Fact Sheet
HIGH PERFORMANCE 
IN-CEILING/IN-WALL SPEAKERS
OWNER’S MANUAL
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WARRANTY
1 YEAR WARRANTY EXTENSION PLAN
BLUETOOTH CONNECTIVITY
(ONLY FOR BLUETOOTH VERSION):
All Herdio speaker products have 1 year Limited
Warranty against defects in materials and
workmanship. Proof of purchase must accomp any all 
claims. During the warranty period Herdio will replace
any defective part and correct any defect in 
workmanship without charge for either parts or labor. 
1. Make sure the Bluetooth Ceiling Speaker system 
is properly connected to a power Source, and 
speaker wires are connected correctly.
2. Power ON the speaker system, and you shall hear 
hear a tone indicating the Bluetooth system is ready 
for pairing.
3. Then, go to your Smart device's Bluetooth Network 
Settings, The Bluetooth Network Name will appear 
as 'Herdio' on your device list, and click for connection.
No password is required to connect but if you are 
prompted enter '0000' (4 zeroes).
4. You shall hear another indication tone when a 
successful Bluetooth connection is established, then 
you are ready to enjoy the music.
How would you like to extend the warranty on your 
productfor 1 Y EAR? Simply write and post a review 
of the product online. Then, register your product 
online at Herdiotech.com or sendan e-mail to 
warranty@ Herdiotech.com in cluding your name ,
address, and phone number, as wellas a link to the 
review.
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 TECHNICAL SPECIFICATIONS 
HCS418/HCS418BT HCS528/HCS528BT HCS628/HCS628BT
Sensitivity:
Impedance:
Cut-Out Diameter: 
HCS828/HCS828BT
MODEL NO: 
MAX Power Output: 
80W 150W 200W 300W
SPEAKER SIZE :
4 Inch 5.25  Inch 6.5 Inch 8 Inch 
89db  89db  89db  89db  
8 Ohms  8  Ohms 8 Ohms  8 Ohms 
Frequency Response: 60-20KHZ  60-20KHZ
60-20KHZ
 60-20KHZ
5.7 Inch(14.5  CM)  7.3  Inch(18.5 CM) 8 Inch(20.5 CM)  8  Inch(20.5 CM)
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MO DEL : SPEAKER SIZE : Bluetooth Function :
HCS418
HCS528
HCS628
HCS828
HCS418BT
HCS528BT
HCS628BT
HCS828BT
NO
NO
NO
NO
YES
YES
YES
YES
4 inch
5.25 inch
6.5 inch
8 inch
4 inch
5.25 inch
6.5 inch
8 inch
Note:Always allow at least one-half inch 
between a wall stud and the speaker cutout
or the locking tabs will not be able to swivel 
into place.
Connect the speaker wires
to the speaker
IReplace the metal grille.
Cut the drywall
(Installation hole)
1: Cut an installation hole over the ceiling.
Screw down each of the four Phillips head screws.
The locking tabs will swivel into place and secure 
the unit to the rear surface of the drywall.Put in the 
strips of adhesive to secure the grille.
2: Flip up the Speaker Mounting buckle.
3: Put the speakers up into the ceiling 
mounting hole.
4: The Mounting buckle will automatically 
flip down and get the speakers fastened 
into the celing.
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EnglishEnglish
English English
INSTALLATION GUIDE
1.Only for:HCS418\HCS528\CSH828
2.Only for:HCS628






