Butler Audio MULTI CHANNEL POWER AMPLIFIER TDB 5150 - Manual (Page 6)

6
Inputs:
The high-quality gold plated RCA-type input jacks will easily accept
the line-level signal supplied from most pre-amplifiers. The input gain
has been internally preset to equal full (150 Watts) output at 8
ohms for an input sensitivity of 1.5Volts. The input impedance is a
very compliant 47K Ohms which accepts a wide range of signals
without undue loading.
Since these inputs are unbalanced, it's good practice to keep the
shielded connecting audio cables as SHORT as possible. Cable
lengths longer than 10 feet are not recommended and excessive
length cables should never be coiled. Use the proper cable lengths;
the performance and sound quality of this amplifier is worth it!
Speaker Output Binding Posts:
Gold plated heavy duty 5-way binding posts with large custom-
machined gold plated hex drive nuts have been supplied to
accommodate virtually any type of speaker connection. Speaker
wire should be kept as short as possible and away from input cables.
Shielded cables must NEVER be used, as this may cause high
frequency loss and introduces a needless capacitive load to the
amplifier. DO NOT SHORT ANY POST TO ANY OTHER POST!
Speaker Phasing:
Upper post, RED ring, is POSITIVE.
Lower post, BLACK ring, is NEGATIVE.
Correct speaker phasing is essential for optimum operation.
Note: Never short ANY speaker post to ANY other speaker post! Connect 1 separate
speaker load to each channel. DO NOT attempt to Bridge between channels in any way!
Recommended Channel Assignment:
While all channels are identical, for minimum heat generation, please
use the following guide for preferred channel assignment for the
model 5150:
Ch 1: Right Main
Ch 2: Right Surround
Ch 3: Center Front
Ch 4: Left Surround
Ch 5: Left Main
The recommended model 3150 Channel assignment:
Ch 1: Right Main or Right Surround
Ch 3: Center Main or Center Surround
Ch 5: Left Main or Left Surround
Remote Operation:
If remote operation is desired, the 3.5mm mini phone jack is
provided on the rear panel. Connecting cable may be either
shielded or unshielded. Supply voltage should be between 8 and 13
V DC, either polarity, from the preamp or other remote source.
Note: Remember to leave the front panel power switch "OFF" (down) for remote operation