SRT System
Comments
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Thanks for the offer ... I'm sure I'll have a question or 47 along the way ... The subs in the set I'm getting are kind of unique in that the drivers have been upgraded and the internal amps have been bypassed to professionally installed 5-way binding posts. This should allow for much better external amplifiers to be utilized.
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Awesome, the only upgrades I have heard of in the past was a cinepro one, is that one of theirs or custom job?, either way mmmmm.........
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I have looked at my cross over setting and somewhat redfaced, the dial is at the lower position (about 7 oclock) 40hz, at 12 oclock 70hz and only dots at intervals inbetween and at closer examanation my cross over is set at 63 hz, how clever you are to know that hahaha, maybe I should look at my other settings, if my memory was that far out on that one who knows about the rest of what I have said, it really has been a long time since I have thought about this stuff.
Anyway I finally managed to get the pics up, sorry about the quality, the finished product is actually a bit darker than it appears in the photo and the metallic really is nice in certain lighting.
Hope you like.
Brody:rolleyes: -
Clever ?! ... Or maybe just a lucky guess ... In any case it would only seem natural that one would set the x/o where it matched up with the satellites rolloff so that one got neither too little nor too much upper bass.
Yes the mods to the subs were done by CinePro and initially at least I'll have a CinePro amp to drive them. I've heard lots of good things about their amps and the specs are great but I've never heard the output. It'll be interesting to be able to do a side by side with others.
Great Pix ! ... I'd really like to hear more about the process as I was already thinking about a variety of ways to redo the skins.
How do you have yours wired ? Are you going through the control center for both the SDA and Stereo arrays ? or are you splitting the channels out of the preamp/receiver and then amping them individually with a direct connection from the amp to the stereo arrays and through the control center for the SDA arrays. -
You have certainly done your homework, I have wired them as you said, the stereo array goes straight from the amp to that array, the SDA array is the pre out of the amp (left and right) to a separate 2 channel amp then to the SDA unit and then on to the speaker. I also run the center channel straight from the amp to the speakers.
The process for refinishing was to fill any imperfections with auto bog, use a high build undercoat (3 coats) to really fill the grain, dye coat it (the black on the photo) so that when sanding highlights any imperfections, then top coat with the paint chosen. the stripping of components wasn't hard. its just a matter of remembering where the cables go back to, the hardest thing was running the cables through the satalite as there isn't a huge gap at the back, more annoying really.
The cinepro amp too, holy crap, which one, I have not heard the cinepro on SRTs but the reveiws are great and you can't argue with the power rating.
Brody:eek: -
The CinePro is the baby 1K2 which is rated at 350 wpc @ 8 ohms but benched at ~500 wpc @ 8 ohms and is 40-50% more @ 4 ohms which is what the 10"ers are after being wired in series. It's hardly the most attractive amp on the planet but function before fashion. http://www.vision2100.com/cinepro/1k2.html
The Sunfire GC II Sigs are 425 @ 8 and 850 @ 4 ...
I'm actually hoping I DON'T like the CinePro better than the Sunfire's as then I'll be tempted to go with them all around as I know where some 3k6 Mk III's can be found which are total beasts when bridged.
Do you have the satellites defined as small or large to your receiver/preamp ? Are you running receiver/preamp subwoofer output(s) to the subs ? I've actually heard reports somewhere that better results are obtained using L & R. Not necessarily because of channel separation or the potential for localization but simply because there could be a 3-6 dB difference. I'm curious about your thoughts on this. -
satalites defined as large.
I have a splitter out of the sub out of amp then two cables to the sub left and right inputs of SDA controller, and then on to the subs, only other way I have tried it is without the SDA controller - wouldn't advise that, sounded crappy. In regards to the 3 - 6 db difference you mentioned, there is a knob on the SDA unit allowing + 10db, or - 10 db or nuetral as well as the master volume (sub) which has another + or - 10 db, believe me when I say I doubt very much whether anyone could handle + 10db let alone + 20db, I personally have about + 2 db and find that is enough for movies, when running music I have the music master volume (separate knob) at - 10db which is activated by hitting a button on the remote, I will be interested to hear how you get on with your 'playing' around in regards to set up ect. So I guess I haven't heard of any other ways, and in NZ there is on;y 4 pairs of SRTs so very little feedback/discution at all, I think I will a lot from you as you will no doubt try varied idea's, I had a bit of a play when I first got them but back then was quite the amatuer and there was no 'professionals' to help so most of it was guess work til I found the right mix, and that has mostly being forgotton since then, even our conversation so far has been quite a memory jolter.
Brody -
Regarding not using the controller for the subs, that would seem most likely as that is of course where all the controls are. Among other things I like the fact that most of the sub controls are duplicated on the remote as it's a royal pain in the butt to be running back and forth between the sub(s) and listening position when adjusting etc.
Do you have any doc on the SRT SDA Surrounds ? All I have is something I picked up from a for sale add and Polk states they don't have any doc any more which I find curious given that they still sell them packaged with an additional controller. If you do can you either post it here or let me know and I'll PM you my email address.
BTW ... You're about 18 hours ahead of the US East coast aren't you ? I have another friend but not audio related who is from NZ so it's of course somewhat hit and miss sending emails to and from there. -
My cousin has the SDA surrounds and lives about 3hrs drive from me, I will ask him if he has any info for you.
Yes about that in time difference.
Know what you mean about up and down with adjustments, however the SDA remote wont change variable phase ect, so you will still be doing a bit getting rid of those dead spots.
