New Speakers - Polk DB6501?

Aescen · 08-24-2014, 10:38 PM

Quote:

Originally Posted by RedShifter

Thanks for all the replies!

I actually do have the RCA's going to the sub out jacks. Where am I suppose to put them? What if I want to add a sub in the future?

I have a kenwood kac729s amp if that helps.

do you have front audio out jacks or is it just two rca sub outs on your radio? if that's the case you're not completely doomed, you just need a LOC to get RCA outs from the regular white-white/black and gray-gray/black front speaker wires coming from your HU.

RedShifter · 08-25-2014, 09:03 AM

I have a Kendwood DNX8120 head unit. There are no front audio jacks. But there is a plethora of outputs behind the unit. Are they no other alternatives other than getting a line out converter as you suggested?

Here is a stock photo of one of the preouts

image.jpg

JARblue · 08-25-2014, 09:09 AM

Quote:

Originally Posted by RedShifter

There are no front audio jacks.

When he says front, he means the set of RCAs labeled "Front" in the photo you attached. Front is not referring to their location on the head unit - the connection is going to be in the back.

RedShifter · 08-25-2014, 09:32 AM

JARblue thanks for the clarification. So I suppose I can just take them out of the sub out and put them in the "front" then I should be good to go? No need for line out converter correct?

370z_Roadster · 08-25-2014, 09:42 AM

Quote:

Originally Posted by RedShifter

JARblue thanks for the clarification. So I suppose I can just take them out of the sub out and put them in the "front" then I should be good to go? No need for line out converter correct?

Yes, depending on how you have the internal crossover set-up, the front pre-outs should be full range. This should solve your issue.

JARblue · 08-25-2014, 09:42 AM

Quote:

Originally Posted by RedShifter

JARblue thanks for the clarification. So I suppose I can just take them out of the sub out and put them in the "front" then I should be good to go? No need for line out converter correct?

Bingo

Assuming everything else is set up properly, as mentioned.

RedShifter · 08-25-2014, 10:00 AM

Thanks guys! You have been extremely helpful.

But I have to ask...what if I want to hook up a sub. How would I go about doing that since there is only one "line in" on the Kenwood amp. Seeing how that is already going to be occupied by the "front" output from behind the head unit for the component speakers.

JARblue · 08-25-2014, 11:37 AM

I'm no expert here, but I'm not sure you can with that amp. I think you'll need an additional amp or you can upgrade the one you have.

370z_Roadster · 08-25-2014, 12:05 PM

If you are married to that amp, see if it can operate in Tri-mode. Have not seen this application in many years(all x-over's are active nowadays). If you can replace the amp, go for a 4 channel and bridge channel 3 & 4 for the sub. This is the method I used with the MTX 704x I just installed.

Edit: Looks like the KAC 729s is Tri-Way capable. Now you need a Tri-way Crossover. Might be a tough find.

RedShifter · 08-25-2014, 01:23 PM

I'm not married to it lol it's just what I've had.

Can you recommend an amp that would fit my needs so I know what options to look for so I can upgrade it?

RonRizz · 08-25-2014, 06:03 PM

On a side note, make sure you swap the RCA cables when the unit is turned OFF......
As 370z_roadster mentioned above, a tri-way crossover may not be easy to locate. You are better off getting a dedicated sub amp, or a 4 channel that is capable of bridging 2 channels (most are nowadays)

Aescen · 08-25-2014, 07:46 PM

Quote:

Originally Posted by RedShifter

I'm not married to it lol it's just what I've had.

Can you recommend an amp that would fit my needs so I know what options to look for so I can upgrade it?

You'll need a solid four or 5 channel amp. I'm running an Alpine pdx-v9.

RedShifter · 08-25-2014, 08:02 PM

Okay so I think I will just run two amps. I will keep the Kenwood kac729s I currently have and save that for when I get the sub.

So I need to find a two channel amp that can power the component speakers.

The Alpine looks nice but that is more than I would like to spend.

JMow · 08-25-2014, 09:49 PM

I cut up the stock speakers to make a metal basket for my tweeters. I was thinking of cardboard but thought it would be too flimsy- glad to know it would have worked though. I don't know why it's hard to cut into those stock speakers, but they did fit the DB6501 tweeters perfectly and the stock covers fit right over top. How did you end up mounting your tweeters? By the way after you get the DB6501 setup, your going to need more bass. I have a great subwoofer setup to show when I get the chance to take a pic. You use the spare tire/wheel itself as the enclosure- no fiberglassing required. Just seal the bottom with foam weatherstripping where the wheel makes contact. the rubber tire will seal the top (peace of thick plywood). Cut a hole for the woofer. Crank it down with nylon straps/ratcheting mechanisms. I threw the carpet right on top. The ratchet mechanisms propped it up so it wouldn't touch the speaker.

brancky3 · 08-25-2014, 10:29 PM

Quote:

Originally Posted by JMow

I cut up the stock speakers to make a metal basket for my tweeters. I was thinking of cardboard but thought it would be too flimsy- glad to know it would have worked though. I don't know why it's hard to cut into those stock speakers, but they did fit the DB6501 tweeters perfectly and the stock covers fit right over top. How did you end up mounting your tweeters? By the way after you get the DB6501 setup, your going to need more bass. I have a great subwoofer setup to show when I get the chance to take a pic. You use the spare tire/wheel itself as the enclosure- no fiberglassing required. Just seal the bottom with foam weatherstripping where the wheel makes contact. the rubber tire will seal the top (peace of thick plywood). Cut a hole for the woofer. Crank it down with nylon straps/ratcheting mechanisms. I threw the carpet right on top. The ratchet mechanisms propped it up so it wouldn't touch the speaker.

