Hi there...so I have my 50's birthday party planed this summer on my terrace. There will be about 50 people and planed to party hard....so needs to be loud and powerful down there 🙂.
I have two 8" faital coax 8hx150...can accept 250watt on 8ohms. I also plan to use 18" sub from redcatt in 200l box tuned to 35hz...can accept 600w in 8ohms.
This will give me about 121db from 35-20khz...which should peak to about 128db...think this is enough. All sims for excursion in winSD are within drivers limits...tops will play from about 150hz. Since coax are messed all arround I would like to use DSP for them.
So now the dilemmas are how to amplify setup. I would like to go active. TPA3255 are a logical choice...there are cheap and goood 1.0, 2.0. 2.1. and also 8 channel board on market.
The only problem I see is that TPA3255 will not deliver me full power on 8ohms...so 2x300w will be acutally 2x150w etc.
Board I am looking are
2.0...
https://www.aliexpress.com/item/1005005148992816.html?spm=a2g0o.detail.1000014.6.5f3d6a2bBBgLvI&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40000.333918.0&scm_id=1007.40000.333918.0&scm-url=1007.40000.333918.0&pvid=f9e11a82-7d51-4de4-92a9-e8c46f565ae8&_t=gps-id😛cDetailBottomMoreOtherSeller,scm-url:1007.40000.333918.0,pvid:f9e11a82-7d51-4de4-92a9-e8c46f565ae8,tpp_buckets:668#2846#8107#91&pdp_npi=3@dis!EUR!45.2!45.2!40.68!!!!@2101efeb16816386668278979ec2c7!12000031864330394!rec!SI!172815269
https://www.aliexpress.com/item/1005004598563989.html?spm=a2g0o.productlist.main.83.385aSTSLSTSLDD&algo_pvid=0a4c6459-8a15-4773-8f42-1d4a03f2763a&algo_exp_id=0a4c6459-8a15-4773-8f42-1d4a03f2763a-41&pdp_npi=3@dis!EUR!33.81!33.81!!!!!@21021d7b16814526430125714d06d0!12000029777509797!sea!SI!172815269&curPageLogUid=i4ra1OvaDXR0
https://www.aliexpress.com/item/1005004922824245.html?spm=a2g0o.productlist.main.63.37f46b44OEDKiN&algo_pvid=0e08141f-2099-4fee-8312-558e8609b35e&algo_exp_id=0e08141f-2099-4fee-8312-558e8609b35e-31&pdp_npi=3@dis!EUR!32.17!20.91!!!!!@2122457116814531772204576d0713!12000031031282521!sea!SI!172815269&curPageLogUid=RSK2XhWPoXJg
mono...
https://www.aliexpress.com/item/1005003292335631.html?spm=a2g0o.productlist.main.63.4bf735c1Adtb7R&algo_pvid=d400618e-be49-448a-a5ea-ebf06f873b00&algo_exp_id=d400618e-be49-448a-a5ea-ebf06f873b00-31&pdp_npi=3@dis!EUR!67.1!48.98!!!!!@211bf3f816816404595056268d0778!12000025052925707!sea!SI!172815269&curPageLogUid=d9u2Vl5vOEr5
brided...
https://www.aliexpress.com/item/1005005065836249.html?spm=a2g0o.productlist.main.73.4bf735c1Adtb7R&algo_pvid=d400618e-be49-448a-a5ea-ebf06f873b00&algo_exp_id=d400618e-be49-448a-a5ea-ebf06f873b00-36&pdp_npi=3@dis!EUR!101.58!101.58!!!!!@211bf3f816816404595056268d0778!12000031503253377!sea!SI!172815269&curPageLogUid=GLxhpLUmpwnC
8 channel...can those be bridged?
https://www.aliexpress.com/item/1005005072499115.html?spm=a2g0o.detail.1000014.7.6c086734oKy6Ef&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40000.333918.0&scm_id=1007.40000.333918.0&scm-url=1007.40000.333918.0&pvid=5d06e727-e97c-422d-bd11-afb100cee9a0&_t=gps-id😛cDetailBottomMoreOtherSeller,scm-url:1007.40000.333918.0,pvid:5d06e727-e97c-422d-bd11-afb100cee9a0,tpp_buckets:668#2846#8107#91&pdp_npi=3@dis!EUR!184.44!184.44!!!!!@2103205116816405252152011e7b27!12000031527581442!rec!SI!172815269
For tpa3255 there are really cheap power supplies also available...36v... https://www.aliexpress.com/item/1005001976502850.html?spm=a2g0o.detail.1000014.3.240f3f6dDxIkwD&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40050.281175.0&scm_id=1007.40050.281175.0&scm-url=1007.40050.281175.0&pvid=3cf183e8-a95d-4366-82cd-f1ba97f8602b&_t=gps-id😛cDetailBottomMoreOtherSeller,scm-url:1007.40050.281175.0,pvid:3cf183e8-a95d-4366-82cd-f1ba97f8602b,tpp_buckets:668#2846#8107#1934&pdp_npi=3@dis!EUR!13.84!6.91!!!!!@2103146f16814533844377938e0f9e!12000032343485394!rec!SI!172815269
So what do you think...should I go this route or go with the plate amps, or different d-class chips?
