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EV ZLX Series Input Board

Locating a replacement input PCB board for the EV ZLX series speakers can be difficult. Here’s where I found the part I needed.

The back panel of an EV ZLX-12P

Both of the XLR combo inputs on the back of my EV ZLX-12P powered speaker were blown. The previous owner had connected an amplified signal into the line level input. In layman’s terms, that’s bad.

Everything on the PCB looked fine, but somewhere in the input board circuit something was fried. The 1/8″ stereo aux input still worked, which told me the amplifier board was still working correctly. So I simply needed to replace the input board.

Easy, right? Nope.

Trying to find just the input board and not the entire back of the amplifier was very tough. Most of the places I was finding online were in the UK. The price of superfluous parts plus international shipping was nearly the same price as buying a new speaker. It was hardly worth fixing.

That is, until I found a Canadian supplier that sells the input board separately. I found it buried in a Bosch parts list. In case you need the same part I did, here’s the contact information you need…

Taylor Electronic Services Inc.
2075 – 16th Ave. E.
Owen Sound, ON, N4K 5N3
Tel: (519) 371-7710
Toll Free: (888) 371-0779
Fax: (519) 371-0813

Ask them for this part…

Description: ZLX Input PCB Assy.
OEM Part #: F.01U.294.654
TES Part #: 12854
Price: $98.00 CDN / $76.00 USD
(price as of Oct. 2018)

This little thing is surprisingly hard to find.

This input board will fit both the ZLX-12P and ZLX-15P powered speakers. I’m not sure if it works with the ZLX-12BT and ZLX15BT models or not, but I would assume that there’s either a different input board or additional Bluetooth board for those models. This board is definitely not needed in the ZLX-12 and ZLX15 passive speaker models.



  1. 1 Mitch 10:05 am Apr 4, 2019

    Thank You soo much!! This has saved me from buying a new AMP module for my EV 15P Speaker

  2. 2 Richard Lampese 2:36 pm Jun 25, 2019

    I had no luck trying to communicate with Taylor but I was able to order this part from Atlanta Audiolab. $76 plus tax and shipping.

  3. 3 Mike Skory 12:07 pm Jul 23, 2019

    I’ve had 2 in the store recently for jammed XLR input jcks. Do you know where to buy just the jacks? 7 pin

  4. 4 Scott Troyer 12:23 pm Jul 23, 2019

    Not sure. I think they are Neutrik jacks. Try checking Digi-Key, Mouser, etc.

  5. 5 Chris Greco 2:52 pm Oct 14, 2019

    Hey Scott! Do you think just this input board would fix the issue of having no low frequency? Since it contains the DSP. The woofer is fine and I figure there isn’t anything wrong with the amp it self in the full module. Thank you!

  6. 6 Cas 2:31 pm Nov 9, 2019

    I think this is what I need. No power going to amp, input button is slightly blackened, seem to have blown fuse in input board or something. How easy (or otherwise) are these replace? I’m not an electrician :/

  7. 7 Scott Troyer 2:42 pm Nov 9, 2019

    Cas, it isn’t a very difficult task. Make sure the speaker is not plugged in before you start. There are just a few screws and a few cables to disconnect and reconnect.

  8. 8 Guy Walker 6:13 am Jul 12, 2021

    I’m looking for the input pcb and the DSP screen. Any thoughts of that possible find>

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