Brody -
Well don't go driving 3 hours for it. Hopefully it's either already in electronic form or if not it could be scanned and emailed. Regarding variable phase I agree, but unlike some of the other controls those are adjustments that one would typically do early on and then leave set that way forever aren't they ?
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I will ring him over the weekend and see. Yes those adjustments are done early and left, for me though so was the bass, I have my movie mode and my music mode so the only thing I do is change between the two, occasionally I might crank the bass up when doing a demo ect but in all honesty I haven't touched the remote in at least 6 months, if I'm watching a movie I will flick the switch while putting the DVD in, I don't like having remotes all over the place and too lazy to program the LCD one for the amp, like I said I don't use it at all really. I guess the playing around phase wears of after a while and I have it sounding just perfect to me. Good luck and enjoy the fiddling, one quick point, when you do your test tones for volume level, when the left speaker (both SDA and stereo array) is making tone the right speakers SDA array should also make noise and vise versa, this is a quick way to chack your cabling is right.
Brody -
Regarding right SDA with left speaker ... I understand. Hopefully I won't be fiddling for ever as I'd rather watch and/or listen than fiddle.
I know you said you are splitting the L & R channel and amplifying them separtely, but do you know if for example you run one input each to the control center for the L & R channels and then run the SDA & Stereo outs from there to the L & R satellites what the effect is on watts going to each half (SDA & Stereo) of the speaker ? I would assume it's cut in half but I don't think I read that any where. -
from denon amp,
left speaker out (amplified) to left stereo array
right speaker out (amplified) to right stereo array
left pre out (not amplified ) to seperate 2 channel amp then amplified signal to left SDA array
right pre out (not amplified ) to seperate 2 channel amp then amplified signal to right SDA array
So only the SDA arrays are controlled by the SRT control unit and as they have there own amplifier - no worries
and the stereo arrays are not run through the SRT controller.
I hope this makes sense and answers your querry, if not break it down a bit more and we can try again as I'm not sure where your coming from in regards to the cutting in half of the watts, I think you may have misunderstood an earlier message regarding set up.
Brody -
That's not the question I was asking ... I know how your hookup is set from what I asked and you answered earlier ...
Another option is to feed the control center an amplified channel and have it split that into feed for the SDA & Stereo arrays separately and directly. The question I was asking is if one does that does it then basically cut the WPC by 2 for each channel in order to drive the SDA & Stereo arrays. That's what I assumed would happen but I wasn't positive. I DO know that in this configuration that each channel is then seen as a 4 ohm load instead of an 8 ohm load.
See the different wiring diagrams I posted here for the difference. It's the first configuration that I'm referring to, not the second one the more closely approximates your setup.
http://clubpolk.polkaudio.com/forum/showthread.php?s=&threadid=16649&highlight=srt+wiring -
I think I know where you are coming from now, I would also make the same assumption. The ohm would halve to 4 and the amp would be working a bit harder, it wont make much (if any) difference to volume but quality of sound will be affected. Liken it to a bi amped tweeter and mid range but due to the no of drivers more noticable, for the price of a 2nd hand 2 channel amp I would reccomend bi amping. It doesnt need to be a great one as it is only the SDA array which contributes to the soundstaging and not so much the quality of sound which is more the stereo array.
Brody -
This isn't a problem for me as the dual Sunfire GC II sigs provide 10 channels @ 425 wpc, I was just curious about what the liklihood of configuring the system this way would do. Now if they'd only GET HERE.
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Originally posted by brody05
My cousin has the SDA surrounds and lives about 3hrs drive from me, I will ask him if he has any info for you.
Yes about that in time difference.
Know what you mean about up and down with adjustments, however the SDA remote wont change variable phase ect, so you will still be doing a bit getting rid of those dead spots.
BrodyOriginally posted by brody05
I will ring him over the weekend and see.
Brody
Did you happen to be in touch with your cousin this weekend ?
I was hoping my new toys would arrive Friday so I could play with them over the weekend. They didn't, tomorrow's the day. -
I have, he has the manual for the SRT system the same as mine and I pressume the same as what you got the diagrams from that you posted, sorry not better news.
Have fun with the set up and your amp sounds great, it is not one I am familiar with over here, we miss out on a lot of brands.
Brody -
They made it ... and in great shape ( PHEW !!! ) ... Now for the daunting task of moving 500 lbs of speaks and other toys from the garage in and getting them set up ... will attempt to get some pix tomorrow in between but I'm toast for today.
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Congrats PW!
You going to have to change your name now, maybe GotemPolks.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 -
Congrats PW, happy listening
CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint. -
The "soldiers" stand in almost uncanny silence waiting to be assigned to new duty.
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Sweet... keep the pics coming...More later,
Tour...
Vox Copuli
Better to remain silent and be thought a fool, than to open your mouth and remove all doubt. - Old English Proverb
"Death doesn't come with a Uhaul." - Dennis Gardner
"It's easy to get lost in price vs performance vs ego vs illusion." - doro
"There is a certain entertainment value in ripping the occaisonal (sic) buttmunch..." - TroyD -
awesome dude.... I can't wait to read your excitement once setup, welcome to the SRT club, good luck and enjoy.
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Or maybe to ... PolkDeafski ...Originally posted by F1nut
You're going to have to change your name now, maybe GotemPolks. -
Brody,
Well I'm getting there ... Haven't got the subs running yet as I got side tracked listening to a couple of CD's with just the sats ... UNBELIEVABLE ... I thought the newer RTi12's were nice and they are, but they're nothing like this.
Back to "work" ... LOL ...
