on Sale - $55/pr (drivers & XO)

[XtremeRevolution]

Re: on Sale - $55/pr (drivers & XO)

Which parts are those? We'll find a work-around.



From Post #18 by Chris Roemer in this thread ...

My cabinet choice: 28"h x 6"w x 9.5"d. 0.55 cf
A 2"d x 7" long rear vent centered 10" up from the bottom tunes this box to 39 Hz yielding an F3 of 38. I'd mount the upper woofer's center 4" down from the box top. This puts the tweeter at about 21", so theese should sound best on about 12" high stands.

Part numbers that are backordered are:

4 Ohm 5W Resistor Part Number: 015-4
20 Ohm 10W Resistor Part Number: 016-20

Was he suggesting that the floorstanding speakers themselves should be on 12" high stands as well?

I imagine if the upper woofer's center is 4" down from the box top at 24", and the tweeter is at 21", then the bottom woofer's center is at 18"?

The parts list I was looking at was back from post 96 on page 5.

[XtremeRevolution]

Re: on Sale - $55/pr (drivers & XO)

You can replace 015-4 with 016-4 from the ntn parts list. http://www.parts-express.com/pe/show...rtnumber=016-4

Thanks. That solves one of my problems.

What about part 016-20 for the 20ohm 10W resistor?

[Voladin]

Re: on Sale - $55/pr (drivers & XO)

Thanks. That solves one of my problems.

What about part 016-20 for the 20ohm 10W resistor?

016-20 shows in stock for me, but if it isn't you could use 004-20. Costs a bit more but not much. http://www.parts-express.com/pe/show...tnumber=004-20

[Herman Trivilino]

Re: on Sale - $55/pr (drivers & XO)

Was he suggesting that the floorstanding speakers themselves should be on 12" high stands as well?

No. The purpose of the stands is to get the tweeter at the same height as your ear.

I imagine if the upper woofer's center is 4" down from the box top at 24", and the tweeter is at 21", then the bottom woofer's center is at 18"?

I think so, yes.

[XtremeRevolution]

Re: on Sale - $55/pr (drivers & XO)

016-20 shows in stock for me, but if it isn't you could use 004-20. Costs a bit more but not much. http://www.parts-express.com/pe/show...tnumber=004-20

It does show in stock, but if you add it to your cart it shows backordered. At least it did for me.

Thanks!

Can anyone point me to the diagrams I need to follow to wire these up?

[fastbike1]

Re: on Sale - $55/pr (drivers & XO)

http://techtalk.parts-express.com/album.php?albumid=356

You can always build a 12" taller tower with a false bottom to keep you volume correct. Add some mass, mount your crossover in the bottom compartment, whatever.

As for the resistor, you're just looking for the same specs. Radioshack, etc.

It does show in stock, but if you add it to your cart it shows backordered. At least it did for me.

Thanks!

Can anyone point me to the diagrams I need to follow to wire these up?

[Voladin]

Re: on Sale - $55/pr (drivers & XO)

It does show in stock, but if you add it to your cart it shows backordered. At least it did for me.

Thanks!

Can anyone point me to the diagrams I need to follow to wire these up?

Ah ok. http://techtalk.parts-express.com/al...pictureid=3425

[MLS]

Re: on Sale - $55/pr (drivers & XO)

I got the holes routed for the drivers and the boxes glued up except for the face. I also cut some eggcrate foam I had and some carpet padding to fit in the box. I am using an 1-1/2" PVC plumbing pipe as the port. The interior dimension is actually 1-9/16" but I do not know what length to cut it to, It is cut to 8" right now. Once I know what length I will glue it into the recess I routed out and the trim it flush with the pipe and then use a round over bit to ease the port opening. I also used an 1/8" round over bit to ease the inside edge of the PVC pipe.

Any suggestions would be great. This is my first from scratch speaker build.

MLS

[XtremeRevolution]

Re: on Sale - $55/pr (drivers & XO)

http://techtalk.parts-express.com/album.php?albumid=356

You can always build a 12" taller tower with a false bottom to keep you volume correct. Add some mass, mount your crossover in the bottom compartment, whatever.

As for the resistaor, you're just looking for the same specs. Radioshack, etc.

Trust me, I wouldn't be here if I hadn't already found the same parts on radioshack, ebay, a variety of random electronics stores online, fry's electronics, you name it. I searched for a good 45 minutes before giving up and posting here, and with as little electric knowledge as I have, I wouldn't know what could be used to improvise.

[XtremeRevolution]

Re: on Sale - $55/pr (drivers & XO)

Can someone confirm I have the right parts for an MTM build?



Your Shopping Cart
Dayton DNR-20 20 Ohm 10W Precision Audio Grade Resistor
Part Number: 004-20
In Stock
$1.25 $2.50
2.2 Ohm 10W Resistor
Part Number: 016-2.2
In Stock
$0.44 $0.88
4 Ohm 10W Resistor
Part Number: 016-4
In Stock
$0.44 $0.88
2.2uF 100V Non-Polarized Capacitor
Part Number: 027-324
In Stock
$0.35 $0.70
6.8uF 100V Non-Polarized Capacitor
Part Number: 027-336
In Stock
$0.56 $1.12
2.0mH 18 AWG I Core Inductor
Part Number: 266-554
In Stock
$7.87 $15.74
Dayton Audio DMPC-5.1 5.1uF 250V Polypropylene Capacitor
Part Number: 027-423
In Stock
$2.54 $5.08
Jantzen 0.25mH 20 AWG Air Core Inductor
Part Number: 255-026
In Stock
$3.70 $7.40
45 Day No Hassle Return Policy Order Subtotal: $34.30

[Chris Roemer]

Re: on Sale - $55/pr (drivers & XO)

Ah ok. http://techtalk.parts-express.com/al...pictureid=3425

I'm sooo proud of you guys. Two people I've never even heard of before, one asking questions, and the rest of you giving good, solid help. I won't feel bad stepping out for a few minutes anymore, looks like you guys are running on your own.

