Rodders Posted November 7 Share Posted November 7 I'm looking around for an IEC powered PSU that will take 8-10 pedals and mount under a PT Classic Jr. Ideally under £100. Trying to avoid HB/Thomann as I don't want to have to make up the order to £150 or pay £10 delivery. I've come across Palmer and Fender Engine Room but these are above my budget. Any help and suggestions, greatly appreciated! Quote Link to comment Share on other sites More sharing options...
jrixn1 Posted November 8 Share Posted November 8 More info is needed: what are the individual and total current requirements of your pedals; do you need any/all of the outputs to be isolated; and do you mean you need 8-10 physical outputs, or is daisy-chaining from fewer ok? But I suspect nothing will be cheaper than the Harley Benton PowerPlant ISO-1AC Pro at £59 delivered. Is it very important how much of the total cost is the product and how much is the postage? 1 Quote Link to comment Share on other sites More sharing options...
prowla Posted November 8 Share Posted November 8 The point about looking at the power requirements is indeed something to clarify before choosing the product: is 300mA OK or are there higher-draw pedals, are they all 9V, and so-on. Some power supplies give a mix of 9V/12V outputs and low/hi current capabilities: I've had situations where I'm daisy-chaining 9V pedals and leaving 12V outputs unused. CIOKS do some which have all the angles covered (switchable outputs, even USB), but they aren't cheap; however, every time I look at my second board I end up thinking I wish I had a DC-7 for that too... An option is to look for used rather than new. On the plus side, most supplies will fit under a PT Classic Jr, so size should not be a particular issue. 1 Quote Link to comment Share on other sites More sharing options...
Rodders Posted November 8 Author Share Posted November 8 7 hours ago, jrixn1 said: More info is needed: what are the individual and total current requirements of your pedals; do you need any/all of the outputs to be isolated; and do you mean you need 8-10 physical outputs, or is daisy-chaining from fewer ok? But I suspect nothing will be cheaper than the Harley Benton PowerPlant ISO-1AC Pro at £59 delivered. Is it very important how much of the total cost is the product and how much is the postage? Sorry I should have added more details, as far as I know everything can run on 9V, though my Fishman Platinum Pro EQ and Rodenberg LDP deluxe can also run on upto 18V though not sure of the advantages of doing that? Also apologies for my ignorance I wasn't aware I could daisy chain from a IEC PSU. I use a ISO-1AC Pro already. I would need power for 9 pedals total. Main reason for not wanting to order from Thomann I didn't want to order stuff I don't need. Quote Link to comment Share on other sites More sharing options...
Rodders Posted November 8 Author Share Posted November 8 1 hour ago, prowla said: The point about looking at the power requirements is indeed something to clarify before choosing the product: is 300mA OK or are there higher-draw pedals, are they all 9V, and so-on. Some power supplies give a mix of 9V/12V outputs and low/hi current capabilities: I've had situations where I'm daisy-chaining 9V pedals and leaving 12V outputs unused. CIOKS do some which have all the angles covered (switchable outputs, even USB), but they aren't cheap; however, every time I look at my second board I end up thinking I wish I had a DC-7 for that too... An option is to look for used rather than new. On the plus side, most supplies will fit under a PT Classic Jr, so size should not be a particular issue. I'm not especially technical so I've never really understood or paid much attention to mA, V, wether it is 9 or 12V etc, though I'm always willing to learn! After all I managed to learn frequencies for EQ etc rather than blindly turning knobs 😅 Quote Link to comment Share on other sites More sharing options...
prowla Posted November 8 Share Posted November 8 40 minutes ago, Rodders said: I'm not especially technical so I've never really understood or paid much attention to mA, V, wether it is 9 or 12V etc, though I'm always willing to learn! After all I managed to learn frequencies for EQ etc rather than blindly turning knobs 😅 🙂 My rules of thumb: If the pedal is labelled 9V then don't plug in a 12V supply or it might be damaged. If the pedal is labelled 1A and you plug in a 300mA (ie. 0.3A) power supply then it might not work, or the power supply could trip (if it has protection), or the power supply could be damaged. In summary: a. make sure the voltages match, and b. make sure the PSU can supply at least the required current. Other things to be aware of: Some PSUs have discrete outputs, meaning they can be combined to give higher voltages or currents, but some do not and if you try and combine outputs of those, they will be damaged. Most pedals have the Boss standard power: 9V DC 300mA, centre -ve, but not all do, so be sure to check. (Incidentally, centre -ve was a bizarre choice; most electrical equipment uses centre +ve, so I've no idea why they did what they did.) 1 Quote Link to comment Share on other sites More sharing options...
Rodders Posted November 8 Author Share Posted November 8 In the end despite my resistance I will probably end up going with the HB PowerPlant ISO-10AC Pro. I use AI to help me break stuff down and wade through info but I do check that what it says is correct as much as possible. It suggested the following order for my intended pedals to be connected to the PSU: · Output 1 (9V/250mA): Keeley Bassist Compressor (50mA) · Output 2 (9V/250mA): MXR Smart Gate (15mA) · Output 3 (9V/250mA): JHS Haunting Mids (10mA) · Output 4 (9V/250mA): TC Nether Octaver (10mA) · Output 5 (9V/500mA): Fishman Platinum Pro EQ (200mA) · Output 6 (9V/500mA): TC Afterglow Chorus (>100mA) · Output 7 (18V/220mA): Rodenberg LDP Deluxe (100mA) · Output 8 (9V/450mA): TC Echobrain (>100mA) · Output 9 (9V/450mA): TC Skysurfer Mini (100mA) · Output 10 (9V/450mA): TC Crescendo (100mA) Does this sound right @prowla @jrixn1? Quote Link to comment Share on other sites More sharing options...
prowla Posted November 8 Share Posted November 8 The list looks right. It then says "the total output power must not exceed 55.4 W"; by the formula P=IV, I make it 34W: 34.11 1 Quote Link to comment Share on other sites More sharing options...
jrixn1 Posted November 8 Share Posted November 8 (edited) 10 hours ago, Rodders said: I wasn't aware I could daisy chain from a IEC PSU. I use a ISO-1AC Pro already. Yes, you can run a daisy chain from one (or more) of the outputs of your ISO-1AC Pro, as long as each chain doesn't exceed the output's max current (in this case, 500mA). So before buying the ISO-10AC Pro, it's worth trying something like this https://www.gear4music.com/Guitar-and-Bass/Truetone-5-Channel-Daisy-Chain-for-1-Spot/1V42 There may be some experimentation with which pedals work best together on a chain. Edited November 8 by jrixn1 Quote Link to comment Share on other sites More sharing options...
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