NWB - Community Blog

16 Feb 2011

15" bass speaker needed.

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Posted By : Pop Criminals | Comments : 12

Where can I get one?

Hi NWB'ers.
The speaker's gone in my Trace Elliot combo.
Anybody know where I can get a replacement?

Comments

# Posted by Kingpin (Keith) - 16/02/2011, 12:07 (GMT)

Used this chap- good service

http://www.loudspeaker.co.uk/

# Posted by The Buzzz - 16/02/2011, 12:23 (GMT)

I have available a near new (only used in rehearsals) 250 watt 15" speaker !
Please PM me

# Posted by Rumble Fat Band - 16/02/2011, 12:25 (GMT)

I'd speak to TE first and try and find out the spec on the speaker.
If you just bung any 15" speaker in, it might sound great, more likely it won't.
The speaker needs to be matched to the enclosure, ( or vice versa).
I've a pair of EMINENCE DELTA 15-A's 15" Speakers, 400w 8 Ohm, but you need to say which Combo it is to check if it would be suitable.
Speaker Cabinets and Speaker matching is a "black art".
Lean Audio are great at advice as well.

# Posted by The Buzzz - 16/02/2011, 13:41 (GMT)

Most definitely appreciate were RFB is coming from and as such my offer would be based on a suck n see basis

# Posted by Pop Criminals - 16/02/2011, 13:57 (GMT)

Thanks guys.
It's a Trace Elliot GP7 SM 150 combo.
The speaker that's blown is a Celestion BG 15S 100.
No idea if that's the original/correct speaker for the amp/enclosure but it sounded fine before it died.
Just had a look at the TE website but my amp's not listed.

# Posted by Rumble Fat Band - 16/02/2011, 14:53 (GMT)

Is it an 8 or 4 Ohm or model?

# Posted by Rumble Fat Band - 16/02/2011, 14:57 (GMT)

Is it this one only with a 15" Speaker?
http://basschat.co.uk/index.php?showtopic=123353

# Posted by Pop Criminals - 16/02/2011, 16:18 (GMT)

Nah, it's more like this but a 150W model:

cgi.ebay.co.uk/.../eBayISAPI.dll:MEWAX:IT

The speaker out socket says 4 Ohms
The output power is 150 W RMS 300 W peak.

# Posted by Rumble Fat Band - 16/02/2011, 17:08 (GMT)

Looks like Problem No1 is that the speaker is rated at 100W RMS and you amp is kicking out 150W RMS. From what I can gather the 4 Ohms is the total load the Amp will handle, so the exsiting speaker should be an 8 Ohm one allowing you to plug another 8 Ohm Cab in parallel.
Problem No 2 is that it appears to be a "tuned" cabinet if it has 2 "tuning ports" to the right hand side.
Any chance you could measure the "inside" measurements of the speaker section, ( I am assuming the Amp section and Speaker section are effectively seperate "boxes" ).
You may be able to get a rough idea from the outside.

# Posted by Pop Criminals - 16/02/2011, 19:27 (GMT)

Blimey, this is getting complicated...
Approx measurements of the inside of the cabinet are:
57cm x 43cm x 27cm

# Posted by Rumble Fat Band - 16/02/2011, 20:15 (GMT)

Just trying to be helpful and check whether one of the speakers I have would do.
The emminenece speakers I have work best in a Ported Cab of between 2.9 and 5.7 Cu Ft.
Your cab is 2.32. That is not to say they wouldn't be any good in yours, but it's a chance you take.
An Emminence Deltalite 2515 would be fantastic, light, (and expensive)
An Emminence Gamma 15A would also work really well.
So the choices are:
a) Find a speaker that works well in a 2.32 CuFt Vented Cab, (Lean Audio are great with this kind of advice)
b) Take a chance and put any speaker in.
c) Cut the Amp off and buy a properly designed Bass Cab and use a seperate Head/Cab.
Drop me a PM if you want any more info.

# Posted by Pop Criminals - 16/02/2011, 20:29 (GMT)

Nice one mate, plenty of info there.
Much appreciated :-)
I'm gonna sleep on it for now!

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