DNA DNA-800 Manuale utente

David Nordschow Amplification

User Manual

For The

DNA- 800 Bass Amplifier

DNA-800

Foreword

Thank you for purchasing a David Nordschow Amplification bass guitar amplifier. We appreciate your

faith in our ability to help to provide you with an outstanding Bass Guitar Amplifier, and have worked

hard to give you the very best products available today. We design and build our amplifiers and

electronics to give you outstanding performance and years of trouble-free service. However, should

you ever need service or replacement parts for your equipment, we will do everything we can to

assist you. To help us provide service equal to our designs, please take the time to review this

manual in its entirety and to register online www.dnaamps.com.

If you prefer, you may instead send in the warranty registration card included in this manual.

As the market leader in High Performance Bass Amplification,we are proud of our notable lineage

and the many industry breakthroughs made by our founder David Nordschow throughout his

distinguished career. We design and engineer DNA products to work in concert with each other to

achieve a true synergy in their performance. Our DNA series amplification systems feature, leading

edge design, outstanding performance quality and superior components, to ensure that our clients

receive the ultimate in tone, quality and long-term reliability, even under the most rigorous touring

conditions.

Please read this manual before operating your new equipment. Help us help you by taking a few

minutes to learn how to properly set up and use your new 800 Bass Guitar Amplifier. You’ll be glad

you did!

CAUTION!

This product, when used in combination with amplification and/or additional

loudspeakers may be capable in certain situations of producing sound levels

that could cause possible hearing damage or loss. DO NOT ever operate your

products at high volume levels that are uncomfortable or dangerous to yourself

or others. Follow good sound safety practices and use approved hearing

protection if needed. If you experience discomfort or ringing in the ears and/or

you suspect hearing loss, you should consult an audiologist immediately.

Please take the time to review this manual and to register your

product with us online @ www.dnaamps.com

BASIC OPERATING INSTRUCTIONS

Your DNA 800 Amplifier has a smart switching supply that will automatically adjust to the local

operating voltage from 90 VAC to 250VAC and frequencies from 50-60 Hz. You will need to have the

correct type and style of AC power input cable connection for the country you are playing in.

Connect your DNA Series bass guitar amplifier and appropriate speaker of a similar power rating,

using the NL-4 connectors on the rear of the amplifier chassis. The NL-4 connectors on both your

amplifier and your DNA speaker cabinet are wired together in parallel (see below) Connect your

amplifier using one connector and use the other one to connect another speaker cabinet if desired.

Make certain that the total impedance of all speaker cabinets you are using is no lower than the

minimum rated impedance (4 Ω) of your amplifier. Always make all speaker connections before

turning your amplifier on.

Connection Notes!

NEVER connect two different amplifiers together, or two channels of the same amplifier, into one

cabinet. This will be very likely to seriously damage your amplifier and possibly the speaker cabinet

as well.

IMPROTANT NOTE: DO NOT use a light gauge shielded instrument type cable to connect your

amplifier and speaker together. This will cause very poor performance and may even cause the

amplifier to oscillate and distort. Always use a good quality, heavy gauge speaker cable 16 gauge

min. or preferably 12 - 14 gauge cables for the best results.

Output connections:We use NL-4 type connectors. NL-2 type and NL-4 type cables are both

acceptable. Note that the +1/+2 pins are connected together as are -1/-2 on both the NL4 connectors

in your cabinet. This is to allow you to get the lowest impedance possible in your cable connection for

best bass response and peak power delivery. We also provide a ¼” connector for temporary short

term emergency use only. The ¼”onnector should not be used in place of the NL4 connections for

normal operation. The ¼” jack cable has a much lower current rating and will not perform as reliably

as the NL4 type connector.

Output power ratings: The 800 can put out a full 800 watts RMS into 4 Ω load @10%

distortion. It will put out near full power into a 2 Ωload. Even though it will operate into that low an

impedance load, we do not recommend a 2 Ωload for standard configuration. The 800 is designed to

work most efficiently and effectively into a 4 Ωto 8 Ωload configuration.

Front Panel Controls and Features

Note: Level Controls go from what the incoming signal level is, down to off. Gain Controls can

amplify the incoming signal level to a much higher level.

Control Group

Main Signal Input Jack

The Main signal input is located on the left side of the front panel. It is a standard ¼”jack configured

for monaural operation. The input impedance is 500K Ohms. Please note: The rear input jack

connection switches through the front input jack. They can each be used separately but not together

at the same time.

