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ACG 9 STRING!!

7string

7string

Jul 7, 2005
1,309
3
53
Glasgow, Scotland, UK
#1
I'm extremely proud to announce that I am having a 9 string bass made by ACG www.acguitars.co.uk.

We've been working on the spec for this bass for the last 5 months or so, but we decided only to announce it when some progress has been made. Now that the neck blank has been assembled, it's the right time to tell all about the instrument.

As you can gather from my username, I own a 7 string already and I'm having an absolute blast playing it. Everything is possible from 'meat and potatoes' bass through to chordal and solo ideas. I really love having all the options open to me, so started to look in possibility of 9 strings. To me, this is about as far as you can go whilst still having a useful and playable instrument. I know that some have gone to more than 9, but I'm stopping here!

I could see how having a low F# (or even a low E) could be used to bolster basslines and how an extra string on top would give even more range for chordal and solo ideas. This bass isn't meant to be a one-trick pony or only to be played on special occasions, it's an extended range bass which must deliver great tones across it's whole range and have the playability to match.

I sent out some e-mails to builders in the UK and abroad, receiving back fewer replies that I expected. Alan at ACG is only about 50 miles away from my home in Glasgow and was really enthusiastic about this build. I'd been down to Moffat a couple of times before, had played his basses and was really impressed not only by the basses, but by Alan's easy-going personality, work ethic and openness to any ridiculous idea that I came up with!

Many e-mails were sent to and fro and after a couple more visits, we had the spec agreed. Here it is


CONSTRUCTION

Recurve Single Cut body style
Set-neck
35" scale
Swamp ash body
Black veneer
Mahogany top
Swamp ash cavity cover

7 piece maple/wenge neck
Acrylicised spalted fingerboard
24 frets
Mahogany headplate
Wenge backplate
Black headstock veneer

77mm at nut

Flat fingerboard radius
M.O.P. side dots
No front dots



HARDWARE

Hipshot Type A bridge fitted with piezos
Hipshot Ultralite tuners
Black hardware



ELECTRONICS

ACG pickups
ACG Pre-amp
Ghost PE-0340-00 Acousti-Phonic mono/stereo bass preamp



CONTROLS

ACG Pre - Volume/balance stack knob
ACG Pre - Filter/peak stack knob
ACG Pre - Treble stack
ACG Pre - Filter/peak stack knob

2 way mini toggle switch - Controlling bridge pickup - Series / Parallel
2 way mini toggle switch - Controlling neck pickup - Series / Parallel
Ghost PE-0111-00 Quickswitch (for Acoustic-phonic pre)
3 position switch which selects between magnetic / piezo / or both

Ghost PE-0206-00 Push/push mid boost volume control



OUTPUTS

Stereo 1/4" output
John East XLR output



I decided upon a set-neck as it seemed a good compromise between a thru-neck and a bolt-on. To me, 9 string singlecut bolt-on's have a fair amount of metal joining neck and body and so the coupling between the pieces may not be as complete as it should be (just my thoughts !). I have a thru-neck already and as Alan makes a fair few set-necks this seemed a different and exciting way to. The neck is the great blend of maple and wenge.

ACG9neckblank.gif


The body is going to be made of light, but tonally great swamp ash and be topped with an extraordinary piece of mahogany.

ACG9core.jpg


ACG9top.gif


The fingerboard is another extraordinary piece of timber. This is a spalted maple fingerboard. Problem is that wood is usually too brittle to be used as a 'board, so it has been through an acrylisation process which injects monomers into the wood, making it hard enough to be used as a fretless fingerboard if required.

ACG9board.gif


We did tinker with the idea of making this a MIDI bass as well, but due to a recent change in my recording setup this proved not to be needed. We did keep the piezos though which will add another dimension to the sound. The Ghost preamp will handle the piezo signal.

Amazingly, the ACG filter-based preamp (which has to be used to be believed) actually responds down to just 20Hz, so it easily copes with the 23Hz F#. Nothing on this pre-amp has to be adjusted to cope with the super-low note. A real tribute to Alan's design.

Thanks for reading the beginning of this build thread. I really looking forward to seeing this progress and can't wait to get my hands on the finished article.
 
#7
good luck with the project man, I've tried 9 and 7 strings, my jerzy was great but it's on it's way to a new master, I tried but can't feel confortable with that much strings, and didn't grew fond of the high F.
Still I'll always love seeing new ERB's pop out! :bassist:
 
#9
Is this bass going to have a variable length scale, like a Dingwall?

If not, wouldn't playing the higher-pitched strings be akin to playing a cheese slicer? I'd imagine the tension would get pretty high at 34" on that high A# string.
 
#10
Jjango said:
Is this bass going to have a variable length scale, like a Dingwall?

If not, wouldn't playing the higher-pitched strings be akin to playing a cheese slicer? I'd imagine the tension would get pretty high at 34" on that high A# string.
Click to expand...

Having a 35" scale 6, I don't know if you'd be extremely pleased with the upper register. Without a doubt, the lower register will be MASSIVE. You could potentially get away with tuning to guitar intervals so the string wouldn't be so tight and lack proper umph.
 
#11
The bass is going to be a constant 35" scale, but I've no worries about the sound or feel of the higher registers.

I did have a Yamaha TRB6 II which had a 35" scale. It wasn't the scale that I found the problem, but the string spacing. I sold it on and had my Conklin GT7 de-fretted to fill the void !!
 
#14
I spent a bit of time with the last 9 string I built which was also 35" and did not find any problem with the upper strings either with the tension or the sound they made. This was the first real ERB I had made so in fairness I don't have a huge amount of experience in this area but I was not aware of any problem. There are quiet a few examples of 35" scale ERB's and I have not seen any complaints about them. The last one has been with the customer and he seems to be happy with the bass.
Sei24 if you are going by my neck of the woods I would like to see your 9 it is always a pleasure to see Martin's work in fact I hope to catch up with him this month as I will be down in London.
Cheers
Alan
 
#15
Alan, let me know when you are going to be in London and I will try and meet up with you. Whilst Martin has finished my SEI 8 string fretless, the SEI 9 fretted has yet to be built (I placed the order only about 3 months ago).

Anyway, enough hijacking and back to 7's lovely looking ACG!
 

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