Electro voice q 66 t brochure

Page 1

EIeclrol/oice -

066T

Stereo Power Amplifier
33!] watts per channel at 8 ohms,
600 watts per channel at 4 ohms

. 1,200 watts bridged at 8 ohms at 1 tdrz

- 570 watts per channel at 25V,

580 watts per channel at 70.7 volts
and 590 walls per channel at 100 V

. 1,140wattsat5ll V, 1,160wattsat
140Vend1,1wwatlsat2tlov in
bridged mode

- Hiph-pettnnnanee audio limiters tor
lreedomlrom clipping

- Hear-mounted Ila-sealed pain controls

0 Can drive low-impedance and
constant-voltage lines simultaneously

- Detachable Thoenix Ema-style"
lnputand output connectors for easy
sipnal routing and hookup

Description

The Electro-Voice 066T amplifier is a very
high-quality power amplifier designed to
elicit excellent performance from any
speaker system as well as 25V, 70.7V and
100V lines. its low distortion and substan-
tial headroom ensure that program material
will be accurately amplified.

Each channel of the 0661' delivers more
than 300-watts continuous average power
into 8 ohms and 500 watts into 4 ohms
over a frequency range of 45 - 20,000 Hz
In its transformer-isolated dual mode, it can
deliver more than 500 watts into 7.5, 70.7 or
loo-volt lines. In the bridged mode at 1 Hi;
the amplifiercnn delivermore than 1,2) watts
intoSohmsatlessthan 1%Tl-ll).Bothdirect
and transformer-isolated outputs may be used
simultaneously. The power supply with its
large toroidal transformer gives the ampli-
fier impressive headroom and current out-
put.

The 066T contains 20 high-power output
devices with 5,000 watts of dissipation cu-
pability. These devices are protected from
overheating by two. three-speed tempera-
ture-sensitive fans. The fans are quiet enough
to permit use of the 066T in noise-sensitive

applications such as recording studios and
houses of worship.

lheoutputdeviccearemountedtotwolarge,
extruded aluminum heat sinks that are engi-
neered to minimize thermal gradients and
allow the amplifier to operate safely into low-
impedance loads. The output devices have a
maximum junction temperature of 200° C
(392 F), so high operational temperatures
present no problems. The output devices are
mounted directly to the heat sinks without
mica insulators to ensure better dissipation
of heat.

The 0661 has sophisticated protection Cir-
cuits that guard it and the load fi'om prob-
lems. Protecnon circuits guard against over-
load, over-temperature, shorted outputs, ra-
dio-fiequency interference and dc fauls. The
output devices are protected against damage
from the reverse feeding of electrical energy
(back EMF) from the load and are switched
on via relays to avoid transients which could
damage speakers There 5 also a transformer
saturation protection circuit that monitors the
current demands of the transformer and can
activate the limiters when the input signal
reaches +20 dBu at any frequency.

The Q66T has built-in limiters to protect
speakers from the deleterious effects of arm

plifier clipping. The limiters action is con-
trolled by very sophisticated input/output
comparators which are designed to preserve
the sonic integrity of the source.

The 066'! has electrmrically-balanced XLR-
type and removable Phoenix Contact Euro-
sryle input connectors in parallel that allow
easy, problem-free connections and signal
routing. The amplifier ha an input routing
switch that allows selection of either normal
dual-channel operation or parallel mono op-
eration. which routes an input to both chan-
nels but still allows independent level con-
trol. Optional input uansforrners may be
added to the amplifier to provide for even
greater immunity from interference.

'111e 0661' 5 Phoenix Contact Euro-style
reniovahle output connectors provide sturdy,
reliable connections and allow use of heavy
wire for loss-free signal transmission. There
are easily identifiable connections for the
direct outputs and for the transformer-iso-
lated E. 70.7 and IOU-volt outputs which
may be used simultaneously.

To prevent yound loops from occurring, the
0661' is equipped with a ground-lift switch
When the amplifier is operated in a rack with
units of diiferent ground potential, the switch
may be adjusted to eliminate hum.

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Q66T Stereo Power Amplifier

Q66T Stereo Power Amplifier

Separate dB-scaled potentiometers on the
rear panel of the 066T allow easy regula-
tion of gain. There is easily readable nomen-
clature to ensure repeatable control settings
The Electra-Voice 0661' is an excellent
choice for high-quality professional sound
system applications which require excellent
sound quality, speaker protection and the
highest level of construction quality and
long-term reliability.

Architects and Engineers
Specifications

The power amplifier shall be a dual-channel
model of solid-state design employing high-
power output devices capable of driving nor-
mal speakers and 25 - 100 volt lines. It
shall be capable of operating from a 120/
230/240-V. 50/60 Hz ac line. The power
amplifier shall meet many worldwide prod-
uct safety requirements including
Underwriters Laboratories UL-813 stan-
dard, Canadian Standards and CE standards.
The power amplifier shall contain a limiter
circuit driven by a high-quality input/output
comparator to protect the load from damage
by amplifier clipping. The amplifier shall
contain sensing circuitry to provide protec-
tion for the output transistors against
overtemperature, excessive output voltage,
shorted loads, excessive phase shift and
back-EMF current. The load shall be simi-
larly protected against starr-up/shutdoWn
transients, low ac line voltage and dc.
Rear-mounted controls shall include detented
dB-scaled level potentiometers for each
channel, an input routing switch for select-
ing dual/stereo 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 out-
put connector for signal routing. Output con-
nector shall be a Euro-style" Phoenix Con-
tact 12-pin #KGSMSTBZj/lz connector.

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 witch.

The power amplifier shall meet the follow
ing performance specifications: rated output
power from 2040.000 Hz at less than 0.2%
THD, each channel 300 watts into 8 ohms.
500 watts into 4 ohms as well as 25, 70 or
100 volt lines; In bridged mode at 1 kHz.
the amplifier shall deliver 1,200 watts into
8 ohms; THD (total harmonic distortion)
shall be lessthan 0.05% at 1 kHz at rated out-
put power at 8 and 4 ohms, 0.1% at 100 volts.
0.2% at 70 volts and 03% at 25 vols; tran-
sient inter-modulation distortion (DIM 30),
shall be less than 0.03% at 8 and 4 ohms,
0.1% at 100 volts, 0.3% at 70 volts and 0.5%
at 25 volts . Dimensions shall be 1325 mm
(5.5 in) high x 483 mm (190 in) width x
385.5 mm (15.7 in) deep. Net weight shall
be 2.5 kg (49.6 lb). Color shall be fight gray.

The power amplifier shall be the Electro-
Voice 0661'.

limited Warranty

Electra-Voice products are guaranteed
against malfunction due to defeos 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 owners 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 owners manual; (c) mal»
function resulting from use or operation of
the product other than as specified in the
product data sheet or owners manual; (d)

malfunction resulting from misuse or abuse
of the product; or (e) malfunction occurring
runny timeafterrepairs havebeenmadeto
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 Elmo-Voice Service at600 Cecil
Street, Buchanan, Ml 49107 (800/734-6831
or FAX 616/695-4743). Incidental and
Consequential Damages Excluded: Prod-
uct repair or replacement and return to the
momer 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 Riglm: This warranty
gives you specific legal rights, and you may
also have other righm which vary from state
to state.

Electra-Voice Electronlt: 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 assistance1 contact Technical
Support at SOD/234.6831 or 616/695-6831,
M-F, 8:00 3.111. to 5:00 pm. Eastern Stan-
dard Time.

Specifications subject to change without
notice.