Hello Everybody!
Looks like this is my first post on the forum, although I have had my share of diy projects in my life.
Although I just finished a home BT speaker(2x faitalpro 4fe32, tpa3116), I feel it is missing in the sub/bass section. Thus, I decided to build another BT speaker, this time PORTABLE!
Until now I have ordered almost all of the necessities, but I am still missing on the high frequency section drivers. What I have ordered:
1. Sub driver: GHXAMP Speaker 4.5 inch Bass Subwoofer Loudspeaker Mid bass Large Rubber Composite Aluminum Basin 4OHM 90dB 50W for Peerless|Combination Speakers| | - AliExpress
(I started off with the TB w3-1876s but ended up ordering this one. Cheaper, higher efficiency, approx. same volume required for a box. See the apple homepod)
2. 26650 3,7v accu for power bank. (6)
3. BMS 3s 40A for the accu. 3S 40A BMS 11.1V 12.6V 18650 lithium battery protection Board with balanced Version for drill 40A current/ Motorcycle battery| - AliExpress
4. 12v power plug: DC099 5.5 mm x 2.1mm DC Power Jack Socket Female Panel Mount Connector metal 5.5*2.1 5.5*2.5|Connectors| | - AliExpress
5. white led power button: 1pc 12mm Metal Push Button Switch High Head Ring/Power LOGO 3 220V Self reset Momentary/locking Waterproof Car Auto Eng|Switches| | - AliExpress
6. 12,6v 5a charger: Liitokala 12.6 V 5A power 12.6V charger for CCTV battery 5A charger for 12V 12V 12V battery 12V battery charger|Chargers| | - AliExpress
7. heat shrink tube for power bank.
8. DC-DC converter for constant voltage on the amp: https://www.aliexpress.com/item/32963683426.html?spm=a2g0s.9042311.0.0.27424c4doXV1OT
9. bluetooth receiver with IR remote: https://www.aliexpress.com/item/4000813876859.html?spm=a2g0s.9042311.0.0.3fb84c4dDdj3jN
10. 2.1 preamp/divider for audio signal: https://www.aliexpress.com/item/32773087353.html?spm=a2g0s.9042311.0.0.3fb84c4dDdj3jN
11. YDA138 amp board x3: https://www.aliexpress.com/item/33059299045.html?spm=a2g0s.9042311.0.0.3fb84c4dDdj3jN
(I decided on this board just by looking on the datasheets of some power amp ics able to run off ~12V. I ended up with tpa3110 and YDA138 and went for yamaha one https://pdf1.alldatasheet.com/datasheet-pdf/view/205149/YAMAHA/YDA138.html / http://www.ti.com/lit/ds/symlink/tpa3110d2.pdf)
NOW, I need the high frequency drivers.
Starting off at the Apple example with the 7 HF drivers, but without the processor, I thought I could go with 8x 1inch 16ohm paralelled drivers per channel. I am now pondering what to do, what to choose from:
a. 8 pieces of https://www.aliexpress.com/item/32817199763.html?spm=a2g0o.productlist.0.0.635776d0SaQ6OX
b. 2 pieces of https://www.aliexpress.com/item/4000029127816.html?spm=a2g0o.productlist.0.0.55671b77BVk6Ch
c. 4 pieces of https://www.aliexpress.com/item/4000027091657.html?spm=a2g0o.productlist.0.0.7bbd4db8cYXelT
d. 4 pieces of https://www.aliexpress.com/item/33041383465.html?spm=a2g0o.detail.1000060.2.6de0acb308rv3a
e. 2 pieces of https://www.aliexpress.com/item/4000272833081.html?spm=a2g0o.productlist.0.0.8b001b771qkx1u
The housing I think I will build of plywood, vertical cylinder, down oriented woofer and BR ports, and the HF drivers will be mounted on the upper cylinder wall.
Now, what do you think about the parts, and what do you think I should chose as HF drivers? Fell free to chip in with an idea 🙂
Thank you.
Looks like this is my first post on the forum, although I have had my share of diy projects in my life.
Although I just finished a home BT speaker(2x faitalpro 4fe32, tpa3116), I feel it is missing in the sub/bass section. Thus, I decided to build another BT speaker, this time PORTABLE!
