Powered SubwooferBU2
BU2 TEST PROCEDURE
TEST PROCEDURE7.Turnongeneratorandadjustsothatspeakerleveloutput
is 2.0V, 50 Hz. Turn VOLUME control full clockwise.
Equipment needed:8.GreenLEDshouldlight,immediatebassresponseshould
be heard and felt from port tube opening.
Function/signalgenerator/sweepgenerator
IntegratedAmplifier
Sweep Function
Multimeter
1.Followsteps1-4above,usingasweepgeneratorasa
Cables-linelevel(RCA)andspeakercablessignal source.
General FunctionUUT = Unit Under Test2.Sweepgeneratorfrom20Hzto300Hz.Listentothe
cabinet and drivers for any rattles, clicks, buzzes or any
1.Connectbothrightandleftlinelevelinputs(RCA)to
other noises. If any unusual noises are heard, remove driver
signal generator and UUT. Use Y-cable if necessary fromand test.
mono source. VOLUME control should be full
counterclockwise.
Driver Function
2.Turnongenerator,adjustto50mV,50Hz.
1.Removedriverfromcabinet;detach+and-wireclips.
3.PluginUUT;redLEDshouldbeON.TurnVOLUME
control full clockwise.2.CheckDCresistanceofdriver;itshouldbe3.3ohms.
4.LEDshouldturnGreen;immediatebassresponseshould3.Connectapairofspeakercablestodriverterminals.
be heard and felt from port tube opening.Cables should be connected to an integrated amplifier fed by
a signal generator. Turn on generator and adjust so that
5.Turnoffgenerator,turnVOLUMEcontrolfullyspeaker level output is 5.0V.
counterclockwise, disconnect RCA cables.
4.Sweepgeneratorfrom20Hzto1kHz.Listentodriverfor
6.Connectonepairofspeakercablestoeitherhighlevelany rubbing, buzzing, or other unusual noises.
input terminal on UUT. Cables should be connected to an
integrated amplifier fed by the signal generator.
3 |
ACEC