Thanks for you input...
Milos
I have two 8" faital coax 8hx150...can accept 250watt on 8ohms. I also plan to use 18" sub from redcatt in 200l box tuned to 35hz...can accept 600w in 8ohms.
This will give me about 121db from 35-20khz...which should peak to about 128db...think this is enough. All sims for excursion in winSD are within drivers limits...tops will play from about 150hz. Since coax are messed all arround I would like to use DSP for them.
So now the dilemmas are how to amplify setup. I would like to go active. TPA3255 are a logical choice...there are cheap and goood 1.0, 2.0. 2.1. and also 8 channel board on market.
The only problem I see is that TPA3255 will not deliver me full power on 8ohms...so 2x300w will be acutally 2x150w etc.
Board I am looking are
2.0...
https://www.aliexpress.com/item/1005005148992816.html?spm=a2g0o.detail.1000014.6.5f3d6a2bBBgLvI&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40000.333918.0&scm_id=1007.40000.333918.0&scm-url=1007.40000.333918.0&pvid=f9e11a82-7d51-4de4-92a9-e8c46f565ae8&_t=gps-id😛cDetailBottomMoreOtherSeller,scm-url:1007.40000.333918.0,pvid:f9e11a82-7d51-4de4-92a9-e8c46f565ae8,tpp_buckets:668#2846#8107#91&pdp_npi=3@dis!EUR!45.2!45.2!40.68!!!!@2101efeb16816386668278979ec2c7!12000031864330394!rec!SI!172815269
https://www.aliexpress.com/item/1005004598563989.html?spm=a2g0o.productlist.main.83.385aSTSLSTSLDD&algo_pvid=0a4c6459-8a15-4773-8f42-1d4a03f2763a&algo_exp_id=0a4c6459-8a15-4773-8f42-1d4a03f2763a-41&pdp_npi=3@dis!EUR!33.81!33.81!!!!!@21021d7b16814526430125714d06d0!12000029777509797!sea!SI!172815269&curPageLogUid=i4ra1OvaDXR0
https://www.aliexpress.com/item/1005004922824245.html?spm=a2g0o.productlist.main.63.37f46b44OEDKiN&algo_pvid=0e08141f-2099-4fee-8312-558e8609b35e&algo_exp_id=0e08141f-2099-4fee-8312-558e8609b35e-31&pdp_npi=3@dis!EUR!32.17!20.91!!!!!@2122457116814531772204576d0713!12000031031282521!sea!SI!172815269&curPageLogUid=RSK2XhWPoXJg
mono...
https://www.aliexpress.com/item/1005003292335631.html?spm=a2g0o.productlist.main.63.4bf735c1Adtb7R&algo_pvid=d400618e-be49-448a-a5ea-ebf06f873b00&algo_exp_id=d400618e-be49-448a-a5ea-ebf06f873b00-31&pdp_npi=3@dis!EUR!67.1!48.98!!!!!@211bf3f816816404595056268d0778!12000025052925707!sea!SI!172815269&curPageLogUid=d9u2Vl5vOEr5
brided...
https://www.aliexpress.com/item/1005005065836249.html?spm=a2g0o.productlist.main.73.4bf735c1Adtb7R&algo_pvid=d400618e-be49-448a-a5ea-ebf06f873b00&algo_exp_id=d400618e-be49-448a-a5ea-ebf06f873b00-36&pdp_npi=3@dis!EUR!101.58!101.58!!!!!@211bf3f816816404595056268d0778!12000031503253377!sea!SI!172815269&curPageLogUid=GLxhpLUmpwnC
8 channel...can those be bridged?
https://www.aliexpress.com/item/1005005072499115.html?spm=a2g0o.detail.1000014.7.6c086734oKy6Ef&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40000.333918.0&scm_id=1007.40000.333918.0&scm-url=1007.40000.333918.0&pvid=5d06e727-e97c-422d-bd11-afb100cee9a0&_t=gps-id😛cDetailBottomMoreOtherSeller,scm-url:1007.40000.333918.0,pvid:5d06e727-e97c-422d-bd11-afb100cee9a0,tpp_buckets:668#2846#8107#91&pdp_npi=3@dis!EUR!184.44!184.44!!!!!@2103205116816405252152011e7b27!12000031527581442!rec!SI!172815269
For tpa3255 there are really cheap power supplies also available...36v... https://www.aliexpress.com/item/1005001976502850.html?spm=a2g0o.detail.1000014.3.240f3f6dDxIkwD&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40050.281175.0&scm_id=1007.40050.281175.0&scm-url=1007.40050.281175.0&pvid=3cf183e8-a95d-4366-82cd-f1ba97f8602b&_t=gps-id😛cDetailBottomMoreOtherSeller,scm-url:1007.40050.281175.0,pvid:3cf183e8-a95d-4366-82cd-f1ba97f8602b,tpp_buckets:668#2846#8107#1934&pdp_npi=3@dis!EUR!13.84!6.91!!!!!@2103146f16814533844377938e0f9e!12000032343485394!rec!SI!172815269
So what do you think...should I go this route or go with the plate amps, or different d-class chips?
Thanks for you input...
Milos
Last edited: