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Best speaker for Ampeg B15N cabinet?

Discussion in 'Amps and Cabs [BG]' started by Ringhammer, Dec 19, 2018.

  1. I have an old (late ‘60’s/ early 70’s) B15 cabinet (no amp on the fliptop...) that I plan to use with some of my smaller amp heads, such as a BT25 and maybe a B25B (if I can find one cheap). Basically going to run 50 to 100 watts into it. I’m looking at Eminence speakers and the Legend CA 154. I am definitely putting a 4 ohm in as the BT25 runs at 112(?) watts at 4 ohms, and I may occasionally plug in one of the old SVT’s into it as well, so 4 ohms for sure.

    I will be keeping my eye out for a B15N that would go with this cabinet, but I imaging that will be hard to find...

    Anyone have any thoughts on this?

    Also, does the early 70’s B25B head have a selector to run at 4ohms? I have a mid 70’s B25B 2x15 cabinet that has a 4 or 16 ohm switch, so I would think that the B25B head has a 4 ohm option.
  2. If you intend to add the B15 amp portion in the future your choice is only 8Ω. A B15 has no 4Ω tap only 8Ω with a single cabinet and 16Ω with an extension cabinet in series.
  3. coreyfyfe

    coreyfyfe Supporting Member

    Nov 19, 2007
    boston, ma
    The B25B is 8 or 16 ohms. The B25B cabs came with the series parallel switch so they could be used with the other amps - V4, SVT, etc, - which supported 2 and 4 ohm operation.

    If you plan to use this cab with a B25B get an 8 ohm driver. If this is the 69-80 style thiele cab an Eminence Beta 15 is supposed to be a good fit. I tried one in my double baffle cab and had them in my B25B 2x15 and they worked well. I haven't tried one in the later cabs. I think @JimmyM has a later style B15 cab and has tried more than one speaker in it? You could also try asking in the portaflex club thread.
    Stumbo likes this.

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