Fender SPL-6000 User Manual
Power Amplifiers
From Fender Pro Audio
Owner's Manual for
SPL-6000
P/N 038866
SPL-6000
INTRODUCTION
OWNER'S MANUAL
SPL-6000
TWO CHANNEL POWER AMPLIFIER
Your new Fender SPL-6000 Power Amplifier is
designed to provide you with years of trouble-free
service for both permanent and portable applications. Utilizing a unique proprietary cross coupled
protection system, the SPL-6000 delivers more
power into multiple loudspeakers than more conventional approaches for VI, current limiting and
load fuses. Other features include silent delayed
turn-on and off, triac "crowbar" loudspeaker protection, full input/output connector compliment, and
a rugged "Road-Proof" 14 gauge steel chassis construction.
AMPLIFIER OPERATION
This procedure applies to stereo, mono, or bridged operation into a full-range loudspeaker system which uses a passive high-level crossover (or none at all). If you are using
the SPL-6000 in a multi-amplifier system with an electronic
or low-level passive crossover, the INPUT LEVEL controls
on the amplifier are generally set to maximum (zero loss),
and all level controlling is done at the crossover (skip step
10):
1. Turn all equipment OFF.
2. Plug the amplifier into a power source.
3. Connect the wiring from the signal source(s) to the
amplifier's input jack(s).
In order to thoroughly understand the operation,
features and functions of your power amplifier,
please read and refer, as needed, to this owner's
manual. By doing so, your amplifier is sure to provide you with years of trouble-free service.
9. Turn the amplifier ON.
10. Adjust the INPUT LEVEL control(s) to maximum.
Carefully advance the master control on your signal source
until the sound level from the speaker is just past the "correct" level; i.e. just a little bit too loud. Remove the input
signal from the source, leaving the master control ( and
any input controls on the source) set as they were. If the
system is noisy (hissy), reduce the setting of the INPUT
LEVEL control(s) slightly and repeat this step. You must
"juggle" the settings of the source's controls until you find
a combination that gives you the desired amplifier output,
freedom from clipping caused by excessive output
demands placed on signal source, and poor signal-tonoise performance caused by excessive amplifier gain.
4. Select the appropriate settings for the MODE switches.
5. Connect the speaker(s) to the output terminals, as
appropriate for the setting of the MODE switch.
6. Adjust the INPUT LEVEL controls to their minimum
(infinity) setting.
7. Turn everything else ON except the amplifier.
8. Adjust the controls on the signal source for "normal"
indications on the source's meter or level indicator. If
there is no metering, then set the master control at zero
(minimum).
WARNING:
- To reduce the risk of fire or shock hazzard, do not
expose this amplifier to rain or moisture.
- No user serviceable parts inside, refer
servicing to qualified personnel only.
- This amplifier must be earth grounded.
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DESCRIPTION OF FEATURES
OFF
PEAK
LIMIT
ON
LEFT •CHANNEL A
A
B
MIN
MAX
C
PROFESSIONAL STEREO POWER AMPLIFIER
OFF
PEAK
ON
C
LIMIT
MAX
RIGHT•CHANNEL B
B
MIN
SPL 6000
A
POWER
D
ELECTRONICS
D
1. FRONT PANEL
A - PEAK LED INDICATOR
The red Peak LED Indicator illuminates when the output voltage of the amplifier reaches clipping (maximum output voltage). The threshold for the peak indicator automatically
adjusts for load impedance and supply voltage variations.
B - LIMIT SWITCHES
The Limit Switch is used to defeat the internal compressor circuits.
C - INPUT LEVEL CONTROLS
Two continuously variable attenuators control the amplifier's input sensitivity. Control settings can vary between
zero attenuation (maximum clockwise rotation) and infinite
attenuation (maximum counterclockwise rotation). At the
full clockwise rotation, a +1.8 dBV input signal is required
for rated output. Each gain control is independent except
for the Mono Bridge mode where Channel A is the active
control and the Channel B control is inactive. Refer to the
Amplifier Operation section for additional information on
proper adjustment of the input level controls.
D - POWER LED INDICATOR AND SWITCH
2. REAR PANEL
E & F - OUTPUT CONNECTORS
Each channel is provided with a single 1/4" phone jack (E)
and a pair of five-way binding posts (F) which will
accommodate a single pair of dual banana plugs (multiple
stacked banana plugs are not recommended as they
tend to fall out), spade lugs or bare wire. If the speaker
wire is terminated with spade lugs, make sure that the
lugs are tin or gold plated brass or copper, not plated
steel. Non-linear contact resistance phenomena will
degrade the sonic integrity of any amplifier at the speaker/amplifier interface. The Channel A and Channel B
outputs are spaced on 0.75 inch (19 mm) centers so that
one "double banana plug" can be used for bridged
operation. During performance verification measurements,
use the five-way binding posts only.
CAUTION:
Do not operate the amplifier in the two channel
(stereo) mode with a load impedance of less than
4 Ω connected to either channel.
Do not operate the amplifier in the Bridged Mode
with a load impedance of less than 8 Ω.
The power switch turns the unit on and off. To turn the
unit on, push the power switch to the right. The LED is
illuminated when the amplifier is turned on and main voltage is present. If this indicator does not light when the
power switch is turned on (and does not trip the circuit
breaker), then check the AC power supply.
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