18v pedal powered with a Harley Benton Junior?

markblack

Is it possible to use two 9v outputs with the y cable to power an 18v pedal? Or am I being dumb.

Cheers.

hobbio

I thought that was why they supplied it?

steamabacus

Yes but you'll have to buy a y-cable or make your own. The yellow y-cable they supply is a 'parallel' cable for current doubling (still 9v). You will need a 'series' cable for voltage doubling (18v but the same current as a single output).

I can confirm that this will work ok as I do exactly this with my Award-Session JD10 and my HB PPJnr.

markblack

@steamabacus  many thanks. M

not_the_dj

What about a Diago 18v adapter?

(I think I've still got one somewhere, I certainly used to have one and I don't recall selling it)

http://www.diago.co.uk/adaptors/18v.html

hobbio

Yeah, thanks for putting me straight mate. The supplied y cable is for 9v pedals that require more than the 120mA per output it supplies then?

steamabacus

not_the_dj said:

What about a Diago 18v adapter?

(I think I've still got one somewhere, I certainly used to have one and I don't recall selling it)

http://www.diago.co.uk/adaptors/18v.html

If I remember my physics correctly, I suspect that adapter will also result in a current drop, maybe even halving the current? The HB PP Jnr only has 120mA per output so that may possibly be a problem.

not_the_dj

steamabacus said:

not_the_dj said:

What about a Diago 18v adapter?

(I think I've still got one somewhere, I certainly used to have one and I don't recall selling it)

http://www.diago.co.uk/adaptors/18v.html

If I remember my physics correctly, I suspect that adapter will also result in a current drop, maybe even halving the current? The HB PP Jnr only has 120mA per output so that may possibly be a problem.

Specs list it as being able to supply 30mA, so ideal for drive pedals but not much else.

I used to use it with a Catalinbread DLS Mk3 because PGS Andy told me it would sound better ;-)

crunchman

The Diago one is fine for drive pedals.  Will leave you an extra output spare as well.  I think I've got one or two of them lying around somewhere.

EdGrip

The one they supply is a current-doubler, to let you use a 9v pedal (or daisychain) up to 240mA current.

You can buy a voltage-doubling Y-cable, which is different, to let you use an 18v pedal (or daisychain) up to 120mA current. Various companies make these; I think mine is T-Rex. I bought it from Thomann at the same time as the Powerstation Junior. They're about £6, but you just have to take the hit (or make your own). 

crunchman

For clarity the Diago that I (and @steamabacus) have been talking about is not a Y cable.  It has some kind of charge pump arrangement that doubles the voltage so you can do 18V off a single output.

Dave_Mc

steamabacus said:

Yes but you'll have to buy a y-cable or make your own. The yellow y-cable they supply is a 'parallel' cable for current doubling (still 9v). You will need a 'series' cable for voltage doubling (18v but the same current as a single output).

Yeah. I recently got an 18V pedal, and luckily I thought, "I'd better check the manual, just in case." As you said, according to the manual it's a current doubler, not a voltage doubler.

I never got round to buying a voltage doubler cabler. )