SDA1 C UPGRADES
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You can order the 10 watt Mills.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
Yep that 10 watt will work just fine. Don't know why Mills dumped the 12 watt version?
Also using a resistor in series with and inductor is not a good idea if an be avoided as the resistor is a fixed DCR where as the inductors DCR varies with frequency.
“The two most important days in your life are the day you are born and the day you find out why.” ~ Mark Twain -
I don't understand that last part. DC doesn't have a frequency...right? And if we're talking AC, wouldn't it be impedance rather than resistance?Also using a resistor in series with and inductor is not a good idea if an be avoided as the resistor is a fixed DCR where as the inductors DCR varies with frequency.
EE is not really my thing. You've probably already figured that out.
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Sonic Craft ran out of the 12 watt American made 2.7 ohm Mills. They still have stock on the 10 watt.
Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
I used the Mexican 12 watt 2.7 they now offer not sure if I like them. I think the American made ones were a little smoother, might replace them.Yamaha RXA1030, Yamaha CD-S2100, Yamaha AS-2200, Bluesound node 2i
Polk SDA2btl highly modded
Polk SDA 1C modded
Polk CS350 LS x2
Kimber 8TC
Sony 55" Bravia
Wish list SVS sub -
Yep that 10 watt will work just fine. Don't know why Mills dumped the 12 watt version?
Also using a resistor in series with and inductor is not a good idea if an be avoided as the resistor is a fixed DCR where as the inductors DCR varies with frequency.
I agree, it's not good practice when used for the Lo-Pass circuit, but Polk used them extensively in the Hi-Pass Shunt for Monitors, RTAs and SDAs, and those engineers forgot what I know about Crossovers.
BTW, any Mills Resistor you order from Parts Express, is the Mexican variety.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
gimpod- thank you for posting a link to the inductor chart- the copy I had was a lot smaller and hard to read all the numbers.Speakers: Polk SDA-SRS xovers rebuilt by David, RDO194's, Dynamat, BH5, glued magnets, new cloth, custom aluminum terminal plates with Cardas posts and Speakon interconnect
Speaker Cables, Jumpers & Interconnect: DIY Douglas Connection
Power Amp: Sunfire Architect's Choice Series II
Preamp: Adcom GFP-750
SACD/CD: Oppo BDP-95
Tuner: Sansui TU-717
TT: Technics SL-MA1
Phono Pre: Emotiva XPS-1
Music Server: Mac Mini w/JRiver - iPad w/JRemote
DAC: Eastern Electric MiniMax Plus
Other Polks: SDA: 1A, 1C, 2B, CRS+ / Monitor: 10A, 5jr, 4 / RT5 -
I'll go with the Mills 10w 2.7.
I need a little clarification on where to order the boards from.
Bill D -
^^^^^^^^westmassguy = Dave
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Hello all. I finally finished the upgrades of my C1s.
I want to thank everyone for their input.
The speakers sound incredible. I was amazed.
Just terrific with well recorded material.
I did the crossovers w/ Mills & Sonicaps. Installed the RDO 194 tweeters
Dynamated the baskets and put blackhole on the rear of the upper chambers.
I noticed when reinstalling the P.R. that the surround attached to the basket was lifting
a little near one of the screw holes.
What type of adhesive is recommended to reattach?
I took an ohm reading at both the speaker terminals after the upgrades without
the interconnect cable and got 4ohms. After about a day of use I read it again with
the interconnect cable connected and it was 3.5 ohms on both.
Any thoughts on the ohm readings? Are these readings typical after the upgrades?
Bill
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What type of adhesive is recommended to reattach?
A rubber cement will do the trick.Any thoughts on the ohm readings? Are these readings typical after the upgrades?
The resistance (what you measured) will not change from what it was with the stock crossovers.
Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
I didn't take an ohm reading before I dissembled the speakers.
I thought they should typically be around 6 ohms . -
You're measuring DC Resistance, not AC Resistance/Impedance, which is how a speaker is rated.I didn't take an ohm reading before I dissembled the speakers.
I thought they should typically be around 6 ohms .
Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
Good. Thanks again for the help. They sound great. I'm having my Adcom gfa 555 upgraded. Will only be using one power amp now. I'm looking to upgrade from my
gfp 565 pre. Any suggestions?
