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Punched chassis (5x9)

Medium chassis, punched for five 9-pin valves and drop-through power transformer

This chassis is a version of the medium-sized plain aluminium chassis, but pre-punched with a range of holes to suit Amp Maker kits and many other typical projects up to 20W or so. If you don't have metalwork tools, or the necessary skills and patience (like me), this chassis can cut your amp assembly time right down.

Transformer mounting

It has been punched with a lay-down power transformer mounting hole that accepts either of the drop-through power transformers PT02 190-0-190V and PT03 0-190-275V. There are also mounting holes spaced to suit the OT01 5W single-ended, 15W single-ended and 18W push-pull output transformers.

Control and other holes

The rear panel has holes punched for an IEC-socket, fuse holder and two speaker outputs. The front panel has holes punched for a range of toggle switches, indicator lamp, pots and jacks sockets. The holes in the front and back match the TMB plexi, 18W Lite plexi and CP11 aluminium panels.
      The top surface is punched with the transformer mounting holes mentioned above, plus five 22mm holes for 9-pin ceramic sockets. If your amp circuit doesn't require all five valve sockets, I have snap-fit blanking covers for the unused holes. The top surface also has M3 mounting holes for fitting the circuit board(s), and several M4 holes for fixing grounding lugs, tag strips, etc.

Dimensions & info

The chassis is 483mm wide, 170mm deep, and 65mm tall. The internal dimensions are 440x167x63mm - plenty enough to accommodate typical amp designs. It's suitable for both head and combo amps and mounts like a vintage Marshall chassis. You can choose to buy the chassis as-is, or with several hardware packs which cover the M6 mounting hardware and many other items for mounting valves, boards and other hardware to the chassis. Made in the UK.









Add hardware packs to save time and money on fixing hardware for your amp

Choose extra hardware here...
With 8-item Hardware Pack 1 (+£0.50)
With 63-item Hardware Pack 2 (+£2.00)
With 142-item Hardware Pack 3 (+£4.00)
Price: £29.00
inc VAT
Product is temporarily out of stock.