Mute To Tune

The Mute to Tune switch is green in the normal on or (out) position. When pressed in (Mute is

engaged) the switch will change color to red indicating the mute is engaged, and the audio signal is

no longer going to the output amplifier. The Tuning Jack on the rear panel retains signal. The DI will

not have signal present at its output when the Mute is engaged.

Gain Control

The Gain Control is used to match the amplifier to your bass and playing technique. Turn the Gain

Control up to the point at which the green set level LED comes on and flashes on the stronger notes.

That will set your signal level to be in the sweet spot in the gain chain. That will get you the best

sound and lowest noise combination.

Shape Control

The Shape Control is a complex curve that boosts low end, scoops out the low midrange and has a

genteel rise toward the treble frequencies. It is very handy for enhancing the tone curve for popping

or slapping. It also works well in the studio for giving you a quick way to change or shift to a different

tone emphasis. Be careful not to over use it in live playing conditions as the mid scoop can make it

difficult to cut through if you use too much of the effect.

Shape Bypass

The shape bypass is available only by foot switch control. It allows you to set up the Shape Control

for a specific tone character and then to bypass it. You can turn it on and off with the footswitch when

you need that special tone without having to adjust the amplifiers controls each time. FT/SW (A) Jack.

Switch (2).

4 Band Equalizer Set

The Four Band Tone Equalizer Set in the 1350 is highly musical and very simple to use. The

frequency centers are in the right places. The controls are fast and effective. All four controls interact

smoothly, seamlessly, and musically.

Bass Control

The Bass Control is set to increase or decrease the low bass frequencies. When the control is set to

center, it is inactive. When turned to the left, it goes negative, and to the right it goes positive. It

interacts smoothly with Low Midrange Control. This control is centered around 35 Hz. This control is

helpful for providing a deeper and more solid bass tone when needed.

Low Midrange Control

The Low Midrange Control is inactive at the center position. It controls the bass frequencies from just

above the low bass control range to the high midrange control. This control is centered around 500

Hz. This control range is useful, adding a little extra push or for scooping out the midrange area to

get that perfect tone balance while playing jazz and other similar music types.

High Midrange Control

The High Midrange Control is inactive at the center position. It is set to interact smoothly with the

Low Midrange Control and covers the upper midrange frequencies. It is centered at about 2K Hz.

This range is useful for adding some cut to your sound for playing pop and rock.

Treble Control

Treble Control goes from above the high midrange control out to the top of the normal audio range.

It's used to enhance brightness and sharpness in the overall tone settings.

Equalizer Bypass Switch

This is available only on the footswitch. FT/SW (A) Jack. Switch (1). This allows you to set up a

special tone setting on the 4 band tone controls and then bring it in and out as needed by bypassing

the tone setting back to straight wire flat.

Auxiliary Input Level Control

This controls the mix level of the Auxiliary inputs and is located on the back panel. It has 6dB of gain

so you can properly mix your MP3 audio files, tunes, tracks or drum machine with your bass at

normal live playing levels.

Master Level Control

The Master Level Control is a level control, not a gain control. It is the final control before the

amplifier input. Use this control to set your overall sound level for the room when you are playing.

Power On LED

The power on (green) LED turns on when unit is powered up and stays on as long as unit is in normal

operating condition. If the green power on LED is not on after you power on the main switch. The

unit has a problem and is not in proper operating condition. If the green power on indicator will not

illuminate, the unit has an operational problem and needs to be checked out by your dealer or

authorized DNA service center.

Peak Level LED

The amber colored Peak Level LED flashes briefly when your unit’soutput amplifier exceeds 0.01%

total harmonic distortion. This function is basically a peak output indicator, though it comes on at well

below the actual peak output of the amplifier.

Input Pad

Located on the Gain control pot. Use this control switch to reduce the signal level of your bass if it is

coming into your unit at too high a level to match up correctly with the input gain control.

DI Level Send

Located on the back panel. DI Level Send allows you to control the level of the DI signal going to the

mixing or recording console. This control allows you to adjust from microphone level to low line level.

DI Pre/Post Switch

Located on the Shape control pot. The Pre/Post DI switch allows you to select either pre-tone or post

tone single configuration to send to the DI output. This feature is only available from the front panel.

