baby blue copy diy cab

I found some 8" drivers that spec out similarly to what's loaded in a baby blue 2 cab
GRS 8FR-8 Full-Range 8" Speaker Pioneer Type B20FU20-51FW
link
http://www.parts-express.com/grs-8fr-8-full-range-8-speaker-pioneer-type-b20fu20-51fw--292-430

they are dirt cheap, I was thinking of making a nice practice amp of 2 x 8, and then a 6 x 8 cab to go with it.

The Baby Blue drivers were only rated to 60 watts, i couldn't find any other info.

OK, now, tell me why these are no good and I need to buy something much more expensive.

 

I saw that review, but I also saw that it hadn't been broken in yet. I would guess xmax improves with age.

Too, late for $$ier speakers, I shot my wad on a SWR 350 burgundy/redface. Guess I will be cabinet borrowing for a while.
I've been trying to replicate a baby blue and i got this far

160 watt 4ohm power amp (Flying mole)
12ax6 preamp ART studio whatever DI/Tube mic pre
compressor/limiter boss

With that setup it sounds killer thru a kappa 15a in a 3.7 cu box with a 14"(approx) vent.
Loud enough to max the kappa (started to distort without the amps clipping) at about 80%, move a snare drum across the riser, and thoroughly piss off the girl in the middle of a singing lesson that was going on in the "soundproof" studio adjacent! (so I had to stop testing, i'm not that much of a dick)
Didn't have a DB meter. Also tried it with 2 15" community speakers but those are low sensitivity and cruddy anyway. Oh and a sealed back Randall 4 x 12 guitar cabinet, that sounded pretty good too, but different room. 100 watts at 8 ohm is all i was able to test, didn't have a 4 ohm cab. Much louder than i was expecting.

To complete the copy I still need

Aural Enhancer
Semi Parametric EQ (at least in the midrange)
...some swr magic , yet to be determined.

So as an update, I was bouncing back and forth between these and the selenium 8"' s on clearance, but since the JBL ones needed a 4cu box, These will work. It's just a practice amp anyway. I figure I'll take an exacto knife and cut off that little whizzer thing and use a good 5" driver (actually probably a 6" because i have them) and a 1" with a way to dial them in.

Got the Redface from ebay for $225 and shipping... Used to have a super Redhead, and If my memory is good, I think these sound a touch better than the redhead, closer to the Baby Blue, and way better than the "working" line.

I got 4 of these drivers for about 50$. Building a baby blue copy, proper dado and glue and brads, 1" thick (the original says 7/8 thick plywood, I have 2 full sheets of good 1/2" so i'll double it with liquid nails) it will be heavy, might as well make 2 while I'm at it. I can always replace the drivers later if these guys suck. I'm rooting for them tho!


Now I need to go look into greenboy's Fearful designs and start saving my $$$, Going to build one properly, with the correct drivers, and they ain't cheap. I love the Idea of the Neo drivers, Light rules. My bass is 20+ lbs of Way Too Heavy, All future builds will be -12lbs. I will start with the 1 15, but 2 cabinets of the same size give you 6db free (to the ear anyway, or so they say..) and I like modular. I cant wait for the day i can make 30hz... I'm working on some solo material with a looper, probably wont have PA support for most places I can get to let me perform that, so...

 

Ok, took your advice, building a cab is a huge pita, so might as well use decent drivers. I got 2 of the selenium, and 2 of the cheap ones too, for a bedroom amp. About tge Same size as a baby blue, but I'm making that one with light plywood stuffed with fill, the selenium driver I need to work out what size to make the cab, I think it will need to be sealed to keep it small. If the selenium s turn out good, maybe a 6x8 cab, for the redhead to push, I like the Henry the eight by eights sound, fast response and thumping lows and low mids.

I wish I had never looked into cabinet building, to quote Cypher from the matrix " ignorance is bliss".
On the other hand I had some killer cerwin Vega 18's that were in huge svt shaped cabinets, all they needed it turns out was a couple of vents... oh well, sometime s ignorance is ignorance I guess.

 

I was going to wire that way, but I want 4 ohms at the amp. Tried 2 ohm and started overheat ing it.

Pretty sure that looks right. Number s do funny stuff in my head, I need to write everything down, especially simple math for some reason is harder.

 

A member reached out to me and is selling me his Baby Blue Monitor!!

So now i can copy directly from the real deal! Pull the carpet and see how deep it's dadoed (is that a real word?), where it's braced, how much stuffing is in it, etc. I have had GAS for this cab since I lost mine, the Summer Jerry Garcia passed away, Stolen from my Friend Marty's house in Boulder Colorado. If anyone lives in boulder, you know that little house with a yard across the street from Penny Lane coffee shop? We used to have some wicked jams there! But I had all my gear in the shed, I was leaving it for collateral for a VW bus I was buying from a friend (brand new American Standard jazz bass too, among other things!OUCH, still stings) but he trusted me too much, and never picked up the gear. It was only supposed to be there a few hours...3 weeks went by, and my gear all floated away. There WAS a note from the burgular handwritten in sharpie marker on a torn paper bag, apologising for stealing it!
I'm going to make mine a mirror image with the 5 on the other side.

The only trouble is one of the 8's is bad, it's one of the ones with celestion speakers.
Will this speaker work correctly in a Baby Blue monitor? What are the "Long Throw" eminence I heard about? Are they still available>?
If only one 8" is bad would you need to replace both? They are the celestion ones.
Eminence Beta-8A 8"

I just realized something, the member is from COLORADO! If he bought it second hand, IT might be my long lost CAB!!! That would be awesome indeed as that would bring me closer to finding my Ken Smith 6 string!!(John Adam Cotter is in the serial,CR custom bolt on lacewood top with a chopped off top horn)