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Punched chassis (1x8 and 1x9)

Aluminium chassis, punched for up to two valves and drop-through power transformer

This chassis is a version of the small plain aluminium chassis, but pre-punched with holes to suit Amp Maker kits and other low-power amp builds. 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

This chassis 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 output transformer.

Control and other holes

The rear panel has holes punched for a combined IEC and fuseholder, an On/Off toggle switch and a speaker socket (Switchcraft-style = 9.5mm). The front panel has seven 9.5mm holes at 30mm centres. This allows for an input jack socket, five control pots and an indicator lamp, for example.
      The top surface is punched with the transformer mounting holes mentioned above, plus a 22mm hole for a 9-pin socket and a larger hole for an 8-pin socket. The top surface also has four M3 mounting holes for fitting the circuit board, and several M4 holes for fixing grounding lugs.

Dimensions & info

The chassis is 254mm wide, 170mm deep, and 50mm tall. The internal dimensions are 210x167x49mm - plenty enough to accommodate typical low-power amp circuits. You can choose to buy the chassis as-is, or with several hardware packs. These cover the M6 mounting hardware and other items for mounting valves, boards and other hardware to the chassis (see here for full details). Made in the UK.

This pre-punched chassis is designed for Champ-style amps - one 9-pin and one 8-pin socket
The back panel is punched for a combined mains socket and fuseholder

The chassis has mounting holes for turret board, or you can use a pair of tag boards for your circuit

Component mounting hardware...
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: £27.00
inc VAT
NOTE: Amp Maker is closed for a whole year, reopening in Autumn 2019. See Home page for details.