Kits needed to build an LP-PRE?

[galejt]

Kevin.

Greetings. I have a question for you and/or the Community.

I would like to build a complete LP-PRE in a 1U or 2U rack unit.

As I see it I need the following kits:

PSU-PRE
LP-PRE
BFX
ERK
PSA
QS-LV
And a chassis kit.

Am I missing anything to complete this?

Can you tell me whereabouts I can secure the pieces/parts to mount cards in vertical orientation in the Hammond chassis?

Many thanks,
Jim Gale
Roanoke,VA USA

[K O'Connor]

Hi Jim

Always best to go with a larger chassis for more air for the components, and for more space for your hands to work in.

PSA is actually PSW, Panel Switch.

PU-PRE-24 is heavily filtered and BFX and LP-PRE follow Galactic Grounding principles, so QS-LV is not really needed unless it appeals to you for "ultimate quieting".

If you use the 2U chassis, then mounting of the boards is greatly simplified, using a nut or two as spacers on each bolt.

Have fun

[galejt]

Kevin.

Thank you. PSA just slips off the fingers too much these days what with abbreviations all the rage...

2U works for me. I tried a preliminary layout, PSU off to the side and back, LP along the front panel. It looks like I could get away with an 8" chassis depth given the size of the PCBs.

I could see a use for the remaining space to infill a power section later, but a separate power amp has been the plan all along.

I'm gearing up now to point to point wire a Soma84 from TUT5 in an Epiphone Valve Jr. shell. I expect it to be quite a sleeper.

[galejt]

Greetings Kevin, et al.

Hard reset! A recent encounter with a Fuchs ODS has me craving the D-PRE in place of the LP-PRE.

BFX ships with a panel switch for parallel/series.

I would like to foot/panel switch the channels.

My order now looks like this;

PSU-PRE
D-PRE
BFX

ERK, P-SW, F-SW
2 x RLY

Is this everything I need to make this?

Many thanks.
Jim

[K O'Connor]

Hi Jim

Switching D-PRE requires relays not ERK.We sell relays as RLY - wouldn't you know...

Do you need to switch the effect on/off? Use a relay for that. If BFX is in series mode for the effect you use, then "bypasing" requires two relays and a rewire of the series switch. Q-MINI has the control interface required, as well as channel switching control for a 2-ch preamp - maybe a bit of overkill here unless you want to add Q-LATCH to have direct, random access from any channel/FX combination to any other with a single switch transaction.

If you you are content with a channel select button and an FX button, i.e. it suits your playing style, then just the switches and relays suffice.

Have fun

[galejt]

Kevin.

Thank you. I'm still a bit confused by all the switching options, so I'm going to chose simple: a foot switch (FSW) and a panel switch (PSW) for A or B channel switching, wired so FSW overides PSW when plugged in. For the loop: a S/P switch and send/recieve level control.

So for the switching I need to order two RLYs, a PSW and FSW. BFX kit is self contained for my needs. Order up!

Jim

[galejt]

Book 6 is in da house! Both literally and figuratively.

Woo hoo!

Is it my imagination or have the References to chapters in previous Books for further information on a subject increased? If so, yea!