Electro-Voice Royal 400 User manual

Electro-Voice Royal 400 User manual
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The new Electro-Voice Royal 400 is a 3-way low-resonance
system which, despite its ultra-compact design, provides ex-
- ceptionally wide-range response. It contains a special 18
woofer, the Electro-Voice Model 18WS, utilizing a 4 Ib,
10 oz. ceramic magnet; an 8” mid-range cone-type speaker,
with a 1 lb., 6 oz. ceramic magnet; and a compression-type
very high frequency driver. These features make it an ex-
cellent choice for either monaural or stereo reproduction.
Constructed of fine hardwood veneers, the use of heavy,
vibration-free 34” panels gives the Royab+40€ в
Nominal Impedance: 8 ohms
Power Handling
Sine Wave: 30-2500 cps., 30 Watts, Maximum:
2500-20,000 cps., 5 Watts, Maxi-
Program: Maximum undistorted output of 70
Watts amplifier on complex pro-
gram signal.
Frequency Response
Range: 30-19,000 cps. + 4 db.
Components: 18" woofer, 8” extended range
speaker, compression high-frequen-
cy driver, crossover network, two
level controls,
Size: 15” Deep, 27%” High, 25%” Wide.
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Figure 2 Component Wiring
Figure 3 Frequency Response, Royal 400 System
Setting Up For Operation
Shipping Damage: Your Royal 400 1s packed in accordance
with all shipping requirements of the Interstate Commerce
Commission, plus extra protection. If shipping damage occurs,
contact the carrier directly, requesting inspection and instruc-
tions. Use the date code of the speaker in your corresponden”
Date Code Number: The date code is noted on your warranty
registration card. The number indicates type, style, and date
of manufacture of the unit. Always use this number in your
Warranty Card: To register your Royal 400, fill out the War-
ranty Registration Card and send it to the factory within ten
days after your purchase.
Me proYides the best coupling between the speakers
air in fthe room, the corners and walls acting as a
Connection of your Royal 400 to the amplifier should be
made with No. 18 or larger wire (Common lamp cord is
good). If you wish to run the lead between amplifier and
speaker farther than 30° or to run it behind a moulding strip
or under a carpet, use 300-ohm TV twin lead. Connect to
the 8-ohm and common taps on the back of the amplifier. Be
certain that these connections are secure. Connectors, already
in place between terminals on the Royal (Fig. 4), should be
left in place unless unit is used for stereo reproduction wi
E-V Stereon 300 “add-on” unit. Specific instructions will «
found with the Stereon 300.
: 50 |
Amplifier Connections
| Figure 4
Level Controls
Your Royal 400 is equipped with two controls, a treble
array adjustment and a brilliance control, both of which
are on the rear panel. Set treble array fully clockwise unless
the unit is to be matched in a stereo arrangement with a
speaker of differing efficiency.
Brilliance control setting should usually be at “МОВ МАТ
but this may be adjusted to suit the acoustics of the room . _
which the Royal is used. À simple, convenient way to adiust
the high-frequency level control is to tune in a live FM
broadcast and listen closely to the announcer’s voice, particu-
larly the “s” and “t” sounds, at a volume level equal to that
of your own speaking voice. Adjust the control until the “s”
N A —————————_————_————————— ——= — =
and “t sounds are no more prominent in the announcer's
speech than they are in yours; such an adjustment will
enerally be quite satisfactory. Too high a setting of the
hish-frequent) control will be audible as a piercing,. harsh
“metallic” sound. The best guide, of course, to proper setting
— of the control on the speaker system, is a familiarity with the
~und of live music. Most listeners will find it easy to balance
& sound to conform to their personal tastes.
Stereo Operation
Your Royal 400 is designed to give professional quality sound
reproduction. The same performance features which make
this unit outstanding for monaural reproduction will also give
superb performance in stereophonic array.
The wiring connections for a pair of Royals in stereo are
shown in Fig. 5. When connecting be sure to run the lead
from T1 on the Royal to the 8-ohm terminal on the amplifier
and from T2 to the COMMON terminal. With this connection
both units will then be phased correctly.
T Ti T2 MT
can C 8n
Amplifier Connections For Sterec
Figure 5
.. Aacement For Stereo
When arranging a pair of Royal 400's in stereo array, the
units should be placed at positions which allow the listener to
sit in the area of the apex of a 30° to 40° angle, as shown in
Fig. 6. This will provide the best stereophonic effect. If this
placement is not possible, you may, by experiment, use room
reverberations to advantage in finding other desirable positions.
Figure à
Conventional Placement
of Speakers for Stereo
«##idening The Stereo Ares —
3-Channel Listening
The natural extension of 2-channel stereo reproduction is to
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In stereo recording, great pains are taken to capture full
realism by using 3 microphones to insure complete coverage
of the sound stage. The sound from the microphone in the
center is then “mixed out” to both left and right channels of
recorded sound. From this master recording emerges the
commercially available 2-channel stereo tape or disc.
In these “two track” stereo tapes and discs the element of
this third channel remains and can be reformed by means of
the Electro-Voice XT-1 Stereo Mixer Transformer. XT-1
recovers the center sound from the left and right channels,
adds them together in the correct proportions, and passes
them to the central speaker.
