Ampeg SVT II Non-Pro Glorious and Question
I am fairly new to the Talk Bass forum and finally have a reason to post something. Also have a question but will get to that.
I scored an Ampeg SVT II (non-pro) in near perfect condition and for an incredibly low price (I think).
My question is both amp and cab related thus not sure where to post the question (amps or cabs forum).
I am looking for a smaller cabinet that has a decent power output and awesome tone that would go well with my newest "tube glory" amp. Was thinking of a single 15" cab (or something along those lines) that would eventually partnered with another cab for larger venues. Any thoughts? I have been told non-ported cabs go better with tube camps in general but not sure if that is true and if there are allot of options. I am moving toward a 5 string bass in the near future if that plays into cab choice.
I know that "good tone" is subjective but I am looking at getting a starting point for my bass cab search.
Also! Any other good "forum sections" within TalkBass to post the news of my wonderful find in the Ampeg SVT II non pro? It would be nice to share my excitement and pics with anyone that might be interested.
Upgraded my membership but not able to upload images. Error message stating "security tag" is missing and to inform administrator. Is this because I just updated payed for membership a couple hours ago?
Some of the best single 15" ported cabs made.
You just got that on ebay didn't you? I saw one on the other day for a buy it now of like $500 in great shape.
Nope, from a local guy off Craigslist and for less than the "buy it now" that recently sold on eBay. Not trying to brag, but I scored. The guy had it listed on our local CL for $500 and drastically lowered it after a few days without any offers. That was a good deal though on eBay and thus why it disappeared fast. If you check auction history on eBay they typically go for $800 or more with a normal bidding auction. Do you know anything about them? Any suggestions on the cab I am looking for?
The challenge with SVT heads is the ohm limitation of 2 or 4 ohm. It's challenging finding 4 ohm single-driver cabinets.
I had one with an Ampeg 610hlf one of the bad years, I didn't like it with it, & they are ported cabs. I've heard that others like them & it will go lower so for a 5 string might be worth considering. I think you'll get a lot of recommendations for 810's, bergantino's 610 etc. I had an 810 with an SVTCL years back & I definitely preferred that cab with the SVT. Ampeg has some new cabs for the V4B reissue would look into those as well. Congrats on a killer amp, I've had that amp & the same preamp in the SVT2P & SVT3 non pros & that preamp is great, didn't even use the graphic much if at all.
Congrats on obtaining what is, IMHO, one of the best bass amps ever created.
I own an SVT-II non-pro, and I play it through a Bergantino NV610 cab. It's a match made in heaven. Awesome tone, awesome punch, and the NV610 is, IMO, much easier to schlepp than the 8x10 fridge cab I owned 10 years ago.
If you prefer 15" speakers, I would recommend the new Bergantino NV115, but you would need two of them for a 4 ohm load.
Yep MUST be 4 or 2 ohms only for SVT's.
So, find Either a 4 ohm 15" cab or (what I'd do) find a 4 ohm 2x12 (sealed cab if possible) then get another the same for a 4 x 12 STACK!!!!
Another TB'er recently had LDS build hima a sealed 212 cab iirc. I'll try find it for ya
Can't go wrong with any of Don's builds!
Good info! Thought I might have trouble finding a small cab at 4ohms. I know these amps are not really designed to be played at lower volumes. Well, the cab search begins. rodl2005, the 2X12 at 4ohms sounds about right. Let me know if you find a sealed 2X12.
Congrats, one of the best amps ever made. An SVT with a lot of good updates.
Re sealed 2x12
Check out LDS Low Down Sound Web site. Probably quicker
I'll buck the trend and say that you can run an SVT into an 8 ohm load. I've had no problems running my 2-Pro into 1x15 8R RoadReady cab. In my case the speaker reaches it's limits before the amp does. If I need to run the amp hard, I will use a 2x15 RoadReady 4R cab. To push it really hard, I'll use 3x15 on the 2R tap. No problems.
I've done it too, although only with my own stuff accidentally, and as long as you're running fairly quietly, not usually a problem. Start pushing it and that's where the trouble usually starts.
I gigged with an SVT head back in the mid 70's until the early 80's. I played in loud hard rock bands, and much lower volume traditional country gigs. It always sounded great, no matter what the volume.
