LIMITED WARRANTY
BC Audio warrants this product against defects in materials and workmanship for ONE (1) YEAR
from date of original retail purchase (30 days for tubes). BC Audio reserves the right, before having
any obligation under this limited warranty, to inspect the damaged product, and all costs of
shipping the product to BC Audio for inspection shall be borne solely by the purchaser. In order to
recover under this limited warranty, Purchaser must make claim to BC Audio within 30 days of
occurrence, and must present acceptable proof of original ownership (such as original receipt) for
the product. BC Audio, at its option, shall repair or replace the defective unit covered by this
warranty.
This limited warranty does not cover any damage to this product that results from improper
installation, accident, abuse, misuse, neglect, natural disaster, insufficient or excessive electrical
supply, abnormal mechanical or environmental conditions, or any unauthorized disassembly,
repair, or modification. This limited warranty also does not apply to any product on which the
original identification information has been altered, obliterated or removed, has not been handled
or packaged correctly, has been sold as second-hand or has been resold contrary to the US export
regulations.
This limited warranty covers only repair or replacement of defective BC Audio products, as
provided above. In the event of a claim, BC Audio's sole obligation shall be replacement of the
product.
DISCLAIMER OF WARRANTY
EXCEPT FOR THE LIMITED WARRANTY PROVIDED HEREIN, TO THE EXTENT PERMITTED BY LAW, BC
AUDIO DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ALL WARRANTIES OF
MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE. TO THE EXTENT THAT ANY
IMPLIED WARRANTIES MAY NONETHELESS EXIST BY OPERATION OF LAW, ANY SUCH WARRANTIES
ARE LIMITED TO THE DURATION OF THIS WARRANTY. SOME STATES/PROVINCES DO NOT ALLOW
LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS MAY
NOT APPLY TO YOU.
LIMITATION OF LIABILITY
REPAIR OR REPLACEMENT OF THIS PRODUCT, AS PROVIDED HEREIN, IS YOUR EXCLUSIVE REMEDY.
BC AUDIO SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES,
INCLUDING, BUT NOT LIMITED TO, PROPERTY DAMAGE, LOST REVENUES, LOST PROFITS, RENTAL
OF REPLACEMENT EQUIPMENT, DOWNTIME, DAMAGE TO PROPERTY, AND THIRD-PARTY CLAIMS,
ARISING OUT OF ANY THEORY OF RECOVERY, INCLUDING WARRANTY, CONTRACT, STATUTORY OR
TORT. NOTWITHSTANDING THE TERM OF ANY LIMITED WARRANTY OR ANY WARRANTY IMPLIED
BY LAW, OR IN THE EVENT THAT ANY LIMITED WARRANTY FAILS OF ITS ESSENTIAL PURPOSE, IN NO
EVENT WILL BC AUDIO'S ENTIRE LIABILITY EXCEED THE PURCHASE PRICE OF THIS PRODUCT. SOME
STATES/PROVINCES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS
THAT VARY FROM STATE TO STATE AND PROVINCE TO PROVINCE.
©2015 Bruce Clement, BC Audio, San Francisco
Other copyrights and trademarks are the property of their respective owners.
www.bcaudio.com
bc audio
hand-made all-tube non-clone guitar amps
OWNER’S MANUAL
Models JTX45, JTX50, JMX50
The Octal-Plex Series is a family of guitar amps based on 1960’s British plexi circuits adapted for
octal preamp tubes and executed with true point-to-point wiring. Customizable options allow the
gigging guitarist to create his or her ideal amp. Your new amplifier’s construction is heavy-duty,
meant for real-world use and abuse. It is made with the highest quality components and USA iron.
I sincerely hope you enjoy playing your new Octal-Plex Series amplifier as much as I enjoyed
building it.
ESSENTIAL INFORMATION
Tube placement, left to right (facing the rear):
V1
V2
V3
V4*
V5
V6
V7
JTX45
6SL7
6SL7
6SL7
6SL7
KT66
KT66
GZ34
JTX50
6SL7
6SL7
6SL7
6SL7
EL34
EL34
GZ34
JMX50
6SL7
6SL7
6SL7
6SL7
EL34
EL34
*If purchased with optional Effects Loop
Your amplifier is hard-wired for the correct line voltage for your region. The following data is for
120VAC line voltage.
Power: 120VAC, 60Hz, 2A
Mains Fuse: 3A Slow Blow, Type 3AG, 1/4” x 1-1/4”
H.T. Fuse: 500mA, Type 3AG, 1/4” x 1-1/4”
When replacing power tubes, always replace with a matched pair and check and adjust the bias.
For detailed information on setting the bias, have your amp technician contact BC Audio.
