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Sound Reinforcement - Forums for Live Sound Professionals - Your Displayed Name Must Be Your Real Full Name To Post In The Live Sound Forums => LAB Subwoofer Forum => Topic started by: Rick Alan on August 29, 2013, 11:37:36 pm

Title: RCF Sub 8004-AS ????
Post by: Rick Alan on August 29, 2013, 11:37:36 pm
Looking for an amazing powered sub for small events.  Does anyone have any experience with this sub.  RCF is saying its the best single 18 they have ever made.
Title: Re: RCF Sub 8004-AS ????
Post by: Art Welter on August 30, 2013, 11:35:11 am
Looking for an amazing powered sub for small events.  Does anyone have any experience with this sub.  RCF is saying its the best single 18 they have ever made.
The 8004-AS probably uses the RCF LF18X401, which best fits the description of the driver used.

With a respectable 11.5mm Xmax, the LF18X401 is capable of  "a serious amount of low frequency" as the spec sheet mentions.
However, to hit 136 dB with 2500 (peak) watts would require a sensitivity of over 103 dB.
Using RCF's chart showing the  LF18X401 in a reflex box with a net volume of 160 liters (similar size as the 8004-AS) it ranges from below 88 dB at 40 Hz to about 96 dB at 80 Hz, which would result in around  7-15 dB less than 136 dB using 2500 watts.

125 dB peak output would be a realistic expectation of the 8004-AS.
Title: Re: RCF Sub 8004-AS ????
Post by: Marjan Milosevic on August 31, 2013, 10:12:20 am
Never liked any rcf subs. Also check out the graphs on them, they seem like they use the same graph for all of them.
Title: Re: RCF Sub 8004-AS ????
Post by: Peter Morris on September 04, 2013, 04:51:14 am
Looking for an amazing powered sub for small events.  Does anyone have any experience with this sub.  RCF is saying its the best single 18 they have ever made.

Hi Rick,

I have both the 8001s and 8003s. I have not heard the 8004 but I suspect it will perform slightly better than either of these.  The 8001s & 8003s are great little subs, they donít go extremely low but are tight and punchy and sound great. For what they are I suspect they will be one of the better options for a powered box of that size and price Ė Iíve not found anything better in OZ.
Title: Re: RCF Sub 8004-AS ????
Post by: Doug Fowler on September 04, 2013, 01:21:18 pm
Never liked any rcf subs. Also check out the graphs on them, they seem like they use the same graph for all of them.

Marjan -

Please stop commenting on competitor's products.  It's the number one rule here.  You are a manufacturer, and must abide by the rules as such.
Title: Re: RCF Sub 8004-AS ????
Post by: Matt Vivlamore on September 18, 2013, 11:05:55 am
Is the 8004 shipping yet?  I saw it was a new release.

I am looking at the 8004 next year as a potential candidate to replace my SRX718s (moving to all powered, and the VRX918SP is on the radar as well).  I do like the versatility of the sub and it works as a stacking base for the HDL10A, HDL20A or NX23A tops.
Title: Re: RCF Sub 8004-AS ????
Post by: Joe Hinkens on November 04, 2013, 11:00:45 am
Looking for an amazing powered sub for small events.  Does anyone have any experience with this sub.  RCF is saying its the best single 18 they have ever made.
Hi Rick,
I recently purchased a pair of the RCF 8004 AS subs. I love them and there's a lot to love.  We have them sitting under a pair of Fulcrum Acoustic FA28ac tops and they're being fed by an Allen & Heath GLD80 desk. We're a local, working rock band, small venues up to 400 people or so. Please keep in mind my comments are as a weekend warrior, club musician. I don't have the technical knowledge that many here on this forum possess.  I don't have miles and miles of experience with different subs either, but I've tried a couple of the active Mackie subs along with a few others. For the past couple years we've been running QSC KSubs or QSC KW181's. I thought the QSC's sounded great but we weren't getting quite the punch we were looking for with our drum rig.

I got interested in the RCF 8004's when I read about them. I found that the folks at RCF were extremely helpful before and after the sale. Customer service is high on their priority list.

We rehearsed a couple times with the 8004's and then hit the street with them. We've played two live gigs over the past two weekends and couldn't be more pleased.  The sound quality is much better than what we experienced with our previous setup. I should note that the Fulcrums are incredible tops but the recent addition of the 8004's really complimented the Fulcrums nicely.  We immediately noticed an increase in definition, clarity, and punch but still retaining a very musical characteristic. The 8004's can really move some air but even at lower volumes, they are fat, full, and clean. When they are cranked up, they just retain the same characteristics. They don't get muddy, they just get bigger!

