Currently Being ModeratedJun 17, 2010 7:46 PM (in response to MrTheEdgeSTB)Re: Spider II HD 150 on Crate GX412XS (1997)
Wow! What a shame that I cannot get a response here. Even the Line 6 service center that I called locally, when posed with the question, said get a second cab and run one channel to each.
So, after much research, I shall answer my own question, and share my findings to others with a similar curiosity or dilemma.
The short answer is - no, you cannot run the Spider II HD 150 on the 1997 Crate GX412XS cabinet as is - the cabinet must be modified. I found a really useful site that discusses in great detail the diffrerences in 4x12 cab setups, wiring diagrams, how to go from mono to stereo, etc. Great articles!
Combine that with my own efforts - pulled the back off my cab and had a look - took a bit to sort out the wiring of my speakers with the diagrams I found (I'm no electrician, so it's all a bit arcane to me), but with perseverence was able to sort it out. Based on this link (first of many that I will post here):
...and comparing the wiring and actual speaker components in my cab, mine is 4 - 8ohm speakers in Series-Parallel, giving a mono 8 ohm load across any one channel. In fact, further research indicates that (barring a very specialized setup - I'd love to see how the Spider Cabs are configured) it's impossible with 4 8ohm speakers to get a stereo 8 ohm load (8 ohms in each channel). You can get 4 ohm load (2 speakers in parallel wiring) or 16 ohm load (2 speakers in series wiring) - that's it!
Now based on this link (http://line6.com/community/docs/DOC-4410) the latter configuration would work, but with a perceptable loss of volume, which would only matter really depending on the style of music you're after. As my own playing is more of an ambient/rhythm style, this is insignifcant.
So - I can reconfigure the Crate GX412XS cab to a stereo/16ohm setup and run the Spider II HD 150; but then I can't run my old Digitech/Marshall setup unless I start running that in stereo as well - vote's not in on that one yet. Or, I can get a DPDT switch and turn it into a switched 8ohm/mono // 16ohm/stereo cab. All for fairly cheap.
And maybe someday I'll scrape up enough again to swipe a Spider IV Cab - we'll see.
It is a shame that a novice like myself would have to find all this out the hard way, but hopefully this will be of assistance to other poor souls looking to not ruin their music gear investments.
Other links, just for kicks - it's really a great site!
http://www.colomar.com/Shavano/stereocab.html (nice commentary on the rationale for a stereo single-unit setup, and frankly one that resonates with me)
Currently Being ModeratedJun 29, 2012 7:18 PM (in response to MrTheEdgeSTB)Re: Spider II HD 150 on Crate GX412XS (1997)
Thanks for posting this, you have helped me. I just bought a spider II HD 150, and a crate GX412XS cab today at a pawn shop. Not because I needed another amp, but because it was so dirt cheap. They were giving it away basically because it had been there too long. I got the head for $75, and the 4x12 cab for $60. That's out the door, no tax.
When I tried it at the pawn shop, they just ran one channel into the cabinet and it worked fine. Of course no stereo that way, but it sounded good. Also, with a solid state amp, it doesn't hurt it to run with nothing hooked to the output jacks, like it does with tube amps. The two are totally opposite in that regard.
The links will come in handy....thanks!