AllegroSound - Pioneer Series20 D-23 Electronic Crossover

AllegroSound

Buy < Sell > Trade
Mod < Rent > Repair

CLICK to Contact AllegroSound CLICK to Contact AllegroSound CLICK to Contact AllegroSound CLICK to Contact AllegroSound CLICK to Contact AllegroSound CLICK to Contact AllegroSound CLICK to Contact AllegroSound CLICK to Contact AllegroSound CLICK to Contact AllegroSound CLICK to Contact AllegroSound

...fabled...
PIONEER
Series20
D-23
Electronic Crossover

- Quality & Flexibility are the name of this tune -

2-way, 3-way or 4-way crossover functions.

All-discrete, pure-complimentary, Class-A, SEPP buffer-amplifiers with differential power supply for purest sound.

High Input-Impedance and Low Output-Impedance prevent input-source and output-load from influencing the filters in any way.

Dual High-Voltage Power-Supply of ±30V regulated at ±22V, providing wide dynamic range and excellent channel separation.

Frequency selection every one-third octave.

Independent Slope and Frequency, each section.

Level control in 1-dB steps, each channel, each section.

Selectable cutoff Slopes of 6, 12 or 18 dB/oct.

6dB/oct & 18dB/oct are -3dB at Fc.
12dB/oct is -6db at Fc.

Precision switches and controls -
quality you can feel as well as hear.

Type

Electronic Crossover, 2/3/4-way

Circuitry

Buffer amp:

Plus/Minus dual power source Class-A SEPP

Filter section:

CR Passive Filter (6db/oct & 12db/oct)
CR Active Filter + CR Passive Filter (18db/oct)

Cutoff Frequency

Low (High Cut), Mid-Low (Low Cut):
   63, 80, 100, 125, 160, 200, 250, 320, 400 and 500, 630 Hz.
Mid- Low (High Cut), Mid-High (Low Cut):
   320, 400, 500, 630 and 800, 1k, 1.25k, 1.6k, 2k, 2.5k, 3.5k Hz.
Mid-High (High Cut), High (Low Cut):
   1.6k, 2k, 2.5k, 3.2k, 4k, 5k, 6k, 8k, 10k, 12.5k, 16k Hz.

Slope

6db/oct, 12db/oct, 18db/oct (independent, each section)

Level control

0 ~ -30db in 1-db steps (independent, each channel)

Insertion Loss

< 2db

Input Impedance

100k Ohms

Output Impedance

4k Ohms max

Output into 50k Ohms

1V nominal, 10V max

THD (20~20k Hz)

0.005% at 1V output
0.1% at 10V output

Frequency Response

10~100k Hz, +0/-1db

SN ratio at 1V output

-100db (IHF-A)

Semiconductors

71 transistors, 18 diodes/etc, ZERO IC's! ("ChipsAhoyNot")

Power Consumption

11W

Dimentions

20" Wide, 6" High, 14" Deep

Weight

20 lbs

AllegroSound (Est.1973)
Los Angeles, California USA
Rick@AllegroSound.com

FOR SALE / TRADE

HOME / master-index

* AllegroSound et al assumes no responsibility for the use or misuse of products, services, info, etc.

World-Wide
Shipping

AllegroSound
world's finest audio systems
Los Angeles, California USA

Rick@AllegroSound.com

alt: AllegroSound@yahoo.com

323.960.5014

> home <