I used pretty efficient speakers, usually EV SRO's and even loud, I don't think the head ever broke up.
Find a used DR Bass Cab. Mine is a 4ohm cab rated at 600 watts with an adjustable tweeter. Sounds huge and very small footprint. I run it with my SVT 3 Pro, but have also run it thru a Fender SVT II Pro and a Fender Bassman 300 Pro.
Busting the Myth about 8-ohm Loads being Unsafe for an SVT
Running fairly quietly isn't even something to worry about. I don't know where this myth got started that you can only run an SVT at 4R or 2R -- but it's a fairy tale. The SVT can handle a 2:1 mismatch just as well as any other tube head. People do it with Fenders all the time. The SVT isn't any more likely to break under a mismatched load condition than any Fender.
Some people are looking at the back panel of an SVT and observing the lack of an 8R tap on the impedance selector, and they're making the mistaken assumption that there is no 8R tap on the selector because 8R represents an unsafe operating condition. That's a totally false conclusion that leads to fairy tales like this one, that the SVT isn't stable into an 8R load. This fairy tale needs to be dispelled.
Why isn't there an 8R tap? Easy: The SVT was originally designed in an era where there weren't any good drivers that were capable of handling any significant amount of power. Back in the day there weren't any 4R or 8R speakers that could handle the SVT's 300W power rating. To get a speaker array that could reliably handle the SVT's full 300W output, Ampeg had to use a boatload of 32R guitar speakers and wire them in parallel. It took enough drivers to do that that they ended up with an 8x10 at 4 ohms or a 16x10 at 2 ohms. They didn't bother to have an 8R tap made for the transformer because there were no 8R parallel speaker arrays that could handle the power.
What's interesting to remember is that back in the day, Ampeg wouldn't warranty the 8x10 cabinets against driver failures with an SVT unless you used TWO of them for a 2R load. Back in the days of the original drivers they wouldn't warrant a single 8x10 array against burned voice coils if you drove it with an SVT. You had to use 16 speakers to dissipate the power or there wasn't any warranty coverage.
The reality of the situation is that the SVT didn't come with an 8R tap because when the amp was designed there weren't any 8R cabinets that could handle the power. The absense of an 8R tap has nothing to do with any lack of stability of the amp into an 8R load. To suggest that the amp can't handle an 8R load is hogwash.
What happens when you plug an 8R load into an SVT into a 4R jack? Exactly the same thing that happens when you plug an 8x10 4R cabinet into the amp, but have the impedance selector set to 2 ohms by mistake. Try it. Drive it full-tilt. Nothing bad is going to happen to the amp. I've done it both ways -- accidentally gigging with the 4R cab and the selector on 2R, and intentionally running an 8R cabinet with the selector on 4R.
Doing this is totally safe. The reason for this is that operating at a 2:1 mismatch doesn't hurt the amp -- it only serves to displace the amp's operating position on the tubes' power vs. load impedance characteristic. By pushing the load impedance up high, the worst thing that will happen is that the amp will produce less power than it would put if the output impedance was properly matched to the "optimal" load. load. Nothing bad will happen.
Although the amp will deliver less power into a mismatched load than it would deliver into the optimal load, you don't have any risk of burning up the amp as long as you're driving a set of speakers. The speakers, even at a 2:1 impedance mismatch, still provide a sufficiently reactive load to absorb any possible flyback voltage peaks.
Just don't try doing this mismatch thing into a purely resistive load, like an attenuator. A non-reactive, purely resistive load can cause real problems.
To the OP: don't worry about it. Run an 8R cab if you want to, with the amp set to 4R. Just be aware that the amp's power output will be less than if you drove it into the optimal load it was designed for.
Great info. Thanks for taking the time guys. Got a couple pics here without the top on. Rack handles were removed to fit in current rack.
I will look into the suggested cabs and use the amp with my current 8ohm cab until I can upgrade.
Let me know if you have any more:cool: suggestions.
The SVT II also came with the rack you see plus the dbx compressor and power strip/light. Really made for a nice almost complete rig.
|All times are GMT -6. The time now is 09:16 PM.|
Powered by vBulletin® Version 3.6.12
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd.