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post #91 of 197 Old 03-01-2014, 04:16 PM
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Steve do you think the inuke3000 at 4ohm on each channel would push the D2's enough? If so then he could bridge and limit one and if he wanted more go one per channel. Mine at 2 ohm on one channel pushes it with ease. Would think it could.
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post #92 of 197 Old 03-01-2014, 04:17 PM
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Originally Posted by splotten View Post


You mean all the parameters are the same except for Re? If so what is Re? I'm confused :-)

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Re> "This is the DC resistance of the driver measured with an ohm meter and it is often referred to as the 'DCR'. This measurement will almost always be less than the driver's nominal impedance. Consumers sometimes get concerned the Re is less than the published impedance and fear that amplifiers will be overloaded. Due to the fact that the inductance of a speaker rises with a rise in frequency, it is unlikely that the amplifier will often see the DC resistance as its load."

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post #93 of 197 Old 03-01-2014, 04:21 PM - Thread Starter
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Originally Posted by rnconync View Post

But to expensive for me especially once you add shipping
But still considerably more than they were for sale on their site..I think anyway..I would look at another 18" for that price. ..but I would like to go no more than 250 for speaker..preferably under 200
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post #94 of 197 Old 03-01-2014, 04:21 PM
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Originally Posted by redrocks View Post

Steve do you think the inuke3000 at 4ohm on each channel would push the D2's enough? If so then he could bridge and limit one and if he wanted more go one per channel. Mine at 2 ohm on one channel pushes it with ease. Would think it could.

Could you clarify what driver and sealed or vented. Sorry this thread is all over the place and I want to be sure and not go back trying to decipher.

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post #95 of 197 Old 03-01-2014, 04:24 PM - Thread Starter
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Originally Posted by steve nn View Post

Could you clarify what driver and sealed or vented. Sorry this thread is all over the place and I want to be sure and not go back trying to decipher.
Haha..i think he is referring to si 18 d2 in vented 5 cuft martycube box.

Sorry if I am making it hard to follow or difficult to help
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post #96 of 197 Old 03-01-2014, 04:26 PM
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Originally Posted by steve nn View Post

Could you clarify what driver and sealed or vented. Sorry this thread is all over the place and I want to be sure and not go back trying to decipher.

Ha, yes SI18ht d2's. Vented. Edit.
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post #97 of 197 Old 03-01-2014, 04:27 PM
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Thanks Steve. Im not -that- tired ;-)

I'm well aware how to calculate it when I have the numbers, but the coil resistance is missing from SIs site. They only state total Re for the D2 models with coils in series (3.7 ohm). I have no Re for D4. I can assume its 3.7 -per- coil giving me a total Re of either 1.85 ohm or 7.4 ohm. It just doesn't say explicitly. Thats all. Maybe its a non issue if its a little less or a little more, but I havent modeled it yet.
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post #98 of 197 Old 03-01-2014, 04:29 PM
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Originally Posted by rnconync View Post

But still considerably more than they were for sale on their site..I think anyway..I would look at another 18" for that price. ..but I would like to go no more than 250 for speaker..preferably under 200

I live really close to stereo integrity and with sale price after shipping it was about $195. So $50-60 more, and then if you want another you will have to beg some one to sell you another D4. So if Steve thinks it would push 2 D2's I would go that route myself.
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post #99 of 197 Old 03-01-2014, 04:33 PM
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I would have to sim it (but that's been done) but off the top of my head I would go the 3 over the 1 in a heartbeat.

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post #100 of 197 Old 03-01-2014, 04:35 PM
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Maybe its a non issue

Sorry, no I don't think it is.

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post #101 of 197 Old 03-01-2014, 04:40 PM - Thread Starter
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Originally Posted by steve nn View Post

I would have to sim it (but that's been done) but off the top of my head I would go the 3 over the 1 in a heartbeat.
Sorry..Are you referring to the inuke 3000 vs the 1000? I think I would probably get an si 18" d2 if I could run it fine off the 3000 and still possibly add another still using the 3000. How many ohms would I be powering with the si 18 d2 dual 2 ohm speaker? I wouldn't mind trying some Sims myself a little later too but don't know what I need to input for wattages, ohms rms wattage etc.

