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Old Sunn O))) cab

Oh, wow, thanks. Totally missed that.

The 15" speakers available say "rear-vented." If that refers to porting, I dunno... cause I'm not going to cut holes in the back board AND make a new front baffle board. Any ports, which I'd really prefer not to have as they make things more complicated, would have to be in the front.

The only reason I'm going the route of making a new baffle board rather than just replacing the guitar 12"s with bass 12"s is that two 15" speakers and some plywood will probably cost less than six 12" speakers.
 
you're insisting on not listening to people who are telling you the truth, which is that this is very unlikely to be worth the time and effort, but i'll chime in anyway and say "this is very unlikely to be worth the time and effort."

it's obvious from your posts that you're not that comfortable doing the woodwork, the cab is already beat up and might not stand up all that well to more tinkering, and quite frankly, you can find big, heavy old cabs all over the place for less than the cost of the materials to do this project. they're a pain in the neck to move, and this one wasn't designed for the speakers you have in mind, so while it might work, it might be a total catastrophe.

you have a cool guitar cab in your rehearsal space. you seem determined to turn it into a mediocre bass cab (or worse). on top of all that, as far as i can tell it doesn't even belong to you. if it was my space and my cab, inherited or not, i'd rather keep my sweet vintage sunn guitar cab as-is than let some amateur risk butchering it so he doesn't have to lug his bass rig around.
 
:rolleyes:

At the moment, it's little more than a huge, space consuming decoration. An electrical hazard as well, what with it not having the jackplat for the input wiring. When it's used... mostly by the other bassist who uses it, the speaker cable (to my horror I discovered that until recently he'd been using an instrument cable) is just hanging off the wiring outside the back board.

As far as ownership, it basically belongs to my guitarist. He doesn't use it, as he already has an immensely loud peavey rig, and thinks it would be a good idea to convert it to a bass cab in order to get better use out of it. As it is, it seems that I'm pretty much the only person who cares one way or the other about this cab.

I'm pretty comfortable doing the woodwork, except that I don't have a way to cut holes in a new baffle board.

The plan is to leave the old speakers in the original baffle board so it can be converted back, should the need arise.

I've been leaning towards sealed only because that's easier and I really don't need low end extension at all. However, after looking at the pics of a 2000S cab that edbass posted, it doesn't look that complicated, so I may go that route.

It's somewhat beat up, yes. Missing screws, and the jackplate. However, it's by no means falling apart, the tolex isn't even ripped. It does need some work even if it were going to be used for guitar, though. As it stands, it gets used as a bass cab quite regularly (not by me, I've only used it once), and eventually the speakers are going to blow, if some aren't blown already. I don't know about you, but I'd rather it be a useful bass cab than headed on a path to being a useless albeit cool looking box, because that's what it's going to be if the other bassist keeps using it as it is.
 
Sartori,

Trying to port it like a 2000S cabinet would be difficult and not very effective.

I used to use two 200S cabinets and an SVT amp. These were designed just like the 2000S but only smaller. They had two JBL D140 speakers in each cabinet and sounded great at lower levels. There were no Theile-Small parameters when they were designed and a Sunn 2000S amp only put out 120 watts RMS so there was little danger of blowing the speakers. With the SVT amp and 300 watts the speakers were "tortured" because the ports were too large to dampen the speaker excursion.

I sealed the cabinets and lost most of the bass response because there was not enough internal volume for TWO 15" speakers.

Finally, I had a speaker cabinet maker use the T-S parameters of the JBL speakers and port the cabinet properly using tubes. The were great, relatively flat sounding cabinets but by that time I was tired of carrying an SVT and two 2X15 cabinets.

I think you would have a good cabinet if you decided to go with two 15" speakers (JBL, EV15L or Eminence) but I would highly recommend having it tuned properly.

I love the look of those old Sunn O))) cabinets!

Gale
 
Thanks. It is a pretty huge cab, definitely twice the volume of my 1x15, so I think with the right speakers it could be really cool. I'll need the speakers to be capable of handling 400 watts together because I like to drive my amp.

I'll be keeping the original speakers, so it can always be returned to being a 1200s cab if it doesn't work.
 
Hi, I've been browsing forums looking for a 6x12 for guitar.
I have the same Peavey cabinet in that craigslist post at the top of page 3 with Eminence Gamma and Beta speakers (rated at 300 watts each) I use to play bass though. (with the stock grill as well)
I know it's not very realistic with shipping rates what they are but I'd gladly trade it for your 6x12, empty or with the speakers.
Maybe you could see what the guitar player thinks about doing such a thing?
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Awesome, I definitely understand.
I've been thinking of doing the exact opposite, making a new baffle for a 2x15 to house 6 12's but all the ones I've found are just slightly not tall enough.
And it seems like if it didn't go just right I'd have quite a mess on my hands.
 
If you want loud and low bass, either get an EMPEROR cabinet, or build a fearful.

This sunn will sure do the "vintage" tone, but you might want to keep looking if your doing the whole STONER metal thing.

Its hard to say, if i recall, there was the Concert 2x15, which was smaller, and the 2000s 2x15. Its nearly impossible to tell without dimensions.

Price? $150 tops, in MINT condition.