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Double Bass NEW Euphonic Audio iAMP Doubler

#441
I don't want to tell anyone what to do as I'd hate to have you blow up the amp.

I can say for myself, I have the trimpot all the way off (not trimming the input) set that way I can use my DB with Planet pickup, passive J bass, Sadowsky and Alleva-Copollo basses. I have had no issue running the preamp at 100% (5 o'clock) at time when I needed to although I consistently set it to noon, I only move it from there if I run out of headroom on the master. I have run the gain and master full on for 3 1 hour sets with no problems and little noticable degrading of the signal.

Again I'm not recommending others do that...
 
#442
Just spoke with Gary. The design of the Micro and Doubler differs from our older amps. The placement of master volume and mute in the signal chain, you can use the Micro and Doubler without a speaker load. However I would make sure that the master volume is turned all the way down.

Mike
 
#444
I just spent a very pleasant hour and a half balancing the outputs from each of my basses. As they all have trimpots to control the output I figured this was the easiest way to enable me to swap between instruments and amp channels without having to worry about resetting everything.

My reference basses were the Veillette (my main gigging bass) in Channel 1 and the Aria in Channel 2. I set each bass so that the gain was maxed out and then rolled it back until I couldn't hear any more distortion except on the very hardest (and I mean very, so much so I'd never play that hard in real life) open E. This was then my reference point for the Wal in Channel 1 and the Brook in Channel 2, so keeping 1 "electric" and 2 "acoustic". Now, with the amp gain set at noon and the amp trimpots set just past halfway, everything is evenly balanced and clip free.

As an aside, playing all the basses in quick succession made me realise why I love EA amps so much. You really do hear every detail in the sound.

Cheers all

Gareth
 
#445
Mike Dimin said:
Just spoke with Gary. The design of the Micro and Doubler differs from our older amps. The placement of master volume and mute in the signal chain, you can use the Micro and Doubler without a speaker load. However I would make sure that the master volume is turned all the way down.

Mike
Click to expand...

When you say "older", does this mean the Micro300? IE can the older blackface 300 Micro operate without a speaker load (master @ null), or were you referring only to the newer silverface Micro?

I was saving for a Doubler (still am) when I found an incredible boxing day deal on a Micro300/Wizzy 10 set, so I splurged and bought the EA backpack as well. Extremely happy with my little rig :D, but have yet to gig with it.
 
#446
Feral Feline said:
When you say "older", does this mean the Micro300? IE can the older blackface 300 Micro operate without a speaker load (master @ null), or were you referring only to the newer silverface Micro?

I was saving for a Doubler (still am) when I found an incredible boxing day deal on a Micro300/Wizzy 10 set, so I splurged and bought the EA backpack as well. Extremely happy with my little rig :D, but have yet to gig with it.
Click to expand...

I was talking more about the older iAMP 500 and 800's
 
#447
Mike Dimin said:
Just spoke with Gary. The design of the Micro and Doubler differs from our older amps. The placement of master volume and mute in the signal chain, you can use the Micro and Doubler without a speaker load. However I would make sure that the master volume is turned all the way down.

Mike
Click to expand...
That is great to know, thanks!
I'll be trying mine out with a band today.
 
#448
Hey folks,
I put together a two page PDF file with the trimpot/jumper and line voltage info from the manual. They are formatted and sized so that with the excess borders trimmed off they can be taped to the amp. I found myself wanting to change the DI out to Post EQ the other day and thought this info would be handy to have readily available. I hope there is no infringement for doing this. If so I will take it down immediately.

DISCLAIMER:
INCORRECT USE OF THIS INFORMATION WILL DAMAGE THE AMP AND VOID YOUR WARRANTY!!! THESE CHANGES SHOULD ONLY BE MADE BY A QUALIFIED TECHNICIAN!!! YOU HAVE BEEN WARNED!!!
 

Attachments

#449
Good idea! Years ago I took a photo of the front of my iAMP800, printed it on a laser printer and taped it to the inside of the rack cover in which it is installed. I have 'reference settings' that I found most effective marked, all the EQ knob and slider locations. That's my starting point at a gig; I'll adjust as needed to compensate for the room or musical styles.
 
#450
Mike Dimin said:
The Doubler absolutely does 2 ohms. Still 550 Watts

Mike
Click to expand...

i'm assuming this goes for the micro (550) as well?

I would love to rock two Wizzy 10s

----

WOW! I just had a RTFM moment...lol

Yes, the micro runs at 2 ohms as well at 550 watts

I missed that little bit of print in my manual I feel extra smart now... that actually affect a purchasing decision of mine a while back. grrrr.
 
#451
Did a few searches I don't see much mention.

The newer Markbass Tube and Tube 800 seem to have similar features to the EA Doubler. I'm using an LMII now, but I have to carry a separate preamp/blender for my mic. Just to simplify the schlepp, I'm going to switch to something with a dual-input ability.

Plenty of threads about the Markbass 800, but usually in the context of how it compares to the LMII. The MB is class D, whereas the LMII is A/B I believe, so the MB is going to be more like the EA.

Anyone tried both the Markbass 800 and the Doubler?
 
#452
larry said:
Did a few searches I don't see much mention.

The newer Markbass Tube and Tube 800 seem to have similar features to the EA Doubler. I'm using an LMII now, but I have to carry a separate preamp/blender for my mic. Just to simplify the schlepp, I'm going to switch to something with a dual-input ability.

Plenty of threads about the Markbass 800, but usually in the context of how it compares to the LMII. The MB is class D, whereas the LMII is A/B I believe, so the MB is going to be more like the EA.

Anyone tried both the Markbass 800 and the Doubler?
Click to expand...

I don't know that the Mark Bass stuff has a sufficient input impedence to support a piezo pickup. I'm sure of the LMII not sure on the other models your talking about.
 
#453
peterpalmieri said:
I don't know that the Mark Bass stuff has a sufficient input impedence to support a piezo pickup. I'm sure of the LMII not sure on the other models your talking about.
Click to expand...

Good point. MB input impedence is 500Kohm, the EA is 1 Meg Ohm. I have to say though, my LMII sounds great. It's just a pain to add the mic.

The EA also has the variable phase and notch filter.

Decision is getting easier...
 
#454
larry said:
Good point. MB input impedence is 500Kohm, the EA is 1 Meg Ohm. I have to say though, my LMII sounds great. It's just a pain to add the mic.

The EA also has the variable phase and notch filter.

Decision is getting easier...
Click to expand...

The Markbass pre amp has VLE and VPF controls that IMHO aren't very useful with DB. They work great with EB. Those controls alter the pre amp voicing for better or for worse. The EA Doubler was designed and voiced so that you can use both instruments. Channel I is voiced for EB while Channel II is voiced for DB. The Notch, Variable Phase, and Lo Cut are invaluable controls. It also has 48v phantom power. It's a win win pre amp.

Ric
 
#455
Ric Vice said:
The Markbass pre amp has VLE and VPF controls that IMHO aren't very useful with DB. They work great with EB. Those controls alter the pre amp voicing for better or for worse. The EA Doubler was designed and voiced so that you can use both instruments. Channel I is voiced for EB while Channel II is voiced for DB. The Notch, Variable Phase, and Lo Cut are invaluable controls. It also has 48v phantom power. It's a win win pre amp.

Ric
Click to expand...

Thanks for the help. I ordered one from Bob G. Not sure when it will get here - I hope the snowstorms don't hold it up too long.
 
#457
With a handful of gigs using the Doubler under my belt I can say I'm really enjoying the sound and portability of this amp. I've been using it with pickup and miced upright as well as electric.

The tone works for me set flat with minimal EQ tweaking. The feedback prevention features are incredibly useful and to have it all in a 2 pound package is a relief. Great product.
 
#458
I did a recent gig on electric with an ampeg 8x10 provided as a back line and this little amp was unreal, great tone within the constraints of a sealed 8x10 and plenty of volume. How cool was it to walk into the gig with the doubler tucked into my gig bag.

I continue to use my pickup only into the doubler and through a VL208, I have never been happier with my db tone. Now if they could just work in an auto tune function I'd be all set!
 

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