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JBL · Amplifier board

Amplifier board for JBL SUB140P / 230

120 W class-D amplifier board of the JBL SUB140P/230, rebuilt to original assembly 051-A05322A-E (EUP / RoHS version).

In stock OEM part no. 051-A05322A-E (AMP) Our ref. RB-SUB140-AMP
Amplifier board for JBL SUB140P / 230

This is the amplifier board of the JBL SUB140P/230 — original designation PCB ASS'Y SUB140/230 AMP, EUP RoHS, assembly number 051-A05322A-E. The original BOM header reads exactly that: AMP JBL SUB140P/230 120W EUP (RoHS).

It receives its rails from the companion power-source board 051-A05322B-E and drives the original driver. Both boards are also available as a matched pair — the usual trade order for repair shops handling several of these subwoofers.

Manufactured on the original double-sided 1.6 mm process sheet, bench-tested before shipping, 24-month warranty identical to the rest of the catalogue.

Verified fitment

  • JBL SUB140P
  • JBL SUB140/230
  • JBL SUB230
  • JBL 140P

Board type

Board typeClass-D amplifier stage
Output stage120 W RMS, per original design
PCB processDouble-sided FR4 1.6 mm, HASL — original process sheet
ConnectorsOriginal harness connectors
ProtectionPer original circuit

Questions that come up before a first order

Will this board fit my unit without modification?

Yes, if your model appears in the fitment list above. The boards are rebuilt from the original production drawings, so footprint, mounting holes and connector set match the original. If your model is not listed, use the model matcher or send us a photo — we answer before you order.

What warranty do I get?

24 months from delivery against manufacturing defect, for both consumer and trade buyers. A board that fails in normal use is replaced rather than debated.

How do I know whether I need the power board, the amplifier board or the control board?

Measure the supply rails first. If the correct DC voltage is present at the amplifier input, the supply is healthy and the fault is downstream. If the unit is completely dead, start with the supply — and remember the control board supervises start-up, so a replaced supply that still will not start points at the control board. If you are unsure, send us a photo and we will tell you before you order.

Do you ship outside the EU?

Yes. We ship worldwide, but EU and UK orders ship from local stock with duties and import VAT settled by us. Orders to other regions may attract local duties payable on delivery.

Can I buy a single board if I'm not a business?

Of course. Trade pricing starts at 10 units, but private customers and individual technicians order single boards every day at the retail price shown.

Repairs on mains-powered equipment carry a serious shock risk

Repairs on mains-powered equipment carry a serious shock risk. Work only with the unit unplugged and the reservoir capacitors discharged, or leave it to a qualified technician.

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