Hey, actually built something for myself BP2000 crossover

VR3VR3 Posts: 21,818
edited February 6 in DIY, Mods & Tweaks
So... I literally have not done anything speaker related for myself in 2-3 years. I decided tonight I would spend maybe 3-4 hours and have some fun. I applied dynamat to the subwoofer basket of one of my BP2000. I also noted they did not allow the rear pole piece vent any room to breathe so I rearranged some polyfill to allow that.

I did not use the crossover in the speaker as a reference, instead I used the latest version from Definitive. The BP2000 was unique in that it was originally made in the USA, so there were 2-3 versions of the crossover.

I am also planning to change out the power supply capacitors on the amplifier as well as the binding post in the next while. No rush. I plan on keeping these for a while!

I kept this one pretty simple -

Tweeter network -
Clarity Cap CSA
Mundorf Mox
Jantzen Perfect Lay
Stock wiring

Midbass Network -
Clarity Cap CSA/ESA
Mundorf E-Cap (in series are bypassed by Clarity ESA)
Mundorf Mox
Jantzen Permite Core (no end caps)

I only did one... I should have time to do the other one maybe in the next few weeks!cxwda8dba6vy.jpg
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"No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro

Comments

  • msgmsg Posts: 3,394
    edited February 6
    Nice, Trey. I was checking out these BP2000s after reading this. Interesting design. Are these combo system use? If so, curious as to how you like them for music? What sort of positioning do they see with that rear firing array?

    I remember looking at Deftech a couple of years ago in passing when I was just starting out. I really had no reference, though.

    Re: the crossover - Did many of the component values differ in oe vs what you found in the latest version?

    Neat project.
    Curious to hear how it goes when you upgrade the amp.
  • VR3VR3 Posts: 21,818
    edited February 6
    Thank you! :)

    I really like Definitive because of the built in powered subwoofers. I always am a huge fan of their 6.5" woofer. Interestingly enough, the tweeter in the BP2000 is the best iteration of the aluminum tweeter they use that I have heard yet. They definitely are not the best music speaker for dedicated 2 channel. On the flip side, I would say they are one of the best speakers for HT/Gaming/Back ground music. The bipolar array really throws out a wide stage for background music that can fill up the whole house.

    In my use, they are about perfect for what they can do and the footprint they take up!

    I really position them just like any other speaker, the bipolar array likes atleast a foot off of the back wall. I also still like to use toe in, so the back array is firing towards the corner and the front array towards the listening seat.

    The crossover in my BP2000 versus the one Definitive sent me is dramatically different. In return the sound is also dramatically different between the modified and unmodified. The bass transition in the modified is much improved and the highs really came to life. I attribute the latter to the nicer components as Definitive does not use very nice components in their crossovers.

    Build quality and sound quality wise is much better than what Definitive is currently offering. I really feel DT peaked with the 7000 series.
    Vr3Mods.com ///// Version3Audio.com

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • VR3VR3 Posts: 21,818
    This is the stock crossover for reference
    Vr3Mods.com ///// Version3Audio.com

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • msgmsg Posts: 3,394
    We got new buttons, Trey :)

    je9xny69udeh.jpg
  • oldrockeroldrocker Posts: 1,610
    Super cool.

    What a skill set to have....
  • VR3VR3 Posts: 21,818
    Thank you :)
    Vr3Mods.com ///// Version3Audio.com

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • F1nutF1nut Posts: 38,136
    'bout time.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


  • VR3VR3 Posts: 21,818
    edited February 6
    ks6my4g5nrdp.jpg
    Vr3Mods.com ///// Version3Audio.com

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • mrbironmrbiron Posts: 4,400
    VR3 wrote: »
    ks6my4g5nrdp.jpg

    Holy ****!
    Zu Audio Omen MK-1B's, Peachtree Decco65, Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, Zu Mission SC's, HTPC, One, Bottlehead Reduction & Crack w/Speedball
  • voltzvoltz Posts: 4,675
    Wait till the Neighbor Hood finds out you have all that copper in your house!
    2 ch- Polk CRS+ * Vincent SA-31MK Preamp * Vincent Sp-331 Amp * Marantz SA8005 SACD * Project Xperience Classic TT * Sumiko Blue Point #2 MC cartridge

    HT - Polk 703's * NAD T-758 * Adcom 5503 * Oppo 103 * Samsung 60" series 8 LCD
  • warrenwarren Posts: 541
    You have come a long way, I remember when your Mom drove you to a Polk gathering!
    Now you have the American dream!!! I'm happy for you!!!!!!!!!!!!!!!!!!!
    Some final words,
    "If you keep banging your head against the wall,
    you're going to have headaches."
    Warren
  • VR3VR3 Posts: 21,818
    Lol, thank you :P I'll never forget being the fourteen year old at Polk HQ sitting across from Matt Polk! Good times! :P
    Vr3Mods.com ///// Version3Audio.com

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • oldrockeroldrocker Posts: 1,610
    VR3 wrote: »
    ks6my4g5nrdp.jpg

    Jeez Oh Pete, now your just being mean... :o

    Oh yea, you outta seem me do the girls's laundry. The whole separate these, don't dry those, these hang up...I got it!!! :#
  • VR3VR3 Posts: 21,818
    edited February 14
    Little better picture! jptphqohoyqy.jpg

    lzn72hnggj95.jpg
    Vr3Mods.com ///// Version3Audio.com

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • VR3VR3 Posts: 21,818
    uzwbyshbz7wy.jpg
    Vr3Mods.com ///// Version3Audio.com

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • Tony MTony M Posts: 3,290
    A true Master of your craft !
    Beautiful reconstructions !
    Most people just listen to music and watch movies . I am glad to be a part of a select group that tries to take our auditory and visual senses to a higher level: we EXPERIENCE them.... GOT SDA?... Got TFM ?
  • Dennis GardnerDennis Gardner Posts: 4,727
    I understand ease of disconnection, but since all the other components are of higher grade than OEM parts, are the molex connection and crimp type barrier strip a weak point now?

    Just for my inquisitive mind, not a judgement of your work.....those look great!
    HT Optoma HD25 LV on 80" DIY Screen, Anthem MRX 300 Receiver, Pioneer Elite BDP 51FD Polk CS350LS, Polk SDA1C, Polk FX300, Polk RT55, Dual EBS Adire Shiva 320watt tuned to 17hz, ICs-DIY Twisted Prs, Speaker-Raymond Cable

    2 Channel Thorens TD 318 Grado ZF1, SACD/CD Marantz 8260, Soundstream/Krell DAC1, Audio Mirror PP1, Odyssey Stratos, ADS L-1290, ICs-DIY Twisted , Speaker-Raymond Cable
  • VR3VR3 Posts: 21,818
    Thank you. The way the bp2000 is built, removing the internal wiring is next to impossible and something in the hole is even more impossible. Hence utilizing connectors
    Vr3Mods.com ///// Version3Audio.com

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
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