All the other band members heard the difference immediately. The drummer commented that they just sound more 'real'. We had tons of other positive comments from audience members, some who have heard us before and others who had not.  They were all very impressed with the sound quality.

The other thing I think is worth mentioning is the physical handling of these boxes. At first glance, I thought "man these things are big". They tip the scales at about 112 lbs as I recall. We purchased the optional casters which are really nice casters. RCF has intelligently positioned the casters at the perfect tipping point that makes standing them up a breeze, very well balanced. So we were pleasantly surprised at how easy they are to maneuver, load, and setup. Build quality looks superb.

I might suggest you talk to others who have heard these things. That's what I did, and every person I came in contact with had nothing but praise. Add me to that list. :-)
 
Title: Re: RCF Sub 8004-AS ????
Post by: John Chiara on November 04, 2013, 02:01:35 pm
What is the price of this?
Title: Re: RCF Sub 8004-AS ????
Post by: Joe Hinkens on November 06, 2013, 02:03:59 am
What is the price of this?
Give Mike from www.audiopyle.com (http://www.audiopyle.com) a call.  He can get you a good price.
Title: Re: RCF Sub 8004-AS ????
Post by: JohnKrupa on December 05, 2013, 05:00:07 pm
Greetings everybody,
This is John Krupa, Director of Sales from RCF in the USA.  I am very sorry to interject into this conversation.  I was asked to join and I promise to be brief.  I love the independent voices expressed on ProSoundWeb and I do have to say that we believe there are many outstanding products in the marketplace and "to each their own".  I just wanted to correct some things:  The Sub8004a (and the vast majority of our products) use proprietary drivers that were designed SPECIFICALLY for that product.  Those drivers have no SKU# you'd recognize and they are not available for resale (they are only available through an authorized service center for replacement).  As you all know, a transducer will performs differently in cabinets with different dimensions, etc., therefore, we take the extra step of designing drivers specific to the task at hand.  We've been building transducers since 1949, it's what we do! To prove what I'm saying, I will take some pics of our team of technicians disassembling a Sub8004as just for you and a pic of the driver.

If anyone has further questions about product specifications, please give us a call.  Please continue with your great conversation and pardon the interruption.  Hey... and, thanks for the kind words!  It's really great to read your posts!  We are sincerely glad to have partners like you!
Title: Re: RCF Sub 8004-AS ????
Post by: JohnKrupa on December 05, 2013, 05:05:51 pm
Here's pics of our crack team of techs taking apart a new Sub8004as and the woofer itself
Title: Re: RCF Sub 8004-AS ????
Post by: Tom Roche on December 05, 2013, 07:47:17 pm
Can anyone tell me the approximate street price in USD of the RCF 8004-AS?
Title: Re: RCF Sub 8004-AS ????
Post by: Rick Alan on December 18, 2013, 09:27:54 pm
John 

How does the sub sound?  Is it worth the money? Will it do 136spl max?  Does it go low?

Thanks

Here's pics of our crack team of techs taking apart a new Sub8004as and the woofer itself
Title: Re: RCF Sub 8004-AS ????
Post by: Mac Kerr on December 18, 2013, 09:36:06 pm
John 

How does the sub sound?  Is it worth the money? Will it do 136spl max?  Does it go low?

Thanks

The frequency response graph is on the online data sheet. The peak output is at about 63Hz, the -6dB point below that (+/_3dB) is about 45Hz. The 30Hz output is about 10dB down.

Mac
Title: Re: RCF Sub 8004-AS ????
Post by: Michael Becker on January 30, 2016, 05:53:57 pm
I know this is already an old posting.
We are looking for a comparison of the AS 8003 and 8004. Will the 8004 worth its higher price?

Does anybody have an experience with both subs in live performance?
Thanks in advance.
Title: Re: RCF Sub 8004-AS ????
Post by: Andrea Litti on January 31, 2016, 07:26:38 am
I know this is already an old posting.
We are looking for a comparison of the AS 8003 and 8004. Will the 8004 worth its higher price?

Does anybody have an experience with both subs in live performance?
Thanks in advance.

I'm a former owner of 4x 8003's, now i have 4x 8004's. 2x 8004's will sound louder, better and get lower than 4x 8003's.
Title: Posting Rules
Post by: Mac Kerr on January 31, 2016, 08:22:51 am
I know this is already an old posting.

Please go to your profile and change the "Name" field to your real first and last name as required by the posting rules displayed in the header at the top of the section, and in the Site Rules and Suggestions (http://forums.prosoundweb.com/index.php/board,36.0.html) in the Forum Announcements section, and on the registration page when you registered.

Mac