Many record changers can automatically sense the size of the records they are playing. Here is a list of
the different methods used, and how each one determines the kinds of stacks of records it can play.
| |
| GROUP |
METHOD |
HOW IT WORKS |
RECORD ORDER REQUIRED |
SAMPLE CHANGER PHOTO |
N
O
S
E
N
S
O
R |
Size Switch |
The user selects the size of the record by moving a control. |
Two, three, or four sizes. Only one size allowed in the stack.
Plays single record on turntable.♦
Sample is
Dual 1209
3-size knob on the right
|
|
| Speed and Size Switch |
The user selects the size and the speed of the record by moving one control. Usually some speed-size
combinations are not available.
This unit allows 7" 33, 10" 33, 12" 33, 7" 45, & 12" 78.
|
Two or three sizes. Only one size allowed in the stack.
Plays single record on turntable.♦
Sample is
Garrard SL-72B
speed-size knob on the left
|
|
| Record Shelf Position |
The user selects the size of the records by setting the side shelf to fit the records.
|
Two or three sizes. Only one size allowed in the stack.
Plays single record on turntable.◊
Sample is
Philco M-22 ◊
turn shelf on the left
|
|
| Spindle Selected Size |
The user selects the size of the record by changing spindles. Each diameter and hole size has a different
spindle. The spindles slope different amounts, and the lower ends of the spindles are different lengths,
to select the arm setdown point.
|
Two or three sizes. Only one size allowed in the stack.
Plays single record on turntable.◊
Sample is
Milwaukee-Erwood 11600 ◊
change spindle to change size
|
|
| |
| GROUP |
METHOD |
HOW IT WORKS |
RECORD ORDER REQUIRED |
SAMPLE CHANGER PHOTO |
T
U
R
N
T
A
B
L
E
S
E
N
S
O
R |
Rising Feelers |
The first record on the turntable is sensed repeatedly for the entire stack. Sensors mounted in the
turntable or beside it detect the first record. The record depresses the sensors according to its
size. |
Three sizes. Only one size allowed in the stack.****
Plays single record on turntable.♦
Sample is
PE-2040
pins in turntable and near rim
|
|
| Swinging Feeler |
Swinging feeler moves in to touch the edge of the first record on turntable.
Must have small turntable.
|
Three sizes. Only one size allowed in the stack.
Plays single record on turntable.◊
Sample is
Philips AG 1116 ◊
feeler in curved slot
|
|
| Hole Size Feeler |
A rising feeler rises 1/2" from the center of the record. If it touches a record, it plays 12" 33.
If it does not touch a record, it plays 7" 45.
A slot in the 45 spindle lets the feeler pass through it.
Plays only 12" 33 and 7" 45.
|
Two sizes. Only one size allowed in the stack. ****
Plays single record on turntable.†
Sample is
Magnavox Micro-Mini W712
feeler in turntable near center
|
|
| 3-Size Turntable Arm Scan |
The pickup arm moves down, and then inward to touch the edge of the first record on turntable. If it does
not find a record, 7" operation is selected. Then the arm rises, moves inward, and sets down on the record.
Must have small turntable.
|
Three sizes. Only one size allowed in the stack.
Plays single record on turntable.♦
Sample is
Philips (unknown model)
protrusion on pickup arm
|
|
| |
| GROUP |
METHOD |
HOW IT WORKS |
RECORD ORDER REQUIRED |
SAMPLE CHANGER PHOTO |
D
R
O
P
S
E
N
S
O
R |
Droplever |
The falling record pushes the feeler down different amounts, or does not strike the feeler, selecting
different record sizes. |
Two or three sizes can be intermixed in any order in the stack.
No single record on turntable.♣
Sample is
Collaro Continental RC-54
feeler protruding from slot
|
|
| Tilting Feeler |
The feeler, shaped like the number 4, tilts forward before the record drops. Then the falling record
strikes the sloped edge and pushes the feeler back different amounts, or does not strike the feeler,
selecting different record sizes. |
Two or three sizes can be intermixed in any order in the stack.***
No single record on turntable.♣
Sample is
Glaser-Steers 77
feeler is behind overarm
|
|
| Semaphore |
The feeler axle is vertical. The falling record rotates the feeler away from the spindle different
amounts, or does not strike the feeler, selecting different record sizes. |
Three sizes can be intermixed in any order in the stack.***
No single record on turntable.♣
Sample is
Garrard AT-60
curved object left of overarm
|
|
| Wedge |
The feeler us shaped somewhat like a guitar pick and sticks out under the stack.
