ENGLISH USER MANUAL
SYNQ
®
1/18 RS-218B
Congratulations and thank you for buying this SYNQ®product. Please read these operating instructions
carefully so you will know how to operate this product properly. After you have finished reading the
instructions, put them inasafeplace for future reference.
DON’T FORGET TO REGISTER YOUR RS-218B CABINETS. YOU WILL A UTOMATICALLY RECEIVE A
REMINDER WHE N IMPORTANT PROD UCT INFORMATION IS AVAILABLE!
SURF TO: WWW.SYNQ-AUDIO.COM/REGISTER/
FEATURES
High powerdouble18”subwoofer with very compactdesign
Can be used forbothfixed installations and mobileapplications
The horn loadeddesignguarantees a nice,punchybassreproduction
Perfectforclubs,discotheques,stage, rental, Pro-DJ, ...
Verystrongplywood enclosure with:
Durable,scratch resistant, painting
Integrated handles
Heavy duty rubberfeet
Steelfront grill
Fixing points on thebackpanel for optionalwheels
Equipped with 2 highpower18" woofers with ALUbasket
A perfectmatch with 2x RS-15 cabinets
SAFETY PRECAUTIONS
The RS-218B can easily reproduce sound pressure levels (SPL) sufficient enough to cause severe and
permanent hearing damage.Always protectyour ears when you are exposed to SPL in excess of 85dB!
Be sure that your power amp is turned off before connecting the speakers.
The woofer is not protectedagainst humid and rain. Therefore this speakeris intended for indoor use only,
use of this product outdoors, in humid conditions,voids all warranties.
Always mount this speaker in safe and stable way.
CONNECTIONS
The RS-218B has two Neutrik®Speakon®connectors.Speakon®wiring is madeas follows:
POSITIVE = +1 and +2
NEGATIVE = -1 and +1
Cables to be used:
You can use readymade cables but of course you can also assemble the speaker cables yourself. Take care
to use good quality speaker cable with at least 2x 2.5mm² conductors. You will also need a pair of Neutrik
®
Speakon®NL4FC connectors. This connector has 4contacts: +1 -1 +2 -2. Your speaker cable has 2
conductors with different colors. Be sure to connect the same color on each side of the cable to the
corresponding contact:+1 to +1 and -1 to -1. Since the Speakon®contacts are interconnected (+1 to +2 and
-1 to -2), you can also use 4x 2.5mm² LS-cables to reduce signal losses due tolong cables.
Important! Don’t mix up the + and – contacts, if you inverse the conductors, poor sound quality with
a lack of low frequencies will be the result.
ENGLISH USER MANUAL
SYNQ
®
2/18 RS-218B
Inputconnector plate:
On the connector plate you will find a switch behind a transparent cap. Just unscrew the 2 small bolts
(marked “C” on the picture) so you can remove the cap and change the switch position. You can put the
switch in 2 different modes (also see the electronicdiagram of the switch) :
A) Woofersseparated:
Used when you only install 1 subwoofer or when the amplifier is not powerful enough to drive 1
subwoofer per channel.
IMPORTANT: Both inputs must be connected and the amplifier must be set to MONO mode (NOT
Bridge!)
Both woofers inside the cabinet have their own Speakon®input connector. This means that you can
connect the left output of an amplifier to the left input of the subwoofer and the other amplifier output to
theright Speakon®input. The powerneeded at the inputs is 2x 600Wrms @ 8ohm. (2x1200Wpeak)
B) Woofers in parallel:
Used when you have powerful amplifiers that can deliver the high power needed by the
subwoofer.
The power needed at the inputs is 1x1200Wrms @ 4ohm. (1200Wpeak)
Both woofers/Speakon®connectors are connected in parallel. If you like, you can connect a second RS218B in parallel.
Attention: when a second subwoofer is connected, the impedance drops from 4Ω to 2Ω! Please note
that most amplifiers do not support heavy working conditions while under 2Ω load. Moreover the
damping factorof your amplifierdrops significantly resulting in a weakerbass response.
Preferred setup combination:
When used with the RS-15 cabinets you should try to keep a certain balance with this subwoofer to make a
good sounding system. We suggest using 2pcs RS-15 on 1pc RS-218B. You should always use separate
amplifiers for the top and sub cabinets plus an active crossover or audio processor. Of course you are not
limitedto this combination, you can experiment with other setups as much as you like!
WHEEL PACK
If used on the road, you can fix an optional set of 4 wheels to the back of the subwoofer. The subwoofer is
standardequipped with inserts so you can attach the wheels easily with the included bolts.
MAINTENANCE
Clean the cabinet with a sponge and some non aggressive soap solution. Don’t use any chemical solvents
as they attack the enclosure!