Tri-amped CSI A6
gp4jesus
Posts: 1,987
Finished & reassembled as of 4p today, Jan 2nd, 2017!
Blends better now w/ Tri-amped LR*. Sibilance is a memory!
* http://forum.polkaudio.com/discussion/174880/tri-amped-rti-a7
Build notes:
1. A nod to Jesse (F1nut) - mids held in by hurricane nuts & the requisite machine screws
2. Same DC blocking cap on tweeter - ClarityCap PX 68uf
3. Canare 14 soldered to tweeter
4. BJC 10 gauge soldered to mids
5. Same binding post upgrades
Only one pic...
Blends better now w/ Tri-amped LR*. Sibilance is a memory!
* http://forum.polkaudio.com/discussion/174880/tri-amped-rti-a7
Build notes:
1. A nod to Jesse (F1nut) - mids held in by hurricane nuts & the requisite machine screws
2. Same DC blocking cap on tweeter - ClarityCap PX 68uf
3. Canare 14 soldered to tweeter
4. BJC 10 gauge soldered to mids
5. Same binding post upgrades
Only one pic...
Samsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work
Post edited by gp4jesus on
Comments
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Omitted Build Notes:
6. five coats of Flex Seal* applied to interior - something different & untried
7. Armaflex on mid magnets, frames, & closure walls - as w/the other speakers
8. mineral wool gently tucked in between Power Port tubes & closure walls
* does, by its self, help to reduce closure ringingSamsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work -
Crazy.
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One person's reality may be another's "Holy...!"Samsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work
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Tony goes for broke! Keep us posted on further results when everythings cooks for a couple hunert hours. Interesting project.
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Update. Everything XO'd @ ~2K, 4th order. I expect some heat for this.
Did a bunch of listening w/the XOs set as closely to Polk's specs as possible. Then I reset them to the above. Seemed cleaner, w/ the same FR. Makes sense given that those mids will beam above 2.3K.
Polk specs their filtering, all 2nd order, as follows:
tweeter: 2.2kHz
mids @ 1.5kHz & 3.8kHz, -6dB
Side note 1: triamping my center increases available power to 100 watts per driver. Added a real 100+ watts across my front.
Side note 2: discovered my pre/pro allows English or metric distance settings - increments either 6" or .1 meter = ~4".
Enjoy.Post edited by gp4jesus onSamsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work -
Watching "Days of Thunder" on Blu-Ray @ -11... ...priceless!Samsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work
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What happened to the built in crossover?
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Samsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work
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Long story short: the next (rare) chance I get the house to my self I’m swapping in a 981 for the 985. I give up some power but I’ll PU some fidelity.
The Rotel community considers the 981, a near-baby 991, that series flagship. Whereas some consider the 985, essentially a 5 X 100 watt version of the 980*. Unfortunately “shoehorning” that much technology into a chassis only slightly taller than a 980/1 demands some compromises.
*the 981’s predecessor.
Until then... TonySamsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work -
“...then...” arrived today!
Swap out the 985 for a 981. Cleaner, softer treble.
Side note: about a month ago, the tweeter’s lower frequency range “quit.” Sounded REALLY thin. Swapped it for one of my un-used RTi A1 tweeters. Slightly different bezel but otherwise a drop-in - same tweeter.
I have my eye on this...
https://www.parts-express.com/Peerless-OC25SC65-04-1-Textile-Dome-Tweeter-264-1018
... as an inexpensive replacement. Polk wants $65 - too much for that tweeter. Removing the old one from the bezel took some effort - held in by a rubbery glue. Could be an inexpensive upgrade for any RTi/RTi A series speakers.
Until next time..Samsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work -
“...then...” arrived today!
Swap out the 985 for a 981. Cleaner, softer treble.
Side note: about a month ago, the tweeter’s lower frequency range “quit.” Sounded REALLY thin. Swapped it for one of my un-used RTi A1 tweeters. Slightly different bezel but otherwise a drop-in - same tweeter.
I have my eye on this...
https://www.parts-express.com/Peerless-OC25SC65-04-1-Textile-Dome-Tweeter-264-1018
... as an inexpensive replacement. Polk wants $65 - too much for that tweeter. Removing the old one from the bezel took some effort - held in by a rubbery glue. Could be an inexpensive upgrade for any RTi/RTi A series speakers.
Until next time..
Less than 8 bucks! If it works, that's a heck of a deal. -
We’ll see.
I compared the dimensions of the two tweeters and, also, mine w/the pictures of the Peerless. They are remarkably similar, if not the same. So much so, coloring aside, the only obvious difference is a heat sink screwed and glued to the back! So it should fit w/little issue. We’ll see...
