pre amp/OP amp

[Harry Fisher]

is it possible for me to use a 7W amp as a pre amp or op amp?

and if i so how would it be wired with a tone controle unit and where would volume vontrole go?? and what is the gain??

many thanks harry

[Glowbug]

You could, but you'd have to get a line output converter, something car audio guys use when they're trying to adapt stock head units that don't have a line level output to amplifiers that only have line inputs.

It's a temporary fix, but I wouldn't want to permanently use the system like that at home.

Does your power amp even need a preamp before it, or can you just put a pot in line to control volume?

[Harry Fisher]

what potentiometers should i use??

[Harry Fisher]

i want to buy a pair of peerless tweeters and have been told that they are 6 ohm impendance can i run them alongside a bass driver that is 8 ohms in the came cabinet will this screw up my amp??

[Glowbug]

You'd need a crossover to split the frequencies to each driver.

What's the rest of your system look like, what are you trying to do?

[Harry Fisher]

iv got a 70W per channel power amp in to a single basspad type speaker that i mounted a tweeter in and i am making a pair for my Design technology project. the cabinet that i made i put an old peerless tweeter of my dads in and it sounds amazing but i need a pair but the ones i have looked at say that they are 6ohms and i thought that you had to match the resistances of the two speakers in the cabined even after the crossover! coz my bass driver is 8 ohms! ?? help me plz!! ps what potentiometres do i use for volume control???????

[Glowbug]

50K-100K audio taper pots should do the trick.

I don't know if I can help you much on Xover design, although I will say if this is your first build, I'd probably recommend buying a copy of the Loudspeaker Design Cookbook and reading it thoroughly

[Harry Fisher]

kool thanks but im still confused as to whether the impendances will be ok??