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     STEP VARIABLE ATTENUATOR

TYPE P2550 / P2560 Series
Au-plated contact materials (Low contact resistance).
22 or 21positions (0dB - Cut off or Max.attenuation).
Used a highly precise resistor.
25mm square (Body)
Rear terminal
Last update: 2024.02.29. [Electrical-spec] [Mechanical-spec] [Note] [Dimensions] [Model-number] EU-RoHS


Information
 

Electrical specifications TYPE P2550/P2560 Series
Products *P2551*-* *P2552*-* *P25*3*-* *P25*4*-* *P25*5*-* *P25*6*-* *P25*7*-* *P25*8*-*
Attenuation [Load: High] BTS-50dB 2dB x20 1dB x20 0.5dB x20
Circuit method Potentiometer circuit
Total resistance (1-C) 1kohm, 7kohm, 10kohm, 100kohm
Total resistance tolerance ±3%
Attenuation  accuracy
 [Load: High]
±0.3dB
Max attenuation [Load: High] 50dB ±0.6dB 40dB ±0.6dB 20dB ±0.6dB 10dB ±0.6dB
Cut off [15kHz] 80dB Min. - 80dB Min. - 80dB Min. - 80dB Min. -
Insertion loss 0.3dB or less
Frequency range (DC to Max) DC to 20kHz
Voltage proof 1 Min. at AC500V
Insulation resistance 100Mohm or more at DC500V
Input level Max. 0.1W
Rotational life 30,000 Cycles Min. (18cycles/min, Insertion loss: 1dB or less)
* BTS-50dB      0, 2, 4, ...(2dB step)... , 30, 32, 34, 37, 42, 50, Cut off
* [Load: high]    The output side load should be used with high impedance (20 times or more than the total resistance value).

Mechanical specifications TYPE P2550/P2560 Series
Operating angle
 
With cut off : 315 degrees ±2 degrees
Without cut off : 300 degrees ±2 degrees
Step angle 15 degrees
Strength Nut-Attached 50Ncm
Attached parts Hexagonal nut (M9)
Stopper strength 50Ncm
Push-pull strangth 50N


General specifications TYPE P2550/P2560 Series
Temperature range -10 to +70 degrees C (Operating), -15 to +75 degrees C (Storage)
Relative humidity 90%RH (No condensation)

Note
* Solder heat resistance: 350deg C max, 5sec max, 2 times. (Manual soldering only)
* Special order of the shaft length is possible. Please contact us for details.
* It is highly recommended that the fault tolerant system is to be set up in the big situation like the live broadcast.
* Replacing it from other brands tests it enough, and please consider.
* This product is an attenuator of the types to change resistance.
   Therefore, a switching noise may occur.

Dimensions - *P25***-*
P2550 / P2560  


Dimensions - Terminations

Model number
P25 5 1 S - 10K - 6R 22
*1 *2 *3 *4   *5   *6 *7


*1 Product number P25 : TYPE P2550/P2560 Series
*2
 
Direction of attenuation
 
5 : CCW
6 : CW (“BTS-50dB Eis not selectable.)
*3






 
Attenuation types and Cut off






 
1 : BTS-50dB, With Cut off
2 : BTS-50dB, Without Cut off
3 : 2dB x20, With Cut off
4 : 2dB x20, Without Cut off
5 : 1dB x20, With Cut off
6 : 1dB x20, Without Cut off
7 : 0.5dB x20, With Cut off
8 : 0.5dB x20, Without Cut off
*4
 
Mechanical click option
 
Blank : Without click
S        : With click (15degrees step)
*5


 
Total resistance


 
1K     : 1kohm
7K     : 7kohm
10K   : 10kohm
100K : 100kohm
*6 Shaft types 6R     : Φ6 Round Standard
*7


 
Shaft length
(Length from mounting surface to shaft end)

 
20 : 20mm Standard (* Only "6R20" can be omitted.)
22 : 22mm
25 : 25mm
30 : 30mm


  Lineups (Click on "Attenuation type x Number of circuit")


