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Amplifier Accessory Pack
The accessory pack included with each amplifier contains the mounting
hardware necessary to secure the amp to the vehicle and to attach the end
caps to the amplifier.
• Installation & Operation Manual
• Punch Verification Certificate
• (4) Amplifier mounting screws (#8 x
3
/
4
" Phillips)
• (2) Speaker Connector Set Screws (
3
/
32
" Allen)
• (2) Power Connector Set Screws (
1
/
8
" Allen)
• (4) Endbell Mounting Screws (
9
/
64
" Allen)
• (1) Allen Wrench (
1
/
8
")
• (1) Allen Wrench (
9
/
64
")
• (1) Allen Wrench (
3
/
32
")
• (1) Remote Punch Bass ( replacement part # WP - 2429)
• (1) Remote Punch Bass bracket screws ( 4 x
7
/
16
” Phillips )
Introduction
In R&D for 3 years, the engineers at Rockford Fosgate unveiled a new tech-
nology for car audio applications, Class bd. The principle was shown to
the public at the 1999 CES.The bd class amplifier puts over 1000 watts of
rms power in the hands of the serious car audio fanatic-- and does so in the
relatively small size of the older Power 250.1 package.
Conventional Class D amplifiers have been around for 60 years in theory
and about 30 years in practice. Judging from market acceptance, they are
not well suited for full range reproduction.
As known to scholars of this field, a system called Class BD can remove the
troublesome, rail-to-rail carrier envelope by differential subtraction in the
load. However, since each output is now an untamed full rail-to-rail
switching signal, an RFI problem was generated which has eluded solution
over the 30 years of Class bd history.
Our new version of this principle, which we call Class bd, solves this fil-
tering problem by generating the output pulse waveform without generat-
ing the carrier frequency. This unprecedented approach is called Single-
Terminal Alternating DUal Sampling Technology - or STARDUST (patent
number 6,097,249.)