541757

Ampeg PF350 Handleiding

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Owner’s Manual
PF-350
PF-500
& PF-800
Bass Guitar Amplifiers
thresh
peak
mute
input
-15dB ultra lo
mute ultra hi
gaincompression bass midrange frequency treble volumefx mix
31 2 4 5
0 100 100 100 100 100 100 10
PF 500
audio
in
phones
fault
input
pad
-15dB
bassgain midrange treble volume
limiter
audio
in
phones
PF 350
peak
limit
0 100 100 100 100 10
fault
thresh
peak
mute
input
-15dB ultra lo
mute ultra hi
gaincompression bass midrange frequency treble volumefx mix
31 2 4 5
0 100 100 100 100 100 100 10
PF 800
audio
in
phones
fault
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
2
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 instructions.
8. Do not install near any heat sources such as
radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the
polarized or grounding-type plug. A polarized plug
has two blades with one wider than the other. A
grounding-type plug has two blades and a third
grounding prong. The wide blade or the third
prong are provided for your safety. If the provided
plug does not fit into your outlet, consult an
electrician for replacement of the obsolete outlet.
10.
Protect the power cord from being walked
on or pinched particularly at plugs, convenience
receptacles, 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 manufacturer, or sold with
the apparatus. When a cart is used,
use caution when moving the cart/
apparatus combination to avoid
injury from tip-over.
13.
Unplug this apparatus during lightning storms
or when unused for long periods of time.
14.
Refer all servicing to qualified service
personnel. Servicing is required when the
apparatus has been damaged in any way, such as
IMPORTANT SAFETY INSTRUCTIONS
power-supply cord or plug is damaged, liquid has
been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or
has been dropped.
15.
Do not overload wall outlets and extension
cords as this can result in a risk of fire or electric
shock.
16.
This apparatus shall not be exposed to
dripping or splashing, and no object filled with
liquids, such as vases or beer glasses, shall be
placed on the apparatus.
17.
This apparatus has been designed with Class-I
construction and must be connected to a mains
socket outlet with a protective earthing connection
(the third grounding prong).
18.
The MAINS plug or an appliance coupler is
used as the disconnect device, so the disconnect
device shall remain readily operable.
19.
For the terminals marked with symbol of “ ”
may be of sufficient magnitude to constitute a risk
of electric shock. The external wiring
connected to the terminals requires installation by
an instructed person or the used of ready-made
leads or cords.
CAUTION AVIS
RISK OF ELECTRIC SHOCK. DO NOT OPEN
RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK)
NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL
ATTENTION: POUR EVITER LES RISQUES DE CHOC ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE.
AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER.
CONFIER L'ENTRETIEN AU PERSONNEL QUALIFIE.
AVIS: POUR EVITER LES RISQUES D'INCENDIE OU D'ELECTROCUTION, N'EXPOSEZ PA S CET ARTICLE
A LA PLUIE OU A L'HUMIDITE
The lightning flash with arrowhead symbol within an equilateral triangle is
intended to alert the user to the presence of uninsulated "dangerous
voltage" within the product's enclosure, that may be of sufficient magnitude
to constitute a risk of electric shock to persons.
Le symbole éclair avec point de flèche à l'intérieur d'un triangle équilatéral
est utilisé pour alerter l'utilisateur de la présence à l'intérieur du coffret de
"voltage dangereux" non isolé d'ampleur suffisante pour constituer un risque
d'éléctrocution.
The exclamation point within an equilateral triangle is intended to alert the
user of the presence of important operating and maintenance (servicing)
instructions in the literature accompanying the appliance.
Le point d'exclamation à l'intérieur d'un triangle équilatéral est employé
pour alerter les utilisateurs de la présence d'instructions importantes pour le
fonctionnement et l'entretien (service) dans le livret d'instruction
accompagnant l'appareil.
PORTABLE CART
WARNING
TABLE OF CONTENTS
Important Safety Instructions .................................................2
Introduction ..........................................................................4
PF-350 ............................................................................5-10
(Front/Rear Panel, Block Diagram, Tech Specs, Service Info)
PF-500 / PF-800 ............................................................ 11-17
(Front/Rear Panel, Block Diagram, Tech Specs, Service Info)
Fault/Thermal Considerations ..............................................18
WARNING — To reduce the risk of fire or electric shock, do not
expose this apparatus to rain or moisture.
