Pennell has stressed the importance of the Warriors really exploding into life and making home advantage count as the squad strives to make Sixways a difficult place to visit.
And he has urged the club's dedicated and loyal followers to play a big role by cranking up the volume in the promotion bid.
"Home games in the play-offs are massive," said Pennell. "This is a different competition and we have to make sure we take the form from the regular league season into these play-offs.
"Sixways has to be our fortress, especially looking ahead when we want home advantage in the latter stages. We have to play as we know we can and leave teams in no doubt that they face a very tough day at the office here.
"That has to start this weekend. Hopefully we can get a big crowd in and we can start with a big performance.
"We are all in this together and the fans have been fantastic so far. Now I want even more intimidating atmospheres and for teams to come here to face big crowds and really hear that noise and our support.
"It can be an incredibly intimidating place for the opposition to play when the stadium is really rocking and our players really feed of that. It lifts every one of us and we would love nothing more than to put in some massive displays for our fans."
Full back Pennell, who has made an eye catching return to the team in recent weeks, admits the victory over Bristol was all important on day one of the play-offs but firmly believes the team can produce even more.
"It was very important to win first up," he added. "The most important thing was the victory. We didn't play how we really wanted, but we made massive improvement in certain areas and our defence was top class.
"Now we just need to sharpen our attack. We showed what we can do by scoring six tries when we didn't really produce what we wanted. There is more to come and in these next set of five play-off games we have got to keep our focus and get even better."
Make some noise and join the Warriors army at Sixways this weekend! Call the Warriors Box Office on 01905 454183 or click HERE to buy online.