Double Bass New Acoustic Image 'DOUBLESHOT'

[rickwolff]

Rick,

Nice videos with the e609! Have you tried it with the DS yet? I’d be curious.

Thanks for you desire to experiment.

Thanks, Mike.

I haven't yet tried it with the DS but I will do that.

 

[Ric Vice]

Actually, Ric, the Shuttle DOES have a low-cut filter. However, it is not adjustable. That seems to be something that Jeff Genzler believes in as he also included it on my Genzler Acoustic Array Pro. I think that is why I have had much better success with that amp in a particularly boomy room I work occasionally.

From the owners manual:

INPUT – The SHUTTLE 3.0® is equipped with a standard ¼” unbalanced input. The input sensitivity range is from 80 mV to 1.6 volts. The input impedance is >500K ohms. The input stage contains a precision high order active high pass filter (more effective and less intrusive than the more common 6 dB filters) and an “RFI” filter (radio frequency interference) to eliminate unwanted noise. The input gain stage consists of a feedback type variable gain circuit that provides wide range, continuously variable gain with minimal noise. The preamp contains a FET input amp circuit based on our highly regarded GBE series touring amplifiers.


The OTHER issue is how to connect your XLR mic cable to the 1/4 (line-level) input on an amp such as the Shuttle 3.0. I've never tried one but I expect something like this would be necessary and would work.

https://www.sweetwater.com/store/de...rEvp4ToSlZiawkpMXqEaAo08EALw_wcB&gclsrc=aw.ds

In my case with the Genzler AA I don't need it as both channels have BOTH an XLR and a 1/4 inch input (as well as 12v phantom power).

Rick, good to know. I've always liked the sound of the Shuttle's they have a nice warmth because of the FET's in the power amp circuitry. Also it's the only amplifier I've liked the sound of with a 500 K Ohm input impedance that doesn't
sound "tinny" with a piezo pickup. As to the adaptor for the microphone, that raises the input impedance from low to high ( thus it's a impedance matching transformer. I tried one of those devices with several amplifiers and didn't like
the way it altered the sound of the microphone. So, yes it will work, but microphones really need a "microphone input" to achieve the best quality of sound. I suspect if you tried using one of these adaptors into the 1/4" inputs on the
Genzler Gollhur amp you have and switched to the mic input you could hear a difference between the two. Just my take however. I'm picky, if the mic is speced at 48 volts into a ballanced input then that's the way I'll use it.

 

[Karl Kaminski]

^^^ as a "doubler", one of the main reasons ive stuck with AI heads (the mic input with 48V PP).

 

[Ric Vice]

There seems to be a lot of different opinions on what Phantom power voltages should be. The Gentzler Acoustic Array only provides 12 volts while the Headway EDB-2 is 18 volts. Only EA and AI put 48 Volts to the phantom. Grace Designs uses 48 as well.

 

[rickwolff]

There seems to be a lot of different opinions on what Phantom power voltages should be. The Gentzler Acoustic Array only provides 12 volts while the Headway EDB-2 is 18 volts. Only EA and AI put 48 Volts to the phantom. Grace Designs uses 48 as well.

Fortunately for me, the Chuck Israel's mic works fine with the Genzlers 12v PP.

 

[Karl Kaminski]

IIRC, AMT superpre requires 48v PP, a 24v PSU, or 9V batt. Think the in-line pre only uses 48vPP. So the mic may not utilize the full voltage. I even think Marty stated something about the capsule uses 5V?

And Remic req PP but unsure if it’ll run at less than 48v. Anyone know? <Sorry off topic>

 

[Ric Vice]

And Remic req PP but unsure if it’ll run at less than 48v. Anyone know? <Sorry off topic>

I’ve run the Remic at 18v and it worked, but that’s not the voltage Remic specifies. The noise floor increases as you lower the voltage. I also successfully ran the Xlson at 18 volts through the Headway EDB-2, but 48 volts from the Grace Felix was dead quiet, where there was some noise from the EDB-2. Since I don’t own a Genzler, I can’t comment. Not sure you’d ever hear that on a gig anyway.

 

[Mark Gollihur]

Does the amp bracket on the DoubleShot accommodate an Acoustic Image Clarus 2R Series 4 amp?

There is not a "bracket" on the Doubleshot - it has a little pair of rubber bumpers that accommodate the Clarus SL series of amps, and the amp sits comfortably and reasonably securely into that little spot.

