An externally hosted image should be here but it was not working when we last tested it.
http://homepages.paradise.net.nz/quadroph
175Litres 33hz Fb
damping material -needed
rubber gasket-needed
at the moment lots of air puffs out around the woofer :-S
the rubber strip should fix that.
running of 30watts, wil have 60-which if proved stable(eti 480) will be bridged to 150watts.
it models up to 300watts rms within xmax :-D
meanwhile designing basshorn for my mate..
108db/2.83v shiva?
basshorn
Hi Charles,phase_accurate said:
Sorry for the interuption. I've been trying to contact you. Please email me.
Thanks,
Mike,
Great job on your sub.
yeh i know i ran out 
im getting some more later..you wouldnt beleive how hard it is to find some decent screws for mounting a speaker!
nice webcam quality pics lol,camera scans later :-D
did you know i could actualy fit a surprising amount of my body inside the speaker cut out while glueing the top of the port some more 😛
<skinyboy>
argh time for sleep! Tech in 7.5hrs!
😎
im getting some more later..you wouldnt beleive how hard it is to find some decent screws for mounting a speaker!
nice webcam quality pics lol,camera scans later :-D
did you know i could actualy fit a surprising amount of my body inside the speaker cut out while glueing the top of the port some more 😛
<skinyboy>
argh time for sleep! Tech in 7.5hrs!
😎
BTW Behringer bass processor that you wanna buy is a very nice thing 
Does wonders in da club especially on some techno tracks.
What is that thing on your home page???
Does wonders in da club
especially on some techno tracks.What is that thing on your home page???
Nice box - keep up the good work.
eti480 amp - reasonable for a simple amp, but would not trust them bridged. With a few modifications and a bit extra voltage supplied, these amps will run quite well at around 150W - let me know if you want more details.
Cheers🙂
eti480 amp - reasonable for a simple amp, but would not trust them bridged. With a few modifications and a bit extra voltage supplied, these amps will run quite well at around 150W - let me know if you want more details.
Cheers🙂
If I could suggest, flush-mounting the driver makes a huge difference
, also if you put the driver *inside* the box to screw it in, rather than outside, it will help the box farting alot.
Looks good! I wanna build some like that. 😀
, also if you put the driver *inside* the box to screw it in, rather than outside, it will help the box farting alot. Looks good! I wanna build some like that. 😀
which thing 😛
the super huge woofer?
yes please email me-i may go for a jayacar 350 watt amp instead or 250watt. i have 300va transformer 28-0-28
osmium@paradise.net.nz
flush mounting good idea although the wood is only 18mm mdf,andi dont have router they cost HEAPS to rent for a day!!!!
i cant mount it from inside the box unless now i put a baffle on the front
🙂
🙂 🙂 😎Email sent re: eti 480 mods
Regards router - all you really need is a small trimmer router. They are fairly cheap and Makita & Royobi make quite good ones. They are also easier to hold & use than full size router - you will be amazed how often you will use it !
Cheers
Regards router - all you really need is a small trimmer router. They are fairly cheap and Makita & Royobi make quite good ones. They are also easier to hold & use than full size router - you will be amazed how often you will use it !
Cheers
8 screws mount the jbl now
put some of this sealant strip for doors <rubber> against frame and cut out.seems much more better.i still dont trust,excursion is higher than i thought it would be.
impedence curve measurement>speakerworkshop wudnt do it>
silicon sealant soon,seal everything,and paint,then
Power and RS SPL meter...
the spl in port is high and nice! 😛
😎
put some of this sealant strip for doors <rubber> against frame and cut out.seems much more better.i still dont trust,excursion is higher than i thought it would be.
impedence curve measurement>speakerworkshop wudnt do it>
silicon sealant soon,seal everything,and paint,then
Power and RS SPL meter...
the spl in port is high and nice! 😛
😎
CentauriCentauri said:
Please could you provide details of uprating - I bought the SC480 kit (the updated model from Jan '03 Silicon Chip). Thinking of using higher voltage transistors with two/three pairs of MJ15003/4. Would it be worth using a regulated supply?
Regards
Nix
Hello Mikee,
I built a pair if ETI-480 amps decades ago into a Jap integrated amp and running +/- 45V supplies with 2SA1106/2SC2581 ? Jap flatpack output transistors and it worked and sounded great and never failed.
I did however have twin 5.25" fans providing enough airflow to keep the heatsinks stone cold during party usage.
In this design the DC rolloff cap is sonically very apparent and the power supply connections need to be re-routed, and the speaker neutral return needs to go directly to the psu central earth and nowhere near the amplifier pcb.
The ETI-480 is a fine sounding amp when implemented correctly.
Eric.
I built a pair if ETI-480 amps decades ago into a Jap integrated amp and running +/- 45V supplies with 2SA1106/2SC2581 ? Jap flatpack output transistors and it worked and sounded great and never failed.
I did however have twin 5.25" fans providing enough airflow to keep the heatsinks stone cold during party usage.
In this design the DC rolloff cap is sonically very apparent and the power supply connections need to be re-routed, and the speaker neutral return needs to go directly to the psu central earth and nowhere near the amplifier pcb.
The ETI-480 is a fine sounding amp when implemented correctly.
Eric.
checked impedence ,the graph is just like the winisd modeling.
tuning is exactly correcct at 33hz 😎
after silicon sealing everything,il try it in my mates car 1.3kw @ 2ohm amp 300 @ 8ohm,or so.
tuning is exactly correcct at 33hz 😎
after silicon sealing everything,il try it in my mates car 1.3kw @ 2ohm amp 300 @ 8ohm,or so.
For those of you who have expressed interest in the ETI480 power upgrade, I have posted the schematic in the Solid State forum at
http://www.diyaudio.com/forums/showthread.php?s=&threadid=18095
Cheers
http://www.diyaudio.com/forums/showthread.php?s=&threadid=18095
Cheers
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