Jaqua, who joined Altach from the Houston Dynamo, scored on a header in the 21st minute in front of 5,000 fan.
"Jaqua is a good striker," said Altach coach Heinz Fuchsbichler, "which he demonstrated in the preparations. We're satisfied with the point."
Altach is in eighth place of the 10-team league.
Adu was making his 10th league appearance of the season. Adu appeared to have injured his back.