taming the gc beast

ss1 · 28th May 2004, 09:36 PM

Hello
I completed the gc. Okay half of it (one channel). Hooked it up to a cheap speaker. damn that amp is LOUD even with one speaker (mono). I'm using the Alps 100K volume control (from radio shack). With the volume control I was able to turn down some of the sound but it's still to loud. Do I need larger pot maybe 250K? or Did I wired it wrong? It has 3 pins for each channel (total 6 pins). I wired signal in from rca on pin 1st (outside) and signout to pcb (middle pin? Left 3rd pins empty and 4th pins empty too on the other side?
btw the amp is good stuff made my cheap speaker sound good.
i can't wait to hook it up to the good speaker. wow kekeke
thanks

BrianGT · 28th May 2004, 09:44 PM

Quote:

Originally posted by SS1
Hello
I completed the gc. Okay half of it (one channel). Hooked it up to a cheap speaker. damn that amp is LOUD even with one speaker (mono). I'm using the Alps 100K volume control (from radio shack). With the volume control I was able to turn down some of the sound but it's still to loud. Do I need larger pot maybe 250K? or Did I wired it wrong? It has 3 pins for each channel (total 6 pins). I wired signal in from rca on pin 1st (outside) and signout to pcb (middle pin? Left 3rd pins empty and 4th pins empty too on the other side?
btw the amp is good stuff made my cheap speaker sound good.
i can't wait to hook it up to the good speaker. wow kekeke
thanks

Wire the third pin on the pot to your input gnd.

--
Brian

HDTVman · 28th May 2004, 09:47 PM

Where is your ground connection to the vc pot.

It should be wired like this. With control shaft pointing to you and connections on top.

Input from RCA jack to the connection on the right.
center connection to the input of the chip.
ground the left connection to RCA ground.

This way you will be able to turn the volume all the way down to off.

Later BZ

rayban68 · 29th May 2004, 12:13 AM

Doesn't the left side (rca ground) have to be connected to ground on the amplifier?

Ahh i see that BrianGT already said that... makes me feel smarter

BrianGT · 29th May 2004, 01:24 AM

Here is a picture of the wiring, if anyone is still confused. To figure out which pin is pin 1, turn the pot to the maximum volume setting (all the way clockwise), and the pin with 0 ohms to the middle terminal (pin 2) would be considered pin 1.

--
Brian

ble0t · 29th May 2004, 05:00 PM

Is there a difference between connecting the SG (PCB) and Input Ground both at the pot or both at the RCA? Is one better than the other?

rayban68 · 29th May 2004, 05:54 PM

Shouldn't matter much, as long as all three points are connected together (rca ground, pot ground, signal ground).

28th May 2004, 09:36 PM	#1
ss1 diyAudio Member Join Date: Jan 2009	taming the gc beast Hello I completed the gc. Okay half of it (one channel). Hooked it up to a cheap speaker. damn that amp is LOUD even with one speaker (mono). I'm using the Alps 100K volume control (from radio shack). With the volume control I was able to turn down some of the sound but it's still to loud. Do I need larger pot maybe 250K? or Did I wired it wrong? It has 3 pins for each channel (total 6 pins). I wired signal in from rca on pin 1st (outside) and signout to pcb (middle pin? Left 3rd pins empty and 4th pins empty too on the other side? btw the amp is good stuff made my cheap speaker sound good. i can't wait to hook it up to the good speaker. wow kekeke thanks

28th May 2004, 09:47 PM	#3
HDTVman diyAudio Member Join Date: Aug 2001 Location: Chicago area	Where is your ground connection to the vc pot. It should be wired like this. With control shaft pointing to you and connections on top. Input from RCA jack to the connection on the right. center connection to the input of the chip. ground the left connection to RCA ground. This way you will be able to turn the volume all the way down to off. Later BZ __________________ What ever makes the tunes flow

29th May 2004, 05:00 PM	#6
ble0t diyAudio Member Join Date: May 2004 Location: Milwaukee, WI	Is there a difference between connecting the SG (PCB) and Input Ground both at the pot or both at the RCA? Is one better than the other? __________________ gravity always wins

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29th May 2004, 12:13 AM	#4
rayban68 diyAudio Member Join Date: Mar 2004 Location: Prince George, BC, Canada	Doesn't the left side (rca ground) have to be connected to ground on the amplifier? Ahh i see that BrianGT already said that... makes me feel smarter

29th May 2004, 05:54 PM	#7
rayban68 diyAudio Member Join Date: Mar 2004 Location: Prince George, BC, Canada	Shouldn't matter much, as long as all three points are connected together (rca ground, pot ground, signal ground).

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