I got my boz all set up and the bias set to 30ma.(3v at R108)
My problem is when i play music it is very loud even with the volume controls(2 separate ladder attenuators)set at the minimum.
If I turn the volume up the sound goes up accordingly but it is way to loud at the minimum setting.
When I measure the volume pot it reads 14.7k ohms at min and
0 ohms at max.
What could be the problem??
My problem is when i play music it is very loud even with the volume controls(2 separate ladder attenuators)set at the minimum.
If I turn the volume up the sound goes up accordingly but it is way to loud at the minimum setting.
When I measure the volume pot it reads 14.7k ohms at min and
0 ohms at max.
What could be the problem??
AndrewT said:
I think you're right Andrew....but the terms you just used, means little to a newbe
Rtate:
Take a look at your volume control. It's got 3 legs, 2 that measures the same no matter what setting you choose, and a third that varies according to the other two.
Now make sure you connect the leg the varies to ground, as well as one of the other two legs.
Depending which way the Log. is according to the legs, you may have to swap the two legs that didn't change resistance when you turned the knob, in order to make it work proper.
Hmm, easy to do yourself.....somewhat more complicated to explain on print
Magura
Thanks for the replys!!
I got the BOZ from a friend who built the ladder on his own.
He said that the preamp worked before he put it into storage.
I do believe that the connections are correct and I think that you are correct about the variable series resistor.
When I measured the resistance it was between C1 and the output connection.
I got the BOZ from a friend who built the ladder on his own.
He said that the preamp worked before he put it into storage.
I do believe that the connections are correct and I think that you are correct about the variable series resistor.
When I measured the resistance it was between C1 and the output connection.
Further measuring...
The 2 legs that do not vary are measured from C1 to Gnd.
They are a constant 15k.
From C1 to the output measure
15K at minimum setting and
0 ohms at max setting
From the output to ground measure
90 ohm at minimum setting and
15K at maximun setting.
Could this just be an input overload issue from my CD player??
I read that using resistors at the input will limit the bandwidth of the preamp by rolling off the high frequencies
I have the bias set at 30ma(3v at R108)but something is still not right!
IF so, sorry about the double post as I am trying to cover all my bases...
The 2 legs that do not vary are measured from C1 to Gnd.
They are a constant 15k.
From C1 to the output measure
15K at minimum setting and
0 ohms at max setting
From the output to ground measure
90 ohm at minimum setting and
15K at maximun setting.
Could this just be an input overload issue from my CD player??
I read that using resistors at the input will limit the bandwidth of the preamp by rolling off the high frequencies
I have the bias set at 30ma(3v at R108)but something is still not right!
IF so, sorry about the double post as I am trying to cover all my bases...
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