32 X 4inch 2way Coaxial Car Speakers |
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Tune In
Registered User Joined: 09 June 2008 Status: Offline Points: 208 |
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Posted: 23 October 2020 at 2:40am |
Greetings
I have acquired 32 X 4inch 2way coaxial car speakers, i am looking for and am open to any suggestions too what I can do with them I was contemplating/thinking/toying with the idea of a soundbar/column cabinet with 8 speakers per box, what are your thoughts/ideas as said I am open to any suggestions On the packaging it reads the following: "4-Inch Car Speakers Max 80W power, 4 ohm impedance 2-way coaxial driver Hot press PP cone with urethane surround Strontium magnet Large size conex semper High power Strontium magnet Compact mesh grill design Large size conex semper they look very similar to these https://www.ebay.co.uk/itm/141978411616 Giving Thanks In Advance
Edited by Tune In - 23 October 2020 at 12:20pm |
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Conanski
Old Croc Joined: 26 January 2006 Location: Ottawa, Canada Status: Offline Points: 2537 |
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There are no commercial column/array speaker systems built with that style of coaxial speaker. The reason for that is simple.. the high frequency elements are too far away from one another which makes the already inherent comb filtering that occurs with this type of speaker system that much worse.
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snowflake
Old Croc Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3122 |
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you could try a curved CBT array. But I agree 4" is pushing the limits of close spacing for full range drivers. commercially available CBTs seem to use 2.5" drivers. You might just get away with it, or think the compromise on HF response is worth the extra bass extension from a 4" driver.
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jbl_man
Moderator Group Joined: 12 January 2005 Location: London. Status: Offline Points: 11155 |
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Just copy a Bose 802. Wont sound very good,and certainly won't be hifi, nor very loud, but for background music in a pub/restaurant it might suffice.
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Be seeing you.
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Tune In
Registered User Joined: 09 June 2008 Status: Offline Points: 208 |
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If I go the 8 in a cab route, what should be the wiring configuration
Series or parallel, also what would be the ohms and what wattage amp would suffice? Thanks (Maybe I should transfer this to the Newbie Discussion) |
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concept-10
Young Croc Joined: 17 May 2016 Status: Offline Points: 1293 |
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Wire them series parallel and they will be 4ohm, 8 in a box with a curved baffle or a column with the drivers staggered at say 5 degrees left and right and you will be ok ish, chuck some eq at it and you might be surprised, good luck bud and let us know how you get on
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markie
Old Croc Joined: 31 October 2005 Location: Sunny Liskeard. Status: Offline Points: 4570 |
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4x 4 ohm speakers wired in parallel will come down to 1 ohm. Adding a similar line in series to the first will give 2 ohms.
Alternatively wiring similar lines of 4 in series will be 16 ohms. Then add a similar line in parallel to the first......overall impedence for 8 speakers is 8 ohms.
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If it's got wheels or tits it's gonna cost a fortune
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snowflake
Old Croc Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3122 |
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there are loads of ways to wire speakers in an array. start reading about bessel arrays, constant beamwidth transducers etc
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APC321
Young Croc Joined: 24 August 2013 Location: West Midlands Status: Offline Points: 684 |
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4" driver is the same size as used in a jbl control 1.
Why not try finding a pair of blown control 1's, and put a pair of your coaxial car speakers into them? Being coaxial (ie. point source) I think they would sound good close-up as computer monitors etc. Would give an idea as to how a single driver performs in a small ported box, which may lead to some arraying ideas. |
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JonB67
Young Croc Joined: 22 April 2016 Location: UK Status: Offline Points: 1376 |
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Any merit in snipping the hf tweeter cables and just arraying the 4" drivers? Maybe leave one or two just to keep some hf content there?
Ive literally no idea, but seems logical if the hf will be a mess and the 4" will probably go pretty high on their own. |
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madboffin
Old Croc Joined: 03 July 2009 Location: Milton Keynes Status: Offline Points: 1538 |
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That is a good suggestion. You could also configure 8 of them as a "barber pole" or spiral column with each driver offset by 5 to 10 degrees relative to the one below / above. If you get the offset angle right it should give a reasonable match between the HF and mid / low coverage - which will be quite wide, assuming a narrow column. |
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markie
Old Croc Joined: 31 October 2005 Location: Sunny Liskeard. Status: Offline Points: 4570 |
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I'm confused. How is it possible to wire 8 x 4 ohm speakers in series/parallel to get an overall 4 ohm impedence????
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If it's got wheels or tits it's gonna cost a fortune
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