Old School Amp Crossover HELP!

[JazzScreamer 1]

Hey guys,

I have an old school RF amp. I believe it's a 25.2 Punch (All Grey with the side mounted fins). It has the card on the back of the amp to switch between full/ low and high pass. Does anyone recall the crossover points to this model?

[helotaxi 46]

I seem to recall there being different modules for different freqs.

[freemind 0]

Hey guys,

I have an old school RF amp. I believe it's a 25.2 Punch (All Grey with the side mounted fins). It has the card on the back of the amp to switch between full/ low and high pass. Does anyone recall the crossover points to this model?

Look at the .pdf links here;

http://www.rockfordfosgate.com/scripts/rig...lPTE*&p_li=

It should give you what you're looking for.

[Aaron Clinton 2,372]

Message Ramos, he would know the best out of anyone.

[KU40 173]

I seem to recall there being different modules for different freqs.

I think that's right too. You could get different cards designed for different frequencies and plug it in.

[ramos 2]

I seem to recall there being different modules for different freqs.

Good old x cards lol I hated those things The first introduction of them from rf offered a couple different versions for different cut off frequencies. Later on they simply added a inductor and capacitor table into the instruction manual so you could change the crossover points yourself.

If memory serves me correctly the 55.2 and smaller came with the 80hz low pass 80hz high pass card . But it's been a while . You can always check the values on the card and find out

[JazzScreamer 1]

Your correct with the x-over points. I'm still confused on the physical aspect on how to change the card x-over points to what i would like. I did read the manual that explains it but still not sure how to go about this. I appreciate the help.

[ramos 2]

Basically just finding the frequency you want and changing the appropriate value on the card. Tables in the manual, and they give you the formula too. Little bit of desoldering, and a little bit of soldering