Connecting the 1800
About Impedance
Before you hook up your speaker cabinet, be sure that you understand a little about
impedance. Impedance is the electronic load that the speaker puts on the power amplifier
and is measured in Ohms.
Here is the tricky, yet simple rule of impedance: When two speakers are wired in "Parallel"
the total impedance is cut in half and when two speakers are wire in “Series” the total
impedance is the sum of the speakers individual impedance.
The
1800
impedance (many audio
guys used the made up word “ohmage”,
however the correct term is impedance)
is 4 Ohms. So, when two 1800ʼs are
connected together in parallel, the total
impedance is 2 Ohms. The impedance
of your speaker also has an effect on
your amplifier. In general, the lower the
impedance, the more power your ampli-
fier will put out.
IMPORTANT
: There is a minimum safe
impedance so be sure to check the
manufacturerʼs recommended imped-
ance for your amplifier to avoid any
damage to your amplifier or voiding
your warranty.
Connecting the 1800 to Your Amplifier
The 1800 connections are made via
1/4” phone jacks located on the rear
panel jack-plate. Be sure to make your
connection with un-shielded speaker
cable. Connect the Amplifier Output to
the speaker Input on the 1800ʼs rear
jackplate.
Using the EXTENSION Output
The 1800 provides both 1/4-inch and
Speakon connections. You can use
either connector to connect to your
amplifier head. Since both the 1/4-
inch phone and Speakon connectors
are wired in parallel, you can connect
additional speaker cabinets using either
connector as an extension output. Be
sure to read the section above on
impedance to insure a proper hook-up
with your amplifier.
Hartke Systems
Distributed Exclusively by
Samson Technologies Corp.
Hicksville, New York 11802
MODEL 2000
200 WATTS
8
�
= 120 WATTS
4
�
= 200 WATTS
CAUTION
TO PREVENT SHOCK, DO NOT OPEN. NO USER SERVICE-
ABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL. TO PREVENT FIRE OR SHOCK
HAZARD, DO NOT EXPOSE TO RAIN OR MOISTURE.
ASSEMBLED IN R.O.K.
SERIAL NUMBER
115
~ AC INPUT
115V/230V 50/60Hz
FUSE
5A/250V, 180W (115V)
2.5A/250V, 450W (230V)
SPEAKER OUTPUTS
8
�
8
�
ON
OFF
HPF
EFFECT
SEND
RETUIRN