Falling 12" records push the feeler down. Then a spring pulls it back.
10" records push the tip away from the spindle.
7" records do not touch the feeler.
|
Three sizes can be intermixed in any order in the stack.
No single record on turntable.♣
Sample is
Panasonic FA-707A
wedge-shaped object left of overarm
|
|
| Double Droplever |
Two droplevers of different lengths
Falling 12" records push both feelers down.
10" records push the longer feeler down.
7" records do not strike the feeler. |
Three sizes can be intermixed in any order in the stack.
No single record on turntable.♣
Sample is
RCA RP-218 Studiomatic
in slot left of overarm
|
|
| |
| GROUP |
METHOD |
HOW IT WORKS |
RECORD ORDER REQUIRED |
SAMPLE CHANGER PHOTO |
S
T
A
C
K
S
E
N
S
O
R |
Index Arm |
The index arm touches the edge of the stack before the record drops, then backs off so the record can
drop. If no record is found, automatic shutoff occurs. |
Three sizes. Larger records must be below smaller records.
No single record on turntable.♣
Sample is
Webster 100
arm left of overarm
|
|
| 3-Size Arm Scan |
The pickup arm head touches the edge of the stack before the record drops, then backs off so the record
can drop. If no record is found, automatic shutoff occurs. |
Three sizes. Larger records must be below smaller records.
No single record on turntable.♣
Sample is
Collaro PH1252
protrusion on pickup arm
|
|
| Pickup Arm Scan |
The pickup arm touches the edge of the stack before the record drops, then backs off so the record can
drop. If no record is found, automatic shutoff occurs. The use of a slipclutch allows odd-sized records
to be played.
The photo shows the sensing action.
|
12" to 6". Larger records must be below smaller records.
No single record on turntable.♣
Sample is
Collaro Conquest TSC-640
protrusion on pickup arm
|
|
| |
| GROUP |
METHOD |
HOW IT WORKS |
RECORD ORDER REQUIRED |
SAMPLE CHANGER PHOTO |
S
E
P
A
R
A
T
E
R
E
C
O
R
D
S
E
N
S
O
R |
Pickup Arm Scan on Lowered Record |
The record lowers about half an inch. Then the pickup arm touches the separated record. It then backs off
so the record can lower to the turntable. If no record is found, automatic shutoff occurs. A slipclutch
allows odd-sized records to be played. This unit also lowers records slowly to the turntable. |
12" to 6" can be intermixed in any order in the stack.
No single record on turntable.♣
Sample is
V-M 1555
protrusion on pickup arm
|
|
| Pickup Arm Scan on Separated Record |
The record carrier moves the record over the turntable. Then the pickup arm touches the separated
record. The record then drops to the turntable. If no record is found, automatic shutoff occurs.
A slipclutch allows odd-sized records to be played. This unit keeps the unplayed and played records
on separate shelves on the left. |
12" to 6" can be intermixed in any order in the stack.
No single record on turntable.♣
Sample is
Thorens TD-224
protrusion on pickup arm
|
|
| Feeler Wheels |
After the record drops, feeler wheels lower from the bottom of the arm. The arm then moves in and
sets the wheels down near the center of the record. Next, the wheels roll the arm toward the edge of the
record. The wheels are canted and vertically aligned to make the arm stop at the edge of the top record
on the turntable. Then the wheels retract and the arm plays the record. |
12" to 6" can be intermixed in any order in the stack.
Plays single record on turntable.♦
Sample is
Dual 1006
feeler wheels in pickup arm (lower photo)
|
|
| METHOD |
HOW IT WORKS |
RECORD ORDER REQUIRED |
SAMPLE CHANGER PHOTO |
| Record Underside 3-Size Scan |
The arm moves toward the center of the turntable, and then rises to touch the stack. A smooth feeling
surface is on top of the arm with a feeling edge. The pickup arm swings back and forth like a pendulum,
moving farther out each time. The feeling stops if the feeler touches the edge of the bottom record of the
stack. The pickup arm then pushes the record off the spindle ledge. Then the arm moves to play the record.
Automatic shutoff occurs if the overarm is down, leaving the arm at the center of the record. |
3 sizes can be intermixed in any order in the stack.
