Audiobahn 2200hct output designations - diyAudio
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Old 29th August 2012, 09:21 PM   #1
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Question Audiobahn 2200hct output designations

I have an Audiobahn 2200HCT with no output transistors in the amp. I have been told that this amp had TIP35&36C's which a have here. Only problem is I'm not sure which bank had what type... can someone please lmk which ones go where?

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Old 29th August 2012, 10:04 PM   #2
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If you look at the data sheet for the Trans. One is a PNP and the other, a NPN. I think the NPN goes on the side with the + rail voltage and of coarse PNP goes on the - rail. The TIP35 is an NPN, TIP36 PNP. You can get data sheets from mouser. OH, you can find the NEG rail by the filter caps, they are marked with a - line usually. Or you can power it up and mesure the DC Voltage on them.
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File Type: jpg NPN-PNP.jpg (104.4 KB, 66 views)
File Type: jpg rail.jpg (37.2 KB, 63 views)

Last edited by 90scaraudio; 29th August 2012 at 10:16 PM.
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Old 29th August 2012, 10:42 PM   #3
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DOH! lol, ya I guess I could just power it up... For some reason I was thinking that these amps had mixed banks. (ie. both 35 & 36 on one side) but no... in looking at the traces, they appear to be all PNP one side and NPN on the other but I'll still just power it up and check the pads to be certain.

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Old 29th August 2012, 10:44 PM   #4
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You can always follow the traces from the power supply filter caps
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Old 30th August 2012, 07:35 PM   #5
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In the 2300hct, some of the amps used TIP35/36 and some used C2384/A1303. The NPN outputs are on the same side as the large NPN driver near the center of the board. Again, this is for the 2300, not the 2200 but I think they're similar.
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Old 30th August 2012, 10:56 PM   #6
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Oops... my bad, this is a A2300HCT. Any chances you have a schematics for this amp Perry or anyone?
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Old 30th August 2012, 11:39 PM   #7
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I have the same amp sitting here right now ..

Let me know if you need any info on it before i give it back
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Old 31st August 2012, 02:01 AM   #8
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I don't have a diagram but it's a simple generic amp. What problem do you have that requires a diagram?
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Old 31st August 2012, 09:34 PM   #9
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None really, yet, that I know of, lol... Just nice to collect them. I took many pics and notes to add to my folder.

Question... should this bracket be soldered to the rail connecting all the collectors (center leg)? It is on one side of the amp, but the other side is loose, and no solder bridge.
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File Type: jpg IMG_0188.jpg (151.4 KB, 44 views)
File Type: jpg IMG_0189.JPG (958.0 KB, 42 views)

Last edited by Deadly Sones; 31st August 2012 at 09:36 PM.
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Old 1st September 2012, 10:14 AM   #10
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It appears to have light passing through the board all around it so I wouldn't expect there to be an electrical connection at that point. It appears to only be a bracket for the display board. There are some audiobahn amps that use these for both a fan/display bracket and a bussbar so you have to look at each one carefully.
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