Until now I have ordered almost all of the necessities, but I am still missing on the high frequency section drivers. What I have ordered:
1. Sub driver: GHXAMP Speaker 4.5 inch Bass Subwoofer Loudspeaker Mid bass Large Rubber Composite Aluminum Basin 4OHM 90dB 50W for Peerless|Combination Speakers| | - AliExpress
(I started off with the TB w3-1876s but ended up ordering this one. Cheaper, higher efficiency, approx. same volume required for a box. See the apple homepod)
2. 26650 3,7v accu for power bank. (6)
3. BMS 3s 40A for the accu. 3S 40A BMS 11.1V 12.6V 18650 lithium battery protection Board with balanced Version for drill 40A current/ Motorcycle battery| - AliExpress
4. 12v power plug: DC099 5.5 mm x 2.1mm DC Power Jack Socket Female Panel Mount Connector metal 5.5*2.1 5.5*2.5|Connectors| | - AliExpress
5. white led power button: 1pc 12mm Metal Push Button Switch High Head Ring/Power LOGO 3 220V Self reset Momentary/locking Waterproof Car Auto Eng|Switches| | - AliExpress
6. 12,6v 5a charger: Liitokala 12.6 V 5A power 12.6V charger for CCTV battery 5A charger for 12V 12V 12V battery 12V battery charger|Chargers| | - AliExpress
7. heat shrink tube for power bank.
8. DC-DC converter for constant voltage on the amp: https://www.aliexpress.com/item/32963683426.html?spm=a2g0s.9042311.0.0.27424c4doXV1OT
9. bluetooth receiver with IR remote: https://www.aliexpress.com/item/4000813876859.html?spm=a2g0s.9042311.0.0.3fb84c4dDdj3jN
10. 2.1 preamp/divider for audio signal: https://www.aliexpress.com/item/32773087353.html?spm=a2g0s.9042311.0.0.3fb84c4dDdj3jN
11. YDA138 amp board x3: https://www.aliexpress.com/item/33059299045.html?spm=a2g0s.9042311.0.0.3fb84c4dDdj3jN
(I decided on this board just by looking on the datasheets of some power amp ics able to run off ~12V. I ended up with tpa3110 and YDA138 and went for yamaha one https://pdf1.alldatasheet.com/datasheet-pdf/view/205149/YAMAHA/YDA138.html / http://www.ti.com/lit/ds/symlink/tpa3110d2.pdf)
NOW, I need the high frequency drivers.
Starting off at the Apple example with the 7 HF drivers, but without the processor, I thought I could go with 8x 1inch 16ohm paralelled drivers per channel. I am now pondering what to do, what to choose from:
a. 8 pieces of https://www.aliexpress.com/item/32817199763.html?spm=a2g0o.productlist.0.0.635776d0SaQ6OX
b. 2 pieces of https://www.aliexpress.com/item/4000029127816.html?spm=a2g0o.productlist.0.0.55671b77BVk6Ch
c. 4 pieces of https://www.aliexpress.com/item/4000027091657.html?spm=a2g0o.productlist.0.0.7bbd4db8cYXelT
d. 4 pieces of https://www.aliexpress.com/item/33041383465.html?spm=a2g0o.detail.1000060.2.6de0acb308rv3a
e. 2 pieces of https://www.aliexpress.com/item/4000272833081.html?spm=a2g0o.productlist.0.0.8b001b771qkx1u
The housing I think I will build of plywood, vertical cylinder, down oriented woofer and BR ports, and the HF drivers will be mounted on the upper cylinder wall.
Now, what do you think about the parts, and what do you think I should chose as HF drivers? Fell free to chip in with an idea 🙂
Thank you.
Last edited:
Interesting build, thanks for posting, I'm surprised no-one has anything to add.
I have been looking at the GHXAMP 4.5 Subwoofer for a bluetooth speaker project myself.
Have you work out any data for cabinet volume and port dimensions relating to expected frequency/bass extension?
I have been looking at the GHXAMP 4.5 Subwoofer for a bluetooth speaker project myself.
Have you work out any data for cabinet volume and port dimensions relating to expected frequency/bass extension?