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
3
CONSIGNES DE SECURITE IMPORTANTES
- LIRE, SUIVRE TOUTES LES INSTRUCTIONS ET LES PRECAUTIONS D’UTILISATION
- NE PAS UTILISER PROCHE D’UNE SOURCE DE CHALEUR ET NE PAS BLOQUER OU OBSTRUER LE SYSTEME DE VENTILATION SUR CET APPAREIL. POUR UNE
UTILISATION CONFORME, CET APPAREIL NECESSITE ENVIRON 7CM D’ESPACE BIEN VENTILE AUTOUR DE SON SYSTEME DE REFROIDISSEMENT, AINSI QU’UN COURANT
D’AIR FRAIS CONSTANT
- NE PAS UTILISER CET APPAREIL PROCHE D’UNE SOURCE LIQUIDE
- NETTOYER SEULEMENT A L’AIDE D’UN CHIFFON DOUX ET SEC ET NE PAS UTILISER DE PRODUITS MENAGERS
- CONNECTER UNIQUEMENT LE CABLE D’ALIMENTATION FOURNI SUR UNE PRISE AVEC MISE A LA TERRE, ET COMPATIBLE AVEC LA TENSION, L’INTENSITE ET LA
FREQUENCE REQUISES INDIQUEES SUR LA FACE ARRIERE DE L’APPAREIL
- S’ASSURER DE NE PAS MARCHER, PLIER OU TIRER SUR LE CABLE D’ALIMENTATION
- DEBRANCHER L’APPAREIL LORS D’UNE TEMPETE OU LORS D’UNE TRES LONGUE PERIODE DE NON UTILISATION
- UTILISER UNIQUEMENT DES ACCESSOIRES SPECIFIES PAR LE FABRICANT POUR UNE UTILISATION EN TOUTE SECURITE ET POUR EVITER DES BLESSURES
- ATTENTION: AFIN DE PREVENIR TOUT RISQUE DE CHOCS ELECTRIQUES OU DE DEBUT D’INCENDIE, NE PAS EXPOSER CET APPAREIL A LA PLUIE ET A L’HUMIDITE
- TOUT ENTRETIEN DOIT ETRE FAIT PAR UN TECHNICIEN QUALIFIE
- NOS AMPLIFICATEURS PEUVENT PRODUIRE DE TRES HAUTES PRESSIONS ACOUSTIQUES QUI PEUVENT CAUSER DES DOMMAGES AUDITIFS PERMANENTS OU
DEFINITIFS. L’UTILISER AVEC UNE GRANDE PRECAUTION EST CONSEILLE ET DES PROTECTIONS AUDITIVES SONT RECOMMANDEES POUR UNE UTILISATION A FORT
VOLUME.
- ATTENTION: CET APPAREIL REQUIERT UNE PRISE MURALE AVEC MISE A LA TERRE, AUX NORMES ACTUELLES ET COMPATIBLE AVEC LES SPECIFICATIONS
ELECTRIQUES SE TROUVANT EN FACE ARRIERE DE L’APPAREIL. LA PRISE ELECTRIQUE DOIT RESTER ACCESSIBLE POUR DEBRANCHER L’APPAREIL EN CAS DE DEFAUT
PENDANT L’UTILISATION
- CET APPAREIL DOIT ETRE DEBRANCHE SI IL N’EST PAS UTILISE
Elimination correcte du produit : Ce symbole indique que ce produit ne doit pas être éliminé avec les ordures ménagères, comme le prévoiT la directive WEEE (2002/96/
EC) et votre loi nationale.
Ce produit doit être remis à un site de recyclage des déchets électriques et des équipements électroniques (EEE).
Un mauvais recyclage de ce type de déchet peut avoir de possibles impacts négatifs sur l’environnement et la santé humaine dus aux émanations de substances.
Dans un même temps, votre coopération à un recyclage correct de ce produit contribuera à la bonne utilisation des ressources naturelles.
Pour connaître l’endroit où il est possible de recycler ces équipements, merci de contacter votre mairie, les services de recyclages ou le service des déchets ménagers.
NOTE: This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation.
This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruc-
tions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interfer-
ence to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Reorientorrelocatethereceivingantenna.
