T he business of o p e ra tin g p h o n o g ra p h s requires in s tr u m e n ts t h a t are s im p le a n d yet efficient.
H u n d re d s of pages c o u ld be w ritte n , d e ta ilin g th e sup e rio r m e c h a n ic a l p o in ts of th e Rock-OIa
M ulti- Selectors. However, th e fo llo w in g m a jo r facts are s u ffic ie n t to prove t h a t R ock- O Ia p h o n o
g raphs are th e k in d of p h o n o g ra p h s you can easily a n d p ro fita b ly o p e ra te :
Cabinets by Rock-OIa: All built in Rock-Ola’s own huge,
modern woodworking plant. In design and finish they are rich . . .
beautiful . . . eye catching. Built with only extra heavy kiln dried
lumber. Finished in smart combinations of walnut veneers. Hand
rubbed to give a permanent, silken finish.
Perfect Size: Easy to handle. Takes little floor space. Dimensions
—51 inches high, 29 inches wide, and 21 inches deep. Shipping
weight, 290 pounds.
Alive with Color: The most fascinating light-up effects ever
designed! The background in the upper compartment has a striking
array of color, interspersed with silhouettes of dancing girls. This
display can be illuminated even when the machine is not playing.
12-Record Multi-Selector: Permits the selection of any one
record or a complete program. Plays consecutively if no selections
are made. Selector panel is richly colored and illuminated. Just
press the proper buttons and
presto . . . the chosen selections
will play. Entirely mechanical . . cam operated. There are no
clutches. No adjustments.
Positive M echanically Driven Trays: Mechanical delivery
and return of each record tray is sure and positive. No springs are
necessary in this type of construction.
Less Parts: ROCKOLA Multi-Selectors are known everywhere
as "the phonographs with the simplest mechanism." Rock-OIa
engineers have eliminated all unnecessary parts. That's why, when
you take off the back door, it all looks so very simple! There is
nothing to jam. Nothing to wear out!
One Positive Cam Movement: The entire changer mechanism
is controlled by a single cam assembly. Simple . . . nothing to get
out of adjustment. The cam is worm-driven by a V-belt from the
power motor. Both cam and worm gear are of tough metal, instead
of fragile bakelite or composition.
Dual Motors: Control motor is designed for the changing of
records only, while the turntable motor is specially designed to
give a 100% noiseless, smooth, even-running turntable. Regardless
of voltage variation, the turntable always runs at the same even
speed. Dual-motors eliminate the need for clutches and other
unnecessary parts. The Dual-motor feature is one of the outstanding
ROCKOLA points of superiority!
No Vibration: By the scientific use of rubber mountings and
insulation throughout the ROCKOLA Multi-Selector, all the
vibration usually found in ordinary phonographs is eliminated. This
insulation, combined with the use of Dual-motors, is greatly
responsible for the perfect tone quality.
Micro Sensitive Switches: The use of the famous Burgess
Micro Switch, known and respected by experienced music opera
tors the country over, is an example of the high quality of every part
of the ROCKOLA Multi-Selector. There can never be burning or
sticking of contact points in the use of this switch.
Record Tripping Switch: Found exclusively on ROCKOLA
Multi-Selectors! Prevents the continued playing of one record by
moving the tone arm over again, after it has played part of the
record. You get one full record of music—no more! Ruggedly built.
Simple. No hair-trigger adjustments.
Super Fidelity Tone: Rich . . . clear . . . deep . . . and power
ful. True, perfect tone quality! The only automatic phonograph to
have an isolated tone chamber . . . full floating speaker baffle . . ■
exclusive crystal pickup . . . permitting true, lifelike, full-range
reproduction of every type of recording. Outside volume control.
Inside tone control.
Lightweight Crystal Pickup: Doubles the life of your records
and needles. Weighs only 3 ounces. Has no moving parts. It is
hermetically sealed in a Bakelite case. Not affected by dampness,
dust, salt air, or other weather conditions. Guaranteed uncondition
ally for one year. Recognized by experts as the last word in pickups.
Pioneered by Rock-OIa.
The Rockola Amplifier: Output is 15 clean, undistorted
watts. It is by far the simplest and most efficient amplifier, of similar
output, ever produced. This is due mainly to the use of the new
6B5 tube, pioneered by Rock-OIa a year ago, and since univer
sally accepted by the radio industry as the best output tube ever
designed. The amplifier is equipped to handle extra speakers.
Rockola Speaker: Extra-size, heavy duty 12 inch speaker. The
finest money can buy.
Full Floating Bafflei An exclusive Rock-OIa feature! The
ROCKOLA speaker is mounted on a heavy, plywood baffle
board which is floated on an ingenious webbed mounting assembly,
completely separating the speaker and baffle unit from the cabinet.
This full floating construction eliminates all cabinet noises and vibra
tion, and assures perfect undistorted music.
Multiple Coin Chute: Takes nickels, dimes, and quarters. It is
conveniently located on top of the cabinet where anyone can see
it, and where it is easily accessible. The most efficient and simple
chute of its kind. Monarch style.
Special Colored Cabinets: Choice of Empire Green, Mulberry,
or Chinese Red at small additional cost.
Special Current: Standard models operate on 110 Volt, 60
cycle A.C. Available for D.C. at small additional cost.
I t is n o secret t h a t th e R O C K - O L A R E G U L A R a n d th e N IG H T - C L U B are th e tw o best se llin g
m u s ic a l in s tr u m e n ts in th e c o in m a c h in e in d u s try . T h is m e a n s t h a t , despite m ass p ro d u c tio n ,
p r o m p t s h ip m e n t can be m a d e o n ly o n orders p r o m p tly received. F or th is reason, it is advisable
to w rite, wire, p h o n e , or com e in to d a y !
R O C K - O L A MFG. C O R P O R A T I O N
AVENUE,
© International Arcade Museum
CHI CAGO,
I L L I NOI S