home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Shareware Overload
/
ShartewareOverload.cdr
/
games
/
alpha.zip
/
ALPHAREP.SCR
< prev
next >
Wrap
Text File
|
1987-01-20
|
4KB
|
81 lines
Dear Audiophile:
Thank you for your inquiry about Alpha active crossovers.
Alpha's products and services are for technically sophisticated persons who
understand and use active crossovers. Nonetheless, most people have little
interest in manufacturing these special components. That is where we come in.
We also have expertise and specialized design tools for optimizing applications
of this equipment.
We market a line of extremely flexible circuit cards and chassis for building
active crossovers. Layout and fabrication of these products meets the highest
standards. Our open, symmetrical building-block oriented circuit boards have
gold plated contact fingers and heavy solder plated traces. We use top quality
high temperature circuit board substrates. This ensures easy assembly and
reliable installation. We use standard, laboratory quality chassis and card
frames.
These well-documented circuits employ high quality integrated circuit
operational amplifiers with close tolerance film resistors and capacitors.
They provide reliable, predictable, state-of-the-art performance. A typical
system will have an input impedance of 10K ohms. It will be able to drive 600
ohm loads to +22 dBm (over 8 volts RMS). There will be less than .02 THD or IM
distortion at any audio frequency. Noise is extremely low, and a 110 dB dynamic
range is typical. Design frequency response can be achieved within 0.1 dB.
Ask Alpha for a simple 2-way crossover for adding a subwoofer to a pair of
bookshelf loudspeakers. Call on Alpha for a 6-way system with phase
compensation, driver equalization, and preset level matching. Alpha can
supply anything in between.
If you just want to add a subwoofer to your existing system, order the model
ECO-SW with one each Alpha EC-300 crossover card and regulated power supply.
They are installed in a standard die-cast box. Here is an economical, high
performance solution!
Configure Alpha EC-300, LA-300 and AD-300 cards in a 300 series card rack to
build complex systems. This will provide you with all of the latest
technology in active crossover design.
For example, the model ECO-S3W three-way system uses 2 each EC-300 crossover
cards and a PS-300 power supply in a die-cast box. The 300-S3W three-way
system adds 2 each LA-300 level match cards, and a 300 series card rack.
The difference between the small and large systems is output level matching,
space for future expansion, and rack mounting.
Use these simple, reliable circuit card building blocks to build systems with
any degree of complexity. Build six-way systems, three channel systems, and
systems with analog delay using Alpha products. Add driver equalization,
phase compensation, and produce outputs for driving bridged amplifiers with
Alpha circuit cards. The EC-300 card includes a user configurable area with
a dual operational amplifier.
Demanding professional applications for very large high performance sound
reinforcement systems can add Alpha's MA-300 isolated, balanced input/output
cards. Add one MA-300 card for every balanced output you need. A three-way,
two-channel system requires six MA-300 cards. This brings the total
crossover system up to the capacity of a single 3.5 inch high rack frame.
Attached, please find our price list. If you order from the price list,
please send check or money order. Include an outline of your requirements and
your phone number. We can contact you before filling the order, if we have
any questions. If you need further information about specific products,
including detailed electrical and mechanical specifications, don't hesitate
to write us. If you have a specific application in mind, we can recommend a
configuration that will meet your needs.
Sincerely,
Robert Klacza,
Marketing Manager