Best power option for 15/6/1 fEARful?

Discussion in 'Amps and Cabs [BG]' started by jamiroquai, Apr 9, 2012.

  1. jamiroquai

    jamiroquai Guest

    Jul 11, 2010
    I am buying brooklynbassguy’s 15/6/1. I am looking at three options for power and have worn out the search function. If anyone can tell me anything I’ve missed, please let me know. You need 800 watts at 8 ohms to push a 15/6/1 all the way, plus headroom. I am actually going to try to double with this thing - I play in an acoustic cover band that plays outdoor festivals. At the smaller ones I carry the “room”.

    Peavey IPR 3000 $380 plus shipping = $400.
    Adjustable high-pass filter.
    4 bands of true parametric (center, slope, amount) eq tho it’s buried in a menu and not adjustable mid-set.
    Active crossover that I won’t use unless I rewire the cabinet for that option.
    880 watts bridged into the 8 ohm fEARful through a homemade cable. Peavey engineers say it’s ok to bridge, people here have done it with no reported failures - but it’s not officially supported in the manual.

    Crown DriveCore 1500 $399 at GC.
    Adjustable high-pass filter.
    Active crossover that I won’t use unless I rewire the cabinet for that option.
    1,050 watts into the 8 ohm fEARful.

    Initially I will use either a sansamp BDDI or the pre from my current head, but I am also considering:

    Carvin BX1500 bass amp $569.
    Has a preamp (obviously, and one tube for whatever that’s worth). It’s only 10 pounds so you’re not killing yourself with weight if you add a second pre. I might add a real double bass pre someday and switch it in and out with the switchable effects loop.
    In addition to bass and treble, 3 bands of accessible semi-parametric (center and amount) mid eq, a graphic eq and 1 knob slope. Footswitch available for graphic eq.
    Not dead flat like a poweramp but it’s been scoped and there are instructions on TB how to set it flat as a reference point.
    1 knob compressor I might use – I’m not a compressor fiend and this must be optimized.
    Active crossover that I won’t use unless I rewire the cabinet for that option.
    900 watts into the 8 ohm fEARful.
    No high pass filter, however.

    It looks like the choice is between the IPR with the high pass filter or the Carvin with the preamp (plus $170 plus the cost of an outboard high pass filter). Have I missed anything? is there any reasonably clear cut winner here?
  2. Its a misconception that you NEED that much power. I push my 1515/66 with a 400 watt amp and it is loud.
  3. wcriley


    Apr 5, 2010
    Western PA
    If you ever crank a full 800 (or more) watts into a 15/6, you won't be able to hear the drums unless they're mic'd through the monitors.

    I have buried drummers with a single 12/6 and less than 450 watts.
  4. 3506string


    Nov 18, 2004
    Lawton, OK
    The IPR3000 DSP is $600. The non dsp version runs around $400 but it doesn't come with all the stuff you listed. The HPF on the non dsp version is set at 100hz. Also I believe the IPR3000 bridged is more like 1600 watts bridged into 8 ohms.

    The DriveCore's HPF is only adjustable down to 50hz, which may be a little high for your taste.
  5. BurningSkies

    BurningSkies CRAZY BALDHEAD

    Feb 20, 2005
    Syracuse NY
    Endorsing artist: Dingwall Guitars
    Yep. The price listed is for the non-DSP IPR. The extra 200$ for the DSP version may very well be worth it to you for the EQ, for the possible highpass on the very low end to filter damaging content and/or the Maxxbass feature, which is actually pretty sweet.

    I got my IPR3000 for the 380~ price and have had no regrets. Loads of power, light weight and its been solid in use. I would say that the 'low pass' that is on these amps is meant for sub-only use on a PA and isn't really applicable to the fEARful as it low passes at 100hz, for true subwoofers.
  6. 3506string


    Nov 18, 2004
    Lawton, OK
    Now that I think about it the IPR1600 DSP runs around $400 and it would put around 1000 watts at 8 ohms bridged. There's one on ebay right now for $365
  7. jamiroquai

    jamiroquai Guest

    Jul 11, 2010
    Already this thread was worth it. The knowledge base here is really something else.

    Given the feature set, I prefer the Carvin to the IPR3000 DSP at essentially the same price.

    Since the DriveCore HPF only goes down to 50hz, that's out. The HPF was the only thing keeping it in the discussion.

    So the question becomes, is there a lower-wattage head than the Carvin that makes too much sense to ignore?
  8. jamiroquai

    jamiroquai Guest

    Jul 11, 2010
    3506: what I've seen indicates the 1600 bridges to 300-320 watts at 8 ohms.

