Coda 8M User manual

SPECIFICATIONS
WARRANTY REGISTRATION
WARRANTY
OPERATION MANUAL
Monoblock Amplifier 8M
2
4
6
5
3
INTRODUCTION
DESCRIPTION
DETAILED INSTALLATION
7
CARE & HANDLING
1
SAFETY PRECAUTIONS
8
8M

!
CAUTION
CAUTION
WARNING
WARNING
1
SAFETY PRECAUTIONS
CAUTION -
-
-
-
-
CAUTION: TO PREVENT ELECTRIC
SHOCK, DO NOT REMOVE COVER.
NO USER SERVICEABLE PARTS
INSIDE, REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
THIS SYMBOL IS TO ALERT YOU OF
THE PRESENCE OF UNINSULATED
DANGEROUS VOLTAGE WITHIN THE
UNIT'S ENCLOSURE THAT MAY BE OF
SUFFICIENT MAGNITUDE TO
CONSTITUTE A RISK OF ELECTRIC
SHOCK.
THIS SYMBOL IS INTENDED TO ALERT
YOU OF THE PRESENCE OF
IMPORTANT OPERATING AND
MAINTENANCE INSTRUCTIONS IN THE
LITERATURE ACCOMPANYING THE
UNIT.
WARNING:TO PREVENT FIRE OR SHOCK HAZARD, DO
NOT EXPOSE THIS UNIT TO RAIN OR
MOISTURE. TO AVOID ELECTRICAL SHOCK, DO
NOT OPEN THE UNIT. REFER SERVICING TO
QUALIFIED PERSONNEL.
Never install or remove the power cord from the chassis
unless it has been disconnected from the AC power source
first.
Never pull on the power cord when removing it from an AC
power source. Grasp it by the plug.
Do not leave the power cord connected to an AC power
source unless it is connected to the unit.
It is recommend that during extended periods of non-use
that the units power cord be unplugged from its AC power
source.
Route the AC power cord so that it will not be damaged or
walked on.
!

2
INTRODUCTION
This amplifier is a precision device, designed in an effort to provide the listener with
unmatched sound quality, design, and construction. In order to operate your amplifier properly
and to realize all of the capabilities of the CONTINUUM 8M, we recommend that you read
this entire manual carefully.

3
DESCRIPTION
The Coda Continuum 8m amplifier is designed with the same level of thoroughness usually
reserved for the finest amplifier gain stages. Balanced interconnections are provided to take
advantage of their greater noise rejection they provide. Differential voltage gain throughout
provides exceptional rejection of external noise and contributes to the inherent DC stability of
the circuit. This allows direct coupling at the Balanced Inputs without servo circuitry. The unit
also uses output followers operating without feedback.
The front end is designed to provide a slew rate of 50 V/us without entering Class B operation
as is common in many other designs. This combined with excellent high frequency design
insures linear operation at high speed. The supplies take a very direct approach to high
performance. A top quality 2000VA toroidal transformer with independent rectifiers and about
80,000 uf of total capacitance with very low ESR and inductance are used.
The current stage is capable of producing currents in excess of 100 peak Amperes with a
degree of linearity and speed which is not matched by other designs when producing only a
fraction of this current. This is achieved by the implementation of several distinct circuit
features.
Each channel uses 20 individual output transistors with a combined power capability of 3600
Watts and 75 Amps with a bandwidth of 10 Mhz.
The bias section is designed to produce a precision transition with no abrupt changes in
distortion or output impedance. This “Precision Bias”technique yields seamless performance
regardless of the complexity of the load impedance. With such linearity and bandwidth, no
overall feedback correction is used. One advantage of this is a high degree of immunity from
interactions with complex speaker loads or cables.

4
DETAILED INSTALLATION
I. Rear Panel
II. Front Panel
Note the correct left or right channel orientation. The function and channel markings on the
rear panel correspond to the front panel controls and their signal paths.
1. The unbalanced or balanced inputs should be attached to the appropriate unbalanced OR
balanced outputs of a preamplifier, either directly or through a crossover or processor as
appropriate to the application. Only one input, balanced or unbalanced, should be used at a
time.
2. The negative and positive outputs should be attached to corresponding speaker terminals.
NOTE: There are no output fuses so as to ensure a low output impedance. Speaker
protection is left to the speaker manufacturer as they would best know how to protect their
speaker.
3. The main power switch, once all appropriate connections are made, may be left on as the
amplifier draws a negligible amount of current when the bias is disabled.
4. The fuse and voltage selector houses a 5x20 slow-blow fuse and voltage selector
cartridge. Should the fuse blow, contact a Coda dealer or call Coda directly. When changing
the fuse or altering the voltage selection be sure the unit is disconnected from its AC power
source.
5. The AC line input should be attached to AC power with the cable included with the
amplifier.
1. The bias button enables and disables the amplifier bias voltage. When the bias is disabled
the amplifier is muted and will draw no power, but the power supply will remain energized and
ready to operate.
2. The LED in the center of the front panel indicates the bias state.
3. The two LEDs either side of the center LED indicate the amplifiers DC power supplies are
working correctly. If either light should go out, disconnect the amplifier and contact your Coda
dealer or Coda directly.

