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View Full Version : My little HT Two-Way build



bball09124
12-26-2008, 01:30 PM
My dad's got a Hitachi SR-903 amp, 20+ years old, that does 110 watts x 4 ohms and I have some AA Poly-Mids as well as some PG RSD's lying around. I'm a little bored, so I was thinking about throwing them together for an upgrade from the stock TV speakers.

Any recommendations for enclosure size for the mids? Poly-Mids or RSD mids? And I was going to just use the RSD crossover, unless someone can direct to a better and cheap alternative (under $30).

Beat_Dominator
12-26-2008, 01:50 PM
Are there tweeters?

bball09124
12-26-2008, 02:12 PM
Are there tweeters?

I was going to use my PG RSD tweets.

bball09124
12-26-2008, 02:21 PM
So I've got two .35 cube bookshelf enclosures that are ported to ~70 hz. Should I seal them up or leave em ported? And should I run RSD mids or Poly-Mids?

Pl8er
12-26-2008, 02:24 PM
Me personally I would use the RSD's as a comp set IF your going to use the crossovers. If you are not, I would go with the Poly Mids. I have both and like the sound from the poly's best.

bball09124
12-26-2008, 04:31 PM
Me personally I would use the RSD's as a comp set IF your going to use the crossovers. If you are not, I would go with the Poly Mids. I have both and like the sound from the poly's best.

Turns out the Poly-Mids didn't fit, and I didn't feel like modifying the hole. So RSD's it is. I should be done in an hour, I may post some pics.

Pl8er
12-26-2008, 04:41 PM
Please do. I'm interested.

bball09124
12-26-2008, 06:50 PM
Don't mind the silicone holding the tweeter. And I just left the other tweeter in, unwired, because it was going to be a pain to fill in the hole. A little ghetto, but the phonograph sounds great. A lot better than the $8 radioshack speakers he's had in there for 10 yrs.


http://i59.photobucket.com/albums/g320/bball09124/DSCF1407.jpg
http://i59.photobucket.com/albums/g320/bball09124/DSCF1408.jpg
http://i59.photobucket.com/albums/g320/bball09124/DSCF1406.jpg

bball09124
12-26-2008, 06:51 PM
We've also got a 50" TV coming, as well as a black XBOX 360 to go in the last open spot on the bottom shelf.

Pl8er
12-26-2008, 06:53 PM
I like the stand. :)

Doesn't look too bad at all.

bball09124
12-26-2008, 07:12 PM
I like the stand. :)

Doesn't look too bad at all.

$75 on craigslist. :D

joetama
12-26-2008, 11:45 PM
That is a nice old receiver. IIRC that is MOSFET.


If you get the speakers off the ground they will probably sound better too.

jdawg
12-27-2008, 12:10 AM
That is a nice old receiver. IIRC that is MOSFET.


If you get the speakers off the ground they will probably sound better too.

x2 get some like 3 foot stands, if the amps does 100x4 at 4ohms get a dual coil sub, like a 10, passive lowpass crossover. Oh you can buy **** at lowes and build some stands for like $15.

But if you do do be a ******* like me and forget to fill the pcv tubes with sand so they are all top heavy and fall over if someone breathes on it

bball09124
12-27-2008, 12:46 AM
That is a nice old receiver. IIRC that is MOSFET.


If you get the speakers off the ground they will probably sound better too.

Yeah, definitely need some stands. They can't go too high because I believe the TV will be over top of them.

Getting the new TV is the top priority now, so the speaker stands will have to wait for a little while. Hopefully I can snag a good deal tomorrow.

bball09124
12-27-2008, 12:56 AM
x2 get some like 3 foot stands, if the amps does 100x4 at 4ohms get a dual coil sub, like a 10, passive lowpass crossover. Oh you can buy **** at lowes and build some stands for like $15.

But if you do do be a ******* like me and forget to fill the pcv tubes with sand so they are all top heavy and fall over if someone breathes on it

I did some research on the receiver and I found that it is 110 watts x 2 @ 4 ohms and 90 watts x 2 @ 8 ohms.

However, there's a spot for speakers A and B. Are the A + B internally bridged inside the amp? I'd hate to blow the thing if I ran two 4 ohm speakers paralled down to 2 ohms and blew the thing. I'd like to hook up a little sub to it, but I don't want to risk it.

http://i59.photobucket.com/albums/g320/bball09124/DSCF1412.jpg

jdawg
12-27-2008, 01:02 AM
usaully on home receivers you can run both sets and it doesnt bridge, it splits the power

jdawg
12-27-2008, 01:03 AM
what watt does it say near the power plug?

bball09124
12-27-2008, 01:08 AM
what watt does it say near the power plug?

it says 250 watts.

jdawg
12-27-2008, 01:12 AM
cool, just checking, easy way to tell wattage on home equipment, they HAVE TO list the power requirement

bball09124
12-27-2008, 01:14 AM
cool, just checking, easy way to tell wattage on home equipment, they HAVE TO list the power requirement

Cool, I didn't know that. Can anyone else confirm that if I was to hook up a sub that it would split the power rather than drop the impedance down to an unsafe level?

Now that I think about it, I don't even think I have a crossover to run the sub.

jdawg
12-27-2008, 02:45 AM
http://www.parts-express.com/pe/showdetl.cfm?Partnumber=260-221