OXFORD — With band announcements still forthcoming, Nateva Festival organizers have announced they will raise ticket prices on Monday.

The three-day and four-day weekend passes will each rise by $12, bringing the three-day pass to $169, plus fees, and the four-day pass to $194, plus fees.

Tickets have been for sale since Jan. 4. Jim Britt, spokesman for the festival, said he didn’t have sales figures for the past month, but said sales were higher than they had been after seven weeks for last year’s festival.

Without band announcements, Britt said, festival-goers are buying tickets on the reputation of last year’s festival alone. “They’re guests or fans from last year who really had a stellar time, who don’t view it as a risk, who view it as a savings.”

He said Nateva promises the lineup will be “equal or better” than last year’s, which included Further, George Clinton, The Flaming Lips and Jakob Dylan.

Britt said he’s seen excitement brewing in online message boards and on Facebook. “It’s a good vibe,” he said Friday.

Last year, organizers began announcing bands in mid-February, and Britt said they’re on schedule for a similar timeline this year. He said bands will be announced in waves as they commit to the festival.

“The bands are formulating their summer tours,” Britt said, and for many, it depends on whether they can be in the Northeast in early August.

As of now, the only band announced is the McLovins, a Hartford-based trio of teens ages 16, 17 and 18. The band’s reputation has grown quickly over the past year and they’ve gained fans, including Phish songwriter Tom Marshall, who has helped them write songs.

The McLovins played last year on one of the smaller stages. This year, Nateva organizer Frank Chandler has announced they’ll be a main-stage band.

In the lead-up to the festival, Nateva plans on producing some small concerts around New England, beginning Saturday night with a McLovins show at the Middle East club in Boston. Britt said there may be more as the festival works to keep the Nateva name in people’s consciousness in the months leading up to the festival.

The 2011 Nateva Festival is set for Aug. 4-7 at the Oxford Fairgrounds on Pottle Road. Tickets are available online at natevafestival.com.

treaves@sunjournal.com