User manual PEAVEY IMPULSE 1015P

[. . . ] For more information on other great Peavey products, go to your local Peavey dealer or online at www. Intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. CAUTION: To reduce the risk of electric shock, do not remove cover. WARNING: To prevent electrical shock or fire hazard, do not expose this appliance to rain or moisture. [. . . ] Make sure the AC line cord is plugged into a working AC outlet and check the circuit breaker (1) {see the REAR PANEL/Circuit Breaker section for safety instructions}. Then, make sure the Impulse 1015P's inputs are getting a signal by running a the cable from the inputs to some other device capable of determining this (for example, a power amp and speaker). If there is still no output, then be sure the volume control has been turned up to a reasonable level (one-third to halfway). Turn off the unit and cool as best as the situation allows (DO NOT use liquids for this purpose!If there is still no output, it may help to read the owner's manual completely. Hum or Buzz As this can be AC outlet-related, try plugging the Impulse 1015P into a different AC outlet. Sometimes, if the mixer and the Impulse 1015P, are plugged into different circuits (breakers) it can cause hum problems. Make sure the microphone input (8) is disengaged if not in use, by checking the Mic On switch (7). Check to make sure that shielded cables have been used to get the signal to the Impulse 1015P's inputs. Speaker cables with 1/4" or XLR plugs are very prone to hum. Check to make sure light dimmers are not on the same circuit as the Impulse 1015P or the mixer (or any source devices). If light dimmers are in use, then it may be necessary to turn them full on or full off to eliminate or reduce hum to tolerable levels. This is an AC wiring/light dimmer interference problem, and not the fault of the Impulse 1015P. The third wire ground plug on the AC plug should NEVER be removed or broken off, as this seriously compromises safety. Distorted or Fuzzy Sound First, make sure the mixer (or signal source) is not clipping or being overdriven. This can sometimes occur when the Volume control (6) on the Impulse 1015P has been set too low (too far counterclockwise), and it takes a lot of signal to drive the unit to full power. Make sure the input plugs are fully seated in the input jacks (5) on the rear panel of the Impulse 1015P. Check to see that the proper inputs are being used (5) for line-level signals, not the mic input (8). Make sure that a power amp has not been plugged into the input jacks of the Impulse 1015P. If an extension cord is being used to provide AC power to the unit, is it of sufficient current capacity and not also being used to supply power to any other units?Bass boost and HF EQ have been applied, and the system has a nominally flat response, so it should require little, if any, additional EQ. if excessive additional bass boost or HF boost have been added externally to the Impulse 1015P , it may cause premature overload at high SPLs. [. . . ] The unit's horn is spatially aligned with the woofer, so there is no need for phase alignment or time delay of the signals. Crossover slopes: 18 dB/octave (third order) low pass, 18 dB/octave (third order) high pass, both with staggered poles and driver EQ Electronic input impedance (nominal): 10 k Ohms unbalanced, 20 k Ohms balanced Input connections: One combo female XLR and 1/4" phone jack and one male XLR providing balanced operation in parallel. Also has a 1/4" phone jack-based Loop-Thru that allows other Impulse 1015P units to be linked to a single unit for signal source and volume control. contour switch: Reduces mid-range by approximately 4 dB , from 300 Hz to 2 kHz. [. . . ]