• Increasetheseparationbetweentheequipmentandthe
receiver.
• Connecttheequipmentintoanoutletonacircuitdifferent
from that to which the receiver is connected.
• Consultthedealeroranexperiencedradio/TVtechnicianfor
help.
CAUTION: Changes or modifications to this device not expressly
approved by LOUD Technologies Inc. could void the user's authority
to operate the equipment under FCC rules.
This apparatus does not exceed the Class A/Class B (whichever
is applicable)
limits for radio noise emissions from digital appara-
tus as
set out in the radio interference regulations of the Canadian
Department
of Communications.
ATTENTION — Le présent appareil numérique n’émet pas de
bruits radioélectriques dépassant las limites applicables aux appa-
reils numériques de class A/de class B (selon le cas) prescrites
dans le réglement sur le brouillage radioélectrique édicté par les
ministere des communications du Canada.
Exposure to extremely high noise levels may cause permanent
hearing loss. Individuals vary considerably in susceptibility to noise-
induced hearing loss, but nearly everyone will lose some hearing
if exposed to sufficiently intense noise for a period of time. The
U.S. Government’s Occupational Safety and Health Administration
(OSHA) has specified the permissible noise level exposures shown
in the following chart.
According to OSHA, any exposure in excess of these per-
missible limits could result in some hearing loss. To ensure against
potentially dangerous exposure to high sound pressure levels, it is
recommended that all persons exposed to equipment capable of
producing high sound pressure levels use hearing protectors while
the equipment is in operation. Ear plugs or protectors in the ear
canals or over the ears must be worn when operating the equip-
ment in order to prevent permanent hearing loss if exposure is in
excess of the limits set forth here:
Correct disposal of this product: This symbol indicates that this product should not be disposed of with your household waste,
according to the WEEE directive (2002/96/EC) and your national law. This product should be handed over to an authorized col-
lection site for recycling waste electrical and electronic equipment (EEE). Improper handling of this type of waste could have a
possible negative impact on the environment and human health due to potentially hazardous substances that are generally asso-
ciated with EEE. At the same time, your cooperation in the correct disposal of this product will contribute to the effective usage
of natural resources. For more information about where you can drop off your waste equipment for recycling, please contact your
local city office, waste authority, or your household waste disposal service.
Duration, per
day in hours
Sound
Level dBA, Slow
Response
Typical Example
8 90 Duo in small club
6 92
4 95 Subway Train
3 97
2 100 Very loud classical music
1.5 102
1 105 The boss screaming at his minions about
manual deadlines
0.5 110
0.25 or less 115 Loudest parts at a rock concert
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
4
Introduction
Portable. Powerful. Sexy. Ampeg designed and built the original Portaflex Series over 50
years ago. Congratulations are in order – for today, in your hands, is the new-and-improved
Portaflex!
Featuring Class-D power and knobs galore, these beasts pack a mean punch with a wide
variety of tones at your disposal. Also, the switching power supply keeps the weight low,
without sacrificing power output or our legendary sound quality.
Don’t stop now! Your Portaflex amplifier is an ideal companion to the Ampeg PF-115HE,
PF-115LF, PF-210HE, or PF-410HLF cabinet, available separately.
Like all Ampeg products, your Portaflex amplifier is designed by musicians and built using
only the best of components. Each amplifier is tested to confirm that it meets our
specifications, and we believe that this amplifier is the absolute best that it can be.
In order to get the most out of your new amplifier, please read this manual before you begin
playing.
And thank you for choosing Ampeg.
Here are some of the features packed into
your new PF-350 Amplifier:
• Selectable-15dBinputpad
• Gaincontrol
• Bass,Mid,andTreblecontrols
• Mastervolumecontrol
• SelectableLimiterandLED[PF-350only]
• PeakLED
• Stereo1/8"auxiliaryinput
• Headphoneoutput
• Effectsloopwithseparatesendand
return jacks
• BalancedXLRlineoutput
• Lightweightandfan-cooledswitching
power supply
• Voltageselectorswitch
• Class-Dpoweramplifierratedat
350wattsrmsinto4ohms[PF-350]
The PF-500 and PF-800 Amplifier have the
same features as the PF-350, as well as the
following:
• DualJFETpreamp
• Muteswitch
• Dual-functionmuteandpeakLED
• On-boardvariablecompressor
• UltraLoandUltraHiswitches
• 5-wayMidrangeFrequencycontrol
• FXMixcontrol
• Tuneroutput
• PreampOutandPowerAmpInjacks
• Footswitchjack
• SingleSpeakon&1/4"speakeroutput
jacks
• Class-Dpoweramplifierratedat
500wattsrmsinto4ohms[PF-500]
• Class-Dpoweramplifierratedat
800wattsrmsinto4ohms[PF-800]
• XLRLineOutfeatures:
•Pre/PostEQ
•–40dBpad(mic/linelevel)
•Groundlift
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
5
PF-350 Front Panel
1. INPUT: The signal output from an
instrument (active or passive) may be
connectedtothis1/4"inputbymeans
of a shielded instrument cable.
