User Manual

V-4B Bass Guitar Amplifier
8
The Rear Panel continued...
21. 2OHMS: The two 2 Ω speaker output
jacks are wired in parallel. Use a single
jack when using one 2 Ω speaker
cabinet. Use both speaker jacks when
using two 4 Ω speaker cabinets. If you
have four 8 Ω cabinets with parallel
speaker jacks, you can link all four
8 Ω cabinets in a
parallel wiring
configuration, totaling a 2 Ω load.
4 OHMS
USE WITH ONE 2 OHM CABINET
OR TWO 4 OHM CABINETS
USE WITH ONE 4 OHM CABINET
OR TWO 8 OHM CABINETS
2 OHMS 8 OHMS4 OHMS2 OHMS
BALANCED
OUT
SLAVE
OUT
POWER AMP
IN
PREAMP
OUT
AC LINE IN
GND
LIFT
SPEAKERS-100W @ SELECTED IMPEDANCE - CLASS 2 WIRING
POWERAMP
PREAMP
TUBE
COMPLEMENT:
6L6 6L6 6L6
12AU7 12AX7 12AX712AX7
6L6
MODEL
V-4B
AVIS: N'OUVREZ PAS LA COUVERTURE. N'EXPOSEZ PAS CET ÉQUIPEMENT À
LA PLUIE OU À L'HUMIDITÉ.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE
THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER. NO USER
SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
AVIS : RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR.
CAUTION
RISK OF ELECTRICAL SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE
RISK OF FIRE, REPLACE FUSE WITH
THE SAME TYPE AND RATING.
ATTENTION: UTILISER UN
FUSIBLE DE RECHANGE DE MEME
TYPE.
FOR 100V-120V :T4A H 250V
FUSE:
FOR 220V-240V :T2A H 250V
POWER CONSUMPTION 100W
14 15 16 17 18 19 20 21 22 23
22. 4OHMS: The two 4 Ω speaker
output jacks are wired in parallel. Use a
single jack when using one 4 Ω speaker
cabinet. Use both speaker jacks when
using two 8 Ω speaker cabinets.
23. 8OHMS: The 8 Ω speaker output jack
is designated for 8 Ω speaker cabinets
only.
WARNING! Never turn on or use the amplifier without a load or speaker connected to the amplifier.
ALWAYS use a good quality (non-shielded) speaker cable. Never use (shielded) instrument cable.
ALWAYS match the amplifier’s speaker output impedance to the impedance of the speaker
that is being used. Use only one type impedance output at a time. If more than one speaker is
connected at the same time, make sure they all have the same impedance rating. Never use
two or more cabinets with different impedance ratings. This will create an unbalanced load.
When using multiple speaker cabinets (with the same impedance rating), match the total load
impedance of the speaker cabinets to the speaker output of the amplifier.
SPEAKER CABINET IMPEDANCE divided by NUMBER OF CABINETS = TOTAL IMPEDANCE
8 Ω cabs / 2 cabs = 4 Ω impedance. For this application use the 4 Ω output jacks.
8 Ω cab / 1 cab = 8 Ω impedance. For this application use the 8 Ω speaker jack.
4 Ω cabs / 2 cabs = 2 Ω impedance. For this application use the 2 Ω output jacks.
4 Ω cab / 1 cab = 4 Ω impedance. For this application use the 4 Ω speaker jack.
2 Ω cabs / 1 cab = 2 Ω impedance. For this application use the 2 Ω output jack.