Instruction/ maintenance manual of the product 32-2054 Roberts Radio
Go to page of 20
Thank you for purchasi ng the RadioShack 40W AC/DC PA Amplifier. It gives you the versati lity and power you need in a professional sound sys tem. Your amplifi er’s wide frequen cy response ea sily handles a mpli ficatio n of voice and musi c.
2 Microp hone Rotary Volume Controls - lets you adjust the microphone level (see Page 15) . Rota ry MASTER Volume Control - lets you adjust the overall sound level ( See Page 15 ) . On/Off Rocker Switch with LED Indicator - lights to indicate power is turned on ( See Page 15) .
3 Ground Scr ew - connect the ground wire (black or green) to this screw to avoid low-frequency hum. Mix Bus Jack - connects extra amplifier for multiple audio source ( See Page 7) . AC IN - supports other music instrument/amplifier power with maximum load of 100W ( See Page 14) .
Preparation 4 24 '2 #4#6 + 10 2 .#%+ 0) 6 *' # /2.+(+'4 Before yo u use y our am plifie r, be su re to pla ce it o n a loc ation with adeq uate ventil ation. Do not put i t on thick c arpeti ng (whic h can res trict a ir flow) o r near a heat so urce, suc h as a he at vent or r adiato r (which can ca use it to over heat).
Connections 5 2TGUGVVKPIVJG#WFKQ+PRWV5QWTEGU Set the a udio i nput s ources’ c ontrol s to th ese l evels. 2TGUGVVKPIVJG#ORNKHKGT Warn in g: To prevent poss ible hearing lo ss, set the amplifi er’s con trols to th e settings shown below.
6 Connections %QPPGEVKPI/KETQRJQ PGU You can connect one dy namic m icrophone (not sup plied) to MIC 1 and an other to MIC 2 using a 1/4” (6.3 5 mm) plug. %QPPGEVKPIC6WTPVCDNG You can connect a low level au dio in put sourc e, such a s a magne tic cartri dge turntab le, to the ampl ifie r’s L and R PHONO jac ks.
Connections 7 %QPPGEVKPIVJG/+:$75,CEM You can conne ct another MP-40 amplifier to this jack (sho w n on pa ge 3) to double th e size o f your PA syste m. This l ets you u se up to f our microp hones and two turntables (or two auxiliari es) sound sources .
8 Connections Important: If you are c onnecting more than two speake rs in seri es only or paral l el only, be su re the total im pedan ce does n ot exceed the a m plif ier’s maxim um impe dance (16 ohms) or fall be low the minim um imped ance (4 oh ms).
Connections 9 % 100'%6+0) 1 0' 5 2'#-'4 Connect t he speak er’s negativ e (-) termin al to th e ampl ifie r’s COM terminal. The n, connec t the speake r’s posi tive (+) term inal to th e speaker terminal (4 Ω , 8 Ω , or 16 Ω ) that matc hes the speake r’s impedance .
10 Connections Follow these s teps to connect speakers in s eries. 1. Connect t he first s peaker ’s p ositive terminal t o the othe r speaker’s negativ e terminal. 2. Connect the first s peaker’s negati ve termi nal to the amp lifier ’s COM termi nal .
Connections 11 Follow these s teps to co nnect two spe akers in para lle l. 1. Connect b oth spea ker ’s n egative (-) terminals to each other . Then, connec t both wires to the ampl ifie r ’s COM termi nal . 2. Conne ct both sp eaker s’ positi ve (+) term inals to each other .
12 Connections 3. C onnec t each pair of spea kers in paral lel. If you co nnected 8-ohm s peakers, the tot al impeda nce of both p airs is 8 ohms (16 /2 = 8). 4. Connect the s peake rs’ negative (-) t ermina ls to the amp lifier ’s COM termi nal .
Connections 13 Transform ers allo w you to: • connec t speake rs with dif ferent imp edances withou t causi ng output diffe rences between the speake rs. • add or remove a speake r from the s ystem withou t having to recalculate t he entire system ’s i mpedanc e.
14 Connections %10 0'%6+ 0)2 19'4 To conn ect the am plifier to power, p lug the fem ale end of th e supplied A C power co rd into the ampl ifie r’s AC IN jack and the ot her end to a ny standard AC outle t. Note: The wires labeled with an A are connected to each other .
15 Operation Operation % 100'%6+0) 6 *' &%8+0, #%- To pow er the amp lifier from your veh icle’s 1 2V battery, plug the suppli ed DC pow er ca ble’s ba rrel plug to the DC 12V IN ja ck, and th en co nnect the other end to yo ur vehicl e’s 12V accessory socke t, such a s a cigar ette-lighter so cket.
Troubleshooting 16 • Put the headp hones on, and t hen gradually incr ease the v olume to your d esired li stening lev el. • Do not listen at extrem ely high volume level s . Extended high-vol ume listening can lead to permane nt hearing loss. • Once y ou set th e volume, do no t incre ase it.
Care 17 %#4' • Keep the ampl ifier dry ; if it ge ts wet, wip e it dry imme diat ely . • Use and s tore th e amplifi er only in ro om tempera t ure env iro nm ent s.
Specifications 18 52' %+( +% # 6 +1 0 5 Output Power at THD 10%, 4-Ohm Load 1 kHz ....... 40W T otal Harmonic Distortion (at 5 W atts, 4 ohms, 1 kHz, with Band Pass Filter) MIC...... ........ ....... .......... ........ ....... .......... .......
19 #%%'551 4+' 5 The follo wing ac cessorie s are avail able at you r local R adioShack store. To lo cate your ne ares t R adi oSha ck , u se th e s to re l oc ato r fe atu re on RadioSha ck ’ s website (www.radioshack.com), or cal l 1-800-The Shack (843-7422) and follow the me nu options .
32-2054 01A04 Printed in China Limited O ne-Y ear W arranty This pr odu ct is warran ted by R ad ioS hac k ag ains t manu fact uri n g d efe cts in m ate ri al and w or kma n- shi p unde r norma l use for on e (1) year from the d ate of pu rchase f rom Ra dioSha ck comp any- owned sto res and auth orized R adioSha ck franchi sees and d ealers.
An important point after buying a device Roberts Radio 32-2054 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Roberts Radio 32-2054 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Roberts Radio 32-2054 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Roberts Radio 32-2054 you will learn all the available features of the product, as well as information on its operation. The information that you get Roberts Radio 32-2054 will certainly help you make a decision on the purchase.
If you already are a holder of Roberts Radio 32-2054, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Roberts Radio 32-2054.
However, one of the most important roles played by the user manual is to help in solving problems with Roberts Radio 32-2054. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Roberts Radio 32-2054 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