Products No.
( X: Standerd model)
Number of
circuits
Max
attenuation
Attenuation
types
Total
resistance
Total number
of steps
Cut off Direction of
attenuation
Click
P2551S-1K X 1 50dB BTS-50dB 1kohm 21 With CCW With
P2552S-1K X 1 50dB BTS-50dB 1kohm 20 Without CCW With
P2551-1K X 1 50dB BTS-50dB 1kohm 21 With CCW Without
P2552-1K X 1 50dB BTS-50dB 1kohm 20 Without CCW Without
P2551S-7K   1 50dB BTS-50dB 7kohm 21 With CCW With
P2552S-7K   1 50dB BTS-50dB 7kohm 20 Without CCW With
P2551-7K   1 50dB BTS-50dB 7kohm 21 With CCW Without
P2552-7K   1 50dB BTS-50dB 7kohm 20 Without CCW Without
P2551-10K X 1 50dB BTS-50dB 10kohm 21 With CCW Without
P2552-10K X 1 50dB BTS-50dB 10kohm 20 Without CCW Without
P2551S-10K X 1 50dB BTS-50dB 10kohm 21 With CCW With
P2552S-10K X 1 50dB BTS-50dB 10kohm 20 Without CCW With
P2551-100K X 1 50dB BTS-50dB 100kohm 21 With CCW Without
P2552-100K X 1 50dB BTS-50dB 100kohm 20 Without CCW Without
P2551S-100K X 1 50dB BTS-50dB 100kohm 21 With CCW With
P2552S-100K X 1 50dB BTS-50dB 100kohm 20 Without CCW With

Products No.
( X: Standerd model)
Number of
circuits
Max
attenuation
Attenuation
types
Total
resistance
Total number
of steps
Cut off Direction of
attenuation
Click
P2553S-1K   1 40dB 2dB x20 1kohm 21 With CCW With
P2554S-1K   1 40dB 2dB x20 1kohm 20 Without CCW With
P2563S-1K   1 40dB 2dB x20 1kohm 21 With CW With
P2564S-1K   1 40dB 2dB x20 1kohm 20 Without CW With
P2553-1K   1 40dB 2dB x20 1kohm 21 With CCW Without
P2554-1K   1 40dB 2dB x20 1kohm 20 Without CCW Without
P2563-1K   1 40dB 2dB x20 1kohm 21 With CW Without
P2564-1K   1 40dB 2dB x20 1kohm 20 Without CW Without
P2553S-7K   1 40dB 2dB x20 7kohm 21 With CCW With
P2554S-7K   1 40dB 2dB x20 7kohm 20 Without CCW With
P2563S-7K   1 40dB 2dB x20 7kohm 21 With CW With
P2564S-7K   1 40dB 2dB x20 7kohm 20 Without CW With
P2553-7K   1 40dB 2dB x20 7kohm 21 With CCW Without
P2554-7K   1 40dB 2dB x20 7kohm 20 Without CCW Without
P2563-7K   1 40dB 2dB x20 7kohm 21 With CW Without
P2564-7K   1 40dB 2dB x20 7kohm 20 Without CW Without
P2553S-10K   1 40dB 2dB x20 10kohm 21 With CCW With
P2554S-10K   1 40dB 2dB x20 10kohm 20 Without CCW With
P2563S-10K   1 40dB 2dB x20 10kohm 21 With CW With
P2564S-10K   1 40dB 2dB x20 10kohm 20 Without CW With
P2553-10K   1 40dB 2dB x20 10kohm 21 With CCW Without
P2554-10K   1 40dB 2dB x20 10kohm 20 Without CCW Without
P2563-10K   1 40dB 2dB x20 10kohm 21 With CW Without
P2564-10K   1 40dB 2dB x20 10kohm 20 Without CW Without
P2553S-100K   1 40dB 2dB x20 100kohm 21 With CCW With
P2554S-100K   1 40dB 2dB x20 100kohm 20 Without CCW With
P2563S-100K   1 40dB 2dB x20 100kohm 21 With CW With
P2564S-100K   1 40dB 2dB x20 100kohm 20 Without CW With
P2553-100K   1 40dB 2dB x20 100kohm 21 With CCW Without
P2554-100K   1 40dB 2dB x20 100kohm 20 Without CCW Without
P2563-100K   1 40dB 2dB x20 100kohm 21 With CW Without
P2564-100K   1 40dB 2dB x20 100kohm 20 Without CW Without

