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Chip Amps Amplifiers based on integrated circuits

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Old 14th April 2011, 04:08 PM   #1251
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From the information given, I'd closely re-examine the protection relay circuit, since the buzz could be the relay chattering a bit before activating. If that tests fine, good continuity, no shorts, etc., then I'd probably suspect the LM3886, since just about everything else seems to be fine.
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Old 18th April 2011, 02:25 AM   #1252
troystg is online now troystg  United States
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Location: In a dream... Please don't wake me.
Default cliclick. Music to my ears

After months of being in labor another Rev. C is born.

Fired up the first time perfectly.
Sound changed dramatically in the first 4 hours and continues to change for the last 24.

Only problem I have with this amp is that it's not mine...

EDIT: of special note is:

1. Thanks Uriah for the replacement resistors.
2. Thanks LinuxGuru for offering to send replacements but suggestion Uriah.
3. The Antek xformer is a 400VA model with static shield. Notice the purple lead on the power side. I have not heard a more quiet xformer. REALLY nice unit.
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Last edited by troystg; 18th April 2011 at 02:28 AM.
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Old 18th April 2011, 08:59 AM   #1253
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Troy, thanks and nicely done - layout, mounting, braiding, shielding, insulating sleeves, etc. Somebody is going to enjoy a neat treat of craftmanship, apart from the great sound...
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Old 18th April 2011, 02:54 PM   #1254
troystg is online now troystg  United States
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All wire is Silver Plated Teflon insulated. EDIT: the input signal wire is shielded twisted pair SPT with the shield grounded on the RCA side.
I personally would put 2 sets of RCA's on the side with the amps, put an input selector, a 2 way xo high passing the Rev. C's and feed the existing RCA's the lowpass outs for a powered sub or two.
A good volume control.
And I would change the binding posts.

That would make an IDEAL compact reference system.
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Last edited by troystg; 18th April 2011 at 02:56 PM.
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Old 18th April 2011, 03:00 PM   #1255
udailey is offline udailey  United States
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My first look at the new Antek transformers. Thanks Troy. Looks great!
Uriah
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Old 18th April 2011, 03:04 PM   #1256
udailey is offline udailey  United States
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Troy
If you are anywhere near Dallas you should consider coming to Lone Star Audio Fest. Its extremely fun and very social. Its just like traveling to dozens of DIYers homes and listening to their systems except they are only a room apart in the hotel. Hmm, I'm not good at describing it but man its just something not to be missed and it would be cool to met you.
Uriah
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Old 18th April 2011, 08:56 PM   #1257
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Quote:
Originally Posted by udailey View Post
Troy
If you are anywhere near Dallas you should consider coming to Lone Star Audio Fest. Its extremely fun and very social. Its just like traveling to dozens of DIYers homes and listening to their systems except they are only a room apart in the hotel. Hmm, I'm not good at describing it but man its just something not to be missed and it would be cool to met you.
Uriah
Uriah,

You going to be there this year?

If so, see Ya there.

John

I'm looking forward to getting a dose of "DIY git'er done", to juice me up and get me back out in the shop.....
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Old 18th April 2011, 10:39 PM   #1258
udailey is offline udailey  United States
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Will be there. You wearing a Hawaiian shirt again?
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Old 18th April 2011, 10:45 PM   #1259
mightym is offline mightym  United States
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They cover my fat belly don't they?
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Old 18th April 2011, 10:51 PM   #1260
udailey is offline udailey  United States
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Yes, Yes I believe it did.
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