Ramsey Electronics PG13 Manual de instrucciones descargar pdf (Pagina 5)

RV-1 • 5

find the problem and are able to correct it.

CIRCUIT DESCRIPTION:

Referring to the schematic diagram, you will see the basic layout to the

circuit. You will notice that there are many jumpers in the circuit as well.

These jumpers allow the kit to be configured for various applications. For now

we will talk about using the kit as a surround sound processor, which requires

only JMP 5, and JMP 7 to be in place, and all others left out.

In the surround sound configuration, the inputs are set for line level which is

the level that normally comes out of your tape deck and CD outputs of your

Hi-Fi or radio. Left and right inputs are sent directly to the outputs through R1

and R4, this allows the initial sound to be heard at the same instant it begins.

Both left and right inputs are also added together in U1:A, and amplified or

attenuated depending on the setting of R25. The output of U1:A is then fed

directly to the input of U3, the bucket brigade device (BBD). U2 controls the

BBD, and its clock rate is adjusted by R16. When the clock rate is varied, so

is the delay time of the BBD. The delayed output of U3 is then sent to a

lowpass filter consisting of the U1:C and the surrounding parts. This filter

serves the purpose of removing the clock's tone from the output of the BBD.

Presently it is set up to remove the tone from the lowest clock frequency of

around 3 KHz, but can be altered if a shorter delay is required. The output of

the filter is then sent to the left channel, and some of the output is sent back

to the input to send the same sounds through another cycle for the reverb

effect.

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Delayed

signal

Tim

Second

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1 2 3 4 5 6 7 8 9 10 ... 22 23

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Ramsey Electronics PG13 Manual de instrucciones Pagina 5