Compressor Threshold Control

The Threshold Control sets the level at which the compressor begins to compress. This is also called

the knee of the compressor. Turning the control to the right will allow the compressor to engage

sooner. Turning the control more to the left it will let the compressor engage at a higher signal level

or not at all.

Compressor Ratio Control

The Compressor Ratio Control allows you to select the way the signal is compressed. When the

control is set to the left side near zero, it will compress very gently, at a low compression ratio. As the

control is turned to the right, the ratio will become higher until it becomes a hard limiter at the control’s

far right position.

Compressor Bypass Switch

Located on the Threshold control pot. The Compressor Bypass Switch allows you to preset the

compressor to the desired level or effect in playing situations, and then to bypass the compressor,

when you no longer want to use the compression effect. Note: The comp. Led will not blink while

playing when it is in the bypass mode.

AC Input

The AC Input cable is connected to a standard IEC type input. The power supply will automatically

adjust from 90 VAC to 250 VAC, and works with 50 or 60 Hz.

Mains Power Switch

The Mains Power Switch is located above the AC inlet. It is an illuminated red type switch.

Fuses

There are no user serviceable fuses inside the unit. Your 1350 amplifier contains a 10A fuse which is

part of the power supply module. It is not user serviceable. In the event of a clear fuse failure or a

total lack of amplifier power up of the please contact your dealer or service center for assistance.

Fan

The DNA 800 has passive cooling and no fan is required

Amplifier Output Jacks

The Amplifier Output Jacks available on 1350 are configured as two NL4 type jacks (main), and one

1/4 inch phone jack for (emergency use).

Use the NL4 jacks for normal operation. The main speaker jacks are wired +1 and +2 together and -

1 and -2 together. The unit will accept both the NL2 or NL4 type cable connections. The

configuration is designed to give you the best connection possible your speaker cabinet. This will

give you the best quality sound, power output, and the deliver maximum available current to the

loudspeakers.

DI Output XLR Jack

The DI Output Jack is a balance line XLR type configured with pin (2) hot or plus. The signal is very

low noise and is studio quality. The output is protected to handle phantom power voltages if they are

accidently applied to the DI output. It is recommended that you turn off phantom voltage to this jack

before using the unit. The specialized THAT chip that drives this output is configured as an electronic

transformer and is fully balanced.

Ground lift

The ground the switch is located next to the DI output XLR. It allows you to reconfigure the ground

reference for pin one of the XLR. In the normal condition pin one of the output jack is connected

directly to the main chassis ground. When the ground is lifted by engaging the ground lift switch the

ground connection is removed from the pin(1) of the XLR. This is useful for eliminating or reducing

ground loops and unwanted hum and noise in the systems.

Auxiliary Input jacks

The AUX IN as an RCA input Jack set that features actively summed left and right inputs. It has six

dB of voltage gain. It provides a high-quality input that can take an IPad, auxiliary device or drum

machine and amplify it to the proper level to mix with the live bass guitar signal.

Foot switch control jack A

Switch connection Jack (A). Switch one and two control the tone equalizer bypass and the shape

bypass functions. These features are only available on the foot switch.

EQ. Bypass FT/SW (A) Switch (1). Shape Bypass FT/SW (A). Switch (2).

Slave Input Connection

This input jack allows you to connect your unit’s amplifier as a powered slave to another preamplifier.

This connection bypasses the main input jack, preamp and all controls on your unit.

Effects Loop

The main effects are a standard serial effects loop. The return jack set breaks the signal chain and

results in 100% of the signal going through the effects loop before coming back to the rest of the

signal chain. The send can also be used as an extra signal output if the return jack is not used.

Tuner Output

This Jack provides a slightly amplified and buffered signal that can be connected to the tuner input of

your choice.

Rack Access Rear Input Jack

This Jack provides an alternative input access for plugging in things like wireless receivers or any

input that needs to be connected from inside the rack or to the back of the unit. When you operate the

rear panel input jack you cannot operate the front panel input jack.

Operations

Turning on your amplifier

Before turning on your amplifier please make sure you read the manual and understand it. Make the

connections your loudspeaker before powering on the amplifier. Switch on amplifier by pressing the

mains power switch. All the amplifier management lights on the front panel will come on momentarily.

Then the red and yellow lights will turn off leaving only the green light glowing steadily. This is the

normal condition and indicates your amplifier is in good condition and ready to operate.

