Summit Audio TD-100/DI thread (split from Ohio belchfest thread) - Page 11

bribass · #**201** 07-23-2007, 09:38 PM

Quote:

Originally Posted by bolo

One or more of the Radial DI boxes might have this feature, if memory serves. This actually might be touched on earlier in this thread, but I don't have the bandwidth to go back and search for it at the moment ... Your clinking glasses made me thirsty.

I remember reading a few days ago that TBer fdeck has built a simple impedance varying device and is close to selling them. I'd be interested in this as well.

Bolo I'm enjoying a Hoegaarden right now. My favorite summer beer.

Edit correction: That device by fdeck is a pre amp/adjustable hi pass filter. I do not think it variable impedance. Review of new pre-amp/high-pass filter

BG

Joe_Atlanta · #**202** 07-23-2007, 11:06 PM

Quote:

Originally Posted by bolo

One or more of the Radial DI boxes might have this feature, if memory serves.

It does serve. They call the adjustable input impedance feature "Drag Control" and incorporate it into several of their products. They've also started marketing it as a separate mini box, aimed at guitarists who use wireless systems.
http://www.tonebone.com/tb-dragster.htm

Joe

bongomania · #**203** 07-23-2007, 11:56 PM

Additionally, Barge Concepts ( http://www.bargeconcepts.com/ ) has installed variable-impedance buffers into their blender-loop pedal as a custom-order feature. A couple of guys in Effects [BG] have those customized buffers, and like them quite well. Understanding of course their needs and tastes may differ from the DB crowd... but you could presumably have Barge make a pedal with two inputs, connected to two separate variable-impedance buffers, which could then go to two outputs and/or be summed to one, to progress into whatever preamp(s) you like.

bolo · #**204** 07-24-2007, 08:54 AM

Joe, thanks for pointing that out about the gear from Radial. I hadn't seen that new mini-box yet. Could be interesting w/ a piezo p/u perhaps.

Gonna try it out for us Jason? It might could be brilliant ... perhaps.

I just read about an onboard preamp for EB from Audere Audio that has trad EQ plus a 3-way adjustable impedance switch. There is a review in the July 2007 edition of BP.

Joe Smithberger · #**205** 07-24-2007, 04:11 PM

Actually, I have a Dragster box. It's not quite the same as what the TD-100 gives you. I think it would be fine for converting a low impedence input to a high impedence. Can someone with a clue chime in about the science please? Come to think of it I never tried it with my GK. I bought it to tweak the input of my AI Focus like we did with the TD-100 at the aformentioned time of belching, but it wasn't all that dramatic. It's been sitting in a drawer.

bongomania · #**206** 07-24-2007, 04:45 PM

Quote:

Originally Posted by bolo

I just read about an onboard preamp for EB from Audere Audio that has trad EQ plus a 3-way adjustable impedance switch. There is a review in the July 2007 edition of BP.

There is a pretty vast amount of discussion of the Audere over on the BG side of TB, it's worth reading. I owned one, and while the impedance selector is "interesting" and maybe useful depending on your tastes and application, it is basically just three preselected output impedances; very different from the fully variable up-to-2Meg input impedance of the TD-100 (which I also have, and compared directly). On the plus side, David at Audere is happy to talk about his technology, and perform some customization of his preamp for specific buyers. I didn't like the Audere pre personally, but as far as I can tell, I'm the only one.

Jason Hollar · #**207** 07-24-2007, 08:23 PM

Paging Dr. URB! We need some calculations over here!

Anyway, all this preamp business got me digging around in the bass goodies closet.

I dusted off this Art Tube MP preamp I bought real cheap over a year ago -- intended to be used as a mic pre (for bass and/or vox) with this JBL speaker I have. I think I read something about this thing in this post several pages back...

I read in the manual it has a "high fixed input impedance" which is listed at 1meg Ohm.

So, I guess this is pretty much hitting the nail on the head right?

The sound is just fine...the thing has gobs of gain and some handy features like a 40Hz filter and a limit button for regulating output. It sounds perfectly clean running into my various amps.

I think I'm going to try this for the next few gigs and see if it makes any difference in the trenches: 2 straight ahead upright jazz gigs Fri & Sat...will report afterward.

It didn't make some holy grail difference in my tone...but I can see that it may very well give me a lot more gain to work with. My amp seems to like it...as I don't have to turn it up near as much as before. There's also a gain "drive" knob which cranks up the tube pre...and that does make a difference in the "warmth" dept.

bribass · #**208** 07-24-2007, 09:26 PM

What about this ART product? It has variable impedance.

http://www.artproaudio.com/products....79&cat=1&id=99

bongomania · #**209** 07-24-2007, 09:36 PM

As very cool as that looks, it looks like it only goes from 150 ohms to 3K z in.

**Jeremy Allen** · #**210** 10-26-2008, 11:11 PM

Can't resist bringing this back up...
Any new developments? Anybody try both the Summit and the Avalon back to back in a mini-belch-a-thon? Is Unkie Toad still not using his Summit live with the Focus?

I've finally started coming back from the precipice of using just a mic (Heil PR40), which is awesome BTW, to consider blending in some pick-up signal. I've purchased three Full Circles (my favorite PU) in my life and through fate and circumstance am in possession of none of them, so I'm stuck with the Realist (which sounds terrible through the Clarus/Wizzy most of the time) and the Underwood (which is horrible but which sometimes adds just the right thing to a mixed signal); I sometimes fantasize about Dave Holland's live sound, a mix of Underwood+tube DI (Retrospec--yeah, good luck) and microphone, and think that a good preamp would help with the pickup end of things. (I currently have fdeck's preamp/HP filter velcro'ed to my old, trusty, great sounding Sadowsky outboard preamp, but I suspect it's not quite the same thing). Maybe I'll throw some more gig money at a situation residing primarily in my fingers!

Barcza · #**211** 11-06-2008, 01:23 PM

Unfortunately I don't tired the Summit TD-100, but my sound engineer friends say the Summit products are extreme quality just like Avalon. The Radial has the JDV Mk3 Super DI with variable impedance to 3.9 Meg-Ohms and tons of features. The Radial make one of the best quality passive DI boxes on the market. I know the manufacturers of piezzo transducers like Fishman, recommend very high impedance input, but the 10 M ohms inputs are doesn't works me perfectly because I feel I lost my dinamic and nuances of my playing. So I think an 1 M ohm input is enough for Fishman Full Circle, if you have a good instrument.

Peck_Time · #**212** 02-15-2009, 03:09 PM

I've just ordered myself a TD-100. It should be perfect for most of my gigs- I plug my pickup straight into a DI with no amp, just foldback.

I was using a mic only for a couple of years, but moving to a pickup cleared up the sound considerably. Plus normally there are 20 open mics on-stage, and the last thing the sound-person worries about is my precious bass sound!

**Jeremy Allen** · #**213** 02-15-2009, 03:29 PM

I look forward to hearing how it goes with the TD100. I've been very happy with an Avalon U5 since last October, and I have a Summit 2BA-221 coming this week (which I will use with the mic--it has variable impedance on the mic input and a high pass filter, and I think that'll be about all I'll need running into a Bergantino IP112 when I want to use a mic).