The full-size Clarus amps do not fit into that spot, however. But you can quite inexpensively get a Chief bracket that works splendidly, and is small and easy to transport:

 

[bassically_eli]

There is not a "bracket" on the Doubleshot - it has a little pair of rubber bumpers that accommodate the Clarus SL series of amps, and the amp sits comfortably and reasonably securely into that little spot.

The full-size Clarus amps do not fit into that spot, however. But you can quite inexpensively get a Chief bracket that works splendidly, and is small and easy to transport:
View attachment 3592693

What's the best way to use two DoubleShots? Is either bracket sturdy enough to stack them? I've been wondering how double DoubleShots might perform in really loud situations. Sorry if this was already addressed in this thread.

 

[Sean Riddle]

What's the best way to use two DoubleShots? Is either bracket sturdy enough to stack them? I've been wondering how double DoubleShots might perform in really loud situations. Sorry if this was already addressed in this thread.

Since there’s only a 4 ohm version of the Doubleshot right now I don’t think a double Doubleshot is a reality.

 

[Keith Rawlings]

There is not a "bracket" on the Doubleshot - it has a little pair of rubber bumpers that accommodate the Clarus SL series of amps, and the amp sits comfortably and reasonably securely into that little spot.

The full-size Clarus amps do not fit into that spot, however. But you can quite inexpensively get a Chief bracket that works splendidly, and is small and easy to transport:
View attachment 3592693

This is the way I'm going to go then. I've just about convinced the wife that I need one of these little beauties to pair with my Clarus amp.

 

[Mark Gollihur]

What's the best way to use two DoubleShots? Is either bracket sturdy enough to stack them? I've been wondering how double DoubleShots might perform in really loud situations. Sorry if this was already addressed in this thread.

I don't know if stacking them would offer a particular advantage. They aren't really designed for it, so you'd need to create some sort of means to do it securely. I'd probably spread them apart a few feet if the stage setup allowed; that would provide the biggest sound, IMHO.

Since there’s only a 4 ohm version of the Doubleshot right now I don’t think a double Doubleshot is a reality.

The Acoustic Image heads will safely drive 650w at a 2ohm load, so it's absolutely do-able. (So will the EA Doubler, for that matter).

 

[Sean Riddle]

The Acoustic Image heads will safely drive 650w at a 2ohm load, so it's absolutely do-able. (So will the EA Doubler, for that matter).

Oh boy! Once I try one out and if I stick with it (I imagine I will) I might have to look into this.

 

[Karl Kaminski]

Wow, what kind of double bass gigs are you guys playin’ to need two? (Maybe outdoors without PA)

More to the point how loud are your gigs to need two of these in a club? The volume alone would turn most uprights into a fog horn...

BahWhaaaah!!

 

[bassically_eli]

Wow, what kind of double bass gigs are you guys playin’ to need two? (Maybe outdoors without PA)

More to the point how loud are your gigs to need two of these in a club? The volume alone would turn most uprights into a fog horn...

BahWhaaaah!!

As far as upright gigs, I would not expect to ever need two, although I do play some pretty loud outdoor gigs with a couple of 18 piece big bands. I was thinking more for bass guitar with rock/pop/funk/etc. bands. My main hesitation with the DoubleShot is I feel I'd need a separate rig for BG--well, for my non-jazz bass guitar activities.

 

[Sean Riddle]

Overall I've decided that around January I'm gonna place an order for a Clarus SL 2 and Doubleshot combo. One thing I'm curious about though is if anyone has played a 5 string double bass with a low B through the Doubleshot yet? I don't have one at the moment but may be getting one made later next year, so I'm just curious how well the Doubleshot could amplify that low B.

 

[lurk]

Heard a friend play his 6 string electric bass through one in a Latin jazz group. Low B was clear and tight. No woof or wobble.

 

[shwashwa]

Are the 10 inch speakers full range with the addition of the midrange driver? Or are they crossed over with the mid-range driver. I think I might prefer it if their full range with the additional midrange driver rather than being crossed over

 

[shwashwa]

Actually I see that the website says it's crossed over

 

[bassically_eli]

Actually I see that the website says it's crossed over

Interesting it does indeed say two-way crossover. The whole point of the side firing drivers is to achieve omnidirectional sound, so I guess the 10s must be crossed over pretty high? They are "full range" type drivers. Regardless, I'm sure AI has their reasons. Are you looking for a bit of mid bumpage, or just more high end spread around the bandstand?