Turning off the amplifier

Press the mains power switch to turn off the unit. It is located on the back panel. All the lights on the

amplifier management group will light up momentarily but after few seconds they will all go off.

What to expect if your amplifier goes into the protect mode

Your 800 amplifier has a very sophisticated monitoring system for the power supply and amplifier. If

the system detects a short circuit or a dangerous condition such as, over temperature, excessive

amounts of clipping, excessive current usage, or improper power configuration conditions the

amplifier may go into the protect mode for safety.

If the amplifier goes into the protection mode it will be necessary to shutdown and then restart the

amplifier to clear the safety function lockout and restore the unit to normal operating conditions. A

damaged speaker cable, intermittent AC connections, excessively high temperatures and unusually

high current demands that exceed the systems normal parameters can potentially cause the system

to go into protect mode.

Output Peak Indicator

The output limit indicator is the yellow LED. It will flash briefly anytime the amplifier output nears

clipping. This normally occurs as the amplifier nears full power.

This light flashing is an indication that you are at the full power limits of the amplifier. It is okay for the

light to be flashing periodically, but it should not be on continuously.

3 Year Warranty Terms

DNA LIMITED WARRANTY

DNA LLC warrants the product you have purchased to be free of defects in materials and

workmanship in normal use for a period of (3) years from the date of original purchase. This warranty

shall be to the original purchaser when purchased from an Authorized DNA Dealer. The manufacturer

warrants the speakers for period of (3) years. Defective parts found during the warranty period will be

replaced or repaired without charge with a proof of purchase if the complete product is returned to

DNA LLC or any Authorized DNA Service Center within the U.S.A.

DNA LLC reserves the right to use materials readily available at the time of the repair. All Warranty

service requires a Proof of Purchase (sales receipt) to be presented at time of service request. Any

repair or service performed by any person or entity other than the DNA factory, or an Authorized DNA

Service Center is not covered by this limited warranty. The customer is responsible to pay

transportation to and from The DNA LLC Authorized Service Center, if the required service cannot be

performed at the Authorized DNA Service Center the unit must be returned to the DNA factory for that

service.

What is covered against manufacturing defects

Parts and Labor to correct any defect in original materials and or workmanship.

WHAT IS NOT COVERED

Products whose serial numbers have been altered or removed or have had their RFID chips

removed. Normal wear and tear from use is not covered. Damage to the units finish due to misuse.

Operations that are outside of the specified ratings, neglect or accident.

Shipping Damage is not covered under the warranty. Report damage upon receipt of item to the

carrier (i.e. UPS). The freight carrier must be notified upon receipt of items to insure a freight damage

claim resolution. Shipping damage not filed with carriers within (48) hrs upon receipt will not be

covered under warranty. Report any shipping damage within (48) hrs of receipt to your DNA Dealer.

Keep all original documents and packing materials to insure freight damage claim resolution. Any

merchandise that has been altered, or modified from its original OEM condition. DNA LLC is not

responsible for any items left in protective covers or cases, (We strongly advise that all personal

items such as chords, cables, tuners, etc. be removed!) freight charges to and from the factory or an

Authorized service center on customer owned goods, any and all charges incurred from priority

service requests (Rush Service) or priority shipping for replacement parts. Any and all charges if no

problem is found.

Factory Service Terms

Return Authorization

All items being returned for any reason must have a Return Merchandise Authorization number. This

RMA # must be placed on the outside of the carton of the item being returned or the carton will be

refused upon delivery. Please contact your local dealer for a return merchandise authorization

number in the event your equipment is in need of factory service. Dealer stock items than cannot be

repaired on site will be returned to the dealer freight prepaid.

Field Service Terms

An Authorized DNA Warranty Service Center must perform any and all field warranty service work.

Customer will not pay for parts and/or labor provided the problem found is within warranty guidelines.

Proof of purchase must be provided at the time of service request. Transportation charges to and

from the Authorized Warranty Service Center are the responsibility of the customer. Rush service

charges and special freight charges for required parts are not covered under warranty and are also

the responsibility of the customer. If a unit is not easily transported to an authorized service center,

the customer is responsible for technician travel charges. Any charges for labor or processing when

no problem is found are also not covered under warranty. Any charges incurred for work performed

by an unauthorized service center are the responsibility of the customer.

DNA LLC

www.dnaamps.com.

[email protected]

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