sae audio K8 K Series Professional Power Amplifier User Manual

: June 4, 2024
: sae audio

Table of Contents

Sae audio K8 K Series Professional Power Amplifier
Important Safety Notice
Safety instructions
Foreword
Front Panel
Rear Panel
Specifications
Troubleshooting
Warranty
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Sae audio K8 K Series Professional Power Amplifier

sae-audio-K8-K-Series-Professional-Power-Amplifier-
product

Important Safety Notice

Read the rules, pay attention to all warnings, and comply with these rules.
It is forbidden to spray liquid around the product. Please do not place the liquid container above the product, such as vases, etc. The dry cloth and air pressure gun can be used for cleaning.
Be careful not to form a hot air circulation. Please install as the recommended way.
Do not install the product near the heat source, and try to keep the environment temperature below 35°C.
@Ground protection, when connect to the power supply, corresponding ground protection measurements should be taken.
Please protect the power cord from treading and squeezing, especially the plug, power socket and connected devices. Warning: A power plug/Equipment coupler, as a circuit cutting-off device, should be kept available at any time.
Must be in accordance with the following sequence switch to use the product: Turn on: Pre-Amp~ Amplifier;
Turn off: Amplifier~ Pre-Amp.
Before power is on, must ensure that the power supply voltage in accordance with the requirement of the product.
If the input signal parallels with more than three power amplifiers, it is suggested to use a signal distributor to make sure no distortion of the input signal.
Do not connect an output port of one channel to an input port of the other channel in the same amplifier. Do not connect an output port into an output port of another amplifier in series or parallel.
When configuring an amplifier into a system, the output power of the amplifier should be 50%-100% higher than the nominal power which is the same impedance with the loudspeaker. And be careful to use the bridge mode.
It is forbidden to connect an oscilloscope probe into an amplifier output interface in the state of the bridge when the amplifier is being maintained, to avoid the amplifier or oscilloscope got broken.
Suggest 1) Please use qualified NL4 SPEAKON connectors.

Please make the appropriate power distribution when more than one amplifier working at the same time, to achieve a qualified using environment.

Safety instructions

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Foreword

Welcome
Thank you for purchasing our products. The K series professional power amplifier, simple to operate stable high performance-cost rate. Special design for KARAOK ROOM sound reinforcement, small performances, lectures and other places. Please take the time to study this manual so that you can obtain the best possible service from your amplifier.

Unpacking
Please unpack and inspect your amplifier for any damage that may have occurred during transit. Confirm the preset voltage of the power amplifier matches your local voltage rating ( Please refer to the print on the rear panel for detailed information). We also recommend that you save all packing materials so you will have them when need to
return the power amplifier.

Important safety precautions
Our products have already taken the safe requirement into consideration and all the finished products have been tested under the requirement of the government before sale. Due to the inner dangerous high voltage and electricity, we strongly recommend you read all instructions, warnings and cautions contained in this manual. It will increase the chance of getting shocked by the electricity if the product falls down, recess in the appearance, soaked or there were some parts loose internal. If there are problems above, please turn off the power immediately and send the defective units to local distributor for service.

Power & Wiring distribution
Referring to the power dissipation and power supply/AC of different products for wiring
We suggest the users to match not less than the following wiring size specifications, to obtain better comprehensive properties.

Front Panel

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fig-3

Cleaning guide of the dust filter

The first time cleaning of the strainer mesh should be right after installation. Recommend cleaning the strainer mesh quarterly. Please do not run the product without the dust filter, or it makes the service life of the product shorten. Such conditions will be considered as no warranty.

Rear Panel

Specifications

Model KS
Output power
80 stereo 900Wx2
40 stereo 1200Wx2
80 bridge N/A

Other Specifications
Frequency response THD+N
S/N rate

Input sensitivity
Input impedance(bal/unbal) Voltage gain (8 ohm ) Output circuitry
Cooling

Protection

20Hz-20KHz( +0/-0.8dB)
:, Q.05%
28 dB
0.775V
20kO/10kO
39.B
Class I
Airflow from front to rear Soft start, short circuit, over load, clip limit, over heat, over-voltage, progressive volume

Connection

Input
Output
Function
Front panel
Balance input XLR-F, Balance output XLR-M
Two red and black Binding posts/NL4 SPEAKON
Front panel indicator: Working indicator Signal/Clip/Protection/Power on/ volume control knob

Dimensions/Weight

Product Dimension(mm)
Packaging Dimension(mm)
G.W.
Power Supply
(220V /240V ~)
483x298x89
560x435x170
12.7kg
1.0mm2

Product dimension(mm)

The manufacturer reserves the right to make changes in the specification without prior notice. The final specification is subject to the user’s manual.