    - 1050W RMS x 1 at 2 ohms
    - 570W RMS x 1 at 4 ohms
    - 300W RMS x 1 at 8 ohms
    - 900W RMS x 2 at 2 ohms
    - 515W RMS x 2 at 4 ohms
    - 290W RMS x 2 at 8 ohms

    I could swear the website used to say 320.
  9. cableguy


    Jun 4, 2009
    North Bend, WA
    Don't forget the Carvin HD1500. They are around $300. The same power section that the BX1500 has. It powers my 12/6 and 12/sub if I need to get that loud. It's bare bones so no EQ, HPF, or DSP. But that's what a preamp for. Also 9lbs and 1500W bridged isn't bad for that price. I'm still searching for the right pre (been through a couple) but I'm happy with the amp. The sansamp BDDI won't drive it fully but It will get it pretty damn loud.
  10. lomo

    lomo passionate hack Supporting Member

    Apr 15, 2006
    FWIW you can run the Drivecore with no filter on and the 3015LF will handle it without any trouble IME, even bridging mono into a single 15-6. Whether you the ultra low content in the room is good, bad or indifferent is your call.
  11. 3506string


    Nov 18, 2004
    Lawton, OK
    Bridging into 8 ohms would put around the equivelent of 4 ohm load on each channel and double the voltage swing. So If the amp puts out 515 at 4 ohms, ideally it would put out 1030 bridged into 8 ohms.
  12. BurningSkies

    BurningSkies CRAZY BALDHEAD

    Feb 20, 2005
    Syracuse NY
    Endorsing artist: Dingwall Guitars
    My Decision on the IPR3000 was based upon the modularity of the unit. With one cab running off of each side at 8ohms, it produces in the 450/500 range. If you run both cabs on one channel, its' also good for about 500w per cab. If you need more power, then bridged it hits the 2960w number (burst and assuming your Main can provide), or just under 1500w per cab, which is well more than the fEARful 15/6 can actually handle. That gives me flexibility on stage, to run the setup three different ways as needed. If I'm up on stage and we need a channel for monitors, or for keys, I can do it and still have the 'same' expectations.
  13. jamiroquai

    jamiroquai Guest

    Jul 11, 2010
    I see the mistake I made looking at 1 load at 8 ohms. I don't pretend to understand what you said - I'll have to check out some FAQs.
  14. barryaudio


    Feb 9, 2012
    Authorized Builder: fEARful bass, greenboy designs, Bill Fitzmaurice
    If you want to go the power amp route, I suggest using an amp with DSP. The IPR1600DSP and Crown XTI 1002 or 2002 (if you want more headroom). The XTI series have a nice DSP built in with limiters as well as HPF capabilities. If you plan to run two fEARfuls someday, the XTI2002 will give you 2000W at 4Ohms. Plenty of power with some headroom and limiting capabilities. Or, you could go with a lower priced amp and purchase a separate speaker management rack unit with xovers and limiting.

    p.s. there is a lot of this info over at the fEARful forum. You may want to check in over there.
  15. Steve


    Aug 10, 2001
    At the risk of making your life more difficult...
    I use a D.C.1500 with the 50hz filter going into a few different cabs including Acmes which I believe have sort of the same design philosophy as the Fearful stuff.

    I doubt very seriously if any of you would characterize my tone as lacking in low end.

    IF your objective is to control speaker excursion with no effect on tone what-so-ever..50 may be a little high for you but, if you actually want to tighten up the bottom of a cab that puts out a bunch of bottom on its own, 50 hz is really right about where you want to be,

  16. jamiroquai

    jamiroquai Guest

    Jul 11, 2010
    Thanks, I had not looked at the XTI. It looks like it's much more usable as an instrument amplifier given the additional eq, control of the limiter and 50 presets - likely a worthwhile tradeoff for 10 additional pounds and $100 over the IPR600DSP.

    Has anyone here used the XTI series for bass?

    Thanks for mentioning the forum - I'm having trouble logging in over there and so I've requested a new ID.
  17. jamiroquai

    jamiroquai Guest

    Jul 11, 2010
    Steve, you are right of course. I understand most of what defines those notes to us are harmonics anyway. I am a little concerned about flexibility because of the double bass. I just don't know how the HPF will play out in that context. I will probably be better off from a feedback perspective with a higher HPF but I don' know yet. And in the acoustic group I'm with, we don't have a drummer so I have a lot of space to fill.
  18. jeff7bass

    jeff7bass Inactive

    Apr 9, 2009
    I would get the Carvin BX1500 and be done with it. Since you are spending good money for a top-of-the-line cab, the Carvin will give the you power, options, and EQ flexibility that very few heads or amp/pre-amp combinations can give you. You can bridge the head’s power into a single cab for max headroom/clarity, OR, if you add a second cab (preferably an identical cab), you have the choice of running bridged @ 1500w or running in bi-amp mode at 450w per cab. I run my BX1200 in bi-amp mode and it’s an amazing function. It helps me overcome any room or stage situation I may face. There’s no other head like it. The Puma comes close but can only bridge at 8 ohms instead of 4 ohms (like the Carvin). They thought of everything with the BX1500, IMO.
  19. mbelue


    Dec 11, 2010
    Two things.
    1st. The IPR DSP is a different animal to the IPR nonDSP. Bridging may not work the same way on it. Particularly when using its DSP functions. All of my searches here and on Peavey's forum have yielded instructions for the nonDSP version.

    2nd. The BX1500 looks awesome especially in its technical specs, but some people particularly fEARful users have found it cuts out when bridged for the full 1500. Could be just one unit, check the fEARful forum for details. Also others have reported clipping its input very easily. Once again this depends on the signal they are giving it and may not apply to you.
    I only mention these things because you seem to be interested in flexibility, which may or may not be inherent in these models.
  20. jamiroquai

    jamiroquai Guest

    Jul 11, 2010
    Thanks, that is extremely helpful!