My SB16 CT1770 output is off balance. \ VOGONS

My SB16 CT1770 output is off balance.

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First post, by Lylat1an

Posted on 2024-05-04, 03:50

Lylat1an Offline

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Location: Washington state

In the Sound Blaster Diagnostic utility, My SB16 CT1770 seems to be outputting audio in stereo when testing just the left and right channels, and I can barely hear anything when I select both channels.

If anything, the left channel is being favored.

I tried telling the mixer to balance more toward the right channel, and setting the jumpers to disable the amplifier, but those didn't help.

How might I fix this?

Reply 1 of 3, by dominusprog

Posted on 2024-05-04, 11:05

dominusprog Offline

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This issue can be caused by bad capacitors, I'm talking about the two large 470uF amplifier caps.

A-Trend ATC-1020 V1.1 ❇ Cyrix 6x86 150+ @ 120MHz ❇ 32MiB EDO RAM (8MiBx4) ❇ A-Trend S3 Trio64V2 2MiB
Aztech Pro16 II-3D PnP ❇ 8.4GiB Quantum Fireball ❇ Win95 OSR2 Plus!

Reply 2 of 3, by Lylat1an

Posted on 2024-05-04, 16:42

Lylat1an Offline

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Posts: 218
Joined: 2020-03-06, 23:10
Location: Washington state

dominusprog wrote on 2024-05-04, 11:05:

This issue can be caused by bad capacitors, I'm talking about the two large 470uF amplifier caps.

Would that happen even if both channels are jumpered to disable the amplifiers?

Reply 3 of 3, by dominusprog

Posted on 2024-05-05, 18:20

dominusprog Offline

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Location: Innsmouth

Lylat1an wrote on 2024-05-04, 16:42:

dominusprog wrote on 2024-05-04, 11:05:

This issue can be caused by bad capacitors, I'm talking about the two large 470uF amplifier caps.

Would that happen even if both channels are jumpered to disable the amplifiers?

Well, I had the same problem with my CT4170 and like your sound card, changing the jumpers didn't fix the problem. But after changing the two 470uF caps and two smaller ones (I don't remember the capacity) beside them, it was fixed. Post a photo of the sound card.

A-Trend ATC-1020 V1.1 ❇ Cyrix 6x86 150+ @ 120MHz ❇ 32MiB EDO RAM (8MiBx4) ❇ A-Trend S3 Trio64V2 2MiB
Aztech Pro16 II-3D PnP ❇ 8.4GiB Quantum Fireball ❇ Win95 OSR2 Plus!

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