wow, no replies at all? yes to two 4-ohm speakers in series making 8-ohms which should be safe for the amp section.. but if you want it more rockin, pay more attention to the speakers sensitivity ratings than wattage capacity.
a speaker rated 91db 1w 1m is going to be lots louder than one rated 86db 1w 1m, near twice as loud to the ears.
being its only one 4" 5 watt 8-ohm speaker, you've got a one channel mono amp, is ok and oh well to me both..
my (toy!) zizzle PotC, wired in a very old 8" 8ohm one watt speaker in series to the stock 2-1/4" half watt one, mounted the 8 into the bottom cover perfed with a 3/8 drill bit, gives much fuller sound, it even throws good bass. the puny audio section is seeing a 16 ohm load instead of 8 is safe, the difference in sound level-quality, very surprising.
I'd think same strategy for KISS, find a cheap high sensitivity 10-12" speaker to mount in the cab's floor if theres room to put it there. the 10-12" is going to be weaker in the higher freq's, especially over padded carpet, where you probably wont even need to think about using a passive crossover or low pass filtering for decent enough sound.
some (very) basic math:
6" speaker - radius 3", squared is 9, times pi is 28.27 square inches, times two speakers about 56.5 worth.
same math to a single 8" gives 50.25, to a 10" gives 78.5, and to a 12" gives 113 sq in, over twice what the pair of 6's can offer up. if a speaker is really efficient the 10 or 12 is gonna sound pretty darn fat, even if only seeing just a couple of watts of power. the numbers are rounded and not accounting for speaker cone surround width etc.. but it sure helps convey the simple concept, "bigger is better". if theres room for it I'd go with putting a 12 in its floor, OR, if the 10" speaker has a good chunk better db/w/m specs, its likely gonna be lots more bang for the buck too.
puny 4 being 12.5 sq in at best, this'd be going HUGE but hey.. zizzle went from 4 sq in to 54 worth, is much nicer and about same x10 factor to raw speaker surface area for sound, not adding anything at all in there for amplifier.
you can go with the pair of 6's of course, personally I'd go with this BIG FAT (small power) MONO, obviously lol.
it's a possible to get a bit more thump from the same arrangement by popping a tuned port through its floor too.
diameter and length of port tube can be calc'd from the speaker specs and the cabinets cubic footage for a sweet-spot range in lower freq's, if you want to take it that far and that technical, yeah it'll sound "even fatter than that!".
at front of cab is a bit closer to ear floor bounce, but towards rear maybe better exploiting floor+wall+cab bottom.
pinball machine cabs are pretty good cubic footage for generating some healthy bass from small power, so why not?
(unless of course there aint room at all for none of it, ouch.)
anyhow, thats the direction I'd go without using a second amp to get it more rockin. maybe look MCM woofer at Amazon or Goldwood at PartsExpress arent expensive for decent efficient. again, nevermind about how many watts a speaker can handle, its never going to see anywhere near that anyway, so go for the highest db/1w/1m efficiency.
the stock 4" in series -technically- is going to see half the power when its wired up in series, if its still in good shape its probably going to sound just fine and not any different of itself, whats coming out from underneath backing it up is pretty likely gonna sound balanced enough ballsy, if not, maybe try a 2-way crossover, or swap in a different 4 thats less efficient if its "too in your face" or vice-versa needing one more efficient to keep up, is easy enough to do later.
Manitowoc, WI
