Square SP300A Operating Instructions Download Page 2

SP300A Square Perfect A Series Pro Flash

Thank you for your purchase of the SP300A Square Perfect A Series Pro 
Flash. This flash is a very high quality professional strobe that will give you 
years of service. It is perfect for commercial studios, location photogra-
phers as well as advanced amateurs. You can use this strobe for a main 
light, fill light, back light, or hair light. With the variable power setting you 

will have complete control over your light output. It is perfect for film or 
digital cameras. Please read this manual carefully before use, and keep it 
handy for use during break down of equipment. For ordering spare bulbs 
or replacement parts, contact us at [email protected]. Also check 
out our extended line of photo equipment now available. 

Power Input :    

AC120V/60 Hz

Flash Power :    

300ws (joule) in full

Guide No. :  

 

190ft/58m ISO100

Color Temperature :   5300K

Flash-tube Lifetime :  

over 10,000 typical flashing

Power Setting :   

1/8 to full continuously

Recharge Time :  

1.5 seconds in full

Flashing Duration :  

1/600 sec. @t=0.1; 1/1000 sec. @t=0.5

Modeling Power :  

Halogen 100W

Sync Voltage :    

6 Volt

Fuse :    

 

5A

Weight :  

 

7 Lb (3.175kg)

Triggering :  

 

Sync Cord/Test Button/ Wireless 

 

   Remote/Photocell

Will work with Bowen Speed Rings.

1. Make sure all switches are in the “OFF” position prior to use. Attach power cord into the Power Cord Port (12) in the 

 

   flash unit and plug other end of the cord into a grounded AC120V/60Hz wall outlet. 

 

   

NOTE: 

NEVER tamper with grounding pin or attempt to use the power cord if it has been altered. 

2. Turn the Main Power Switch (8) to the “ON” position. The green Power Indicator Light (9) will go on and the unit is now charging.
3. When the Recycle Indicator Light (3) turns on, you will hear a beep.  This indicates that the flash has charged to 70%.  

 

   The flash will be fully charged after hearing a second beep.

4. For continuous lighting that synchronizes with the flash power, adjust the Modeling Lamp Dial (2) to the desired power.  

 

   Turning the Modeling Continuous Lighting Switch upward in the ( - ) position gives continuous lighting that will change with 

 

   the flash power simultaneously.  For constant light, turn the Modeling Lamp Continuous Lighting Switch downward in the ( = ) 

 

   position.  This will maintain continuous light at full strength and will not change with the flash power.  To turn the Modeling 

 

   Lamp OFF, move the switch to the ( O ) position.

5. Use the built-in Photocell (7), Test Button (1) or Sync Port (11) to fire the flash. Get output from 1/8 to full power using 

 

   the Fully Variable Power Dial (10). 
6. To replace 5A fuse: MAKE SURE UNIT IS UNPLUGGED BEFORE OPENING SOCKET COVER. Push on the Fuse Cover (13) 

 

   to expose the fuse. Use tweezers to pull out the old fuse and insert new. Close cover when complete.

SPECIFICATIONS

OPERATING INSTRUCTIONS

1

5

10

9

8

7

12

13

11

6

3

2

4

Test Button

Fully Variable   

Power Dial

Main Power Switch

Power Indicator Light

Photocell

Buzzer

Power Cord Port

5A Fuse Cover

Sync Port

Light Inductor

Modeling Lamp Dial

Recycle Indicator Light

Modeling Lamp Continuous  

Lighting Switch

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www.squareperfect.com

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