No single record on turntable.♣
Sample is
Triotrack 457
feeling surface on top of pickup arm (lower photo)
|
|
| Record Underside Scan |
The arm moves toward the center of the turntable, and then rises to touch the stack. There are two
special wheels on top of the arm and a feeling edge. The pickup arm oscillates like a pendulum,
moving farther out each time. The feeling stops if the feeler touches the edge of the bottom record of
the stack. The arm swings out and the record drops. Then the arm moves to play the record. If no record is
found, automatic shutoff occurs. A slipclutch allows playing odd-sized records. |
12" to 6" can be intermixed in any order in the stack.
No single record on turntable.♣
Sample is
Miracord PW 9
bar with wheels on top of pickup arm
|
|
| Shelf Bottom Record Sensor |
The record shelf senses the size of the record while determining which pusher edge to use to push it
off. |
12" & 10" can be intermixed in any order in the stack.
No single record on turntable.♣
Sample is
Webster 70
feeler is inside side shelf
|
|
| |
| GROUP |
METHOD |
HOW IT WORKS |
RECORD ORDER REQUIRED |
SAMPLE CHANGER PHOTO |
C
O
M
B
I
N
A
T
I
O
N
O
F
M
E
T
H
O
D
S |
Size Switch and Tilting Feeler |
The user selects the size range of the records by moving a control. A falling record feeler allows some
intermix of record sizes. |
Usually 12" & 10" intermixed, with 7" played separately. Some mix 12" with the
selected size.
No single record on turntable.♣
Sample is
Collaro Sentinel RC-53
slide switch on right, sensor by overarm base
|
|
| Speed-Size Switch and Droplever |
The user selects the size range of the records by moving the speed control. A falling record feeler
allows some intermix of record sizes.
The sample unit does 12" & 10" 78, 12" & 10" 33, 7" 33,
7" 45.
|
Usually 12" & 10" intermixed, with 7" played separately. Some mix 12" with the
selected size.
No single record on turntable.♣
Sample is
V-M 406
small knob, sensor on rear of tonearm
|
|
| Rising Feeler and Tilting Feeler |
The rising feeler (white arrow) determines whether a stack of 7" records, or larger records, is
being played. A falling record feeler (black arrow) allows intermix of 12" & 10" records. |
Usually 12" & 10" intermixed, with 7" played separately.
No single record on turntable.♣
Sample is
V-M 935
feelers at white and black arrows
|
|
| METHOD |
HOW IT WORKS |
RECORD ORDER REQUIRED |
SAMPLE CHANGER PHOTO |
| Droplever and Size Override Control |
The falling record feeler allows intermix of record sizes. The size override control allows play of a
single record. |
Three sizes intermixed in any order.
Plays single record on turntable.†
Sample is
Philips AG1003
left pushbutton, feeler protruding from slot.
|
|
C
O
M
B
I
N
A
T
I
O
N
O
F
M
E
T
H
O
D
S |
Rising & Tilting Feeler
and Overarm Position |
The rising feeler determines whether a stack of 7" records, or larger records, is being played.
A falling record feeler allows intermix of 12" & 10" records.
Raising the overarm and placing it so the tip is over the rim of the record repeats that
size record. The overarm is shown in the 10" position.
|
12" & 10" intermixed, with 7" played separately.
Plays single record on turntable.†
Sample is
RCA RP-215 R (modified)
feelers at same places as white and black arrows on VM unit above
|
|
Tilting Feeler and
Overarm Position |
The feeler, shaped like the number 4, is under the record. The falling record strikes the sloped
edge, pushing the feeler back different amounts, or misses the feeler, selecting different record sizes.
When raised, the overarm can be placed into one of three positions for repeating the three
record sizes.
|
Two or three sizes can be intermixed in any order in the stack.***
Plays single record on turntable.†
Sample is
Glaser-Steers 3000
feeler is behind overarm
|
|
| METHOD |
HOW IT WORKS |
RECORD ORDER REQUIRED |
SAMPLE CHANGER PHOTO |
Semaphore and
Overarm Position
(Overarm shutoff)
|
The feeler axle is vertical. The falling record rotates the feeler away from the spindle different
amounts, or does not strike the feeler, selecting different record sizes.
A special clip can hold the overarm raised in one of three positions for repeating the three
record sizes.
|
Three sizes can be intermixed in any order in the stack.***
Plays single record on turntable.‡
Sample is
Garrard AT-60 with the clip
curved object left of overarm
|
|
Semaphore and
Overarm Position
(Pusher backtravel shutoff)
|
The feeler axle is vertical. The falling record rotates the feeler away from the spindle different
amounts, or does not strike the feeler, selecting different record sizes.
A special clip can hold the overarm raised in one of three positions for repeating the three
record sizes.
|
Three sizes can be intermixed in any order in the stack.***
Plays single record on turntable.♦
Sample is
Garrard 2025 with the clip
curved object left of overarm
|
|
C
O
M
B
I
N
A
T
I
O
N
O
F
M
E
T
H
O
D
S |
Semaphore and Swinging Feeler |
The feeler axle is vertical. The feeler moves toward the spindle when the cycle begins, and retracts
after the arm sets down. 7" records miss the feeler.
The single-play spindle raises the swinging feeler so its roller can contact a single record
on the turntable.
The multiple-play spindle lowers the swinging feeler below the turntable, so falling records
of various sizes turn the semaphore different amounts.
|
Three sizes can be intermixed in any order in the stack.
Plays single record on turntable.♦
Sample is
Dual 1008
curved objects left of arm base
|
|
| 3-Size Arm Scan and Size Override Control |
The pickup arm touches the stack before the record drops, then backs off so the record can drop. If
no record weight is on the spindle, automatic shutoff prevents the scan. The size override control sets
the size for a single record on the turntable. |
Three sizes. Larger records must be below smaller records.
Plays single record on turntable.♦
Sample is
Miracord PW-161
protrusion on pickup arm, knob in group
|
|
| METHOD |
HOW IT WORKS |
RECORD ORDER REQUIRED |
SAMPLE CHANGER PHOTO |
| Semaphore and Index Arm |
The combined feeler axle is vertical. The feeler moves toward the spindle at the beginning of the cycle,
contacting the largest record on the spindle.
A falling 12" record rotates the semaphore away from the spindle, selecting 12"
operation. 10" and 7" records do not push the feeler out enough to select a different size. If
the feeler does not contact a record, automatic shutoff occurs.
|
12" & 10" intermixed in any order, 7" must be last.***
No single record on turntable.♣
Sample is
Garrard RC 210
curved object over the tonearm
|
|
| Semaphore and Index Arm (5 sizes) |
The combined feeler axle is vertical. The feeler moves toward the spindle at the beginning of the cycle,
contacting the largest record on the spindle.
A falling 12" record rotates the semaphore away from the spindle, selecting 12"
operation. 10", 9", 8", and 7" records do not push the feeler out enough to select a
different size. If the feeler does not contact a record, automatic shutoff occurs.
|
12" & 10" intermixed in any order.
9", 8", and 7" must be last, largest before smallest.***
No single record on turntable.♣
Sample is
Garrard RC 120
curved object over the tonearm
|
|
| Pickup Arm Scan and Index Arm |
The pickup arm touches the edge of the stack before the record drops, then backs off so the record can
drop. If no record is found, automatic shutoff occurs. The use of a slipclutch allows odd-sized records to
be played.
The index arm performs the same feeling action at the same time, but is used for automatic
speed change. It allows small 45 RPM records to be stacked above larger 33 RPM records.
|
12" to 6". Larger records must be below smaller records.
No single record on turntable.♣
Sample is
Collaro Conquest TSC-640 Custom
protrusion on pickup arm
index arm on left behind overarm (brass) ***
(Silver arm is a record cleaner)
|
|
| |
*** This sensor has also been used to intermix record speeds in the stack (large 33 RPM with small 45).
**** This sensor has also been used to sense the record speed for the stack (large 33 RPM or small 45).
♣ The record must be loaded for record changing to play correctly.
♦ Automatic shutoff after the record plays.
◊ This model repeats the last record.
† The overarm must be lowered to cause automatic shutoff after the record plays.
‡ The clip must be removed and the overarm lowered for automatic shutoff after the record plays.
In the following discussion, the use of Audiotex record repeating discs is listed. The repeating discs are
2.75 inches (7 cm) in diameter, with the standard 1.5 inch hole used for large-hole records. A spider adaptor
can be inserted to make the repeating discs work with small-hole records. Two repeating discs are shown at
right:
When making up a record stack, place a repeating disc on top of the record that is to be played twice.
When the repeating disc drops, the changer will play the record under it again, if it can.
Note that they can not be used with the following kinds of changers:
- Changers that have the active record dropping parts in the side shelf. Repeat discs in the stack can
cause the changer to break records.
- Changers with the nodding spindle dropping mechanism (Philco). Repeat discs in the stack can break
records.
- Changers that change records by methods other than dropping or lowering them down a spindle
(e.g. Thorens TD-224).
- Changers that measure the size of the record while it is separated from the other records.
- Changers that can't drop the discs (some need enough weight in the record to work the spindle).
Changers that feel the unplayed stack require that another record the same size as the record to be
repeated must be placed above the repeat disc.
The following is a table of properties of these methods. The column "REPEAT DISCS" tells how the
repeating discs can or can not be used with each type or record changer.
| PROPERTIES OF SIZE SENSING METHODS |
| |
| GROUP |
METHOD |
SIZE INTERMIX |
SINGLE PLAY |
REPEATING RECORDS |
REPEAT DISCS |
NO
SENSOR |
Size
Switch |
none |
Yes |
Yes* |
Yes** |
Speed and
Size Switch |
none |
Yes |
Yes* |
Yes** |
Record Shelf
Position |
none |
Yes |
Yes* |
Center push Yes**
Shelf push No |
Spindle
Selected Size |
none |
Yes |
Yes* |
DANGER
- breaks records |
|
METHOD |
SIZE INTERMIX |
SINGLE PLAY |
REPEATING RECORDS |
REPEAT DISCS |
TURNTABLE
SENSOR |
Rising
Feelers |
none |
Yes |
Yes* |
Yes** |
Swinging
Feeler |
none |
Yes |
Yes* |
Yes** |
Hole Size
Feeler |
none |
Yes |
Yes* |
Yes** |
3-Size Turntable
Arm Scan |
none |
Yes |
Yes* |
Yes** |
|
METHOD |
SIZE INTERMIX |
SINGLE PLAY |
REPEATING RECORDS |
REPEAT DISCS |
DROP
SENSOR |
Droplever
|
2 or 3 sizes, random order |
Only smallest size |
Only smallest size* |
Only smallest size** |
Tilting
Feeler |
2 or 3 sizes, random order |
Only smallest size |
Only smallest size* |
Only smallest size** |
Semaphore
|
2 or 3 sizes, random order |
Only smallest size† |
Only smallest size* |
Only smallest size** |
|
METHOD |
SIZE INTERMIX |
SINGLE PLAY |
REPEATING RECORDS |
REPEAT DISCS |
STACK
SENSOR |
Index
Arm |
2 or 3 sizes, larger records must be below smaller records |
no |
no |
If next record
is same size** |
3-Size
Arm Scan |
3 sizes, larger records must be below smaller records |
no |
no |
If next record
is same size** |
Pickup
Arm Scan |
12" to 6", Larger records must be below smaller records |
no |
no |
If next record
is same size** |
|
METHOD |
SIZE INTERMIX |
SINGLE PLAY |
REPEATING RECORDS |
REPEAT DISCS |
SEPARATE
RECORD
SENSOR |
Pickup Arm Scan
on Lowered Record |
12" to 6", random order |
no |
no |
no - shuts off**
or wrong size |
Pickup Arm Scan
on Separated Record |
12" to 6", random order |
no |
no |
no - shuts off |
Feeler
Wheels |
12" to 6", random order |
Yes |
Yes* |
Yes** |
Record Underside
3-Size Scan |
3 Sizes, random order |
no |
no |
If next record
is same size** |
Record
Underside Scan |
12" to 6", random order |
no |
no |
If next record
is same size** |
Shelf Bottom
Record Sensor |
2 sizes, random order |
no |
no |
DANGER
- breaks records |
|
METHOD |
SIZE INTERMIX |
SINGLE PLAY |
REPEATING RECORDS |
REPEAT DISCS |
COMBINED
METHODS |
Size Switch and
Tilting Feeler |
12" & 10", random order |
10" & 7" |
10" & 7" * |
10" & 7" ** |
Speed-Size Switch
and Droplever |
12" & 10", random order |
10" & 7" |
10" & 7" * |
10" & 7" ** |
Rising Feeler and
Tilting Feeler |
12" & 10", random order |
10" & 7" |
10" & 7" * |
10" & 7" ** |
Droplever and
Size Override Control |
3 sizes, random order |
Yes |
If override
control used* |
Size set on
override control** |
Rising & Tilting Feelers
and Overarm Position |
12" & 10", random order |
Yes |
If overarm
position used* |
10" & 7" ** |
Tilting Feeler and
Overarm Position |
3 sizes, random order |
Yes |
If overarm
position used* |
Only 7" records** |
Semaphore and
Overarm Position |
3 sizes, random order |
Yes |
If overarm
position used* |
Only 7" records** |
Semaphore and
Swinging Feeler |
3 sizes, random order |
Yes |
Only 7" records* |
Only 7" records** |
3-Size Arm Scan and
Size Override Control |
3 sizes, Larger records must be below smaller records |
Yes |
If override
control used* |
If next record
is same size** |
Semaphore and
Index Arm |
12" & 10" random order,
7" last |
No |
No |
10" & 7" if next
record same size ** |
Semaphore and
Index Arm (5 size) |
12" & 10" random order,
9", 8", 7", larger below smaller |
No |
No |
10", 9", 8" & 7" if next
record same size ** |
Pickup Arm scan
and Index Arm |
12" to 6", Larger records must be below smaller, 33 below 45 |
no |
no |
If next record
is same size** |
| |
* Provided that the record dropping and/or auto shutoff mechanisms can be persuaded to repeat records.