2. –15 dB PAD: Press this switch in to
reduce the input signal by 15 dB and
compensate for higher output sources.
This attenuation is suited for use with
basses that have active electronics or
high-output pickups. Use this pad if you
noticethatthepeakLED[3]comeson
regularly. It will reduce the chance of
overdriving the preamplifier stage, and
allow more usable range and fine
adjustment of the gain control.
3. PEAK LED: This red warning LED will
come on if: the input signal is too high,
the gain control is set too high, or there
is too much boost from the bass,
midrange and treble controls. If it comes
on regularly, even when these controls
are low, try engaging the –15 dB
pad[2].
4. GAIN: This varies the amount of signal
driving the preamplifier. If a small
clockwise rotation from minimum leads
to overloading and the peak LED
illuminating, try engaging the –15 dB
pad. This will give more usable range
with the gain control.
5. BASS: Use this to adjust the low
frequency level of the amplifier. This
provides up to 14 dB of boost, or
–12 dB of cut at 40 Hz. The low
frequency output is flattest at the center
position.
6. MIDRANGE: Use this to adjust the
midrange frequency level of the
amplifier. This provides up to 5 dB of
boost, or –13 dB of cut at 500 Hz. The
midrange frequency output is flat at the
center position. Rotate the control
counter clockwise for a “contoured”
sound (more distant, less midrange
output) or clockwise for a sound which
really cuts through.
7. TREBLE: Use this to adjust the high
frequency level of the amplifier. This
provides up to 19 dB of boost, or
–25 dB of cut at 8 kHz. The high
frequency output is flattest at the center
position.
8. VOLUME: Use this to control the
overall output level. It affects the
speaker outputs and preamp level to the
headphone output. Use it wisely, and
turn it down when making connections,
putting on headphones, or trying
something new.
13121110987654321
input
pad
-15dB
bassgain midrange treble volume
limiter
audio
in
phones
PF 350
peak
limit
0 100 100 100 100 10
fault
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
6
9. LIMIT LED: This LED illuminates when
the limiter circuit is activated, indicating
that the amplifier is nearing full output
and the limiter is keeping peak signals
from clipping the output.
10. LIMITER SWITCH: Press this switch in
to add the limiter circuit. If the signals
driving the amplifier start to peak, the
limiter will automatically reduce the
signals to prevent clipping, and the
LED[9]willflash.Thelimiterwillhelp
keep the amplifier’s output “clean” up to
high output levels and avoid potentially
damaging distortion.
11. FAULT LED: This LED illuminates amber
if the amp thermals and shuts down or
develops other fault conditions. See
“Fault/Thermal Considerations” on page
18 for more information.
12. AUDIO IN: The audio output from line-
level sources, such as an iPod
®
, MP3,
or CD player, can connect to this
1/8"TRSstereoinput.Theincoming
audio is mixed with the preamp signals,
so you can play along to a practice
track as you listen with headphones.
(The audio coming in here only plays in
the headphones, and appears nowhere
else. It is not affected by the volume
control.)
13. PHONES:Usethis1/8"TRSstereo
output to connect your headphones.
The output here is a mix of the line-level
signals reaching the amplifier, and any
incoming audio from the audio in
jack[12].
If you just want to listen and practice
through headphones, disconnect the
speaker-leveloutputs[18]fromthe
speaker cabinet. There is no harm in
playing the PF-350 without speakers.
Before putting on headphones, make
surethevolumecontrol[8]isturned
down, and (if connected) any external
audio source has its level turned down.
