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RFX 8240/8250 head units

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=57066
Printed Date: March 28, 2024 at 9:08 PM


Topic: RFX 8240/8250 head units

Posted By: Chad7n7
Subject: RFX 8240/8250 head units
Date Posted: June 04, 2005 at 10:48 PM

I have a couple questions for anyone who has had these unit.

On the 8240, does this one have dual 20-bit DAC, as the 8250 does??

Also, does anyone have any of these units still in stock?? I know its a long shot, but just for grins and giggles, I am interested in getting my hands on one of these units, preferrably the 8250 model. ( If the 8240 has 20-bit DAC, then either will do). We want to do a side by side comparison with a Nakamichi CD700II. Though in logic, CD700II should be superior, we want to see by how much. Depending on the results, I actually would like to use one of these in my personnal vehicle.

Thanks for any responses or help, much appreciated.



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Replies:

Posted By: Chad7n7
Date Posted: June 05, 2005 at 7:17 PM
Sorry.....I didn't clarify. I am referring to the Rockford Fosgate units built by Denon.

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Posted By: dwarren
Date Posted: June 05, 2005 at 8:00 PM
A local shop near me has a couple of the Fosgate h.u.'s hanging out on the discount shelf. I will ask them the model, specs, and prices. I got a funny feeling the Fosgates won't stack up to the cd700, but anything is possible.

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Posted By: skoldspuppy
Date Posted: June 05, 2005 at 8:43 PM

Chad7n7 wrote:

Sorry.....I didn't clarify. I am referring to the Rockford Fosgate units built by Denon.

Wow thats weird I have a 9210 in my closet and after taking it apart it says made by hyundai electronics

--Skold



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Posted By: Chad7n7
Date Posted: June 05, 2005 at 8:57 PM

Well, I really don't think it will either, but its all in fun and games, haven't had a chance to play with one, and now its kind of late, but I would really like to get my hands on one, as we aren't a Fosgate dealer and never really had access to one.

We were a Nakamichi dealer, and have a couple CD700II's for personal use. Just out of curiosity, the conversation came up the other day, as I am installing a new HU in my personal truck, we started comparing specs, and surprisingly enough, the Fosgate units aren't lagging too far behind (on paper).

We used to be a Denon dealer, a couple years back, and know the quality of their units, which brought the comparison. A closer, and better comparison would be to get a DCT-Z1, but thats next to impossible, so I am resorting to the next best thing, the Rockford Fosgate RFX 8240/8250. (Built by Denon)

I am only interested in the RFX 8240/8250. If that shop has them, can you "PM" with some prices?? Also, if they have them, can you find out about the 8240,if possible ( Looking to see if it also has the dual 20-bit DAC's as the 8250 does) I think it does, I think the only difference was the outputs 8240- 2V @ 100 ohms vs 8250- 5V @ 50 ohms, but both units have  8V balanced outputs. Also the 8250 had an aux input, which the 8240 doesn't.

Thanks for the reply.



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Posted By: cdjr
Date Posted: June 05, 2005 at 11:44 PM
This FAQ that was posted when the "Denfords" became available from CarDomain may be helpful.

https://www.carsound.com/cgi-bin/UBB_CGI/ultimatebb.cgi?ubb=get_topic;f=18;t=005725;p=0

It seems that the only difference is that the 8240 does not have an Aux Input.





Posted By: Chad7n7
Date Posted: June 06, 2005 at 12:01 AM
I found that thread while trying to do research on these units. Thanks for the reply though, the effort is appreciated.

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Posted By: cdjr
Date Posted: June 06, 2005 at 12:22 AM
Thanks!

I'm interested in seeing the results of you comparison since I have an 8250ti waiting to be installed this summer.

If you haven't already seen this, there is a high end HU "shoot-out" on this UK forum:

https://www.nearfieldaudio.co.uk/forum/viewtopic.php?t=125

And an upcoming "shoot-out":

https://www.nearfieldaudio.co.uk/forum/viewtopic.php?t=210

They were supposed to have the 8250 in the first "shoot-out" but ran out of time to include it.




Posted By: Chad7n7
Date Posted: June 06, 2005 at 12:41 AM

Cool, well, I have to get my hands on one first, and as far as it looks, its not going too well, I have been searching all over, and all I can come up with is a 8240, thus the questioning of the D/A converters. If they do in fact have the same dual 20-bit, then I am not concerned with the aux. in, or the 5V preouts vs. the 2V of the 8240, due to the fact, I will be using the 8V balanced outs, in the form of Zapco symbalink cables, according to the pin outs, these will work great. This is my concern, I will be using those to help the handicap of the Denon/Rockford Fosgate unit because of the 20-bit D/A, vs. the Nakamichi CD700II, which has 24-bit D/A. We are trying to use the best features of both units to see what may be superior.

I really like the fact of the balanced outs, I have a Zapco preamp, so I can do away with RCA connections all together and be totally balanced....wow. 

Now.....back to research and finding one! Not interested in getting rid of that 8250ti are you cdjr???



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Posted By: dwarren
Date Posted: June 06, 2005 at 12:32 PM
Contacted the shop today and the models they had left were the 9100 and 9120. Both lacking the 20 bit DAC. They said that the pioneer 8600 has a 24 bit dac in it. Good luck.

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Posted By: Chad7n7
Date Posted: June 06, 2005 at 4:12 PM

Thanks for the effort. Was hoping may have found a needle in the haystack!

I have found a 8240, and have found the answer to my question, the 8240 does have the 20-bit D/A's, so either will work for this application, as stated before, I plan on using the balanced outputs.Still would like the 8250 though!

Thanks for all of the replies you guys have went out of your way to help.



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