Can't I wire the speaker either in series for 4 ohms or parallel for 1 ohm..or how does that work?
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post #102 of 197 Old 03-01-2014, 04:44 PM
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Originally Posted by steve nn View Post

I would have to sim it (but that's been done) but off the top of my head I would go the 3 over the 1 in a heartbeat.

Yeah I meant do you think the 3000 can push the si18 d2's enough running at 4ohm on each channel. In case he wanted another in the future.
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post #103 of 197 Old 03-01-2014, 04:44 PM
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Yes the 3000 EDIT> Oh I'm sorry.. the dual 4ohm spec

Specifications: • Output power (stereo): 440 watts x 2 (8 ohms), 880 watts x 2 (4 ohms), 1,500 watts x 2 (2 ohms) • Output power (bridged mono): 1,500 watts x 1 (8 ohms), 3,000 watts x 1 (4 ohms) • Frequency response: 20 Hz to 20 kHz, +0/-1 dB • Damping factor: >160 @ 8 ohms • S/N ratio: >100 dB • Power supply: 120V, 60 Hz • Dimensions: Approx. 3.7" H x 19" W x 9.1" D • Weight: 6.6 lbs.

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post #104 of 197 Old 03-01-2014, 04:50 PM
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Originally Posted by rnconync View Post

Sorry..Are you referring to the inuke 3000 vs the 1000? I think I would probably get an si 18" d2 if I could run it fine off the 3000 and still possibly add another still using the 3000. How many ohms would I be powering with the si 18 d2 dual 2 ohm speaker? I wouldn't mind trying some Sims myself a little later too but don't know what I need to input for wattages, ohms res wattage etc.

One si18 d2 would have you at 4ohms bridged and need limited to not over push with the Inukes dsp. But 4ohm per channel only uses 800 something per channel if you added another later. Which is what I was asking Steve, if he thought that would still push them fine. If not and you really think you would want another later (like I did) then the si15d4's would get the most out of the inuke3000. I couldn't find another 18 that was d4 for a decent price when I was looking.
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post #105 of 197 Old 03-01-2014, 04:52 PM
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There you go. 880x2 at 4ohms. But if you do order the SI18's I would get 2 now. It may not be in stock a day later if you want more. That's what happened to me.
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post #106 of 197 Old 03-01-2014, 05:01 PM - Thread Starter
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There you go. 880x2 at 4ohms. But if you do order the SI18's I would get 2 now. It may not be in stock a day later if you want more. That's what happened to me.
So I could get the SI 18" D2 wire it in series for 4 ohm and run 880w per channel with the 3000dsp? I would be looking to put this into a martycube more than likely...
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post #107 of 197 Old 03-01-2014, 06:13 PM
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Originally Posted by splotten View Post

Thanks Steve. Im not -that- tired ;-)

I'm well aware how to calculate it when I have the numbers, but the coil resistance is missing from SIs site. They only state total Re for the D2 models with coils in series (3.7 ohm). I have no Re for D4. I can assume its 3.7 -per- coil giving me a total Re of either 1.85 ohm or 7.4 ohm. It just doesn't say explicitly. Thats all. Maybe its a non issue if its a little less or a little more, but I havent modeled it yet.

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Originally Posted by steve nn View Post

Sorry, no I don't think it is.

Looks like you are right.

Here is HT15D2 modeled with TS from D2 and only changing Re from 1.85 to 3.7 to 7.4 Ohm. Looks like you get at bigger inductance hump if Re goes down. I'm dont know if this is representative, but if it is it looks like you are better off with the coils in series. Any comments?

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post #108 of 197 Old 03-01-2014, 06:16 PM - Thread Starter
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Originally Posted by splotten View Post



Looks like you are right.

