Re: Something's gotta give...

Posted by rick57 on September 24, 2002 at 22:11:27

In Reply to: Something's gotta give... posted by Duke on September 24, 2002 at 03:26:21:

Thanks to all who've responded so far

As you may have guessed I'm a newbie. I starting reading my first DIY book (Dickason's Loudspeaker Design Cookbook, 5th ed., and waiting on the 6th ed) just a week ago.

Duke, I'd like to know why a lower efficiency driver gets the same extension in a smaller box - I thought it would be the other way around??

(I did say) I'd consider EQ, as long as it didn't diminish the dynamics too much.

I agree good dynamics is worth trading off extension for.
The 3-4 cubic foot is just a target, but a look
www.jblpro.com/pages/components/2235h.htm
showed the JBL 2235H 15's may be able to do it or come close, perhaps in a larger box (to be further investigated). I'll have to find out their price too.
The Lambda 15 TDX (I think $390) may also come close. John at Lambda is coming up with his ideas, I'll let y'all know. I was aiming to get about 4 octaves - 18 - 300 Hz.

The point of my post was to identify what driver (up to say $400-500) will come nearest, then see if I am better with Plan B: a main down to say 40 Hz, and separate sub(s) more for home theatre.

It sounds like you think 'Plan B'. Can you recommend a moderate priced bass driver then better than the PHLs; or more importantly a sub driver/ design approach to cover 18-40 Hz??

Since my post, I've had a quick look at transmission line subs. According to Dickason, TLs have the slowest rolloff, and other things being equal the best transient response. There are a number of designs on the web, some using the good value Shiva sub. Some look very unusual, have modest footprints. So (subject to further investigation) this looks most promising.

Tthylantyr, at the treble end, the Stage Accompany SA8535 isodynamic tweeter sounds great but too dear. But good to hear another glowing report on PHL!

If anyone can comment or suggest some good (not overly expensive) options -

Muchos thankos

Richard

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Follow Ups Full Thread

Topic - high end wide range bass drivers - rick57 00:57:08 09/24/02 (18)

Re: high end wide range bass drivers - thylantyr 11:01:46 09/24/02 (6)

Using Lambda woofers up high - Duke 17:54:37 09/24/02 (5)

Re: Using Lambda woofers up high - thylantyr 22:01:03 09/24/02 (4)

a couple of Lambda comparisons - Duke 06:13:46 09/25/02 (1)

Re: a couple of Lambda comparisons - thylantyr 07:43:31 09/25/02 (0)

Re: Using Lambda woofers up high - rick57 22:35:06 09/24/02 (1)

Re: Using Lambda woofers up high - thylantyr 07:47:13 09/25/02 (0)

Re: high end' full range bass drivers - Magnetar 04:22:18 09/24/02 (6)

Re: high end' full range bass drivers - rick57 22:25:37 09/24/02 (1)

Re: high end' full range bass drivers - Magnetar 06:49:17 09/25/02 (0)

Another PHL open back bass and mid - Edp 07:17:32 09/24/02 (3)

Re: Another PHL open back bass and mid - Magnetar 06:57:39 09/25/02 (0)

Re: Another PHL open back bass and mid - rick57 22:32:06 09/24/02 (1)

Re: Another PHL open back bass and mid - Edp 07:13:49 09/25/02 (0)

Something's gotta give... - Duke 03:26:21 09/24/02 (3)

Re: Something's gotta give... - rick57 09/24/0222:11:27 09/24/02 (1)

parameters that establish woofer efficiency - Duke 12:48:06 09/25/02 (0)

Re:"In my opinion, good dynamics is worth trading off extension for" - mvwine 06:44:18 09/24/02 (0)

Follow Ups

Re: Something's gotta give... - rick57 09/24/0222:11:27 09/24/02 (1)

parameters that establish woofer efficiency - Duke 12:48:06 09/25/02 (0)

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