JBL Studio 690 is a 2-way Passive Bass Reflex Floor-standing speaker  by JBL.  It features a 1" compression driver with HDI (High Definition Imaging) waveguide Tweeter and 2 x 8" PolyPlas Woofer.  The speaker has a frequency range of 36-40k Hz and a sensitivity of 90 dB. JBL Studio 690 has an MSRP of 1498$ per pair. 
         Room Size Suitability  
    The size of the room where you plan to use the JBL Studio 690 is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:
    
        
            
                
                
                    | Listening Environment* | 
                    Suitability | 
                
                
                
                | Near-field | Bad | 
                | Small Room | Poor | 
                | Mid-size Room | Average | 
                | Large Room | Good | 
                | Very Large Room | Average | 
                
            
         
     
    
        (* Approximate Room sizes: Small < 100sq. ft / 9 m2, Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: > 400 sq. ft / 36 m2.
       Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual listening experience changes depending on floor height, room shape, surface materials, listening position, speaker locations, etc.)
    
JBL's  Studio Series of Loudspeakers
Studio 690 is a member of JBL's Studio series of Passive speakers.  Below you can see the main specs of these speakers. 
    
        
        JBL Studio Series Speakers
        
     
                                
                                    
                                    
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                                     Frequency Response of the JBL Studio 690 Speaker
JBL Studio 690 has a  Frequency response range of 36-40k Hz at ±3dB and Power Range of up to 250 watts. With a minimum frequency of 36 Hz, Studio 690 delivers deep bass that will likely satisfy most listeners, especially those who enjoy music. However, movie enthusiasts and music fans who prefer a full range of sound may still benefit from adding a subwoofer.
 To focus on the subwoofers that are in a similar price range with JBL Studio 690, check out the Powered Subwoofers under $1500. Alternatively, find the Full list of Powered Subwoofers regardless of the price.
Here we have a comparison of how Studio 690's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
    
        Low Frequency
        Floor-standing Speakers
        
        
        
        
     
    
        High Frequency
        Floor-standing Speakers
        
        
        
        
     
 
    
    
    
           Among the speakers in our database with a max MSRP price of 1500$ (Pair),  these are the 5 Passive Floor-standing speakers that have the deeper bass levels than the JBL Studio 690's 36Hz:
        
    
        
        
 
    
 Impedance and Sensitivity
JBL Studio 690's nominal impedance level is 
6 ohms  and has a sensitivity of 
90 dB.     
    
        Sensitivity
        Floor-standing Speakers
        
        
        
        
     
 
    
    
 
         Nominal Impedance of the 6 Ohms makes the JBL Studio 690 a relatively difficult to drive speaker compared to more frequently found 8 ohms speakers from nominal Impedance perspective. 
Sensitivity
90dB of the JBL Studio 690 is an average sensitivity for stereo speaker so it is neither easy nor difficult to drive Sensitivity wise.      
Check the amplifiers that are in a similar price range to the JBL Studio 690:
 Input Type
Studio 690 has 5-Way post  type connectors and lets bi-amping/bi-wiring. Bi-wiring can enhance the overall transparency of your loudspeakers by using separate speaker wires for the low and high-frequency drivers from a single amplifier. Bi-amping, on the other hand, involves using separate amplifiers for the high and low-frequency drivers, potentially resulting in a greater dynamic range and reduced distortion. 
            
                
                
                    
                        JBL Studio 690 Back View                    
                
            
JBL Studio 690  External Dimensions and Weight
JBL Studio 690 has  external dimensions of (Height x Width x Depth) 43-1/8-inch x 11-3/4-inch x 15-1/16-inch (1096.0 x 299.0 x 383.0mm ). 
    Base Surface Area
    Base surface area of a loudspeaker may become a  determining factor when the space in your room or desk is limited.
    The base area of JBL Studio 690 is approximately 1145.2cm2 / 177.5inch2. 
            
			
			To get a better perspective on the real life size of JBL Studio 690, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm). 			
                
                
                    
                        JBL Studio 690 Speaker Size Compared to a Compact Disc                    
                
            
    
        Here we place the JBL Studio 690 virtually next to  a standard width amplifier and turntable on a media center to get a better idea about the size.     
    
        
        
            JBL Studio 690 Floor-standing Speaker next to a Media Stand        
    
    
WeightThe JBL Studio 690 weighs 29.45kg / 64.8lbs per piece. Here is a comparison of how Studio 690's weight compares with the average, max and min weights in its class.
    
        Weight
        All Floor-standing Speakers
        
        
        
        
     
    
        
            Weight
            Floor-standing Speakers under $1500
            
            
            
            
         
    
 
 Cabinet type and Materials
JBL Studio 690 has a 
Bass Reflex type cabinet and a MDF/Wood-grain vinyl finish. Bass Reflex type loudspeakers  (aka  Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.
    
 Speaker Feet
JBL Studio 690 comes with 
4 Spike feet which you can use to secure your loudspeaker on the surface that you are putting on.  It is always recommended to use some kind of feet under all types of speakers. Besides limiting the movement of the speakers, it also compensates for non-flat surfaces and limits the contact surface area of the speaker. Rubber based feet also help isolating the vibrations within certain frequency ranges.
    
 Port Position
    JBL Studio 690 is a rear-firing port speaker  so you have to make sure you leave enough space between the back of the speaker and wall or bookshelf so that it has room to breathe.     
 
    
 Available colors
    JBL Studio 690 is available in Wood and  Dark Wood.     
    
 Does the JBL Studio 690 come with a Grille?
    Studio 690 comes with  grilles.  The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible.    
    
        
        
            JBL Studio 690  with Grille        
    
    
    
 What's in the Box of JBL Studio 690? 
    Here are the items that are included inside the box of Studio 690: 
    
Floorstanding loudspeakerGrille4 Spike feet4 Washers4 Locking-collars4 Foot-pads2 Jumper-straps (pre-installed)Owners ManualWarranty Card    
    
    
 Recommended Accessories
 Here is a list of accessories that we think you may need for the JBL Studio 690.
     Official Product Page
    Official manufacturer's product page for the JBL Studio 690 speaker can be found below:
    
Official Product Page for JBL Studio 690 
    
     Warranty
    5 Years of parts warranty and  5 Years of labor warranty is generally provided by the manufacturer.