 600 Cecil
Street, Buchanan, MI 49107 (800/234-6831
or FAX 616/695-4743). Incidental and
Consequential Damages Excluded: Prod-
uct repair or replacement and return to the
customer are the only remedies provided to
the customer. Electro-Voice shall not be li-
able for any incidental or consequential dam-
ages including, without limitation, injury to
persons or property or loss of use. Some
states do not allow the exclusion or limita-
tion of incidental or consequential damages
so the above limitation or exclusion may not
apply to you. Other Rights: This warranty
gives you specific legal rights, and you may
also have other rights which vary from state
to state.
Electro-Voice Electronics are guaranteed
against malfunction due to defects in mate-
rials or workmanship for a period of three
(3) years from the date of original purchase.
Additional details are included in the Uni-
form Limited Warranty statement.
For warranty repair or service informa-
tion, contact the service repair department
at: 616/695-6831 or 800/685-2606.
For technical assistance, contact Technical
Support at 800/234-6831 or 616/695-6831,
M-F, 8:00 a.m. to 5:00 p.m. Eastern Stan-
dard Time.
Specifications subject to change without
notice.
