Vintage SVT bridging ch 1 & ch2? Ok?

michricker · #1 08-30-2010, 04:35 PM

Hi. I recently saw a YouTube video on bridging channels 1&2 at the input and then plugging in your bass cable into one of of the remaining inputs. I have a 71 SVT and wanted to get some feedback before trying and also wanted to get your feedback on the best way of bridging if is is safe for the amp. Thanks

bassboysam · #2 08-30-2010, 05:27 PM

It is perfectly safe. I have used it with a splitter to send a dirty signal to channel one and a clean signal to channel two and then adjust the two volumes to get a nice mix.

michricker · #3 08-30-2010, 06:13 PM

I just tried it. Wow I understand why this head is king. Amazing through an NV610

Plstrns · #4 08-30-2010, 08:52 PM

That's not bridging. Bridging is combining 2 output stages, doubling voltage to increase headroom.

You are using 2 channels as 2 pre's to increase gain. No biggie

MAMMOTHvolume · #5 08-31-2010, 04:48 AM

Quote:

Originally Posted by Plstrns

That's not bridging. Bridging is combining 2 output stages, doubling voltage to increase headroom.

You are using 2 channels as 2 pre's to increase gain. No biggie

you can bridge input stages to.

blastjv · #6 08-31-2010, 07:14 AM

I think we're just talking semantics here (though screwing up your terminology can lead to BIG mistakes, so semantics ain't nuthin'!!!)

When you are 'bridging' the inputs it is usually referred to as 'jumping' or 'jumpering', bridging typically refers to an amp which has 2 output stages (basically 2 amps in one casing) which can often be 'bridged' to essentially form 1 BIG amp.

Regardless, I've been experimenting with jumpering the channels on my SVT-VR (essentially the same as a vintage SVT, at least in this regard) with great results. I'm not sure what I will end up doing in the end, but it's fun experimenting.

- I love the sound I get on channel 1
- I REALLY love the sound of the two channels together
- I haven't tried splitting the signal and sending to both yet, but I plan to
- I can get a good, but not great sound with just channel 2
- I have tried using each channel separately and using channel 1 for my 'clean' sound and 2 for my OD sound, not sure on this yet
- You can also get different sounds depending which channels you jump and which get your input (ie: input in Normal 1, jumper across Bright 1 and Normal 2 vs input in Bright 1, jumper across Normal 1 and Bright 2, etc...)

FUN!!!

-John

Groover · #7 08-31-2010, 07:36 AM

Subscribing

slick_tu · #8 08-31-2010, 07:36 AM

Can someone post a link to that YouTube video? Thanks.

Rickett Customs · #9 08-31-2010, 07:38 AM

http://www.youtube.com/watch?v=L8bkCn14b6Q

taurus1 · #10 08-31-2010, 10:13 AM

I believe "jumpering" is the right term.

ampegfuzz · #11 08-31-2010, 10:36 AM

So does this produce more grit/dirt or just extra eq options?

blastjv · #12 08-31-2010, 10:40 AM

I'd say more tonal options, with a tendency to sound a little 'fuller' or 'wider'. I don't think it overdrives any faster (meaning at lower volumes), but that's not really what I was shooting for, so I need to experiment further.

-John

Rickett Customs · #13 08-31-2010, 10:46 AM

Quote:

Originally Posted by ampegfuzz

So does this produce more grit/dirt or just extra eq options?

The 2 channels do sound somewhat different. But doing this also gives you access to another set of tubes in the signal path, along with eqing options.

However, I do mine slightly different.

I use the VT deluxe, run the "output" to channel 1. I run the "through" output to channel 2. Channel 1 is affected by the VT, channel 2 is a dry signal, then I can mix the 2 channels together.

You can also do this with your favorite distortion or overdrive too, just go into channel 1 clean (bass straight in), out of channel 1 high into the od/dist and back into channel 2, then mix it.