Looking for information on my Perspective speakers

Thanks for that holmz.  I've been working at the battery/DMM stuff and will try to distill the results to a simple story.  Maybe you can help me understand the matrix then!   Cheers

Here are the test results...

Have added some to your list on the left.  

A1/B1  6             A1/B1   6 Ω        B1/C1   0            A1/C1   0             
A1/C1   0            A2/B2   4.5        B2/C2   0            B2/C2   0
B1/C1   0            A3/B3   3.7        B3/C3   4.1        A3/C3   6
A1/A2   0            All vertical combos are zero (eg. A1/B1).
B1/B2   0            Tested with all drivers connected, all nom 8Ω
C1/C2   0            2 x 12" Bass (back to back on cab. sides), 1 Mid, 1 Tw.

What you make of that?  For info A is White, B Black and C Red labelled.

I'm thinking maybe vert row B needs to be bridged if C used.

Cheers

Still looking for help if anyone can explain the input options.  

Cheers

Thanks for that.  I'll see what I can do.

I unearthed an old Levell oscillator in my kit, rigged it up through an amp at low output level as suggested and ran the tests with results listed below.  I judged the speaker SPLs by ear, so some margin for error - to do a more rigorous test would need to get a dB level meter etc.

So.......first, confirming the input layout for these tests:
                                     
                   A                B                 C
1
2
3                
                   White         Black          Red

1.  Using B3 as negative, +ve inputs to either A3 or C3 (in turn) operates the bass units only, at similar sound levels and frequency response, from low Hz to roll-off starting at approx. 3.3 kHz.

2.  Using B2 as negative, +ve input to A2 operates the MR only, with roll-in to good level at 350 Hz and roll-off from 7 kHz.

3.  Using B1 as negative, +ve input to A1 operates the HF only with roll-in to good level at 1 kHz and roll-off >10 KHz.

However,

4.  Continuing with B2 as negative, +ve input to C2 operates the MR only, now with roll-in to comparable level at more like 500 Hz and roll-off from 5 kHz, and

5.  Using column B1 as negative, +ve input to C1 operates the HF but now with roll-in to comparable level at 2.6 KHz and roll-off from > 10 KHz.

To operate all speakers together requires a bridge to all column B inputs (ie. B1-B2-B3) as the common negative input, and bridge either column A (A1-A2-A3) as +ve, or
the alternate column C (C1-C2-C3) as +ve.

And from that I guess one could Bi-amp the bass (Row 3 only) and the (MR HF as a pair) with just the 1 and 2 rows bridged for the latter and providing a choice of crossover as column A or C alternate.

If correct, only a lonely Swiss could devise all that!  Be interested in your thoughts.

 A3 and C3 both have the same speaker phase.  I think it's just a case of 2 on-board crossover options and with individual inputs to each speaker other options for bi or tri amping. 

I tried that!  I obtained an Endoscope camera and tried to view the internals, crossover tec.  - very limited results.  Complex build with 54mm cabinet walls, coss-member bracing, tunnel for midrange, bass woofers connected back-to-back to another brace,   Yet to weigh but expect around 130 kg each.

Lovely piano black finish though and great sound.  But big !