16 ohm speaker wanted

96terrano · 07-03-2012, 17:46

im restoring this old goodmans quadro 904 tape/ radio/ tv entertainment unit and one of the bass/mid speakers doesnt work, i took the speaker box apart and cheaked wiring that was fine, ive looked on ebay but cant find a speaker the right size, any ideas where i could get one

the speaker measures 10cm screw hole to screw hole

IMG_3393.jpg

(RIP) PLANK · 07-03-2012, 19:22

Could you use a speaker the right size but of lower impedance and fit a ballast resistor? Briggie would be the man to answer this one

briggie · 07-03-2012, 20:44

http://uk.rs-online.com/web/p/loudsp...633D4E4F4E4526

briggie · 07-03-2012, 20:51

or use two 8 ohm speakers in series ...Speaker A + Speaker B = Total Ohms Rating
8 Ohms + 8 Ohms = 16 Ohms

or like plank said a ballast resistor , but it will need to be a fairly high wattage one , unless you want to start farting about connecting resistors in paralell , much easier to find a 16 ohm speaker lol , normally found in security systems too

but its finding one the right size for your cabinet thats the prob

96terrano · 07-03-2012, 22:26

yeah, its a strange size speaker, thats the only problem, not the impedance

(RIP) PLANK · 08-03-2012, 18:10

how does a normal 10cm speaker compare? or could you use a slightly smaller speaker and make something to make up the difference?

96terrano · 09-03-2012, 01:07

Quote:

Originally Posted by PLANK

how does a normal 10cm speaker compare? or could you use a slightly smaller speaker and make something to make up the difference?

I tried a 10 cm but was about 2 cm to big

(RIP) PLANK · 10-03-2012, 14:21

what about and 8cm speaker? try this ebay search

http://www.ebay.co.uk/sch/i.html?_fr...All-Categories

96terrano · 10-03-2012, 15:25

Quote:

Originally Posted by PLANK

what about and 8cm speaker? try this ebay search

http://www.ebay.co.uk/sch/i.html?_fr...All-Categories

I think that'll work mate just measured the hole and I can mount 8cm

, cheers I'll order a pair

07-03-2012, 17:46	#1
96terrano Senior Member Join Date: Jun 2010 Location: Dumfries and Galloway, Scotland Vehicle: Nissan Terrano 2.7TD LWB Posts: 8,024	16 ohm speaker wanted im restoring this old goodmans quadro 904 tape/ radio/ tv entertainment unit and one of the bass/mid speakers doesnt work, i took the speaker box apart and cheaked wiring that was fine, ive looked on ebay but cant find a speaker the right size, any ideas where i could get one the speaker measures 10cm screw hole to screw hole IMG_3393.jpg

07-03-2012, 19:22	#2
(RIP) PLANK Senior Member Join Date: Mar 2006 Location: Central England, in the Heart of the Black Country Vehicle: T2 2004 TDI SE LWB Posts: 7,740	Could you use a speaker the right size but of lower impedance and fit a ballast resistor? Briggie would be the man to answer this one

07-03-2012, 20:44	#3
briggie Senior Member Join Date: Mar 2010 Location: peoples democratic republic of west yorkshire Vehicle: " alice " Posts: 10,473	http://uk.rs-online.com/web/p/loudsp...633D4E4F4E4526

07-03-2012, 20:51	#4
briggie Senior Member Join Date: Mar 2010 Location: peoples democratic republic of west yorkshire Vehicle: " alice " Posts: 10,473	or use two 8 ohm speakers in series ...Speaker A + Speaker B = Total Ohms Rating 8 Ohms + 8 Ohms = 16 Ohms or like plank said a ballast resistor , but it will need to be a fairly high wattage one , unless you want to start farting about connecting resistors in paralell , much easier to find a 16 ohm speaker lol , normally found in security systems too but its finding one the right size for your cabinet thats the prob

07-03-2012, 22:26	#5
96terrano Senior Member Join Date: Jun 2010 Location: Dumfries and Galloway, Scotland Vehicle: Nissan Terrano 2.7TD LWB Posts: 8,024	yeah, its a strange size speaker, thats the only problem, not the impedance

08-03-2012, 18:10	#6
(RIP) PLANK Senior Member Join Date: Mar 2006 Location: Central England, in the Heart of the Black Country Vehicle: T2 2004 TDI SE LWB Posts: 7,740	how does a normal 10cm speaker compare? or could you use a slightly smaller speaker and make something to make up the difference?

10-03-2012, 14:21	#8
(RIP) PLANK Senior Member Join Date: Mar 2006 Location: Central England, in the Heart of the Black Country Vehicle: T2 2004 TDI SE LWB Posts: 7,740	what about and 8cm speaker? try this ebay search http://www.ebay.co.uk/sch/i.html?_fr...All-Categories