Products No.
( X: Standerd model)
Number of
circuits
Max
attenuation
Attenuation
types
Total
resistance
Total number
of steps
Cut off Direction of
attenuation
Click
P2555S-1K   1 20dB 1dB x20 1kohm 21 With CCW With
P2556S-1K   1 20dB 1dB x20 1kohm 20 Without CCW With
P2565S-1K   1 20dB 1dB x20 1kohm 21 With CW With
P2566S-1K   1 20dB 1dB x20 1kohm 20 Without CW With
P2555-1K   1 20dB 1dB x20 1kohm 21 With CCW Without
P2556-1K   1 20dB 1dB x20 1kohm 20 Without CCW Without
P2565-1K   1 20dB 1dB x20 1kohm 21 With CW Without
P2566-1K   1 20dB 1dB x20 1kohm 20 Without CW Without
P2555S-7K   1 20dB 1dB x20 7kohm 21 With CCW With
P2556S-7K   1 20dB 1dB x20 7kohm 20 Without CCW With
P2565S-7K   1 20dB 1dB x20 7kohm 21 With CW With
P2566S-7K   1 20dB 1dB x20 7kohm 20 Without CW With
P2555-7K   1 20dB 1dB x20 7kohm 21 With CCW Without
P2556-7K   1 20dB 1dB x20 7kohm 20 Without CCW Without
P2565-7K   1 20dB 1dB x20 7kohm 21 With CW Without
P2566-7K   1 20dB 1dB x20 7kohm 20 Without CW Without
P2555S-10K   1 20dB 1dB x20 10kohm 21 With CCW With
P2556S-10K   1 20dB 1dB x20 10kohm 20 Without CCW With
P2565S-10K   1 20dB 1dB x20 10kohm 21 With CW With
P2566S-10K   1 20dB 1dB x20 10kohm 20 Without CW With
P2555-10K   1 20dB 1dB x20 10kohm 21 With CCW Without
P2556-10K   1 20dB 1dB x20 10kohm 20 Without CCW Without
P2565-10K   1 20dB 1dB x20 10kohm 21 With CW Without
P2566-10K   1 20dB 1dB x20 10kohm 20 Without CW Without
P2555-100K   1 20dB 1dB x20 100kohm 21 With CCW Without
P2556-100K   1 20dB 1dB x20 100kohm 20 Without CCW Without
P2555S-100K   1 20dB 1dB x20 100kohm 21 With CCW With
P2556S-100K   1 20dB 1dB x20 100kohm 20 Without CCW With
P2565S-100K   1 20dB 1dB x20 100kohm 21 With CW With
P2566S-100K   1 20dB 1dB x20 100kohm 20 Without CW With
P2565-100K   1 20dB 1dB x20 100kohm 21 With CW Without
P2566-100K   1 20dB 1dB x20 100kohm 20 Without CW Without

Products No.
( X: Standerd model)
Number of
circuits
Max
attenuation
Attenuation
types
Total
resistance
Total number
of steps
Cut off Direction of
attenuation
Click
P2557S-1K   1 10dB 0.5dB x20 1kohm 21 With CCW With
P2558S-1K   1 10dB 0.5dB x20 1kohm 20 Without CCW With
P2567S-1K   1 10dB 0.5dB x20 1kohm 21 With CW With
P2568S-1K   1 10dB 0.5dB x20 1kohm 20 Without CW With
P2557-1K   1 10dB 0.5dB x20 1kohm 21 With CCW Without
P2558-1K   1 10dB 0.5dB x20 1kohm 20 Without CCW Without
P2567-1K   1 10dB 0.5dB x20 1kohm 21 With CW Without
P2568-1K   1 10dB 0.5dB x20 1kohm 20 Without CW Without
P2557S-7K   1 10dB 0.5dB x20 7kohm 21 With CCW With
P2558S-7K   1 10dB 0.5dB x20 7kohm 20 Without CCW With
P2567S-7K   1 10dB 0.5dB x20 7kohm 21 With CW With
P2568S-7K   1 10dB 0.5dB x20 7kohm 20 Without CW With
P2557-7K   1 10dB 0.5dB x20 7kohm 21 With CCW Without
P2558-7K   1 10dB 0.5dB x20 7kohm 20 Without CCW Without
P2567-7K   1 10dB 0.5dB x20 7kohm 21 With CW Without
P2568-7K   1 10dB 0.5dB x20 7kohm 20 Without CW Without
P2557S-10K   1 10dB 0.5dB x20 10kohm 21 With CCW With
P2558S-10K   1 10dB 0.5dB x20 10kohm 20 Without CCW With
P2567S-10K   1 10dB 0.5dB x20 10kohm 21 With CW With
P2568S-10K   1 10dB 0.5dB x20 10kohm 20 Without CW With
P2557-10K   1 10dB 0.5dB x20 10kohm 21 With CCW Without
P2558-10K   1 10dB 0.5dB x20 10kohm 20 Without CCW Without
P2567-10K   1 10dB 0.5dB x20 10kohm 21 With CW Without
P2568-10K   1 10dB 0.5dB x20 10kohm 20 Without CW Without
P2557S-100K   1 10dB 0.5dB x20 100kohm 21 With CCW With
P2558S-100K   1 10dB 0.5dB x20 100kohm 20 Without CCW With
P2567S-100K   1 10dB 0.5dB x20 100kohm 21 With CW With
P2568S-100K   1 10dB 0.5dB x20 100kohm 20 Without CW With
P2557-100K   1 10dB 0.5dB x20 100kohm 21 With CCW Without
P2558-100K   1 10dB 0.5dB x20 100kohm 20 Without CCW Without
P2567-100K   1 10dB 0.5dB x20 100kohm 21 With CW Without
P2568-100K   1 10dB 0.5dB x20 100kohm 20 Without CW Without




Update list
   
2024.02.29. Added standard shaft length.
2023.03.22. First edition