Reducer
Model 1160
Quick Guide
Page 1/2
Hook Up
Input
Security
Advices
Placement
Heat
Select
Impedance
Connect
Amp &
Cabinet
Passive Power Soak For Guitar & Bass Amplifiers • Point To Point Handwired
© 2011 SPL electronics GmbH. All rights reserved.
IMPORTANT:
Before connecting an amp, select the appropriate impedance
for it with the front panel Impedance Switch
(refer to “Impedance Switch”
on page 2).
Never reduce impedance while playing!
The Reducer is a passive device and needs no electrical power. After the impedance is
set, connect guitar amp and cabinet as shown below.
In order to avoid health risks and equipment damage: Do not use this machine anywhere near water (wash basin,
swimming pools, or the like). Only use the connections as described. Never allow any fluids to be spilled or
sprayed on the machine or a foreign object through any of the machine‘s chassis openings.
Never cover or otherwise close off chassis openings to protect the unit from overheating. Never place the unit on
a soft surface (carpet, sofa, etc.). Make sure to provide for a mounting space of 5 cm/2 inches to the sides and top
of the unit when mounting the unit in racks or on cabinets. Placing the unit upon a guitar amplifier is obvious and
intended: the height of the feet is sufficient to also place the Reducer above a handle.
The Reducer converts electrical energy into heat. It can get considerably hot if high energy levels have to be
reduced. This is no reason for concern as long as you ensure to keep the max. input levels listed under “Specs”
on page 2.
Side and top panels are cooling surfaces. Only touch with caution! Keep all objects at a safe distance!
Here you connect the amp‘s loudspeaker output. Connector variant and pin configurations follow industry
standards: Unbalanced 1/4" jack (TS) connector with the signal at the tip and ground at the sleeve.
As with any
typical amp and cabinet cabling, it is critical to observe loudspeaker cable of a minimum 1.5 mm2 cross section.
Instrument or line cables can lead to amplifier damage!
We recommend to use cables with a maximum length of
3 meters/10 feet for lossless signal transmission.
IMPORTANT WARNING ON CONNECTING GUITAR AMPS
Many guitar amps are not designed for sustained maximum level operation, and if run this way, it can lead to
overloads and power amp damage. At high levels, amps can produce high frequency oscillations which can
destroy output transformers. Moreover, this can cause audible unwanted output transformer distortion. Such
problems are not a result of Reducer use, but reside within the guitar amp. Even in situations where you might
wish to push the guitar amp to its limits in conjunction with the Reducer, you should always be sure to allow for
ample power reserves to avoid endangering the amp itself! Reducer this way.
Therefore we strongly recommend
that the guitar amp should never be run at over 70% of its maximal signal level!
Guitar/Bass Amp
Cabinet
USE SPEAKER CABLE
Further information: spl.info
Page 1/2
Hook Up
2
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