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4-way Loudspeaker Protector PCB [01101222]
The PCB for the 4-channel version of the Multi-Channel Speaker Protector.
Double-sided PCB with plated through holes, solder mask and silkscreen overlay.
91 x 66.5mm.
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The Hummingbird Audio Amplifier PCB [01111211]
The PCB for the small Hummingbird audio amplifier.
Double-sided PCB with plated through holes, solder mask and silkscreen overlay.
63.5 x 87.5mm.
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6-way Loudspeaker Protector PCB [01101221]
The PCB for the 6-channel version of the Multi-Channel Speaker Protector.
Double-sided PCB with plated through holes, solder mask and silkscreen overlay.
121.5 x 66.5mm.
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Multi-Channel Speaker Protector PCB patterns (PDF download) [01101221-2]
A PDF with both PCB designs for the Multi-Channel Speaker Protector (both double-sided).
The 6-channel version is coded 01101221 while the 4-channel version is coded 01101222
Both layers of both designs are in a single PDF.
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The Hummingbird Audio Amplifier PCB pattern (PDF download) [01111211]
A PDF with the PCB design for the small Hummingbird audio amplifier (double-sided).
Both layers are in a single PDF.
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Hard-to-get parts for the Hummingbird Amplifier
A small set of parts for the Hummingbird Amplifier which constructors might find difficult to obtain otherwise.
The set includes two driver transistors (MJE15034G & MJE15035G), a VAS transistor (KSC3503DS), a 220pF 250V C0G ceramic capacitor and two 0.22Ω 5W resistors of the type specified in the parts list.
The PCB is available for purchase separately on our website. The remainder of the components can be obtained from a retailer like Jaycar, including the MJL21193 & MJL21194 power transistors.
Keep in mind that Altronics have a complete kit for this module (Cat K5158).
Note: photo shows fully assembled module, including parts not included in this set.
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