'Perceive' Contruction Diary

[ShinOBIWAN]

OK managed to take the latest pics today and upload them:







Got the whole of this week off so hoping to get these really moving.

[pinkmouse]

Coming together nicely!

lufbramatt- Here!

[ShinOBIWAN]

Originally posted by lufbramatt wow

looks like a very impressive project so far, will be very keen on seeing the finished article.

and I sympathise with you about the router- i recently killed my dremel in a similar fashion

Cheers buddy.

i was wondering, seeing as there are some very expensive commercial amps available, how the amps a lot of people use in active systems compare? does the qualitiy of the amp not have as much effect as the amps are only handling a small range of the audio spectrum?

These are the highly regarded P101 amps from ESP. They use lateral MOSFET's and specifically the SK1058/SJ162. These can be found in highend amps costing upto £1000's.

Your also spot on with your observation regarding less work. Each driver has its own amp and each amp only has to cover a limited frequency range. This means lower THD, IMD, and generally a higher quality sound than a single amp could achieve. The passive XO network is also removed from the equation so the amp is directly coupled to the speaker, meaning more control, power and better quality.

[lufbramatt]

cheers for the quick reply

im considering building some active speakers for my final year design project next year for uni, those amps look very interesting.
Obviously im gonna have to do a lot more research, but have all summer to get to grips with what is required. If i can get some interesting materials selection in there too ill be set . . .

pinkmouse- hehe it looks so different from the air! small world and all that-

[David Gatti]

Thats' the best mounting of the ATC mid I've seen. Great work.

[David Gatti]

By the way, one thing you may want to consider is decoupling the drivers/mounting screws from the baffle with a rubber or felt gasket & rubber washers.

[ShinOBIWAN]

Originally posted by David Gatti
Thats' the best mounting of the ATC mid I've seen. Great work.

Thanks David, I know what you mean. Most bolt through the front, including ATC, and it wasn't the look I was after.

Still admire your sterling work on the Delta's. I saw your work posted here and it made me sit up and want to be build that' no holds barred' speaker that I'd always planned to build but never got any further than a few lose idea's in my head.

Originally posted by David Gatti
By the way, one thing you may want to consider is decoupling the drivers/mounting screws from the baffle with a rubber or felt gasket & rubber washers.

Already done m8, ATC supply a rubber gasket which interfaces with the drive unit and baffle. I've also used 2 felt washers on each of the 4 mountings.

[ShinOBIWAN]

Also I'm desperately looking for some half decent spikes here in the UK. In my search I found these from BrianGT's gallery which are just the look I'm after.



Anyone know of something similar in the UK?

Same goes for some high quality banana terminals.

[ShinOBIWAN]

These ViaBlue HS Elite look rather tasty:



Or the QTC Elite, bit expensive at $20 each though

[ScottG]

http://www.google.com/search?hl=en&q...=Google+Search

don't know if Partsexpress or others do over seas shipping (but some where in the search you might find a UK supplier..)

also note that they have several "colors" available -

http://www.partsexpress.com/webpage....cabinet_spikes

As to the bannana connectors - you won't need them assuming you direct connect the amps to the drivers, but you will need good female RCA connectors - the best of which are the new WBT "Next Gen" pure silver (if your using silver wire) or their copper version if your using copper wire - and if so the only copper wire I'd consider is this (and its the ONLY place I know of to get it):

http://home.att.net/~chimeraone/ccca...diosolder.html

As for the WBT connectors - you should be able to get them anywhere..