DD-8 Power Ampliers
Operation Manual2
Important Safety InStructIonS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance
with the manufacturer’s instructio ns.
8. Do not install near any heat sources such as radiator s, heat
registers, stoves, or other apparatus (inclu ding ampliers) that
produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-
type plug. A polarized plug has t wo blades with one wider than
the other. A grounding-type plug has two b lades and a third
grounding prong. The wide blade or the thi rd prong is provided
for your safety. If the provided plug does n ot t into your outlet,
consult an electrician for replacement of th e obsolete outlet.
10. Protect the power cord from being wa lked on or pinched,
particularly at plugs, convenience recepta cles, and the point
where they exit from the apparatus.
11. Only use attachments/accessories specified by the
manufacturer.
12. Use only with a cart, stand, tripod , bracket, or
table specified by the manufac turer, or sold with the
apparatus. When a cart is used, use cau tion when
moving the cart/apparatus combination to avoid injury
from tip-over.
13. Unplug this appar atus during lightning storms or when unused
for long periods of time.
14. Refer all ser vicing to qualied service personne l. Servicing is
required when the apparatus has been damaged in any way,
such as power-supply cord or plug is damaged, liquid has b een
spilled or objects have fallen into the app aratus, the apparatus
has been exposed to rain or moisture, do es not operate
normally, or has been dropped.
15. Use the mains plug to disco nnect the apparatus from the ma ins.
16. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK ,
DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
17. D O NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR
SPLASHING AND ENSURE THAT NO OBJECTS FILLED
WITH LIQUIDS, SUCH AS VASES, ARE PLACED ON THE
EQUIPMENT.
18. THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN
READILY OPERABLE.
TO PREVENT ELECTRIC SHOCK DO NOT REMOV E TOP OR
BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM
THE AC MAINS, DISCONNECT THE POWER SUPPLY CORD
PLUG FROM THE AC RECEPTACLE. THE MAINS PLUG OF
THE POWER SUPPLY CORD SHALL REMAIN READILY
OPERABLE.

WATCH FOR THESE SYMBOLS:

The lightning bolt triangle is used to aler t the user to the
risk of electric shock.
The exclamation point triangle is used to aler t the user to
important operating or maintenance ins tructions.

IMPORTANT

DD-8 ampliers require Class 2 output wiring.

MAGNETIC FIELD

CAUTION! Do not loc ate sensitive high-gain equipment such
as preamplifiers or tape decks d irectly above or below the unit.
Because this amplifier has a high power de nsity, it has a strong
magnetic eld which can induce hum into unshielde d devices that
are located nearby. The eld is strongest just above and b elow the
unit.
If an equipment rack is used, we recommend loca ting the
amplier(s) in the bottom of the rack and the preamp lier or other
sensitive equipment at the top.