5
CARE & HANDLING
The interior of the unit requires no special care. If it becomes necessary to clean the exterior,
a simple dusting may be all that is required. If a cleaner is necessary, any dilute commercial
ammonia based product will be appropriate. NEVER use any abrasive rags, cleaners or
chemical solvents on Coda products.
When handling the unit, take care not to mar the aluminum. Aluminum is a medium hardness
metal and can be scratched by the harder tool steels.
Avoid exposing the unit to direct sunlight, and keep it away from sources of intense heat.
Do not throw away the carton or associated packing material. They are ideal if you need to
pack the unit for moving and in the unlikely event that servicing is needed, they will be
necessary for safe shipment.
Be sure to provide adequate insurance when shipping.

6
SPECIFICATIONS
RATED POWER
BANDWIDTH
DISTORTION
GAIN
CURRENT CAPABILITY
SLEW RATE
INPUT IMPEDANCE
OUTPUT IMPEDANCE
NOISE
POWER SUPPLY
DIMENSIONS
WEIGHT
V2:
800 Watts into 8 Ohms
1600 Watts into 4 Ohms
Class A ~5 Watts
V1:
500 Watts into 8 Ohms
1000 Watts into 4 Ohms
Class A ~10 Watts
DC or -3dB at 5Hz through 100kHz depending on input
Less than .03% from 10Hz to 20kHz at 500 Watts (V1) into 4 through 8 Ohms
26dB
150 Amperes peak
50 Volts/microsecond
50k Ohms unbalanced/10k Ohms balanced
.04 Ohms from 20Hz to 20kHz
More than -110dB referenced to rated output
3.0kVA toroidal transformer with independent rectifiers and 80,000 uF of capacitance
Faceplate: 17 inches wide by 5.5 inches tall
Chassis: 16.75 inches wide by 6 inches tall by 14 inches deep
62 lbs

7
WARRANTY
I. Warranty - Any failure of the Coda product, hereafter known as the product or original
product, to operate or to meet specifications, applicable at time of manufacture, due to a
manufacturing defect or component failure, will be corrected by Coda Technologies without
charge for parts or labor, for a period of ten years from date of original purchase. Coda
Technologies will provide for surface transportation to and from the factory for a period of one
year from date of original purchase.
II. Procedure - If the product should require service under warranty contact Coda
Technologies at the location on the back cover of this manual for shipping instructions.
Products purchased outside of the United States will be covered by the warranty conditions
extended by the importing distributor which may differ from those given above.
III. Exclusion of Coverage - Coda Technologies is not obligated to service the product in
certain conditions, as according to the following subsections.
a. The product has been damaged through:
i. operation not in accordance with the instructions in this manual
ii. abuse, tampering, modification or accident
iii. serial number defacement
b. The product has been transferred to a third party. This warranty is valid only for
the original purchaser of the product.
c. The product has been transported outside of the United States of America.
In these conditions any service will be made at Coda Technologies sole option.
IV. Total Loss and Replacement - If the product is submitted for service due to a severe
malfunction which has caused damage sufficient enough to make a repair attempt infeasible,
the product will be replaced with another unit of equal or superior specifications. Coda
Technologies product line is frequently updated and changed, and the specific model and
version of the original product may be discontinued at any time without notice. In this case no
guarantees are made that the replacement unit will be visually similar to the original product.
V. Subjective Differences - No guarantee is made that the product will perform to any
specifications that cannot be measured and confirmed with precision audio analysis
equipment. Coda Technologies is only obligated to make repairs which will bring the product
into compliance with the specifications stated in this manual.
VI. Unnecessary Service - In all conditions, if the product is submitted for service and found
to be operated without fault and within specifications, shipping charges will be billed to the
customer.
This warranty gives you specific legal rights. You may have other rights which vary from state
to state.
Disclaimer - Coda Technologies cannot be held responsible for any damage caused by their
products, including but not limited to:
a. Damage to speakers caused by failure of a Coda Technologies product to mute
or disable itself as expected or described in its manual.
b. Damage caused by connecting a load to a Coda Technologies product having
an improper impedance as described in the products manual.
c. Damage caused by defects in design, construction or component quality.

8
WARRANTY REGISTRATION
Fill in this registration sheet and fax or mail it to Coda Technologies to ensure you are in our
warranty system. This will facilitate warranty service should it become necessary.
It is recommended that you retain a copy of this form for your own records. Coda
Technologies’address and fax number are located on the back of this manual.
MODEL DESIGNATION:
SERIAL NUMBER:
DATE OF PURCHASE:
PLACE OF PURCHASE
OWNER INFORMATION
NOTES:
Name:
Address:
City: State: Zip:
Phone:
Name:
Address:
City: State: Zip:
Phone:

9
WARRANTY REGISTRATION
Fill in this registration sheet and fax or mail it to Coda Technologies to ensure you are in our
warranty system. This will facilitate warranty service should it become necessary.
It is recommended that you retain a copy of this form for your own records. Coda
Technologies’address and fax number are located on the back of this manual.
MODEL DESIGNATION:
SERIAL NUMBER:
DATE OF PURCHASE:
PLACE OF PURCHASE
OWNER INFORMATION
NOTES:
Name:
Address:
City: State: Zip:
Phone:
Name:
Address:
City: State: Zip:
Phone:

7850 CUCAMONGA AVENUE #34
SACRAMENTO, CA 95826 USA
phone
on the web at
email us at
fax
+01 916.383.3653 +01 916.455.3653
CODA.CC
[email protected]