The cardboard tweeter mounts are flimsy, but they're just tweeters and don't move

Also, pics of your sub setup?

08-25-2014, 11:37 AM	#23 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	I'm no expert here, but I'm not sure you can with that amp. I think you'll need an additional amp or you can upgrade the one you have. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

08-25-2014, 12:05 PM	#24 (permalink)
370z_Roadster Base Member Join Date: Jul 2014 Location: Port Saint Lucie, FL Posts: 66 Drives: 11 370z Roadster 7AT Rep Power: 11	If you are married to that amp, see if it can operate in Tri-mode. Have not seen this application in many years(all x-over's are active nowadays). If you can replace the amp, go for a 4 channel and bridge channel 3 & 4 for the sub. This is the method I used with the MTX 704x I just installed. Edit: Looks like the KAC 729s is Tri-Way capable. Now you need a Tri-way Crossover. Might be a tough find. Last edited by 370z_Roadster; 08-25-2014 at 12:21 PM.

08-25-2014, 06:03 PM	#26 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,136 Drives: 2 feet, 3 pedals Rep Power: 6775	On a side note, make sure you swap the RCA cables when the unit is turned OFF...... As 370z_roadster mentioned above, a tri-way crossover may not be easy to locate. You are better off getting a dedicated sub amp, or a 4 channel that is capable of bridging 2 channels (most are nowadays) __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals Last edited by RonRizz; 08-25-2014 at 06:05 PM.

08-25-2014, 09:49 PM	#29 (permalink)
JMow Base Member Join Date: Jul 2014 Location: Washington, DC Posts: 4 Drives: 2014 370Z Base MT Rep Power: 11	I cut up the stock speakers to make a metal basket for my tweeters. I was thinking of cardboard but thought it would be too flimsy- glad to know it would have worked though. I don't know why it's hard to cut into those stock speakers, but they did fit the DB6501 tweeters perfectly and the stock covers fit right over top. How did you end up mounting your tweeters? By the way after you get the DB6501 setup, your going to need more bass. I have a great subwoofer setup to show when I get the chance to take a pic. You use the spare tire/wheel itself as the enclosure- no fiberglassing required. Just seal the bottom with foam weatherstripping where the wheel makes contact. the rubber tire will seal the top (peace of thick plywood). Cut a hole for the woofer. Crank it down with nylon straps/ratcheting mechanisms. I threw the carpet right on top. The ratchet mechanisms propped it up so it wouldn't touch the speaker. Last edited by JMow; 08-25-2014 at 09:56 PM.

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08-25-2014, 09:03 AM	#17 (permalink)
RedShifter Base Member Join Date: Jul 2014 Location: United States Posts: 32 Drives: 2014 Rep Power: 11	I have a Kendwood DNX8120 head unit. There are no front audio jacks. But there is a plethora of outputs behind the unit. Are they no other alternatives other than getting a line out converter as you suggested? Here is a stock photo of one of the preouts image.jpg

08-25-2014, 09:32 AM	#19 (permalink)
RedShifter Base Member Join Date: Jul 2014 Location: United States Posts: 32 Drives: 2014 Rep Power: 11	JARblue thanks for the clarification. So I suppose I can just take them out of the sub out and put them in the "front" then I should be good to go? No need for line out converter correct?

08-25-2014, 10:00 AM	#22 (permalink)
RedShifter Base Member Join Date: Jul 2014 Location: United States Posts: 32 Drives: 2014 Rep Power: 11	Thanks guys! You have been extremely helpful. But I have to ask...what if I want to hook up a sub. How would I go about doing that since there is only one "line in" on the Kenwood amp. Seeing how that is already going to be occupied by the "front" output from behind the head unit for the component speakers.

08-25-2014, 01:23 PM	#25 (permalink)
RedShifter Base Member Join Date: Jul 2014 Location: United States Posts: 32 Drives: 2014 Rep Power: 11	I'm not married to it lol it's just what I've had. Can you recommend an amp that would fit my needs so I know what options to look for so I can upgrade it?

08-25-2014, 08:02 PM	#28 (permalink)
RedShifter Base Member Join Date: Jul 2014 Location: United States Posts: 32 Drives: 2014 Rep Power: 11	Okay so I think I will just run two amps. I will keep the Kenwood kac729s I currently have and save that for when I get the sub. So I need to find a two channel amp that can power the component speakers. The Alpine looks nice but that is more than I would like to spend.