I'll second Paul's advice. When recently expanding my cabinet, I subbed out the power one unit that came with my 900 with the HCBB version. Make sure you know what you're doing before doing this, however. I don't use the 5 volt output yet, but it's nice to know it's there if needed. Now I never have a problem with my 23 modules, including some blacet ones that draw a lot of power.
Steve
On 7/23/07, Paul Schreiber <synth1@speakeasy. net > wrote: I would stick the Power One HCBB in there.
Paul S.
----- Original Message -----
From: "Bryce Churchill" <sunecho@sexkult. org>
To: <motm@yahoogroups. com>
Sent: Monday, July 23, 2007 9:00 PM
Subject: [motm] Triple + Dual vs. bigger Triple power supply
> I've begun building a cabinet that will hold 20-25 MOTM modules
> (including an MOTM-650, which the site description says may draw
> 575mA +/-15v). I believe that one MOTM-950 Dual Power supply won't be
> enough for the +/15v side.
>
> What would be better? Installing an MOTM-900 Dual Power supply
> (outputting +/-15v @ 800mA) ∗and∗ an MOTM-950 Triple Power supply
> (outputting +5v @ 3A, and +/- 15v @ 400mA) or... replacing these with
> one upgraded Power-One Triple Power supply (such as model# HCBB-75W-A
> which outputs +5v @ 6A, +/-15v @ 1.5A)?
>
> Cheers,
>
> Cecil
>
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Stephen Drake
sduck409@comcast. netmakeme1witheverythi ng@gmail. com