This will reduce the chance of hearing
damage due to loud volumes.
PF-350 Front Panel continued
13121110987654321
input
pad
-15dB
bassgain midrange treble volume
limiter
audio
in
phones
PF 350
peak
limit
0 100 100 100 100 10
fault
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
7
14. IEC POWER INPUT CONNECTOR: This
is where you connect the supplied AC
power cord.
Before plugging in the power cord, make
sure that the voltage selector switch
[15]issettothesamevoltageasyour
local AC mains.
15. VOLTAGE SELECTOR SWITCH:
Make sure the switch is in the correct
position for your local AC mains voltage
before you plug in the AC power cord.
Use a small flat screwdriver to slide the
switch if required.
16. POWER SWITCH: Use this switch to
turn the overall system power on or off.
Press the switch to the left to turn on
the power. Press the switch to the right
to put the amp into standby mode. It will
not function, but the circuits are still live.
To remove AC power, either turn off the
AC mains supply, or unplug the power
cord from the amplifier and the AC
mains supply.
17. VENTILATION: Make sure that the
ventilation openings are not obscured in
any way. This will allow the flow of
cooling air to the power
amplifier’s heatsinks. See “Fault/Thermal
Considerations” on page 18 for more
information.
18. SPEAKER OUTPUTS:These1/4"TS
output jacks supply speaker-level power
to the speaker cabinet. The rated power
output is 250 watts rms into 8 ohms or
350 watts rms into 4 ohms.
The two identical outputs are wired in
parallel, and you can use either one, or
use both. Make sure the total speaker
impedance load is 4 ohms or greater.
For example, you could connect:
Two 16 ohm speakers (an 8 ohm load),
Two 8 ohm speakers (a 4 ohm load)
or one 4 ohm speaker.
Usespeakercableswith1/4"TSends
to make the connections. Do not use
instrument cables as they may overheat.
19. XLR LINE OUT JACK: Typically, you
would connect this balanced output to
the balanced input of an external mixer,
or a recorder. In this way, you do not
have to mic the speaker cabinet in order
to add it to the main mix, or to record.
The output is not affected by the volume
control[8].
This output can connect to external
power amplifiers, or powered
loudspeakers, as long as they have their
own input controls to adjust the volume
level.
Balanced connections allow long cable
runs to be used, as hum and noise
pickup in the line is minimized.
14 15 16 17 18 18 19 20 21
250W rms @8
350W rms @4
speaker outputs XLR line out fx loop
return
send
power
PF 350
PF-350 Rear Panel
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
8
20. FX SEND JACK:Usethis1/4"TS
unbalanced output to send a line-level
output to an external effects processor
(for example). The output here is
affected by all controls except the
volume.
Use the FX return jack to feed the
returned processed signals back into the
power amplifier.
PF-350 Rear Panel continued
14 15 16 17 18 18 19 20 21
250W rms @8
350W rms @4
speaker outputs XLR line out fx loop
return
send
power
PF 350
21. FX RETURN JACK:Usethis1/4"TS
unbalanced input to return the
processed line-level output of an external
effects processor (for example). The
processor could be fed by signals from
the FX send.
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
9
PF-350 Block Diagram
15 dB PAD
PHONES
OUTPUT
POWER
AMPLIFIER
LEFT
RIGHT
VOLUME
SPEAKER
OUTPUTS
PREAMPLIFIER
PEAK DETECTOR
LIMITER
LIMIT
LED
RETURN
SEND
EFFECTS
LOOP
XLR BALANCED
LINE OUTPUT
BASSMIDRANGETREBLE
INPUT
GAIN
TONE CONTROLSTONE CONTROLS
AUDIO INPUT
(STEREO)
LEFT
RIGHT
PEAK
LED
PEAK
LED
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
10
Service Information
I
f you are having a problem with your PF-350, you can go to our website (www.ampeg.com)
and click on Support for service information, or call Technical Support at 1-800-898-3211
Monday-Friday during
normal business hours, PST
, to receive assistance. If you are outside of
the U.S., contact your local distributor for technical support and service.
