Can anyone explain this "port"? Ashdown Studio 8

[SaltyFingers]

So I have this Ashdown Studio 8 small combo amp. I love it. Perfect for my apartment and it really sounds great. I took the speaker out to see what it was (oddly enough it is a 4 ohm 20 watt speaker where the amp is clearly listed in their manual as "30 watts into 8 ohms"... whatever that means lol... I guess that should be another post). When I opened it up, I saw that the port tube goes all the way to the front panel of the cab with zero ports opened except for the part on the back. It is essentially a sealed cabinet with this tube in it that is separate from the rest of the cabinet.
Is the front panel supposed to reverberate through this tube or is the tube there for the option to cut it off and make it a ported cab if desired?

Thanks for any help.
Salty

 

[LP Custom]

Interesting. Their website shows no port on the current model.

 

[anderbass]

If you bought it used, the previous owner might have replaced the speaker and installed a longer port tube to achieve his version of a sealed cab.

But if you bought it new, maybe Ashdown ran out of the correct speakers and installed a substitute; and the assumably worker that was supposed to cut that port tube off at a certain length, didn't...

 

[Redbrangus]

Can anyone explain it? I doubt it.

 

[Nebadon2000]

Can anyone explain it? I doubt it.

Hopefully Ashdown can

 

[Redbrangus]

I would guess that somewhere in the assembly process, the instruction "cut duct to length" was overlooked or misinterpreted. It would be amusing to know how many units like this are out in the wild.

 

[agedhorse]

No idea, perhaps an email to Ashdown support might get you the answer.

 

[MultiScaleMale]

The Sweetwater page shows the port on its listing, so not an aftermarket mod by a previous owner. Shine a light in the port to confirm that it is really closed all around towards the front of the amp. Wondering if there is a “port in the port” towards the front and bottom.

 

[MuseChaser]

Shot in the dark guess...

They use the same cabinet for more than one model combo to save on manufacturing costs. The cylinder is sealed and just serves as a stiffener/brace in one model, and is cut and opened to act as a port in a model with a driver with different T/S parameters?

 

[abarson]

@MadJack mentions this and I thought it bizarre or a one-off. You've now confirmed the inexplicable.
Ashdown Studio 8 Review Plus

 

[jTrolt]

It was just a super simple way to create a pocket to stuff your cables into.
?

 

[Wood and Wire]

It's just a cardboard poster tube - never seen that before (usually plastic).

Was it bought new?

Maybe it was meant to be cut to a specific length, and somebody went to lunch?

I'd get in touch with Ashdown, as this, coupled with what you describe as the incorrect speaker according to the product specs, are curious anomalies.

 

[Ostie]

If you bought it used, the previous owner might have replaced the speaker and installed a longer port tube to achieve his version of a sealed cab.

But if you bought it new, maybe Ashdown ran out of the correct speakers and installed a substitute; and the assumably worker that was supposed to cut that port tube off at a certain length, didn't...

Yeah, that cut-out on the back is pretty rough around the edges. Looks like it was done with a hole saw. I don’t think it’s factory specs. I would be suspicious that it’s not a factory spec driver, but I’m not familiar with that model, but someone else here probably is.

 

[MadJack]

The "port tube" is actually a cord storage tube. It wasn't intended to be used as a tuning port, but it was the correct diameter and appropriately located to be used as one, if you don't mind a rear firing port as I did. It wasn't easy to do, but I was able to cut the tube while it was inside the cab.

As for the speaker impedance, who ever wrote up the specs in the owner's manual and/or ad copy may not have known the actual impedance of the speaker used in the circuit.

 

[Carl Hillman]

So I have this Ashdown Studio 8 small combo amp. I love it. Perfect for my apartment and it really sounds great. I took the speaker out to see what it was (oddly enough it is a 4 ohm 20 watt speaker where the amp is clearly listed in their manual as "30 watts into 8 ohms"... whatever that means lol... I guess that should be another post). When I opened it up, I saw that the port tube goes all the way to the front panel of the cab with zero ports opened except for the part on the back. It is essentially a sealed cabinet with this tube in it that is separate from the rest of the cabinet.
Is the front panel supposed to reverberate through this tube or is the tube there for the option to cut it off and make it a ported cab if desired?

Thanks for any help.
Salty

That is the ambifacient lunar waneshaft.

It prevents side fumbling.

 

[ahc]

That is the ambifacient lunar waneshaft.

It prevents side fumbling.

As explained here:

 

[sacahill42]

On a side note, side fumbling has also been eliminated in this application of the "trail encabulator" for mountain bikes:

 

[garrett77]

It's for storing port.

 

[fretno]

Its the future port.

 

[MVE]

Its a portal to nowhere…

Crazy