LOS ANGELES — Though he won’t be allowed to give expert testimony in his defense over federal obscenity violations, Ira Isaacs [pictured] at least will be able to testify about what he aimed to achieve in creating one of the scat movies named in his indictment.

Last week, a federal judge who ordered Isaac’s obscenity trial to begin May 17 will allow Isaacs to take the stand, a decision that allows him to offer “layperson testimony.”

Isaacs told www.xbiz.com he considers it a big victory because the prosecution didn’t want him to take the stand.

Isaacs has been charged with federal obscenity violations over the mail distribution of “Gang Bang Horse — ‘Pony Sex Game’” and “Mako’s First Time Scat,” as well as “Hollywood Scat Amateurs No. 7,” the film he created and the one he will be able to offer testimony for.

Judge George King, in his ruling, noted that the federal obscenity trial targeting Evil Angel founder John Stagliano faced a similar situation in deciding whether to certify Constance Penley, a professor of film studies at UC Santa Barbara, as an expert.

“That court ruled that although the professor possessed impressive credentials to discuss film studies, those credentials were not directly relevant to the task of distinguishing art from obscenity, and she had never written or lectured on the topic,” King said.

But King in the ruling said that Isaacs’ layman’s testimony about art could be relevant in relation to the film he created, “Hollywood Scat Amateurs No. 7.”