Aria - AUM-1 Ultra Metal  [schematic]

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Aria - AUM-1 Ultra Metal

Postby Bernardduur » 08 Jul 2008, 20:56

Had one today under my hands...... nice little box that could deliver nice sounds :)

Discofreq entry

Schematic

Quite similar to the Boss HM-2
'No more....... loud music.......'

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Re: Aria - AUM-1 "Ultra Metal"

Postby soulsonic » 09 Jul 2008, 08:41

I love this circuit! :D
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Re: Aria - AUM-1 "Ultra Metal"

Postby analogguru » 10 Jul 2008, 08:53

Sadly the schematic contains at least two mistakes:
1.) A missing 470k from the base of the input buffer to Vref.
2.) The 100k resistor at the last transistor of the EQ-section should connect to the base (instead of the collector) and the collector should connect to V+

And missing is the information if the trannies are -O, -Y, -GR or -BL types.

The diode at the base of the power-supply transistor is a zener diode with 9,1 V.

Anyway, thanks for the trace,
analogguru
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Re: Aria - AUM-1 "Ultra Metal"

Postby Bernardduur » 10 Jul 2008, 13:25

analogguru wrote:Sadly the schematic contains at least two mistakes:
1.) A missing 470k from the base of the input buffer to Vref.
2.) The 100k resistor at the last transistor of the EQ-section should connect to the base (instead of the collector) and the collector should connect to V+

And missing is the information if the trannies are -O, -Y, -GR or -BL types.

The diode at the base of the power-supply transistor is a zener diode with 9,1 V.

Anyway, thanks for the trace,
analogguru


Thanks man!

I'll check em!

Edit:
You were right :) I replaced the schematic with a new one. Transistors are of the GR type. Zener is 9.1V. Can't say much on the diodes other that they measure 0.646V (silicon diodes I guess; no markings on em) and 0.305V (germanium diodes I guess; again no markings).
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Re: Aria - AUM-1 "Ultra Metal"

Postby seniorLoco » 11 Jul 2008, 02:53

Nice job B ....thanks! :applause:
"Curiosity may have killed the cat, but it saved the mice, who ate the cheese."
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Re: Aria - AUM-1 "Ultra Metal"

Postby mailoszyarr » 10 Sep 2014, 19:51

Hi!
Link to schematic doesn't work. Can you give a new link?
Thanks,
Milosz
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Re: Aria - AUM-1 "Ultra Metal"

Postby Bernardduur » 16 Sep 2014, 13:03

I'll send a copy to your mailadress and will post it again here!
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Re: Aria - AUM-1 "Ultra Metal"

Postby 287m » 25 Jan 2015, 17:51

hi Mr B

where the scheme? please, count me in :D
i want build this :D

Thanks very billion much. hehe
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Re: Aria - AUM-1 "Ultra Metal"

Postby Franzki » 21 May 2015, 23:00

Would love to have the schematic as wel... bought an Aria ProII Ultra Metal pedal but want to figure out how the overdrive section works... I counted at least 6 diodes in the signal path...
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Re: Aria - AUM-1 "Ultra Metal"

Postby modman » 21 May 2015, 23:29

Sent a pm;
Could you please reup the schematic, attach or if you like to have a partition of the fsb server for ftp upload, lemme know. I think I already proposed this before..."
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Re: Aria - AUM-1 "Ultra Metal"  [schematic]

Postby Bernardduur » 25 May 2015, 12:23

Aria - AUM-1.jpg
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Re: Aria - AUM-1 "Ultra Metal"

Postby EddieTavares » 25 May 2015, 13:53

This is a Boss HM-2 with minor diference, OK?

Image

I have one but I duno where it is. Its noisy and harshy, I tried to mod but after that it sounds more like a DS-1 nothing about the "metal".
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Re: Aria - AUM-1 Ultra Metal

Postby Franzki » 29 May 2015, 01:50

I recently bought the Aria... It may not be a real `metal` distortion but I like the way the sound cleans up when I keep the volume low on my guitar. Unfortunately the distortion taper is not working well anymore in the lower regions... but running this pedal in a low gain mode would probably make it great for blues and rock overdrive.
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Re: Aria - AUM-1 Ultra Metal

Postby soulsonic » 29 May 2015, 02:17

Franzki wrote:I recently bought the Aria... It may not be a real `metal` distortion but I like the way the sound cleans up when I keep the volume low on my guitar. Unfortunately the distortion taper is not working well anymore in the lower regions... but running this pedal in a low gain mode would probably make it great for blues and rock overdrive.

I can't speak for the Aria, but the HM-2 has a really bad taper toward the bottom of the Gain control. From about 8 o'clock to 9:30-10:00, it jumps from almost low gain to almost maximum distortion and doesn't get very much more distorted the higher you turn it past that.
It does clean up very well, too, and I think the fuzzy edge of it gives it a unique tone for more of a fuzz than distortion sort of sound.
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Re: Aria - AUM-1 Ultra Metal

Postby Manfred » 25 Jul 2016, 01:17

I have got a Ken Multi MUM-7 for repair, it is identical in construction with the Aria AUM-1.
I found out the types of clipping diodes as follows.
The Silizium diodes are all 1N914 and both Germanium diodes are 1N34A.
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