PF-350 TECHNICAL SPECIFICATIONS
Output Power Rating 250 watts rms @ 8 ohms, 5% THD
350 watts rms @ 4 ohms, 5% THD
Signal to Noise Ratio 75 dB (20 Hz–20 kHz, unweighted)
Maximum Gain 64 dB, tone controls centered
Tone Controls Bass: +14/–12 dB @ 40 Hz
Midrange: +5/–13 dB @ 500 Hz
Treble: +19/–25 dB @ 8 kHz
Power Requirements ~100–120 VAC, 50–60 Hz, 100W
~200–240 VAC, 50–60 Hz, 100W
Size (H x W x D) 2.7 in / 69 mm x 10.8 in / 275 mm
x 10.7 in / 272 mm
Weight 7.8 lb/3.5 kg (approximately)
The PF-350 is covered with sheet metal, so be sure to clean with a dry lint-free cloth.
Never spray
cleaning agents on the PF-350. Avoid abrasive cleansers which would damage the finish.
Ampeg continually develops new products and improves upon existing ones. For this reason, the specifications
and information in this manual are subject to change without notice.
“Ampeg” is a registered trademark of LOUD Technologies Inc. All other brand names mentioned are trademarks
or registered trademarks of their respective holders and are hereby acknowledged.
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
11
PF-500 / PF-800 Front Panel
1. INPUT: The signal output from an
instrument (active or passive) may be
connectedtothis1/4"inputbymeans
of a shielded instrument cable.
2. PEAK/MUTE LED: This red warning
LEDwillcomeonif:themuteswitch[4]
is engaged, or if the input signal is too
high, the gain control is set too high, or
there is too much boost from the bass,
midrange and treble controls. If it comes
on regularly, even when these controls
are low, try engaging the –15 dB
pad[3].
3. –15 dB PAD: Press this switch in to
reduce the input signal by 15 dB and
compensate for higher output sources.
This attenuation is suited for use with
basses that have active electronics
or high-output pickups. Use this pad if
younoticethatthepeak/muteLED[2]
comes on regularly. It will reduce the
chance of overdriving the preamplifier
stage, and allow more usable range and
fine adjustment of the gain control.
4. MUTE: Press this switch in to mute the
signal.Thepeak/muteLED[2]will
illuminate when this switch is engaged.
5. THRESH LED: This illuminates when
the signal level is above the compressor
threshold and gain reduction is active.
6. COMPRESSION: This controls the
amount of signal compression. At the
fully counter-clockwise position, there is
no compression; at the fully
clockwise position, the compression
ratio is 10:1. The sonic effect of
compression is reduced dynamics,
increased sustain and a more consistent
output level regardless of how light or
hard the strings are played. The
compressor is very transparent - that is,
there is very little effect on the tone of
your instrument.
7. GAIN: This varies the amount of signal
driving the preamplifier. If a small
clockwise rotation from minimum leads
to overloading and the peak LED
illuminating, try engaging the –15 dB
pad. This will give more usable range
with the gain control.
8. ULTRA LO: This switch, when engaged,
enhances the amount of low-end output
by 2 dB at 40 Hz and –10 dB cut at
500 Hz.
9. ULTRA HI: This switch, when engaged,
enhances the amount of high frequency
output by 9 dB at 8 kHz.
10. BASS: Use this to adjust the low
frequency level of the amplifier. This
provides up to 12 dB of boost, or
–12 dB of cut at 40 Hz. The low
frequency output is flat at the center
position.
thresh
input
-15dB
ultra lo
mute ultra hi
gaincompression bass midrange frequency treble volumefx mix
peak
mute
31 2 4 5
audio
in
phones
PF 500
PF 800
0 100 100 100 100 100 10 0 10
fault
13 14 15 1716 18121110987654321
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
12
11. MIDRANGE: Use this to adjust the
midrange frequency level of the
amplifier. This provides up to 10 dB of
boost, or –20 dB of cut at the frequency
selected. The midrange frequency output
is flat at the center position. Rotate the
control counter clockwise for a
“contoured” sound (more distant, less
midrange output) or clockwise for a
sound which really cuts through.
12. FREQUENCY: This control allows you to
select the center frequency for the mid-
rangecontrol[11],givingyouachoice
of five “voices” for the midrange. The
numbers correspond to the following
center frequencies: 1=220 Hz, 2=450
Hz, 3=800 Hz, 4=1.6 kHz, 5=3 kHz.