:-))

Chris

[Chris Roemer]

Re: on Sale - $55/pr (drivers & XO)

[QUOTE=XtremeRevolution;1716264]Can someone confirm I have the right parts for an MTM build?

2.2 Ohm 10W Resistor
Part Number: 016-2.2
In Stock
$0.44 $0.88

2.0mH 18 AWG I Core Inductor
Part Number: 266-554
In Stock
$7.87 $15.74

Dayton Audio DMPC-5.1 5.1uF 250V Polypropylene Capacitor
Part Number: 027-423
In Stock
$2.54 $5.08

These 3 parts aren't a "horrible" match, but if you can, I'd change them:

2.2 ohm 10w resistor - 2.0 ohm is better
2.0mH #18 coil - a 2.0mH "I-core" is better (with the steel core)
5.1uF poly cap - a 5.6uF poly is better

Chris

[XtremeRevolution]

Re: on Sale - $55/pr (drivers & XO)

[QUOTE=Chris Roemer;1716270]

Can someone confirm I have the right parts for an MTM build?

2.2 Ohm 10W Resistor
Part Number: 016-2.2
In Stock
$0.44 $0.88

2.0mH 18 AWG I Core Inductor
Part Number: 266-554
In Stock
$7.87 $15.74

Dayton Audio DMPC-5.1 5.1uF 250V Polypropylene Capacitor
Part Number: 027-423
In Stock
$2.54 $5.08

These 3 parts aren't a "horrible" match, but if you can, I'd change them:

2.2 ohm 10w resistor - 2.0 ohm is better
2.0mH #18 coil - a 2.0mH "I-core" is better (with the steel core)
5.1uF poly cap - a 5.6uF poly is better

Chris

I thought I already had the I-core coil in my cart?

Anyways, here's an updated cart:


Your Shopping Cart
Item Qty. Price Total Remove
Dayton DNR-2.0 2 Ohm 10W Precision Audio Grade Resistor
Part Number: 004-2
In Stock
$1.25 $2.50
Dayton DNR-20 20 Ohm 10W Precision Audio Grade Resistor
Part Number: 004-20
In Stock
$1.25 $2.50
4 Ohm 10W Resistor
Part Number: 016-4
In Stock
$0.44 $0.88
2.2uF 100V Non-Polarized Capacitor
Part Number: 027-324
In Stock
$0.35 $0.70
6.8uF 100V Non-Polarized Capacitor
Part Number: 027-336
In Stock
$0.56 $1.12
2.0mH 18 AWG I Core Inductor
Part Number: 266-554
In Stock
$7.87 $15.74
Dayton Audio DMPC-5.6 5.6uF 250V Polypropylene Capacitor
Part Number: 027-425
In Stock
$2.63 $5.26
Jantzen 0.25mH 20 AWG Air Core Inductor
Part Number: 255-026
In Stock
$3.70 $7.40
45 Day No Hassle Return Policy Order Subtotal: $36.10


Anyone have any suggestions before I pull the trigger?

[XtremeRevolution]

Re: on Sale - $55/pr (drivers & XO)

From Post #18 by Chris Roemer in this thread ...

My cabinet choice: 28"h x 6"w x 9.5"d. 0.55 cf
A 2"d x 7" long rear vent centered 10" up from the bottom tunes this box to 39 Hz yielding an F3 of 38. I'd mount the upper woofer's center 4" down from the box top. This puts the tweeter at about 21", so theese should sound best on about 12" high stands.

I have a concern here. I plugged these numbers into WinISD and a .55 cubic foot box tuned to 39 hz requires a 2"D x 8.46" port length. Any idea why that is so? A 7.09" port length tunes to 42hz...

[Voladin]

Re: on Sale - $55/pr (drivers & XO)

[QUOTE=XtremeRevolution;1716275]

I thought I already had the I-core coil in my cart?

Anyways, here's an updated cart:


Your Shopping Cart
Item Qty. Price Total Remove
Dayton DNR-2.0 2 Ohm 10W Precision Audio Grade Resistor
Part Number: 004-2
In Stock
$1.25 $2.50
Dayton DNR-20 20 Ohm 10W Precision Audio Grade Resistor
Part Number: 004-20
In Stock
$1.25 $2.50
4 Ohm 10W Resistor
Part Number: 016-4
In Stock
$0.44 $0.88
2.2uF 100V Non-Polarized Capacitor
Part Number: 027-324
In Stock
$0.35 $0.70
6.8uF 100V Non-Polarized Capacitor
Part Number: 027-336
In Stock
$0.56 $1.12
2.0mH 18 AWG I Core Inductor
Part Number: 266-554
In Stock
$7.87 $15.74
Dayton Audio DMPC-5.6 5.6uF 250V Polypropylene Capacitor
Part Number: 027-425
In Stock
$2.63 $5.26
Jantzen 0.25mH 20 AWG Air Core Inductor
Part Number: 255-026
In Stock
$3.70 $7.40
45 Day No Hassle Return Policy Order Subtotal: $36.10


Anyone have any suggestions before I pull the trigger?

Looks good to me.