Troubleshooting

After powered without any response
Measure the outlet with a multimeter to check if there is power available and when no multimeter, you can have a test pencil. If the power supply is normal and the amplifier still no response when powered then there is something wrong with the amplifier, need a professional person to check it.

No signal output

First, check if the signal input is right.
A check the connection of XLR if the 2 and 3 reverted or the ground is reliable. Different circuitry designs will have different connect way of the XLR, please follow the 2+, 3- to soldering. It can not be judged by comparing it with other amplifiers
(including other amplifiers in the same factory).
The signal light doesn’t light up
If all the signal input is fine and the signal light doesn’t light up then may the amplifier has fail, you need to ask a professional person to check it.
Signal input normal but no sound
The signal light will flash with the change of input Volume, but now sound out, then you can check the connect of speakon if it is connected good and the wires are connected right(some times the problem of the wires connect, check its±l and ±2 connect), after the check above if still no sound out, please change a speaker cable and check again. Because some times also caused by the bad quality of the Speakon connector problem of the amplifier.
Through experience, it may be caused by the bad connection of some plugs and the socket.

Output sound distortion

After check, the signal and loudspeaker they are fine and still can hear distortion when small sound, then may the amplifier has failed, need a professional person to check it.
Some frequency band has distortion
First, check if the loudspeaker is already overloaded, normally
judge it in 95~105dB for higher SPL we don’t comment here. Here we just think about the failure recovery of the amplifier. If in the middle have some rupture sound and smaller volume more obvious, then it should be crossover distortion of the amplifier and this kind of distortion is easy to confuse with the failure of the loudspeaker itself. If the amplifier has a problem then you should send it back to the manufacturer for repair.
Distortion is High SPL
If the sound is normal when small volume and then you need to check the limit SPL of the loudspeaker. You can listen to it at a suitable volume and if clip light works, then you need reduce the output. Both loudspeakers and amplifiers have limitations, you should use them within their limit if in very high SPL they have distortion you should take care of them and reduce the output to the right position.

The protection light blinks
When the PROT light works, the amplifier into protection mode.

Maybe the temperature is too high or output short or near short and they are not failures they can recover after you can use it normally. But over heat will take more time to recovery. Also when overheating happened you should check the fan and the temperature of the install environment, if you should solve the problem then can use an amplifier. If you think the speaker was short, you can with a multimeter to check if the resist is lower than 2 ohms or 1 ohm with DC(Please calibrate the multimeter to measure for accuracy because of the small resistance).
If the PROT light always lights up then it should be the problem with the amplifier, you should send it back to a professional person for repair.

Hum in the system

Hum exists even when there is no signal
Please keep the amplifier away from the earth wire of power supply cables, just connect the firewire and zero wire, no ground wire. If the hum is still existing, it can be judged that there are some problems with the amplifier. Please get in touch with professionals.
Hum exists when the system is completely connected
This is caused by the different ground voltages in different devices in the system, mainly happens when the power supply is under three-phase distribution condition, each device is connected to a different phase. This is not caused by the amplifier.

Solution experiences, just for reference

Combing the electricity, the power distribution box using the same one for all if possible.
Make sure the grounding wire potential is zero and force the different grounding wires to the same level, if the grounding wire Itself is charged, indicates that the wire may be connected with the zero line. Please solve this problem.
If unavailable above, then only to disconnect the ground wires of all devices, which helps to reduce the AC. But this is not meet the safe use of electricity, users must know what will happen if to do in this way. We do not recommend floating use.

The amplifier required maintenance in the condition below:

If the amplifier smokes or smells burning.
If the cabinet has severe indentation and deformation
If the amplifier is dipped into the water
If the internal components loosen
If the AC breaker skips out when the current increases.

Warranty

Disclaimer
SAE Audio Co., Ltd. is not responsible for any damage of loudspeakers or other equipment caused by negligence or improper installation.
SAE Audio Co., Ltd. offers 2 years limited warranty for this product.
SAE Audio Co., Ltd. Guarantees that this product has no material defect for two years from the date of the sale; if the damage is caused under the normal installation and operation, SAE Audio Co., Ltd. shall change t he defective component and repair the faulty product for free according to this Quality Guarantee Agreement. However, users must send the product to our factory or any authorized maintenance points or designated distributors, affording the re-paid freight, together with buying proof (including customer copy of product warranty card and payment receipt or invoice copy).
As per this Quality Guarantee Agreement, the returned product must be judged to have a manufacturing defect itself after our inspection. This agreement doesn’t apply for products with damage caused by any wrong operation negligence, accident, inappropriate installation, or products with no date code and sequence no or damaged ones beyond recognition.
SAE Audio Co., Ltd. shall not afford responsibility for any damage caused by accident or indirect factors. The agreement authorized you specific legal rights.