** Provided that the record dropping mechanism is capable of dropping the disc.
Do not use repeat discs with a record dropping mechanism that pushes the rim of the record. It could break
the record on top of the disc.
The exact range of sizes provided depends on the design of the individual model.
| COMPANIES USING SIZE SENSING METHODS |
| |
| GROUP |
METHOD |
COMPANIES |
NO
SENSOR |
Size
Switch |
Many, including Admiral, BSR, Collaro, Dual, GE, Glenburn, Maestro, Magnavox, Miracord, Panasonic,
Philips, RCA, Seeburg, Technics, VM, Zenith |
Speed and
Size Switch |
Admiral, BIC, BSR, Dual, Garrard, Miracord, PE, Philips, RCA, Technics, VM |
Record Shelf
Position |
Many, including Admiral, Aero, Belmont, Bendix, Emerson, Markel, Milwaukee-Erwood, Motorola, Philco,
Philips, RCA, Seeburg, Webster, VM, Zenith |
Spindle
Selected Size |
Milwaukee-Erwood |
|
METHOD |
COMPANIES |
TURNTABLE
SENSOR |
Rising
Feelers |
Admiral, PE, Philco, Philips |
Swinging
Feeler |
Capehart, Philips |
Hole Size
Feeler |
Magnavox, Philips |
3-Size Turntable
Arm Scan |
Philips |
|
METHOD |
COMPANIES |
DROP
SENSOR |
Droplever
|
BSR, Collaro, Crescent, Lesa, Panasonic, Philips, RCA, Silvertone, Supraphon, Universal Camera |
Tilting
Feeler |
Balfour, Collaro, Farnsworth, GE, Glaser-Steers, Philips, Silvertone, VM, Webster, Zenith |
Semaphore
|
Garrard, PE, Silvertone, Webster |
|
METHOD |
COMPANIES |
STACK
SENSOR |
Index
Arm |
Garrard, Webster, Zenith |
3-Size
Arm Scan |
Collaro, Magnavox, Miracord, Philips |
Pickup
Arm Scan |
BSR, Collaro, Magnavox, Triotrack |
|
METHOD |
COMPANIES |
SEPARATE
RECORD
SENSOR |
Pickup Arm Scan
on Lowered Record |
PE, VM |
Pickup Arm Scan
on Separated Record |
Lincoln, Thorens |
Feeler
Wheels |
Dual, Luxor |
Record Underside
3-Size Scan |
Triotrack |
Record
Underside Scan |
Miracord |
Shelf Bottom
Record Sensor |
Aga, B&O, Dual, Garrard, Philips, Thorens, Webster |
|
METHOD |
COMPANIES |
COMBINED
METHODS |
Size Switch and
Tilting Feeler |
Collaro, Philips, Thorens |
Speed-Size Switch
and Droplever |
Miracord, Webster, VM |
Rising Feeler and
Tilting Feeler |
Admiral, BSR, RCA, Telefunken, VM |
Droplever and
Size Override Control |
Philips, Supraphon |
Rising & Tilting Feeler
and Overarm Position |
Modified RCA |
Tilting Feeler and
Overarm Position |
Glaser Steers |
Semaphore and
Overarm Position |
Modified Garrard |
Semaphore and
Swinging Feeler |
Dual |
3-Size Arm Scan and
Size Override Control |
Miracord |
Semaphore and
Index Arm |
Garrard, Wumo |
Semaphore and
Index Arm (5 size) |
Garrard |
Pickup Arm scan
and Index Arm |
Modified Collaro |
| |
The letters in various model numbers usually mean "record changer" in various
languages.