13. TREBLE: Use this to adjust the high
frequency level of the amplifier. This
provides up to 15 dB of boost, or
–20 dB of cut at 4 kHz. The high
frequency output is flat at the center
position.
14. FX MIX: This control varies the mix
between the direct (dry) signal and the
effects (wet) when the effects loop is
used. Fully counter-clockwise results
in all direct signal (no effect) and fully
clockwise adds all effect with no direct
signal. The fully clockwise position is
equivalent to a series effects loop and
should be used with such devices as
limiters and equalizers.
15. VOLUME: Use this to control the
overall output level. It affects the preamp
level to speaker and phone outputs. Use
it wisely, and turn it down when making
connections, putting on headphones, or
trying something new.
16. FAULT LED: This LED illuminates amber
if the amp thermals and shuts down or
develops other fault conditions. See
“Fault/Thermal Considerations” on page
18 for more information.
17. AUDIO IN: The audio output from line-
level sources, such as an iPod
®
, MP3,
or CD player, can connect to this
1/8"TRSstereoinput.Theincoming
audio is mixed with the preamp signals,
so you can play along to a practice
track, as you listen with headphones.
(The audio coming in here only plays in
the headphones, and appears nowhere
else. It does not affect the signal fed to
the audio input.)
PF-500 / PF-800 Front Panel continued
thresh
input
-15dB
ultra lo
mute ultra hi
gaincompression bass midrange frequency treble volumefx mix
peak
mute
31 2 4 5
audio
in
phones
PF 500
PF 800
0 100 100 100 100 100 10 0 10
fault
13 14 15 1716 18121110987654321
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
13
PF-500 / PF-800 Front Panel continued
thresh
input
-15dB
ultra lo
mute ultra hi
gaincompression bass midrange frequency treble volumefx mix
peak
mute
31 2 4 5
audio
in
phones
PF 500
PF 800
0 100 100 100 100 100 10 0 10
fault
13 14 15 1716 18121110987654321
18. PHONES:Usethis1/8"TRSstereo
output to connect your headphones.
The output here is a mix of the line-level
signals reaching the amplifier, and any
incoming audio from the audio in
jack[17].
If you just want to listen and practice
through headphones, disconnect the
speaker-leveloutputs[23]fromthe
speaker cabinet. There is no harm in
playing the PF-500 / PF-800 without
speakers.
Before putting on headphones, make
surethevolumecontrol[15]isturned
down, and (if connected) any external
audio source has its level turned down.
This will reduce the chance of hearing
damage due to loud volumes.
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
14
19. IEC POWER INPUT CONNECTOR: This
is where you connect the supplied AC
power cord.
Before plugging in the power cord, make
sure that the voltage selector switch
[20]issettothesamevoltageasyour
local AC mains.
20. VOLTAGE SELECTOR SWITCH:
Make sure the switch is in the correct
position for your local AC mains voltage
before you plug in the AC power cord.
Use a small flat screwdriver to slide the
switch if required.
21. POWER SWITCH: Use this switch to
turn the overall system power on or off.
Press the switch to the left to turn on
the power. Press the switch to the right
to put the amp into standby mode. It will
not function, but the circuits are still live.
To remove AC power, either turn off the
AC mains supply, or unplug the power
cord from the amplifier and the AC
mains supply.
22. VENTILATION: Make sure that the
ventilation openings are not obscured in
any way. This will allow the flow of
cooling air to the power
amplifier’s heatsinks. See “Fault/Thermal
Considerations” on page 18 for more
information.
23. SPEAKER OUTPUTS: These individual
Speakon/1/4"TSoutputjackssupply
speaker-level power to the speaker
cabinet.
The rated power output of the PF-500
is 300 watts rms into 8 ohms or
500 watts rms into 4 ohms.
The rated power output of the PF-800
is 400 watts rms into 8 ohms or
800 watts rms into 4 ohms.
The two outputs are wired in parallel,
and you can use either one, or use both.
Make sure the total speaker impedance
load is 4 ohms or greater.
For example, you could connect:
Two 16 ohm speakers (an 8 ohm load),
Two 8 ohm speakers (a 4 ohm load)
or one 4 ohm speaker.
Use speaker cables with Speakon or
1/4"TSendstomaketheconnections.
Do not use instrument cables as they
may overheat.