Heres HT 15 modeled with TS from D2 and only changing Re from 1.85 to 3.7 to 7.4 Ohm. Looks like you get at bigger inductance hump if Re goes down. I'm dont know if this is representative, but if it is it looks like you are better off with the coils in series. Any comments?

The si 15 or 18 d2?
The 15 is available in d4 the 18 in d2
what route would you go splotten with the 15 dvc...The 15 si d4 or si 18 d2?
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post #109 of 197 Old 03-01-2014, 06:25 PM
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I know your not asking me but the 15's would get the most out of the inuke for sure. D4=dvc=dual voice coil 4ohm.
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post #110 of 197 Old 03-01-2014, 06:31 PM
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Any comments?

No I don't know enough about it to comment except the room is going to do a hack job to your response. I'm presuming 1st port res looks good with all mod and crossing at 80hz.

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post #111 of 197 Old 03-01-2014, 06:31 PM
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Originally Posted by rnconync View Post

The si 15 or 18 d2?
The 15 is available in d4 the 18 in d2
what route would you go splotten with the 15 dvc...The 15 si d4 or si 18 d2?

I am not really sure. Dual voice coil is new for me and I simply dont know if i am modeling right. I would like some input from some one that knows how to do it right. I suspect Le might be changing as well as Re depending on configuration.. Someone please enlighten me :-)

For you size constraints i would say go with the 15. From the minimal modeling i did with them it looks like a more balanced design.
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post #112 of 197 Old 03-01-2014, 06:32 PM
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Originally Posted by rnconync View Post

So I could get the SI 18" D2 wire it in series for 4 ohm and run 880w per channel with the 3000dsp? I would be looking to put this into a martycube more than likely...

Yes,
the si15 d4 and have 1500w per channel.
The si18 d2 and have 3000w bridged
Or the si18 d2 and have 880 per channel.
"Rated power"
But they are also "rated" for only 600 by stereo integrity. 15 and 18.
So your call really.
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post #113 of 197 Old 03-01-2014, 06:35 PM - Thread Starter
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Originally Posted by redrocks View Post

I know your not asking me but the 15's would get the most out of the inuke for sure. D4=dvc=dual voice coil 4ohm.

So with your experience with the 18"..you would suggest going with the 15"? ....I'm not concerned with ear bleeding levels and all..I just want great sound at non headache inducing levels..I think whether I go 15 or 18 I will be more than happy...but I'm going off people's experience here and trying to to make the mistake of maybe wishing I went 18" later..I would love hit mostly flat to 20 hz..
I am probably getting the inuke 300 dsp based on the overwhelming suggestion to go that route..i'm more than likely going to build a marty cube so now it's just down to a 15" or 18" driver and which one...preferably for around $200 or less for the driver..and that would stretch the budget to just shy of $500
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post #114 of 197 Old 03-01-2014, 06:37 PM
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Originally Posted by splotten View Post


I am not really sure. Dual voice coil is new for me and I simply dont know if i am modeling right. I would like some input from some one that knows how to do it right. I suspect Le might be changing as well as Re depending on configuration.. Someone please enlighten me :-)

For you size constraints i would say go with the 15. From the minimal modeling i did with them it looks like a more balanced design.
I don't know much on modeling but I do know the si15 and 18 is not much of a difference on box size vented. I have a Marty basically just shaved 2in from the side and added to the top for size reasons (and modeled for it). As for modeling the dvc sub the specs your going off of should state if it is for having them in series or not. So those specs are it, don't think you have to change anything. If it's stated. Edit, I see now it's not stated on SI's website. Sorry.
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post #115 of 197 Old 03-01-2014, 06:38 PM
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Originally Posted by steve nn View Post

No I don't know enough about it to comment except the room is going to do a hack job to your response. I'm presuming 1st port res looks good with all mod and crossing at 80hz.