Kinda makes me wonder if Peerless made the original for Polk. Polk has used several different model Peerless tweeters in many of their products over the years. We’ll see...
A few folks on the forum know one has several choices if they’re displeased w/their RTi/RTi A series speakers’ infamous upper frequency response or SQ:
a. upgrade the XO components w/particular attention to tweeter filtering
b. like me, go electronic and, as appropriate, either bi or tri-amp them*
c. Buy something else
d. Live w/them though some really their sound as is.
*https://forum.polkaudio.com/discussion/174880/tri-amped-rti-a7#latest
In closing when they get here, I’ll use a pair of RTi A3s* as a test, swapping a Peerless into one and do a bunch of listening. Then I’ll upgrade my system starting w/the ‘A6. What will make doing 5 channels easier for me is a pair of idle RTi A3s* and have a couple of blown tweeters’ bezals w/which to install the Peerless. This will reduce any channels’ speaker’s down time to a few minutes.
*in reserve to, one day, expand to 7 channels
We’ll see... TonySamsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work -
In my March 30th post I neglected to make it clear my ‘A6 is now bi amped.
Yeah the mid/woofers share a channel. I’m OK w/that though as they are two 4 ohm drivers in series - easier load, cooler running amp, plenty of available power.Samsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work -
The “mounted*” CSi A6 diffraction pad** from Trey.
*prior to Velcro, I relied upon the grill to hold it in place.
No SQ eval comments with & w/out grill as I haven’t watched any movies since applying Velcro. For that matter I haven’t done any with & w/out DP** listening as I’m overwhelmed w/the “honey doo” listSamsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work -
Well, get that list done and get back to work
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 appreciate your boot to my backside!Well, get that list done and get back to work
My 13 year old son is game CRAZY using my system!Samsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work -
A few pics of this thread’s focal point’s mid ranges…
Obviously, very close to how it came save for the Armacell on its exterior, mostly to dampen magnet shield ringing.
The next few display Xschop’s* machining savvy and patience to Plug them. In addition, I finished the invisible to the eye but “visible the ear” - Garden Stater Cone side “Foam” treatment providing near-complete coverage of their basket’s shiny reflective surfaces
*he is presently moving
…and finally…
Tomorrow, I plan to give my LCR a long overdue tweakSamsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work -
6. five coats of Flex Seal* applied to interior - something different & untried
Awesome. Just read your previous post...
I did 4 coats Black Flex Seal to the last set of B&O drivers that I did. Saved alot of time and had about same heft as butyl mat, plus every part of the steel frame was covered.
Don't take experimental gene therapies from known eugenicists. -
*That’s equally different. I had not considered school of thought. Perhaps using the Flex Seal as glue for the Armaflex would provide a 1-2 to dampen ringing AND reduce reflection.6. five coats of Flex Seal applied to the closure interior - something different & untried
Awesome. Just read your previous post...
I did 4 coats Black Flex Seal to the last set of B&O drivers* that I did. Saved alot of time and had about same heft as butyl mat, plus every part of the steel frame was covered.
As I mentioned elsewhere, my Behringer RTA died since the last time I used it😢😢. TrueAudio to the rescueSamsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work -
Hopefully you'll get to hear them before F1 magically does and lol's your experience...lolDon't take experimental gene therapies from known eugenicists.
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While I might not agree with everything Tony does I do respect how he presents what he does. That is, he doesn't jump on every new guy and try to shove it down their throat like 2 others here do.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 -
You mean like the derogatory amp "suggestions" that someone usually spouts off?
Don't take experimental gene therapies from known eugenicists. -
You mean like the derogatory amp "suggestions" that someone usually spouts off?
I'm sure I'm not the only that has no idea what heck you're going on about. In fact, I'm not sure you do either...lolPolitical 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 -
C’mon guys, play niceSamsung 60" UN60ES6100 LED Outlaw Audio 976 Pre/Pro Samsung BDP, Amazon Firestick, Phillips CD Changer Canare 14 ga - LCR tweeters inside*; Ctr Ch outside BJC 10 ga - LCR mids, inside* & out 8 ga Powerline: LR woofers, inside* & out *soldered LR: Tri-amped RTi A7 w/Rotels. Woofers - 980BX; Tweets & “Plugged*” Mids - 981, connected w/MP Premiere ICs Ctr Ch: Rotel RB981 -> Bi-amped CSi A6 Surrounds: Premiere ICs ->Rotel 981 -> AR 12 ga -> RTi A3. 5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”. Power Conditioning & Distribution: 4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s *Xschop's handy work