24. XLR LINE OUT JACK: Typically, you
would connect this balanced output to
the balanced input of an external mixer,
or a recorder. In this way, you do not
have to mic the speaker cabinet in order
to add it to the main mix, or to record.
The output is not affected by the volume
control[15].
This output can connect to external
power amplifiers, or powered
loudspeakers, as long as they have their
own input controls to adjust the volume
level.
Balanced connections allow long cable
runs to be used, as hum and noise
pickup in the line is minimized.
PF-500 / PF-800 Rear Panel
19 20 21 22 23 23 24 2625 27 28
2930313233
XLR line
out
pre-EQ
post-EQ
300 W @ 8Ω 500W @ 4Ω MIN LOAD [PF-500]
400 W @ 8Ω 800W @ 4Ω MIN LOAD [PF-800]
send
return
tuner outpwr amp in pre amp out
patch
power
LIFT
GND
-40dB
0dB
ft switch
speaker outputs
CLASS 2 WIRING
fx loop
PF 800
PF 500
PF-350 / PF-500 / PF-800 Bass Guitar Amplifier
18
Fault/Thermal Considerations:
As an amplifier works, it produces heat.
The higher the signal level, the louder
and hotter it gets. It is important to
dissipate the heat as quickly as possible.
This results in increased reliability and
longevity for the amplifier.
The amplifier module is mounted on a
large heatsink, which is cooled by
convection where cool air is drawn
through its fins, carrying the heat away.
In order for this convection cooling to
work efficiently, it is important to provide
adequate airspace behind and to the
side or above the amplifier. When
positioning the Portaflex, we recommend
leaving at least six inches of air space
behind it.
In the unlikely event of the amplifier
overheating, a built-in fault switch will
activate, muting the signal and lighting
the thermal LED. When the amplifier has
cooled down to a safe operating
temperature, the fault switch resets
itself, and the Portaflex resumes normal
operation.
If the fault switch activates frequently, try
turning down the volume control a notch
or two to avoid overheating the
amplifier. Be aware that direct sunlight
and/or hot stage lights may be the
culprit of an amplifier overheating.
Flip-Top Instructions:
So you’ve made it this far and you are
now ready to flip your lid...or at least the
amp. We will instruct you on how to do
the latter, as we are not in the business
of lid-flipping!
It is accomplished in five simple steps:
Step 1: loosen the latches on each side
of the cabinet. There are two latches on
each side, four total.
Step 2: using the handle, lift the top of
the cabinet (amplifier is attached
underneath) and rotate it 180˚
clockwise (as indicated in the middle
drawing below).
Step 3: set the cabinet top handle-side
down on the top of the cabinet. The
amplifier should now be on the top, right-
side up, with the front of the amp and
the front of the cabinet facing the same
direction.
Step 4: line up and lock all four latches.
Step 5: rock out like there is no
tomorrow!
input
pad
-15dB
bassgain midrange treble volume
limiter
audio
in
phones
PF 350
peak
limit
0 100 100 100 100 10
on/
fault
input
pad
-15dB
bassgain midrange treble volume
limiter
audio
in
phones
PF 350
peak
limit
0 100 100 100 100 10
on/
fault
input
pad
-15dB
bass
gain midrange volume
limiter
audio
in
phones
PF 350
peak
limit
0 1010
0
10
0 10
on/
fault
www.ampeg.com
©2012 LOUD Technologies Inc.
16220 Wood-Red Road NE • Woodinville, WA 98072
Part No. SW0855 Rev. F 10/12
250W rms @8
350W rms @4
speaker outputs XLR line out fx loop
return
send
power
PF 350
XLR line
out
pre-EQ
post-EQ
300 W @ 8Ω 500W @ 4Ω MIN LOAD
send
return
tuner outpwr amp in pre amp out
patch
power
LIFT
GND
-40dB
0dB
ft switch
speaker outputs
CLASS 2 WIRING
fx loop
PF 500
XLR line
out
pre-EQ
post-EQ
400 W @ 8Ω 800W @ 4Ω MIN LOAD
send
return
tuner outpwr amp in pre amp out
patch
LIFT
GND
-40dB
0dB
ft switch
speaker outputs
CLASS 2 WIRING
fx loop
power
PF 800
Owner’s Manual
PF-350
PF-500
& PF-800
Bass Guitar Amplifiers
1 …

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