Jump to content
Why become a member? ×

Volume/boost stomp box...


Potaton
 Share

Recommended Posts

If you look for a linear booster I don't think "The Mole" is what you need. AFAIK it boosts the mids more than other frequencies.

It depends what you mean by "cheap". Really transparent boost pedals usually are not very cheap... Do you have an idea about how much you would like to spend?

The cheapest booster I can think of is [url="http://www.behringer.com/EN/Products/PB100.aspx"]this[/url]. I think it is around £20-£25. It is not true-bypass and I am not sure it is transparent...

Edited by Silent Fly
Link to comment
Share on other sites

I am not sure the MXR micro-amp is true-bypass. If true-bypass is an important requirement, it might be worth double-checking.

Apart from the true-bypass, the m-133 (aka micro-amp) is a good booster. The only thing I don’t like is that it uses a TL061. It was a good IC twenty+ years ago. In these days the market can offer much better components.

Having said that, if super-low distortion and accurate linearity are not important, the m-133 can be a good choice.

Link to comment
Share on other sites

I put together a linear boost pedal for my guitarist colleague, from jack orman's DIY stompbox site, its a good clean boost with no real distortion, offering up to about 20dB, works well for guitar or bass. Pretty simple circuit, doesn't cost much:
[url="http://www.muzique.com/schem/mosfet.htm"]http://www.muzique.com/schem/mosfet.htm[/url]
[i]"NOTE: The frequency response of the AMZ Mosfet Booster is flat and extends down low enough for both bass and guitar use. There is no need to mod the design to add more bass; it will not make any audible change."[/i]
If you want me to put one together for you, drop me a pm and I can cost it out.
Its a good simple effective pedal.
It's true-bypass.
It;s very transparent.
It's very low on battery drain.
Circuit layout here:
[url="http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=1517&g2_serialNumber=3"]http://www.aronnelson.com/gallery/main.php..._serialNumber=3[/url]

Edited by Al Heeley
Link to comment
Share on other sites

[quote name='Al Heeley' post='559303' date='Aug 3 2009, 03:42 PM']I put together a linear boost pedal for my guitarist colleague, from jack orman's DIY stompbox site, its a good clean boost with no real distortion, offering up to about 20dB, works well for guitar or bass. Pretty simple circuit, doesn't cost much:
[url="http://www.muzique.com/schem/mosfet.htm"]http://www.muzique.com/schem/mosfet.htm[/url]
[i]"NOTE: The frequency response of the AMZ Mosfet Booster is flat and extends down low enough for both bass and guitar use. There is no need to mod the design to add more bass; it will not make any audible change."[/i]
If you want me to put one together for you, drop me a pm and I can cost it out.
Its a good simple effective pedal.
It's true-bypass.
It;s very transparent.
It's very low on battery drain.[/quote]

I agree, Jack Orman's Mosfet Booster is an excellent booster.

I used to make a booster based on Jack Orman's circuit as well. It is very close to the circuit used by the Catalinbread booster (I can't remember which one). I don't make them anymore but only because I make another product that covers the same requirements and has better specs.

I would increase C1 to 10nF. It is not really necessary but it improves the linearly at the lower frequencies.

Link to comment
Share on other sites

Thanks for the numerous responses guys :)
Plenty to think about there.......I only need it for 2 songs we do,in particular "Stay Clean" by Motorhead.....I'm battling with two volume-greedy guitarists.
Anyone heard of the Nobels PRE-1?? Are they any good? I might have the chance to pick one up cheap.

Link to comment
Share on other sites

[quote name='ahpook' post='559379' date='Aug 3 2009, 04:31 PM']the LPB has far from a flat frequency response.[...][/quote]

I couldn't agree more. The low-cut at -3dB is 50Hz. It is ok for guitar but I wouldn't recommend it for bass.

Edited by Silent Fly
Link to comment
Share on other sites

[quote name='Potaton' post='559414' date='Aug 3 2009, 05:06 PM']Thanks for the numerous responses guys :)
Plenty to think about there.......I only need it for 2 songs we do,in particular "Stay Clean" by Motorhead.....I'm battling with two volume-greedy guitarists.
Anyone heard of the Nobels PRE-1?? Are they any good? I might have the chance to pick one up cheap.[/quote]

I never tried the Nobels PRE-1.

I would recommend you wait and when you have the money you buy a good quality booster (or you ask Al Heeley to build one for you). In the meantime, you can use the volume of your bass to turn up/down the volume.

Boosters are pedals that should last a lifetime. They do just one thing and they should do it well. IMO, distortion, tone loss and lack of headroom are totally unacceptable in a booster.

Buying a cheap booster (especially if it is not true bypass) it something that I fear you will regret.

Edited by Silent Fly
Link to comment
Share on other sites

[quote name='Silent Fly' post='559373' date='Aug 3 2009, 04:28 PM']I agree, Jack Orman's Mosfet Booster is an excellent booster.
I used to make a booster based on Jack Orman's circuit as well. It is very close to the circuit used by the Catalinbread booster (I can't remember which one). I don't make them anymore but only because I make another product that covers the same requirements and has better specs.[/quote]
Is that your Blue Dragon Booster? Your pedals look gorgeous btw, didn't know you had a range of fx like this. Great stuff!

Link to comment
Share on other sites

[quote name='Al Heeley' post='559541' date='Aug 3 2009, 07:18 PM']Is that your Blue Dragon Booster? Your pedals look gorgeous btw, didn't know you had a range of fx like this. Great stuff![/quote]

Thanks for your kind words Al Heeley.

Yes, it was the Blue Dragon Booster. The [url="http://www.sfxsound.co.uk/mainpage.asp?page=blue_dragon"]new version of the Blue Dragon[/url] has nothing to do with the old version. Apart from the enclosure size it uses a completely different circuit. With the new version, the output can swing between -12V and +12V without clipping.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...