For one, Definitives are nice speakers. Made in Baltimore (or at least used to be). My old boss at the AV company I worked for loved them. I got a set of bookshelves from our warehouse for my girlfriend’s turntable setup. Pop the grilles off the towers and just check the condition of the surrounds. They should probably be okay, but coming from a thrift shop, it would be something I’d take a look at.
Boston speakers aren’t bad either, though the most experience I have with them was an old 2.1 computer system way back in the day. But I’d rather use the Definitives over the Bostons, especially since the Defs are towers with powered subs.
As for the receiver issues, I’m assuming it powers on? To start, test the amp/speakers. Start by turning on the stereo, set it to a known FM radio station, and make sure ‘Speakers A+B’ option is on/selected. If there are ‘sound modes’ make sure it is in something like multi-channel stereo (this should convert a standard 2-channel stereo input to output on all of the 5.1 channels). Grab a piece of speaker wire, strip the ends; you’ll probably want about a 6 foot length of wire to make it easier on yourself. Unscrew all the red/black speaker terminals on all the speakers. Twist the bare copper ends as usual on the ends of the speaker wire. Start with one speaker, connect the wire to the speaker terminal as usual, but leave the other side free. Go down the line of all the terminals on the back of the receiver and check all of the outputs. You can just stick the bare copper in the middle hole of the receiver terminal. Make sure they all output sound. Reverse this for all the speakers; connect the wire to a known good channel on the receiver, and leave the bare end disconnected (this you need a bit more careful with; make sure you DO NOT touch the bare wire ends together if the receiver is on!) but go from speaker to speaker to make sure they all work. The last bit you’ll want to test is the built-in subs in the towers. You’ll need two RCA cables (two single RCA cables, not the typical red/white pair). Run the RCA’s from the Sub Woofer Pre-Out to the Optional LFE input on the towers, plug them in, and power them on. Turn the level up on the tower to halfway/12 o’clock. You’ll know if they’re working or not. Once that is done and everything works correctly, there’s a couple options for setting this system up.
Setup 1 - 2 channel, Definitive towers only (it’ll technically be a 2.2 setup, since the towers have built-in subs, but whatever), primarily music focused, or a small/medium TV room
- Run speaker wire (16/2) from ‘Front A’ R/L to the corresponding tower’s ‘High Level In’ red/black speaker terminals.
- Run single RCA from the ‘Sub Woofer Pre-Out’ to each tower ‘Optional LFE In’ yellow RCA jack
this is what I’d probably run, fairly simple, but assuming everything works, should sound really good
Setup 2 - 5.1 channel, Definitive towers + center speaker + Boston surrounds, larger room for surround sound
- this will require running speaker wire around the room, if you don’t want to do that, or it’s not feasible, then skip this
- connect the towers like in Setup 1, but the addition is speaker wire from the Rear and Center terminals on the receiver to the corresponding speakers.
Setup 3 - 5.4, Definitive towers + center + Boston surrounds + Boston sub; the maximalist setup
- This is kind of overkill, but is also an option if the Definitive tower subs don’t work. This is the same as the Setup 2 above, but add another set of speaker wires from the ‘Front B’ terminals to the Boston subwoofer speaker terminals. This setup you can turn on/off the Boston sub by toggling Speakers A only (sub off) or Speakers A+B (towers + Boston sub); the Speakers B mode will turn off the towers but have the Boston subwoofer playing.
Hopefully this isn’t an overload of information XD, let me know if you have questions