Its not a finished model. It was only to show what happens when you change Re to a lower value.
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post #116 of 197 Old 03-01-2014, 06:43 PM - Thread Starter
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Originally Posted by splotten View Post


I am not really sure. Dual voice coil is new for me and I simply dont know if i am modeling right. I would like some input from some one that knows how to do it right. I suspect Le might be changing as well as Re depending on configuration.. Someone please enlighten me :-)

For you size constraints i would say go with the 15. From the minimal modeling i did with them it looks like a more balanced design.
That is what I was thinking too for the size box and the modeling you guys have done..it seems like I will get the most out of the driver selected with a 5 cuft box and inuke 3000dsp..If the majority rule is 15" for that box size..then I might just go with the dayton 15" dvc setup that you suggested or go to the dayton ho 15" unless someone sees a significant advantage going with th si driver over either of the dayton since the si will be a bit more expensive once shipped.
I really want to go with the best overall choice for my size constraints (martycube or smaller) amp and budget($400 preferred but might stretch to $475 if it is more sensible)..
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post #117 of 197 Old 03-01-2014, 06:45 PM
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Originally Posted by rnconync View Post

So with your experience with the 18"..you would suggest going with the 15"? ....I'm not concerned with ear bleeding levels and all..I just want great sound at non headache inducing levels..I think whether I go 15 or 18 I will be more than happy...but I'm going off people's experience here and trying to to make the mistake of maybe wishing I went 18" later..I would love hit mostly flat to 20 hz..
I am probably getting the inuke 300 dsp based on the overwhelming suggestion to go that route..i'm more than likely going to build a marty cube so now it's just down to a 15" or 18" driver and which one...preferably for around $200 or less for the driver..and that would stretch the budget to just shy of $500

My opinion is 18 all day long. Stereo integritys no matter which size you choose. If you have room for a Marty then you might as well go 18. I would only say si15's if your going for the best possible wattage match/headroom/loudness.
But if your not even sure you want 2 subs then the one si18 being way over pushed may be enough for you. I don't know your habits but I assure you one is more than enough to induce a headache. Ha.
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post #118 of 197 Old 03-01-2014, 06:48 PM
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For you size constraints i would say go with the 15. From the minimal modeling i did with them it looks like a more balanced design.

That's my take also and thus stated so, except I like D2 better for wiring options. I suspect a few others do also since it's sold out and what I notice most prevalent. I'm not saying that would be a deal breaker though. I always like the idea of the least dsp myself and the 15 would put you there.
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Its not a finished model. It was only to show what happens when you change Re to a lower value.

I understand. EDIT> Many good points are being made here.

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post #119 of 197 Old 03-01-2014, 06:57 PM
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Originally Posted by rnconync View Post

That is what I was thinking too for the size box and the modeling you guys have done..it seems like I will get the most out of the driver selected with a 5 cuft box and inuke 3000dsp..If the majority rule is 15" for that box size..then I might just go with the dayton 15" dvc setup that you suggested or go to the dayton ho 15" unless someone sees a significant advantage going with th si driver over either of the dayton since the si will be a bit more expensive once shipped.
I really want to go with the best overall choice for my size constraints (martycube or smaller) amp and budget($400 preferred but might stretch to $475 if it is more sensible)..

Trust me a goof 15" is going to do you good and like that size enclosure better. If you go with another D2 15 all the better imo. You don't hear anyone complaining over in ID about their 15" *&$%^% sub do you? (some 12"s are better than some 15"s) You can always add another just in case you need it in a larger room using the same 3000 amp.

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post #120 of 197 Old 03-01-2014, 06:59 PM - Thread Starter
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That's my take also and thus stated so, except I like D2 better for wiring options. I suspect a few others do also since it's sold out and what I notice most prevalent. I'm not saying that would be a deal breaker though. I always like the idea of the least dsp myself and the 15 would put you there.
I understand. EDIT> Many good points are being made here.
Why does it seem dvc 2 omh is preffered with 15" and dvc 4 ohm with 18"?
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