The addition of this third channel to your system gives com-
plete flexibility of seating, in that one can now enjoy good
stereo anywhere in a very large room, or more importantly,
quite close to the loudspeakers in small rooms. At all times,
in virtually any listening position there is a complete curtain
of stereo sound.
For those who have space or budget limitations, a Stereon 300
(see next page) can be used with the Royal 400 for either
two- or three-channel stereo. The Stereon 300, which matches
exactly the treble array of the Royal 400, can be used virtually
without compromise in sound by taking advantage of a
natural phenomenon: in 1934, an acoustic engineer, Harvey
Fletcher, determined that sounds from about 300 cycles per
second downwards in the audio spectrum (which have a wave-
length greater than 3% feet) are not intercepted to any per-
ceptible degree by the head; accordingly, the ears find it
impossible to detect the direction from which ‘such sounds
originate. E-V Stereons take advantage of this phenomenon
by using the full bass reproduction capabilities of one full-
range reproducing system for all bass and channelling the
“stereo” sounds (above 200 cps.) correctly to each channel.
The Stereons, then, permit easy and economical expansion to
the stereo system.
The popular approach to E-V Panasound (3-channel stereo
sound) is obtained by using two Royal 400's with one Stereon
300. This arrangement permits the use of two full-range
units, to achieve the fullest bass response, Where space is an
intense problem, good performance can also be achieved by
using a pair of Stereon 300's with one Royal 400.
Complete wiring diagrams for connecting the Royal 400 with
Stereons and XT-1 will be found in the instruction sheets
accompanying the Stereon.
Speaker Repairs
Your Royal 400 system is guaranteed indefinitely against de-
fects in workmanship and materials. Should it become
damaged or develop faulty operation from unusual con-
ditions of use, Electro-Voice maintains a complete service
department to put equipment in factory-new conditions. Please
write for authorization and shipping instructions before re-
turning any equipment. Be sure to give full name and
address together with a short description of the difficulties
in your system.
Technical Service
The firm from which you purchased your equipment knows
thoroughly the application of Electro-Voice products and
high-fidelity stereo techniques. His advice on the installation
of Electro-Voice components and on the selection of associ-
ated high-fidelity equipment will be invaluable. Technical
problems which cannot be answered locally may be referred
Electro-Voice, Inc.
Buchanan, Michigan
LETICT Sui aD ES TEME As ciccuo- voice 15 genuinely
convinced that a precision ceramic cartridge is the finest type that can
be made today . . . the superiority of the E-V Ceramic, Magneramic 31,
is demonstrated in these three areas:
(1) Greater Flexibility — The 31 Series cartridge will operate per-
fectly at any stylus pressure from 2 to 20 grams. The same stylus assem-
bly can be used for operation of both turntable and record changers;
performance need not be compromised by using a special, stiff stylus
assembly for record changers. Record wear is the only criterion in setting
stylus pressure — cartridge operation is not affected. Thus, when con-
verting from a changer to a turntable, or vice versa, replacement of the
stylus assembly is not necessary when using the Magneramic 31.
(2) Higher Output — Along with the trend toward less efficient speaker systems, more amplifier power has become a
necessity. While most stereo amplifiers are now designed with input sensitivities to match the typical 5 millivolt output of mag-
netic stereo cartridges, nearly all monaural amplifiers were designed for at least 8 millivolt input. These cannot be driven to full
output with a magnetic stereo cartridge. с
The Magneramic 31 develops a full 8 millivolt output and couples directly into any magnetic preamp unit. This higher output
should be given special consideration by those planning to convert to stereo with existent monaural amplifiers.
(3) Freedom from Hum. — The increased amplifier gain required to drive low efficiency speakers coupled with decreased
cartridge output has significantly increased system hum problems. Also, conventional methods of hum elimination used in mon-
aural magnetic cartridges become difficult or impossible to apply to stereo magnetics. The Magneramic 31 completely elimi-
nates these problems. It is non-inductive and has adequate output.
The Electro-Voice Magneramic 31MD7 cartridge directly replaces any monophonic or stereophonic magnetic cartridge now
on the market. It feeds into the preamp input jack specified for magnetic cartridges and does not require adapter or circuit
Response Range: 20 to 15000 cps. + 2 db (Westrex 1A) Output: 8 millivolts
Compliance, Vertical: 3.5 x 108 cm/dyne Recommended Load: 22,000 to 47,000 ohms (Magnetic phono
Compliance, Lateral: 3.5 x 106 cm/dyne inputs)
Isolation: 28 db @ 1000 cycles Elements: 2, lead Zirconium Titanate (Ceramic)
Tracking Force: 2 to 4 grams in transcription arms Weight: 8 grams
4 to 6 grams in changer arms Terminals: 4, standard .050” connectors
Styli: 7 mil diamond Mounting Centers: Fits both 1/2” and 7/16”
Audiophile Net $24.00
Want more information? Send for the booklet, “FACTS ABOUT THE ELECTRO-VOICE Magneramic Cartridge.”
Model XT-1 Stereo Mixer Transformer
For use with the Stereon 300 and Royal 400. Only one required
for two- or three-channel stereo system.
Audiophile Net $13.50
Stereon 300
A two-way system consisting of a Radax extended-range speaker,
together with a diffraction horn very high frequency driver. Oper-
ates with the Royal 400 in two- or three-channel stereophonic
Audiophile Net $69.57
a PS Printed in U.S.A,
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