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The amplifiers include

RCA inputs
High Level input
Variable low pass crossover (not RA25)
Variable high pass crossover
Grand bass feature 0 - +18 dB (not RA25)
Phase shift continously variabel 0-180 degr.
(not RA25)
Remote turn on / off
Automatic remote turn on/ off on high level
input without connecting any remote wire
Electronic protection circuitry against
short-circuit, DC offset and thermal overload.

Installation

Before you begin installation

Before you begin you need to read the manual, to have
some tools, cables and other material available. There
is one such list of material on the following page.

Amplifier location

 

Important

 

Allow air circulation around the amplifier.

2

Disconnect Battery

Before starting the instal-
lation, always disconnect
the negative terminal of
the battery.

The DLS Reference series of amplifiers have a
compact design that allows great flexibility in
mounting. You can mount it under a seat or in the
trunk.
When you select a location, do remember that the
amplifier generates a lot of heat.

Choose a location where air can circulate freely
around the amplifier. Do not cover the amplifier
with carpets or hide behind trim panels.
Do not mount the amplifier in an inverted or upside
down position.

Check all locations and placements carefully
before making any cuts, drilling any holes or ma-
king any connections.

This is the best way to
mount the amplifier to get
the best cooling.

RA25 & RA30

RA25

2 x 70 Watt RMS in 4 ohm
2 x 110 Watt RMS in 2 ohm
1 x 220 Watt RMS in bridge mode (4 ohm load)

RA30

2 x 70 Watt RMS in 4 ohm
2 x 100 Watt RMS in 2 ohm
1 x 265 Watt RMS on mono channel (4 ohm load)

All above RMS power ratings at 13,8 Volt DC

DLS logo on amplifier cooling flange

The DLS logo on top of the amplifier is attached
with two hex. screws. The logo can be removed
and twisted 90 or 180 degrees,  and then screwed
back in wanted position. The logo can be mounted
in four different ways to match your installation.

Содержание RA25

Страница 1: ...ered by warranty depending on the conditions in the country where it is sold If the amplifier is returned for service please include the original dated receipt with the product Technical Assistance For technical assistance ask the shop where the product was sold or the distributor in your very coun try You can always phone the DLS Helpdesk in Sweden 46 31 84 00 60 or send an e mail to info dls se ...

Страница 2: ...ibility in mounting You can mount it under a seat or in the trunk When you select a location do remember that the amplifier generates a lot of heat Choose a location where air can circulate freely around the amplifier Do not cover the amplifier with carpets or hide behind trim panels Do not mount the amplifier in an inverted or upside down position Check all locations and placements carefully befo...

Страница 3: ...er cable minimum AWG 5 16 mm2 or heavier 1 pc of fuseholder to install close to the car battery fuse 50 Ampere 20 feet of AWG 15 1 5 mm2 wire for remote turn on off cable from radio RCA cable for input from radio 20 feet or 5 meter for trunk installations 12 feet or 2 3 meter for under seat installations Two ring crimp terminals one for connection to the battery plus and one for the amplifier grou...

Страница 4: ...n on page 4 Sometimes a small disturbance may enter the amplifier coming from the remote voltage through the built in remote wire and into the RCA cable Thus we recommend to use a separate remote wire and run the RCA lead separate from remote wire power cables and speaker cables Insert the cable directly into the amplifier terminal If there is no remote voltage available from the ste reo you must ...

Страница 5: ...remote wire connected to the REMOTE terminal instead High Low level input switch Hi level auto start switch Low level input Use a pair of shielded stereo audio cables with RCA type jack Most trunk mount amplifiers need a 20 feet RCA cable appr 5 6 meters Most under the seat installations require 12 feet 2 3 meters RCA cables Avoid placing the RCA cable close to speaker cables power cables and remo...

Страница 6: ...Hz The filter can be switched IN OUT and is available on RA30 sub channel only 6 Play a tape or CD make sure all bass or treble settings or equalizer are flat and turn the volume of the radio up until you just start to hear distortion Turn the volume control down just a bit On the amplifier increase the input level control clockwise or to the right until you just start to hear distortion then back...

Страница 7: ... one for each channel If you want to use the RA25 for bridge mode connection of a subwoofer you must use an external passive lowpass crossover 7 Speaker wiring RA25 RA25 is a 2 channel stereo amplifier It can be connected either as a stereo amplifier for fullrange speakers or as a mono amplifier for a single driver connected in bridge mode RA25 With the HP filter in OUT position the amplifier allo...

Страница 8: ... box with it s functions is activated when the IN OUT switch is set to IN position Connect the cable between the amplifier socket and the socket on the remote box 8 Two fullrange speakers and one subwoofer to RA30 Filter settings channel 3 4 With the HP filter in OUT position the amplifier allows the speakers to play fullrange If you for some reason want to limit the low bass reproduction switch o...

Страница 9: ...AFTER 10 30 MINU TES The amplifier is overheating due to inadequate venti lation Check mounting position is free from obstruction Do this 1 Move the amplifier to a place with better ventil ation 2 Install one or two fans to cool down the heat sink 3 Overheating can also be caused by an impedance load below the level permitted NO OUTPUT FROM ONE OR MORE SPEAKERS Check the following 1 Balance contro...

Страница 10: ...attery Tap the wire on to the terminal of the battery and observe the movement of the cone The cone should move outwards when the wire touches the battery and inwards when the battery is removed If it is the other way around the speaker has been connected backwards and it must be removed and connected correctly If your system also has a subwoofer connected through a passive 6 or 12 dB crossover tr...

Страница 11: ... can be switched in out Pre amp configuration onRA30 sub channel Filter lowpass 40 125 Hz Fixed 25 Hz subsonic filter Yes Phase shift 0 180 degrees contiously Yes Grand bass adjustable gain 40 Hz 0 18 dB Remote bass level and phase control Yes can be switched in out Protection current thermal current thermal Max cable size DC input 7 AWG 10 mm2 4 AWG 21 mm2 Max cable size front speakers 7 AWG 10 m...

Страница 12: ...DLS Svenska AB P O Box 13029 SE 40251 Göteborg Sweden Tel 46 31 840060 Fax 46 31 844021 E mail info dls se www dls se ...

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