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17

Problem

Solution

• No Sound Only from Subwoofer

Troubleshooting

• Check the subwoofer's volume setting and 

all connections. If your receiver has a 

subwoofer on/off or variable subwoofer 

output level control, ensure that the 

subwoofer option it is turned on and that 

the output level is at maximum. 

• Make sure that the subwoofer's RCA 

cable is connected to the receiver's 

subwoofer output and not the subwoofer 

input jack.  

• Too Little Bass

• Too Much Bass

• Check: subwoofer volume / frequency / 

phase control positions; receiver tone 

controls; program material; ensure that 

the center channel mode on the receiver 

is in the NORMAL or SMALL position. If 

your receiver has a variable subwoofer 

output level control, ensure that the 

output level is at maximum. 

• Try moving the subwoofer further into a 

corner or towards the wall.

• Try to separate phono cables from power 

cords (they can induce hum into the 

system). If that doesn't work, we 

recommend you turn off your subwoofer 

when it is not in use. This is most easily 

accomplished connecting its power cord 

to a switched power outlet on the back of 

your receiver. 

• Check for faulty phono connecting cable. 

• Check: subwoofer volume / frequency / 

phase control positions; receiver bass / 

loudness controls; program material; 

move subwoofer further out of corner or 

away from wall.

• Hum

Summary of Contents for SUB-1500

Page 1: ...e Crossover for Variable Low pass Filtering Low level RCA High level MDP Inputs Outputs Dual port Enclosure for Efficient Release of Acoustic Energy and Thermal Build up Small Footprint Design and Rec...

Page 2: ...other appliances including amplifiers that produce heat 10 Power Sources The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on t...

Page 3: ...1728 Curtiss Court La Verne CA 91750 Toll Free 800 678 5348 TEL 909 593 8893 FAX 909 593 8890 VocoPro Company Email Directory Customer Service General Information info vocopro com Tech Support techsu...

Page 4: ...al and leave it there Pay attention to the different levels in various recordings Taking a minute to do this now will help to prevent hearing damage or loss in the future After all we want you listeni...

Page 5: ...eatures SUB 1500 200W Powered Subwoofer 200 Watts of Powerful Low end Bass for Rich and Full spectrum Audio Experience 15 Long throw Coated Woofer for Great Sound and Durability Adjustable Crossover f...

Page 6: ...buse This may result in an electrical shock or fire hazard 4 AC Outlet Overloaded AC outlets and extension cords are dangerous as well as frayed cords and broken plugs Avoid compounding these situatio...

Page 7: ...ngs to remember All the safety and operating instructions should be read before the appliance is installed and operated The life span of your purchase can depend on how well you take care of it 2 Dama...

Page 8: ...nts until you find an optimum location General acoustical guidelines to be kept in mind Every acoustic space is unique and experimentation is an important key in finding the best possible location in...

Page 9: ...e systems we are NOT talking about RF type interference but rather acoustic interference or the direct sonic radiation mixed with reflections from adjacent surfaces especially floors rear walls and si...

Page 10: ...se uneven from place to place in your room To experience with this yourself put on a CD with a strong consistent bass line Notice how the volume of the bass goes up and down as you move around the roo...

Page 11: ...with Boomy Sound Medium High Bass Ouput with Smoother Sound ROOM ROOM Lower Bass Output with Smoothest Sound Symmetrical Placement Avoid putting the SUB 1500 the same distance from two walls For examp...

Page 12: ...e proper position read on The quickest way to place your SUB 1500 is to wire it up and place it in your favorite listening position or the position where you ll be listening most of the time For a sma...

Page 13: ...ce of these connections putting more of a strain on your receivers amplifier Things to Consider Before Making the Connection The Connection Methods There are a number of methods to connect your SUB 15...

Page 14: ...email technical support if the outputs on your main amplifier do not have true ground Connecting to a Device with No Pre amp Outputs Benefit RCA audio cables are less expensive that MDP cables This is...

Page 15: ...th respect to the main speakers If the subwoofer is out of phase with the main speakers bass response is at a reduced performance level and may sound weak When all speakers are in phase full frequency...

Page 16: ...e should be most audible in the mid bass If you cannot detect a difference leave the PHASE switch in the in phase position see Advanced Operations for more on phase Adjust the SUB 1500 s CROSSOVER and...

Page 17: ...You will want to have a person with you to help with testing as it makes things much easier First have one person sitting close to the SUB 1500 making the adjustments connections and the other person...

Page 18: ...nsure that the center channel mode on the receiver is in the NORMAL or SMALL position If your receiver has a variable subwoofer output level control ensure that the output level is at maximum Try movi...

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