Power Acoustik PWM-20 Owner's Manual page 2

E SPECIFICATIONS
4 VARIABLE FREQUENCY RANGES" e BAND1 (60 - 150Hz)
BAND2 (200 - 400Hz)
BAND3 (1.2 - 2.5KHz)
BANDA (7.5 - 15KHz)
SUB-WOOFER CROSSOVER FREQUENCY >>> 30Hz ~ 250Hz
BOOST/CUT ο Pepin ħed ae tas teh ο το ο ο ΡΜ Nr 18dB
SIN RATIO: sp ΔΛ 11548 REF 1V INPUT
FREQUENCY RESPONSE tr cc 20Hz ~ 25KHz
MAXIMUM OUTPUT VOLTAGE "nose er ee eee teres 8V RMS
THD ο mil ge Telnaes Ga Ἐν νο hk cae oy Bg She ο ST he TS te SS Se es SG 0.05%
NOT SENSITIVITY: PP i ey ORA os 300mV ~ 2V
HEADROOM: riss peeked Kaeaea ὃν othe thas 20dB
INPUT IMPEDANCE in bie Ma 10K OHMS
STEREO SEPARATION ss 82dB/1KHz
OPERATING VOLTAGE HF 11-15V NEGATIVE GROUND
OUTPUTIMPEDANGE ae 50K OHMS
SIZE (HxWxD) ccc tee 178x27.5x115mm
* DUE TO OUR CONTINUING EFFORTS TOWARDS PRODUCT IMPROVEMENT , THE ABOVE SPECIFICATIONS
ARE SUBJECT TO CHANGE WITHOUT NOTICE.
Mm INTRODUCTION
Congratulation on your purchase of your new preamplifier equalizer. Our sonic excellence is considered our
most important objective. Your selection of this component tells us you desire to achieve the same goal.
Welcome to the rapidly expanding group of disceming audiophiles who rely upon our products.
This manual has been prepared to help you maximize your enjoyment of the outstanding performance and
multiple advanced features of this unit. To fully realize the exceptional performance this product is capable of, it is
necessary that all signal sources, amplifiers, and speakers are of the highest qualify.
E EQUALIZER BACKGROUND
There are basically three types of equalizers: graphic, parametric, and a hybrid of these two, often referred
to as paragraphic. Additionally, there are passive equalizers, which have no gain, active gain preamps, which
have a gain stage usually with a volume control, and booster equalizers which we won't consider here since they
are inferior passive equalizers with inexpensive IC amplifiers built-in.. |
As in state-of-the-art home audio systems the optimum system requires a dedicated preamp with
enormous gain to drive the various power amplifiers. Since home audio amplifiers do not have adjustable
sensitivity, and require high output preamplifiers to drive them to maximum levels.
_ This unit 15 the first production preamplifier to incorporate a ae ai bandwidth parametric equalizer with
adjustable Center Frequency Control on the front panel. With 18db boost or cut on its four bands, it can
compensate for acoustic anomalies unique to the automotive environment. This unit easily becomes the
"Mission Control Center" of any high end automotive sound system.