Delta-15 Drivers in a Sealed Cab

[Count Bassie]

Any thoughts on a relatively narrow 215 sealed cab loaded with Delta 15s? It's be used for poppy-rock gigs. I'm not headed for deep bass here I think, but low-mids and harmonics would be where it's at. I guess.

Discuss?...

[two fingers]

Call US Speaker. http://www.usspeaker.com/ They will tell you if it will work. Of course, if you already own the cab and speakers, throw them in and see what happens. If you are getting ready to buy the speakers, call them first and save yourself some time and energy by getting speakers designed for the dimensions of your cab.

[SactoBass]

Originally Posted by Count Bassie

Any thoughts on a relatively narrow 215 sealed cab loaded with Delta 15s? It's be used for poppy-rock gigs. I'm not headed for deep bass here I think, but low-mids and harmonics would be where it's at. I guess.

Discuss?...

CB:

A parameter called EBP (calculated by dividing FS by Qes) is often used to determine if a speaker is best suited for a sealed or ported enclosure. An EBP close to 100 usually indicates a speaker is best suited for a ported enclosure. An EBP closer to 50 usually indicates a speaker is best suited for a sealed enclosure. A speaker with an EBP between 50 and 100 might work well in both types of enclosures. This is purely a general rule of thumb, but it will give you an idea as to whether the driver you are considering is well suited for a sealed enclosure or not.

[Count Bassie]

Thanks you guys, appreciate your time! I left a mssg at US Speaker, and will now commence procedures with my cell-phone calculator!

The cab is already loaded, by the way, and the dude's selling it for $60. Small expenditure- but an expenditure nonetheless! I figure if it's a handy haul for the pick-up rock gigs, it's worth it. Looks quite portable...

[Count Bassie]

We're looking at around 70 for a "Good for Sealed" score. Might be ok... for $60, yeah.

[JimmyM]

The Delta and Beta are very good for vintage cabs of all types since they sound very much like the old CTS speakers of the 60's and don't cost a lot.

[Count Bassie]

Originally Posted by JimmyM

The Delta and Beta are very good for vintage cabs of all types since they sound very much like the old CTS speakers of the 60's and don't cost a lot.

Nice. That sound is a nice one to have around, I'm trying to score it just now. Though this isn't really a vint cab, I like the idea of the different sound- as well as other reasons for picking it up.

[Count Bassie]

Originally Posted by JimmyM

The Delta and Beta are very good for vintage cabs of all types since they sound very much like the old CTS speakers of the 60's and don't cost a lot.

I've got an old Polytone 212 bass combo here with '74 CTS in it. Very different, I like them. Don't use it though, much- it's been handed to my daughter to amplify her string harp with now.

[JimmyM]

Originally Posted by Count Bassie

I've got an old Polytone 212 bass combo here with '74 CTS in it. Very different, I like them. Don't use it though, much- it's been handed to my daughter to amplify her string harp with now.

Bet that sounds great with harp!

[dhsierra1]

Originally Posted by JimmyM

The Delta and Beta are very good for vintage cabs of all types since they sound very much like the old CTS speakers of the 60's and don't cost a lot.

do you prefer one over the other and if so why? I know you've been an advocate of these for some time so I'm curious since you have the experience with them

[Count Bassie]

Originally Posted by JimmyM

Bet that sounds great with harp!

It's the perfect amp for it- big voluminous cab, nice old full-range 12" speakers, Bass/Treble/Volume, that's it. Pretty brilliant machine really, and right, definitely not just a bass amp. I should get some clips of it and put 'em on Soundcloud.

[BogeyBass]

Sure the pair of delta 15's would sound great as long as you dont hit em with more than 60watts.

Sounds better in a larger box, not much power handling
good highend very close to factory cheapos from yesteryear

better options if you need more power handling.
depends on how big and deep the box is.

[JimmyM]

Originally Posted by dhsierra1

do you prefer one over the other and if so why? I know you've been an advocate of these for some time so I'm curious since you have the experience with them

I've only got experience with the Deltas, but a lot of folks in the Portaflex Club as well as Bruce, the head of Fliptops.net, loves the Betas.

As for power handling, it's true that cab size and porting or lack thereof will reduce power handling, but 60w seems extreme for either of them, although in a little 60's Fender cab I could see it greatly reduced. I've smacked a Delta in my double baffle B-15 cab pretty darn hard with as much as I could give one cleanly with a 300w amp, and it didn't start breaking up until I hit the outer reaches. Doubt you could do that with a little Fender cab, but hopefully you'd do better than that

[dhsierra1]

Originally Posted by JimmyM

I've only got experience with the Deltas, but a lot of folks in the Portaflex Club as well as Bruce, the head of Fliptops.net, loves the Betas.

As for power handling, it's true that cab size and porting or lack thereof will reduce power handling, but 60w seems extreme for either of them, although in a little 60's Fender cab I could see it greatly reduced. I've smacked a Delta in my double baffle B-15 cab pretty darn hard with as much as I could give one cleanly with a 300w amp, and it didn't start breaking up until I hit the outer reaches. Doubt you could do that with a little Fender cab, but hopefully you'd do better than that

very helpful info, thank you Jimmy

Since the OP is bringing up the concept of a sealed 2-15 it sorta brought me to realize I need to have a good sealed 1-15 for my tube amps (Fender, PeaveyStein, eventually Ampeg) for lower volume and wattage (60-100 watt) applications.

[Count Bassie]

You guys think a GK 800RB would be too much to run into this cab with the Deltas?

Dimension-wise, it's about:
36" H
19" W
not sure how deep, maybe 13"; but I guess being sealed it's a bit less of an issue. Yes?

[oerk]

Originally Posted by Count Bassie

You guys think a GK 800RB would be too much to run into this cab with the Deltas?

Sealed cabs protect the speakers from over excursion better than ported ones. You'll be safe as lang as you use your ears.

What kind of Delta 15 were you looking at? There's the A, B, LFA and Pro-15A. All of them except the Pro have a Qts between 0.5 and 0.7 and would therefore work in a sealed cab, depending on internal volume of course.

I can do a simulation if you want.

[oerk]

Based on the dimensions given, I'm assuming a box size of about 120-130l.

The different models all behave pretty identical:


Looks good to me!

[Count Bassie]

Originally Posted by oerk

Based on the dimensions given, I'm assuming a box size of about 120-130l.

The different models all behave pretty identical:


Looks good to me!

Dude, that's brilliant of you- thanks! Yeah it looks ok. I'm not sure which model it is, but I'm pretty sure they're either As or Bs. Not LFs...

Much obliged, oerk.

[oerk]

Argh, no, disregard that, you were asking about a 215 cab, right?

The simulation is based on a single driver.

I'm doing a new simulation... back in a few minutes...

[Count Bassie]

Nice... I'm hangin'...